Electricity: motive power systems patents - Monitor Patents
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Electricity: motive power systems

Below are recently published patent applications awaiting approval from the USPTO. Recent week's RSS XML file available below.
Listing for abstract view: USPTO application #, Title, Abstract excerpt,Patent Agent. Listing format for list view: USPTO National Class full category number, title of the patent application.
  
05/21/2015 > 19 patent applications in 16 patent subcategories.

20150137712 - Multi-actuator design and control for a high-speed/large-range nanopositioning system: Multi-actuator system. The system includes at least two nano positioners having different ranges and bandwidths located in cascaded serial form to contact and move an object. A control system employs data-based control design to combine the at least two nano positioners so as to apportion actuation responsibilities among the at... Agent:

20150137713 - Adaptive linear resonance actuator controller: A system includes a controller to control movement of a linear resonant actuator (LRA). The system includes a monitor in the controller to monitor a back electromotive force (BEMF) signal from the LRA representing the movement of the LRA. The monitor generates an indicator that indicates whether or not movement... Agent:

20150137715 - Controlled power fade for battery powered devices: A method is provided for operating a power tool having a motor powered by a battery. The method includes: delivering power from the battery to the motor in accordance with an operator input; detecting a condition of the power tool indicating a shutdown of the power is imminent; and fading... Agent: Black & Decker Inc.

20150137714 - Vehicle motor drive circuit: Disclosed are a vehicle motor drive circuit and a driving method thereof. In the vehicle motor drive circuit according to the present invention, when the floating voltage is generated on the digital ground line due to a short circuit or a poor contact, the switch control signal is connected to... Agent:

20150137716 - Method for activating an electric machine: In a method for activating an electric machine having a rotor, a stator winding having multiple phases and a rectifier having multiple half-bridges corresponding to the number of phases, which each have active switching elements, alternating current signals, which are phase-offset to one another by switching the switching elements, are... Agent:

20150137717 - Braking apparatus for electric power tool: One aspect of an embodiment of the present disclosure is a braking apparatus for an electric power tool that includes a switching circuit with six switching elements and a brake control unit. The brake control unit switches any one selected switching element of three switching elements forming one selected switch... Agent:

20150137718 - Controlling a motor with two or more hall sensors: A motor system includes a motor including two Hall sensors configured to output binary values, and a controller configured to control the motor. The two Hall sensors are placed 120 or 60 electrical degrees apart. The controller is operable to monitor output signals of the two Hall sensors and to... Agent: Woodward, Inc.

20150137719 - Apparatus for controlling 3-phase motor and method for maintaining high torque therein: Provided are an apparatus for controlling a 3-phase motor and a method for maintaining a high torque therein, which are capable of preventing excessive heat generation in a coil, through which a phase current flows, by causing an AC current to flow in a specific phase when a 3-phase motor... Agent:

20150137721 - Power tool: A power tool comprises a motor, an output torque calculation unit configured to calculate an output torque of the motor based on a current flowing through the motor, a friction torque calculation unit configured to calculate a friction torque of the motor based on a rotation speed of the motor,... Agent:

20150137720 - Synchronous machine control device: A synchronous machine control means is provided with a magnet state output means (7) that estimates the magnetic flux of a permanent magnet forming the magnetic field of a synchronous machine (1); in a magnet state correction value calculation mode, the magnet state output means (7) calculates a magnet state... Agent: Mitsubishi Electric Corporation

20150137722 - Dc voltage detector and power converter using the same: In a thyristor control device which converts a first AC voltage to a DC voltage and converts the DC voltage to a second AC voltage to be supplied to a synchronous motor, a DC voltage detector is configured to detect the DC voltage, and is provided with an AC voltage... Agent: Toshiba Mitsubishi-electric Industrial Systems Corporation

20150137723 - Electronic apparatus and protecting method thereof: An electronic apparatus includes a first casing, a protected device, a detector, a first actuator and a controller. The protected device is spaced apart from the first casing by a first shortest distance. The detector is configured to detect a first early sign before a first collision of the first... Agent:

20150137724 - Control device for drive device: Multipliers 21a and 21b output values, which are obtained by multiplying a total drive command value Es by first and second gains G1 and G2, respectively, as first and second drive command values E1 and E2. Controllers 23a and 23b control first and second actuators (motors) 5 and 7, respectively,... Agent:

20150137725 - Control device for drive device: A thrust reverser device for an aircraft includes at least two thrust reversers, and each of them includes a movable cowl movably actuated by an actuator driven by an electric motor. The electric motor is powered by a single power-conversion module including at least one autotransformer which is supplied with... Agent:

20150137726 - Motor controller for protecting tool and object to be processed in emergency stop: A motor controller according to the present invention includes a stop cause detecting unit for detecting a stop cause by which an emergency stop of a motor is carried out, a stop command generating unit for generating a stop command that stops a tool along a command trajectory, and a... Agent:

20150137727 - Motor control apparatus: A motor control apparatus includes a torque-limit output unit configured to output a torque limit with which power consumption of a motor is equal to or smaller than a predetermined motor power limit value and voltage amplitude required for driving the motor is equal to or smaller than a predetermined... Agent: Mitsubishi Electric Corporation

20150137728 - Peak detection circuit and method: A circuit is provided for detecting peaks of a sinusoidal input signal includes circuitry for generating first and second sinusoidal output signals that are out of phase with one another and with the sinusoidal input signal. A comparator block compares the sinusoidal output signals to determine instances where the amplitudes... Agent: Magna E-car Systems Of America, Inc.

20150137729 - Rotary actuator: A rotary actuator, in particular for a motor vehicle, has an actuating element which can rotate about an axis, and a position sensor which detects the position of the actuating element in circumferential direction. The rotary actuator is disposed such that the rotational movement of the actuating element is continued... Agent:

20150137730 - Asynchronous motor and method for operating an asynchronous motor: In a method for operating an asynchronous motor including a main winding and an auxiliary winding, a start capacitor is connected in series with the auxiliary winding before the asynchronous motor is started up and is disconnected at a point in time, which is to be determined, after the asynchronous... Agent:

  
05/14/2015 > 20 patent applications in 16 patent subcategories.

20150130374 - Switched resonant ultrasonic power amplifier system: A switched resonant power amplifier system for ultrasonic transducers is disclosed. The system includes an amplifier that receives and processes a driver output signal for generating a drive signal that is provided to an ultrasonic device for controlling output of the ultrasonic device. An output control circuit receives and processes... Agent:

20150130375 - Method and apparatus for an emergency lowering kit: A method and apparatus are disclosed for lowering a load on a direct current hoist motor during an electrical power interruption, the method including but not limited to determining in a crane processor that the electrical power interruption has occurred; and providing a brake assist current to shunt field on... Agent: Electronic Power Design, Inc.

20150130376 - Method of field weakening control of permanent magnet motor drivers: A method for field weakening control of a three phase permanent magnet AC motor in a VFD drive. The VFD drive calculates the three phase voltages to be supplied to the AC motor via a three phase inverter using feedback and feed-forward calculations of quadrature and direct demand currents.... Agent:

20150130377 - Drive control apparatus and fuel pump using the same: A microcomputer operates as a positioning part positions a rotor at a control start position, which is a position of the rotor relative to a stator to be able to start controlling driving of a brushless motor, by supplying a current to a winding set a number of times “n”... Agent:

20150130378 - Driving device and driving method for motor, cooling device and electronic machine: The present disclosure provides a device and a method for driving a motor that demonstrates low noise and/or low vibration. A pulse-modulated control pulse signal S2 is generated by a driving signal generation portion 310 at each phase. A driving voltage VU˜VW, with duty cycle corresponding to the control pulse... Agent:

20150130379 - Ground fault detecting circuit and power converting device including the same: In the ground fault detecting circuit, one terminals of first to third resistance elements are connected to first to third AC lines, respectively, the other terminals of the first to third resistance elements are commonly connected to one terminal of a fourth resistance element, and the other terminal of the... Agent: Toshiba Mitsubishi-electric Industrial Systems Corporation

20150130380 - Motor control device: A ripple current that flows into a main-circuit capacitor is estimated based on a system impedance and output power to a motor, thereby making it possible to always perform ripple-current estimation and life estimation computation for the main-circuit capacitor online. Because data of the system impedance which largely affects the... Agent: Mitsubishi Electric Corporation

20150130381 - Processor, device, method and computer program to control an emergency operation of a multi-phase rotating field machine during interruption of a first phase current of a first phase of the rotating field machine: Embodiments relate to a processor (708) for controlling an emergency operation of a multiphase induction machine (701) upon an interruption of a first phase current (724-1; 724-2; 724-3) of a first phase of the induction machine (701). The processor (708) is designed to determine a control current setting (716-1; 716-2;... Agent:

20150130382 - Controller for a brushless direct-current motor: A controller for a brushless direct-current motor having an upstream converter, which has a half-bridge having a pair of switching means for each phase winding of the motor, includes a measuring device or has a signal connection to a measuring device. The measuring device is associated with a half-bridge and... Agent:

20150130383 - Method for discharging energy stored in a stator of an electric motor: A method for discharging energy stored in a stator of an assisted steering electric motor of a motor vehicle is disclosed. The stator includes at least one electrical phase, where a state of disconnection of said phase with a control device of the stator is controlled by a switch device... Agent:

20150130384 - Drive circuit for an air bearing motor: The invention relates to a drive circuit for an electric motor having an aerodynamic support of the motor shaft, wherein the drive circuit comprises at least one storage means for storing electrical energy by which the electric motor can be fed with electrical energy on a failure of the supply... Agent:

20150130385 - Motor control device, image forming apparatus, motor control method, and computer-readable storage medium: A motor control device includes a motor lock state determining unit configured to determine whether a motor is in a rotation lock state; a position hold state determining unit configured to determine whether the motor is in a position hold state; a lock detection invalidation determining unit configured to invalidate... Agent: Ricoh Company, Limited

20150130386 - Methods and apparatus for a motor: Methods and apparatus for a motor generally comprise a motor shell, a drive unit, a motor electronics assembly configured to operate the drive unit, and a shaft coupled to the drive unit. The drive unit may comprise an axial design configured to increase the efficiency of the system. The motor... Agent:

20150130387 - Motor controller: A motor controller includes a motor, an encoder, and a control circuit. The motor drives a target object to be controlled. The encoder outputs a pulse signal synchronously with rotation of the motor. The control circuit rotates the motor based on a count value of the pulse signal. The control... Agent:

20150130388 - Controller of linear motion device and control method of the same: The present disclosure relates to controllers of linear motion devices and control methods of the same, in particular, to a controller of a linear motion device and a control method of the same capable of controlling the position of the linear motion device accurately, in a case where a misalignment... Agent: Asahi Kasei Microdevices Corporation

20150130389 - Relative rotational angular displacement detection device, torque detection device, torque control device, and vehicle: A relative rotational angular displacement detection device includes a pair of rotatable members rotatable relative to each other in a circumferential direction. A permanent magnet is attached to one of the rotatable members and includes magnetic poles magnetized in an axial direction of the axis of rotation and arranged to... Agent: Yamaha Hatsudoki Kabushiki Kaisha

20150130390 - Electronically controlled universal motor: An electric motor apparatus comprising: a stator component and a rotor component rotationally mounted coaxially with and within the stator component. The stator component and the rotor component each comprise windings configured to generate an electromagnetic field from an electric current. The electric motor further comprises an intermediate screening component... Agent: Arm Limited

20150130391 - Motor drive controller and motor drive control method, and motor system using the same: A motor drive controller may include: a current detecting unit detecting current values corresponding to a plurality of phases of a motor using a plurality of resistor elements; a correcting unit correcting an error in the detected current values caused by an error in the plurality of resistor elements; and... Agent: Samsung Electro-mechanics Co., Ltd.

20150130392 - Power source control apparatus for rotating electrical machine: A power source control apparatus for a rotating electrical machine includes a TRC optimum voltage output portion (21) and a GEN optimum voltage output portion (22) that acquire a TRC optimum voltage and a GEN optimum voltage; a normal target voltage output portion (23) that sets a normal target voltage... Agent: Honda Motor Co., Ltd.

20150130393 - Solid-state relay for running direction control of three-phase alternating current motor and method thereof: A solid state relay for controlling a three-phase AC motor running direction is provided, a driver module, power components module, phase sequence detection module, phase lack detection module, and automatic phase correction and phase lack protection logic module. The input of the phase sequence detection module is connected to the... Agent: Kudom Electronics Technology (shanghai) Co., Ltd.

  
05/07/2015 > 17 patent applications in 11 patent subcategories.

20150123576 - Motor drive control device and operation method thereof: When a motor drive control device is integrated in a semiconductor integrated circuit having a small chip area, calibration for improving the accuracy of detection of a counter electromotive voltage, which is for detecting the speed of a motor, is enabled. A first multiplier performs multiplication between a drive current... Agent:

20150123577 - Control apparatus for ac motor: A control apparatus controls an AC motor by detecting current passing through one phase. The apparatus includes an upper controller which includes a torque command calculation section, and a torque monitoring section monitoring torque to determine whether the torque is within a range, and a lower controller which controls current... Agent:

20150123578 - Method and apparatus for increasing a current sensing range in a polyphase motor system: A method of increasing a current sensing range for a vehicle or other polyphase motor system includes measuring phase currents delivered to a motor of the system. A controller calculates an absolute value of each phase current, compares each calculated absolute value to a saturation limit to determine whether only... Agent: Gm Global Technology Operations LLC

20150123579 - Method and apparatus for controlling power converter with inverter output filter: Power converters and methods are presented for driving an AC load connected through an intervening filter circuit, in which at least one filter current or voltage signal or value is determined according to feedback signals or values representing an output parameter at an AC output of the power converter, and... Agent: Rockwell Automation Technologies, Inc.

20150123580 - Control apparatus for ac motor: According to a control apparatus for an AC motor, a switching section selects a two-phase control current value as a current fixing value, when a first current detection value of a first phase of the AC motor and a second current detection value of a second phase of the AC... Agent:

20150123581 - Control apparatus for ac motor: According to a control apparatus for an AC motor, a switching section selects a two-phase control current value as a current fixing value, when a first current detection value of a first phase of the AC motor and a second current detection value of a second phase of the AC... Agent:

20150123582 - Motor driving apparatus and controlling method thereof: Disclosed herein is a motor driving apparatus, including: an inverter applying a direct current voltage to the respective phases of a brushless DC (BLDC) motor by a switching operation; and a motor driver detecting counter electromotive force patterns in floating sections of the respective phases, detecting zero cross points (ZCPs)... Agent: Samsung Electro-mechanics Co., Ltd.

20150123583 - Motor driving control apparatus and method, and motor system using the same: A motor driving control apparatus may include a zero cross point (ZCP) detecting unit detecting back electromotive force generated by a motor apparatus and detecting a plurality of zero cross points in the back electromotive force, a zero cross point correcting unit correcting the plurality of zero cross points when... Agent: Samsung Electro-mechanics Co., Ltd.

20150123584 - Method and control system for suppression of vibration: A method for suppression of vibration includes: adjusting a center frequency of a band-pass filter, and subjecting a to-be-detected signal to processing by the band-pass filter to result in a bandpass-filtered signal; performing signal processing upon the bandpass-filtered signal to obtain a converted result; determining whether a scanning process is... Agent:

20150123585 - Encoder, motor with encoder, and servo system: An optical module includes: a light source configured to emit diffusion light to tracks; one light receiving array and another light receiving array which are arranged across the light source in a width direction substantially vertical to the measurement direction; a light receiving array arranged between the one light receiving... Agent: Kabushiki Kaisha Yaskawa Denki

20150123586 - Encoder, motor with encoder, and servo system: The encoder includes a plurality of slit tracks, a point light source, two first light-receiving arrays, two second light-receiving arrays, and a third light-receiving array. The plurality of slit tracks respectively comprises a plurality of reflection slits arranged along a measurement direction. The point light source is configured to emit... Agent: Kabushiki Kaisha Yaskawa Denki

20150123587 - Encoder, motor with encoder, and servo system: An encoder includes a plurality of slit tracks, a point light source, a first light-receiving array, and a second light-receiving array. The plurality of slit tracks respectively comprises a plurality of reflection slits arranged along a measurement direction. The point light source is configured to emit diffusion light to the... Agent: Kabushiki Kaisha Yaskawa Denki

20150123588 - Encoder, motor with encoder, and servo system: An encoder includes a plurality of slit tracks, a point light source, a first to third light-receiving arrays. The plurality of slit tracks respectively comprises a plurality of reflection slits. The point light source emits diffusion light to the plurality of slit tracks. The first light-receiving array receives light reflected... Agent: Kabushiki Kaisha Yaskawa Denki

20150123589 - Encoder, motor with encoder, servo system, and signal processing method for encoder: An encoder includes a measurement target which is coupled to a motor, a module which is positioned relative to the measurement target and generates signals based on motion of the measurement target, and a control device which generates and outputs position data based on the signals from the module and... Agent: Kabushiki Kaisha Yaskawa Denki

20150123590 - Method and circuit assembly for driving a stepper motor: A method and a circuit assembly for driving a 2, 3- or more phase stepper motor by predetermined courses of current curves, especially for a microstep operation, is disclosed. For minimizing the memory capacity needed for storing supporting points of the course of the current curve by which the microsteps... Agent: Trinamic Motion Control Gmbh & Co. Kg

20150123591 - Motor driving circuit: A logic circuit controls a bridge circuit connected to a coil of a stepping motor in synchronization with an input pulse, so as to control electric power supplied to the coil of the stepping motor. A back electromotive force detector detects the back electromotive force VBEMF across the coil L.... Agent:

20150123592 - Motor controller: A motor controller is configured to control a driving of an AC motor. The motor controller includes a voltage calculation part, a voltage limit value generation part, and a d-axis current adjustment part. The voltage calculation part is configured to calculate a voltage instruction value. The voltage limit value generation... Agent: Kabushiki Kaisha Yaskawa Denki

  
04/30/2015 > 20 patent applications in 14 patent subcategories.

20150115846 - Piezoelectric cooling control apparatus and method: The present invention relates to a piezoelectric cooling control apparatus and method, which set pulse parameters based on the temperature of the heating unit of a cooling target device, and thus control piezoelectric cooling. The piezoelectric cooling control apparatus includes a temperature sensing unit for sensing temperature of a heating... Agent:

20150115847 - Vibration generating apparatus: A vibration generating apparatus with high yield, low cost, and can exhibit vibration tactile haptic effects even with variation in the natural frequency of a mechanical vibrator, including a damping system having a damping ratio ξ<1 to support a mechanical vibrator to a fastening part, and a magnetizing unit generating... Agent: Nidec Seimitsu Corporation

20150115848 - Electric linear actuator: An electric linear actuator includes a linear array of poloidal electrical cods. The central openings of each of the coils are coaxially aligned to define a central bore for the linear array. A shaft is received within and is movable along the central bore of the linear array. Magnets are... Agent:

20150115849 - System and method for pausing and resuming an operation of a motor: A motor controller coupled to a motor is described. The motor controller includes a computing device configured to receive a first command designating a duration during which to operate the motor. The computing device is further configured to operate the motor during a first portion of the designated duration, receive... Agent:

20150115850 - Variable torque angle for electric motor: A method for controlling an electric motor (such as a synchronous reluctance electric motor) is suggested, in which the torque angle in the d-q-reference frame is at least in part and/or at least at times varied depending on at least one working condition of the electric motor.... Agent:

20150115851 - Method for controlling ecm motor to output constant torque: A method for controlling an ECM motor to output a constant torque. The method includes: 1) entering a target torque value T0 from an external device; when the motor is in a non-use state, starting the motor, and allowing the microprocessor to acquire an original output voltage value P chopped... Agent:

20150115852 - Over-current protection circuit and motor driving device: An over-current protection circuit may include a preliminary driving unit driving a motor inverter in a start-up mode prior to a normal mode, a current level detecting unit detecting a level of a current flowing through the motor inverter and a motor according to driving of the motor inverter and... Agent:

20150115853 - Control device for eliminating malfunctions in a network: Electrical malfunctions in a network which are caused by torque fluctuations of an electric motor, in particular flicker, are reduced by using a control device. For simple and cost-effective minimizing or even correction of such malfunctions with the control device, the control device has at least one first input for... Agent: Siemens Aktiengesellashaft

20150115854 - Motor speed control with speed foldback for phase imbalance protection: A variable frequency motor drive comprises a converter including a rectifier having an input for connection to an AC power source and converting the AC power to DC power. A DC bus is connected to the rectifier circuit. At least one bus capacitor is across the DC bus. An inverter... Agent: Yaskawa America, Inc.

20150115855 - Motor controller detecting abnormality of power transmission unit between main spindle and motor: A motor controller includes a single-rotation signal detector detecting a single-rotation signal that indicates a single rotation of a main spindle, a rotation angle detector detecting a rotation angle of a motor every predetermined time, and a counter adding up the rotation angle. A value of the counter is reset... Agent:

20150115856 - Motor drive controller and motor drive control method: An motor drive controller may include: A mode control unit calculating a pulse frequency of a pulse width modulation (PWM) signal provided from an outside and generating an operating signal according to the calculated pulse frequency of the PWM signal, a regulator receiving the operating signal, transitioning to an enable... Agent: Samsung Electro-mechanics Co., Ltd.

20150115858 - Apparatus for compensating phase error in inverter output voltage: A phase compensation apparatus in an inverter output voltage in a system is provided, whereby performance of an inverter can be enhanced by compensating a time delay of measured voltage of inverter output voltage detection unit.... Agent: Lsis Co., Ltd.

20150115859 - Control circuit: A circuit allows an energy efficient DC design to drop in to an AC application and interface directly with the AC signals in a cost effective manner. The circuit is implemented without any use of mechanically switched contacts. All switching of current is done through solid state devices. Positional feedback... Agent:

20150115857 - Handheld power tool with compact ac switch: A power tool is disclosed having a compact AC switch assembly. An electric motor driving the power tool is contained within a housing that includes a handle. A trigger is slidingly received in the handle and moves in an axis of trigger travel along a trigger travel distance extending between... Agent: Black & Decker Inc.

20150115861 - Method and apparatus for conducting a plausibility check on a position of an actuating element of a position encoder system with an electronically commutated electric machine: A method for operating a position encoder system includes performing a closed loop position control based on a detected first position indication of a position of an actuating element. The performing of the closed loop position includes generating a position correcting variable and allocating a space vector the position correcting... Agent:

20150115860 - Motion-control system for performing different tasks: A motion-control system for moving a mass according to different tasks includes at least one controllable actuator for performing the different tasks and an input module for receiving a specific task to perform. The system also includes a controller for controlling a performance of the specific task by the controllable... Agent: Mitsubishi Electric Research Laboratories, Inc.

20150115862 - Motor control apparatus and motor system: A motor control apparatus includes a position and speed estimator configured to output a new estimated motor position and an estimated motor speed based on a position estimation deviation that is a difference between an acquired motor position and an estimated motor position of a motor, and a controller configured... Agent: Kabushiki Kaisha Yaskawa Denki

20150115863 - Motor starter system and method for operating same: A motor starter system and a method for operating same are disclosed. According to an embodiment of the present invention, reliability of a motor protection function during an overcurrent is improved by automatically controlling the on/off state of an electromagnetic contactor using an analog sensor value outputted from an external... Agent: Lsis Co., Ltd.

20150115864 - Motor control apparatus and method for controlling motor: A motor control apparatus includes a voltage regulator to execute a voltage increase mode to increase a voltage applied to an induction motor from a lower limit of a first range over time. A frequency regulator executes a frequency decrease mode to decrease a frequency of the voltage from an... Agent: Kabushiki Kaisha Yaskawa Denki

20150115865 - Motor control apparatus and method for controlling motor: A motor control apparatus includes a voltage regulator to execute a voltage increase mode to increase a voltage applied to an induction motor from a lower limit of a first range over time. A frequency regulator executes a frequency decrease mode to decrease a frequency of the voltage from an... Agent: Kabushiki Kaisha Yaskawa Denki

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