Abstract: A method and a system for determining deterioration of permanent magnets of an electric apparatus to be inspected that facilitate determination without the need to remove the electric apparatus from a facility where it is installed. If the electric apparatus to be inspected is a three-phase linear motor, a current detector is used to acquire currents. A three-phase/two-phase conversion section converts the acquired currents into an ?-axis current command and a ?-axis current command. A locus of a current vector is computed based on the ?-axis current command and the ?-axis current command. A comparing and determining section compares the computed locus with a standard upper limit value stored in a storage means. If the number of times that the locus of the current vector exceeds the standard upper limit value exceeds a predetermined value, it is determined that the permanent magnets have been deteriorated.

Abstract: A drive controller arranged to provide electrical power from a power supply to a machine or load over a long AC power cable of the order of kilometers. The drive controller is arranged with circuits and/or control processes to provide AC current at a constant ratio of voltage and frequency to said machine or load. The drive controller maintains voltage and frequency at the machine terminals despite fluctuations in voltage and/or frequency that would ordinarily be caused by the load. This is done by estimating the voltage and current at the machine terminals and adapting the drive controller output accordingly to actively vary the converter output dependent on the load of the machine or other load. In other aspects of the invention a method and a computer program for carrying out the method are described.

Abstract: A motor controller comprising multiple types of interfaces assigned automatically, including a mother circuit board and a daughter circuit board. The daughter circuit board is plugged into the mother circuit board to form electric connection. The mother circuit board has a power circuit, a microprocessor unit of the mother circuit board, a rotor position sensing unit, a power inverter unit, and an analog sensing unit. The daughter circuit board includes a signal interface circuit. The mother circuit board further has a serial digital communication unit. The signal interface circuit includes a microprocessor of the daughter circuit board, and a serial digital communication unit of the daughter circuit board. The microprocessor unit of the mother circuit board communicates with the microprocessor of the daughter circuit board via the serial digital communication unit of the mother circuit board and the serial digital communication unit of the daughter circuit board.

Abstract: A decentralized motor drive arrangement provides high-voltage operational power and low-voltage standby power from a centralized distribution unit to remote motor drives using the same pair of interconnection power wires. The distribution unit includes a low-voltage power source which has one output terminal diode coupled to one of the output terminals of a high-voltage power source to form one output wire of the distribution unit. The other output terminals of the low-voltage and high-voltage power sources are directly coupled to form the other distribution unit outgoing power wire.

Abstract: A motor driving device includes a communication path selection unit, to which operation command information for controlling driving of a motor is input in a serial data format or a parallel data format via a common input path, a communication unit which includes a serial interface unit for the serial data format and a parallel interface unit for the parallel data format, and outputs a control signal based on the operation command information input via the communication path selection unit, and a driving control unit which controls driving of the motor based on the control signal. The communication path selection unit selects between outputs path to the serial interface unit and the parallel interface unit, which corresponds to the data format of the input operation command information, and outputs the input operation command information to the serial interface unit or the parallel interface unit through the selected output path.

Abstract: A motor drive is provided that includes a control circuit or board and a one or more functional circuits or option boards coupled to the control board, and a profile that includes a configuration for the option board. A method of operating a motor drive that includes loading a profile for a option board coupled to a control board of the controller, wherein the profile comprises a configuration for the option board. A tangible machine-readable medium implementing the method is also provided.

Abstract: A switch for an electric motor has a switch arm comprising a lever and an arc barrier formed integrally with the lever. The switch has first and second electrical contacts. The switch arm and second electrical contact are moveable relative to the first contact between an open position and a closed position. The arc barrier is positioned adjacent the first contact in the closed position. The arc barrier limits the risk of electrical arcing associated with the electrical contacts. The switch is suitable for use in an electric induction motor. For example, the switch can be adapted to de-energize auxiliary start windings when an electric induction motor is up to speed and/or to provide a signal indicating the motor is operating.

Abstract: Motion control using electromagnetic forces. The control of motion in unpowered apparatus and an apparatus driven by electric motors and/or other prime movers utilizes electromagnetic force/torque for control of motion. One objective is to extend the domain of electric motor speed control, traditionally characterized by electronic techniques, to small apparatus such as bubble vibration toys, paper dispensers, toothbrushes and other appliances.

Abstract: A motor driving circuit controls a driving of a motor based on communications with an external microcomputer. The motor driving circuit includes an AD converter that A/D converts an analog signal responsive to a motor current flowing through the motor and outputs a first digital signal resulting from the A/D conversion. The motor driving circuit includes a number-of-revolutions information producing circuit that outputs a second digital signal responsive to the number of revolutions of the motor based on the first digital signal output from the AD converter. The motor driving circuit includes an input/output circuit that outputs the second digital signal to the microcomputer. The number-of-revolutions information producing circuit sets a period of the second digital signal at a value associated with the number of revolutions of the motor and sets a duty cycle of the second digital signal at a value associated with information on the driving of the motor.

Abstract: A motor drive is provided that includes a control circuit or board and a one or more functional circuits or option boards coupled to the control board, and a profile that includes a configuration for the option board. A method of operating a motor drive that includes loading a profile for a option board coupled to a control board of the controller, wherein the profile comprises a configuration for the option board. A tangible machine-readable medium implementing the method is also provided.

Abstract: In one embodiment, a motor drive is provided that includes a control board and an option board coupled to the control board via a serial interface, wherein the option board includes a configurable data transfer rate. A method of operating a motor drive that includes configuring a transfer rate of an option board coupled to a control board via a serial interface. A tangible machine-readable medium implementing the method is also provided.

Abstract: Power-efficient actuator apparatus and methods. In one exemplary embodiment, the actuator assembly utilizes a shape memory alloy (SMA) filament driven by an electronic power source to induce movement in the underlying assembly to actuate a load (e.g., water valve). In addition, a circuit board is included which allows the actuator assembly to be readily incorporated or retrofit into a wide range of systems such that the signal characteristics of the supply line can, among other applications, be conditioned in order to protect the SMA filament. Furthermore, the circuit board can also readily be adapted for use with “green” power sources such as photovoltaic systems and the like. Methods for manufacturing and utilizing the aforementioned actuator assembly are also disclosed.

Abstract: An actuator assembly having an operation indication function is disclosed. The actuator assembly includes an actuator, a controller and an indication lamp set. The actuator has a motor, a screw, and an extension rod, which has limit positions connected with a limit switch set. The controller controls the motor of the actuator to rotate clockwise or anticlockwise. The indication lamp set is settled on at least one point on a circuit between the actuator and the controller and electrically communicated with the limit switch set. Thereby, when the extension rod touches any of the limit positions and thus triggers the limit switch set, the indication lamp set illuminates to indicate that the extension rod of the actuator reaches the corresponding limit position.

Abstract: Tubular linear piezoelectric motor (100, 300), and a method for exciting a tubular piezoelectric resonator (101, 301) used in such motor. The motor is comprised of a resonator (101, 301) formed of a cylindrical tube. The tube has length nL comprised of a piezoelectric material, where L is some length, and n is an even numbered integer, greater than zero. The piezoelectric material of the cylindrical tube is polarized in a radial direction, perpendicular at each point to the interior and exterior surface of the cylindrical tube. The resonator is excited with one signal having a single exciter frequency applied across an inner electrode (102, 302) and one or more first outer electrodes (103, 103a, 103b). The single exciter frequency is selected to move a contact site of one or more annular protrusions along an elliptical path when the resonator is excited.

Abstract: The present invention discloses a chip structure capable of smoothing slope of signal during conversion. And the chip structure is suitable for a DC motor which is embedded in a portable electronic device. The DC motor is for adjusting the focal distance of a digital camera which is installed within the portable electronic device. The chip structure comprises an input terminal, a first converter, a control unit, a second converter, an amplifier circuit and an output terminal. The input terminal is for receiving a first digital signal. The first converter is for converting the first digital signal into an analog signal. The control unit is for elongating the transform time of the analog signal. The amplifier circuit is for amplifying the elongated analog signal. The second converter is for converting the elongated analog signal into a second digital signal. And the output terminal outputs the second digital signal.

Abstract: An electric vehicle includes a control unit having overcurrent generation judgment unit, inverter selection unit, and inverter drive control unit. The overcurrent generation judgment unit judges whether an overcurrent is generated in an inverter for generation or an inverter for travel. When an overcurrent is generated in one of the inverters, the inverter selection unit selects the other inverter to be driven. The inverter drive control unit stops the driving of the one inverter and drives the other inverter to drive a travel motor or a generator.

Abstract: Some embodiment of the present disclosure provide an electric motor comprising a power drive configured to supply electric power to different components of the motor that operate with different power inputs. The motor is configured to transform the electric power into mechanical work to perform on a load. The electric motor is configured to be used as a pump or a blower in a HVAC system. The electric motor includes a first power source connected to and supplying an electric power to the windings of the motor, a second power source connected to and supplying an electric power to a logic circuit configured to control operation of the motor, a third power source connected to and supplying an electric power to an external device that is configured to be connected to the motor and not enclosed in a housing, and a housing enclosing the first, second, and third power source.

Abstract: The invention relates to a drive system comprising a liquid-cooling electric machine (1), and to a method for liquid-cooling the stator winding of said type of machine (1). In order to use said system at very low temperatures and in the most simple way possible, said drive system also comprises a cooling circuit (2) for cooling the liquid of a stator winding of the electric machine (1), a pump (3) for pumping a liquid through the coolant circuit (2), a converter (4) for feeding the stator winding and a control device (5) for controlling the converter in such a manner that said converter, prior to activating the pump (3), feeds a heating flow to the stator winding for heating the cool liquid.

Abstract: It is presented an inverter type motor drive device for feeding three phase AC electric power to an electric motor, the inverter type motor drive device comprising: an insulated metal substrate board on which, for each of the three phases, a plurality of power switches are mounted in straight lines in switch assemblies along a first direction, wherein two switch assemblies are assigned for each phase; a printed circuit board on which a plurality of capacitors are mounted, wherein the printed circuit board is essentially parallel to the insulated metal substrate board; and two DC power input terminals mounted on the printed circuit board.

Abstract: An HVAC actuator, such as a spring return actuator, may adjust the maximum output torque of the motor with the varying spring return force of the HVAC actuator as the HVAC actuator moves through its range of motion. In some cases, this may provide a more constant force at the output of the HVAC actuator and reduce the force that is applied through the motor, drive train and/or the HVAC component when an end stop is reached. Also, an HVAC actuator is disclosed that can be configured to discover and store the location of one or more end stop(s), and to slow the speed of the motor down before the end stop(s) is reached. This may reduce the force that is applied through the motor, drive train and/or the HVAC component when an end stop is reached.

Abstract: A motor, including: a stator, a rotor, and a motor controller. The motor controller is connected to a network interface circuit (NIC). The motor can be directly connected to a network, which makes it possible for technicians to facilitate remote control, debugging, remote diagnosis, and troubleshooting. The motor is easy to be identified, and features improved functions, wider application range, and more convenient use.

Abstract: A vehicle drive apparatus includes a battery that is a direct current power source, a converter that increases the voltage of the battery, an inverter connected to a motor that drives the vehicle, an inverter connected to a motor generator that functions as a motor or generator, and a motor control device that controls the motor. The vehicle drive device is also provided with a voltmeter, non-energized state determination devices that determine a non-energized state of the inverters, and ammeters that detect currents applied to a motor from each phase arm of the inverters. Signals of these devices and a signal from the non-energized state determination device are sent to the motor control device.

Abstract: A static switch for DC motors of climate control units, comprising a signal side and a power side, which are mutually separated by means of optoisolators, the side comprising in input at least one terminal for a motor on/off signal and a terminal for a pulse width modulation signal PWM to provide the amplitude modulation, on the power side, of a motor speed signal, the switch comprising a precharging device which has a control terminal connected to a power-on optoisolator and a precharging current supply terminal connected to a motor power supply pole, the switch further comprising at least one power-on transistor connected to the same motor supply pole of the power supply terminal of the device, so that a voltage applied across the power-on transistor that exceeds a certain threshold switches off the motor power-on transistor.

Abstract: A mechanical system includes a plurality of amplifier groups each having a common power source unit connected to a higher-level power source and a plurality of power supply units for supplying power to servo motors from the common power source unit. A servo motor drive control device of the mechanical system includes a plurality of amplifier group electric power detection units each determining an electric energy of the corresponding one of the amplifier groups.

Abstract: A drive mechanism for a furniture portion, in particular a drawer or a door which is mounted movably in or to a furniture item, includes a drive device which is guided movably with respect to a base and which is acted upon by a force storage means, a damping device, and a retraction device. The drive device has an ejection element for moving the furniture portion from a closed end position into an open position, and a locking element which is guided by a preferably heart-shaped guide track which is formed on the base. The damping device, the force storage means which acts on the drive device, and the refraction device are connected in series.

Abstract: The system includes a plurality of vertically spaced medication trays with a base assembly and a motor, responsive to computer commands, mounted on the base assembly. A drive shaft case member extends vertically from the base assembly. A cam assembly includes a plurality of spaced cam members, each cam member having concave portions and lobe portions on a peripheral surface thereof. A first drive clutch selectively engages the motor with both the drive shaft case member and the cam assembly for rotation of both in one direction, while a second drive clutch selectively engages the motor with just the cam assembly for rotation thereof in an opposing direction. The drive shaft case member has a cam follower assembly associated with each cam member, wherein one portion of the cam follower assembly engages the cam element and another portion engages an associated tray when the cam follower engages a selected concave portion on the cam element associated with the tray.

Abstract: To determine the relative position of movable portions of an assembly, a first magnetic device is coupled to a first portion of the assembly. The first magnetic device has a sensing surface with a number of magnetic poles that provide a magnetization state transition location. An absolute position sensor with a two-state output is coupled to the assembly adjacent the first magnetic device. The output state changes when a magnetization state transition of the first magnetic device moves past the absolute position sensor. A second magnetic device is coupled to the assembly. The second magnetic device creates a cyclically-varying magnetic field proximate its sensing surface. An incremental position sensor is coupled to the assembly adjacent the second magnetic device, and has an output that varies continuously relative to magnetic field angle over at least a portion of one cycle of the cyclically-varying magnetic field of the second magnetic device.

Abstract: Electric motor controllers that dynamically adjust a motor resistance parameter are described. In order to adjust the motor resistance parameter, power is applied the electric motor while the controlled vehicle is stopped and its brake is set so that the vehicle remains stopped while a measurement is taken that can be used to determine motor resistance. A new motor resistance value is then generated based at least in part upon the measurement(s) and the motor resistance parameter is set to the new motor resistance value. The new motor resistance parameter may then be used in the control of the electric motor. In some embodiments, the measurements are taken after the controller receives a brake release request but before actually releasing the brake. The described arrangement can be used in a wide variety of motor controllers and is especially well suited for use in low cost controllers that control motors that are susceptible to wide variations in their resistance such as brushed permanent magnet DC motors.

Abstract: A drive circuit includes an ac network and first and second network rectifier/inverters (which can be active or passive) that are connected to the ac network in parallel. A first PWM rectifier/inverter is connected to the first network rectifier/inverter through a first dc link. A second PWM rectifier/inverter is connected to the second network rectifier/inverter through a second dc link. A first two-layer stator winding having a plurality of individual stator coils is connected to the first PWM rectifier/inverter and a second two-layer stator winding having a plurality of individual stator coils is connected to the second PWM rectifier/inverter. The stator coils of the first stator winding and the stator coils of the second stator winding are interconnected such that, in use, the vector sum of voltages across the stator coils in the first stator winding is substantially equal to the vector sum of voltages across the stator coils in the second stator winding.

Abstract: A piezoelectric ultrasonic suspension in gas for creating a contactless bearing support of a precision instrument and specifically an electromagnetic motor. A gas micro-film of elevated pressure is formed between the adjoining surfaces of a spherical saddle and a spherical trunnion. The spherical trunnion is spaced apart from the spherical surface of a saddle by a gas micro-film when the piezoresonator is excited.

Abstract: An actuator and a method for controlling the actuator are described. The actuator comprises: an output member rotatable around an axis of rotation; an input member rotatable around the axis and connected for rotation with the output member via a plurality of cylindrical helical springs; a motor assembly arranged to drive the input member to rotate around the axis of rotation; first and second sensors for detecting the angular position of the input member and the relative angular position between the input member and the output member; and an electronic control unit arranged to determine a desired angular velocity of the input member on the basis of a desired value for the impedance of the actuator and to control the motor assembly on the basis of the error between the desired angular velocity of the input member and the angular velocity of the input member.

Abstract: An HVAC actuator configured to function in cold environments by providing a supplemental current component to an HVAC actuator in order to generate supplemental heat to warm the HVAC actuator.

Abstract: There is provided a motor insulation protecting device 200 comprising a motor 40 installed in a motor chamber 14; an inverter 16 that supplies an inverter voltage for driving the motor 40; and pressurizing means for monitoring an internal pressure in the motor chamber 14 and the inverter voltage of the inverter 16, and increasing the pressure in the motor chamber when an occurrence of discharge of the motor is predicted, wherein the pressurizing means comprises a pressure detection unit 50 that detects the internal pressure in the motor chamber 14; a voltage detection unit that is provided in a control unit 60, and detects the inverter voltage of the inverter 16; and a pressurizing mechanism 70 that increases the pressure in the motor chamber 14 in accordance with the output from the control unit 60 when the detected internal pressure is lower than a preset discharge occurrence prediction internal pressure, and the detected inverter voltage is higher than a preset discharge occurrence prediction inverter volt

Abstract: In a motor device 300 mounted on a mobile body, a pressurizing mechanism for increasing the pressure in a motor chamber 14 in which a motor is installed has a compressor 30, which is driven to rotate by an engine 20 serving as driving means for driving the mobile body, to produce compressed air for motor chamber pressurization, and the compressed air coming from the compressor 30 is fed into the motor chamber 14 through a pipe 72 almost constantly while the engine 20 is being driven.

Abstract: A system and method for determining unknown values of certain motor parameters includes a motor input device connectable to an electric motor having associated therewith values for known motor parameters and an unknown value of at least one motor parameter. The motor input device includes a processing unit that receives a first input from the electric motor comprising values for the known motor parameters for the electric motor and receive a second input comprising motor data on a plurality of reference motors, including values for motor parameters corresponding to the known motor parameters of the electric motor and values for motor parameters corresponding to the at least one unknown motor parameter value of the electric motor. The processor determines the unknown value of the at least one motor parameter from the first input and the second input and determines a motor management strategy for the electric motor based thereon.

Abstract: Motion control using electromagnetic forces. The control of motion in unpowered apparatus and an apparatus driven by electric motors and/or other prime movers utilizes electromagnetic force/torque for control of motion. One objective is to extend the domain of electric motor speed control, traditionally characterized by electronic techniques, to small apparatus such as bubble vibration toys, paper dispensers, toothbrushes and other appliances.

Abstract: A motor drive is provided that includes a control circuit or board and a one or more functional circuits or option boards coupled to the control board, and a profile that includes a configuration for the option board. A method of operating a motor drive that includes loading a profile for a option board coupled to a control board of the controller, wherein the profile comprises a configuration for the option board. A tangible machine-readable medium implementing the method is also provided.

Abstract: An improved choke assembly for a power electronics device is provided. More specifically, a choke assembly with improved protection from environmental conditions such as dirt and water is provided. An improved choke assembly may include a double layer of protection around an inductor coil of a choke that seals the inductor coil from the outside environment. Another embodiment may include a choke with a projection that seals the cabinet from the cooling channel while allowing the choke leads to pass into the cabinet.

Abstract: In a hybrid vehicle, rocker outer reinforcements serving as vehicle side frame members in a vehicle width direction extend in a vehicle front-rear direction. An electric power cable is provided such that a portion thereof along the vehicle front-rear direction is placed along an inner side surface of the rocker outer reinforcement in the vehicle width direction. An electric power cable is provided such that a portion thereof along the vehicle front-rear direction is placed along an inner side surface of the rocker outer reinforcement in the vehicle width direction. Further, each of the electric power cables is placed in a space portion formed between the rocker outer reinforcement and a center body pillar serving as an energy absorbing member absorbing energy in the event of a side collision of the vehicle.

Abstract: A dynamoelectric machine assembly for connection to a system controller. The assembly includes at least one input contact for receiving a control signal from the system controller and a processor coupled to the input contact. The processor is configured to operate the assembly in a pulse width modulation (PWM) mode when the control signal is a PWM control signal and to operate the assembly in a serial mode when the control signal is a serial communication signal.

Abstract: A control system for determining a line pull of a winch. The system comprises a first sensor configured to measure a torque generated by the winch to retract a cable and a second sensor configured to measure a number of layers of the cable retracted by the winch, wherein a layer of the cable is formed by a single wrap of the cable onto a container. The system further comprises a monitoring circuit coupled to the first and second sensors, wherein the monitoring circuit is configured to determine the line pull of the winch based on the torque generated by the winch and the number of layers of cable retracted onto the container.

Abstract: Some embodiment of the present disclosure provide an electric motor comprising a power drive configured to supply electric power to different components of the motor that operate with different power inputs. The motor is configured to transform the electric power into mechanical work to perform on a load. The electric motor is configured to be used as a pump or a blower in a HVAC system. The electric motor includes a first power source connected to and supplying an electric power to the windings of the motor, a second power source connected to and supplying an electric power to a logic circuit configured to control operation of the motor, a third power source connected to and supplying an electric power to an external device that is configured to be connected to the motor and not enclosed in a housing, and a housing enclosing the first, second, and third power source.

Abstract: The present invention relates to an adjuster for adjusting drink temperature, including a base, a container arranged on the base, a stay bar seating fixed on the base and extending into the container from the base of the container and secured to the container, a stay bar device arranged in the stay bar seating and formed as a muff coupling with the stay bar seating without liquid leakage, one end of thereof extending out of the stay bar seating and the other end forming the driving end, and an actuating device cooperating with the driving end of the stay bar device to drive the stay bar device.

Abstract: A combined motor-battery system comprising an electric power source adapted to convert self-originating electrical current to mechanical power utilizing a set of common functional structures. Preferred embodiments include an electrochemical cell comprising field reactive electrodes that directly produce extractable mechanical forces in the presence of a magnetic field.

Abstract: A method for transferring existing data from a source motor to a target motor includes retrieving the existing data from the source motor, optionally converting the existing data into a new format, and at least one of storing, erasing, writing, overwriting, or replacing software and/or data on the target motor such that the existing data is stored on the target motor in a format compatible with the target motor.

Abstract: A method for transferring existing data from a source motor to a target motor includes retrieving the existing data from the source motor, optionally converting the existing data into a new format, and at least one of storing, erasing, writing, overwriting, or replacing software and/or data on the target motor such that the existing data is stored on the target motor in a format compatible with the target motor.

Abstract: A method for transferring existing data from a source motor to a target motor includes retrieving the existing data from the source motor, optionally converting the existing data into a new format, and at least one of storing, erasing, writing, overwriting, or replacing software and/or data on the target motor such that the existing data is stored on the target motor in a format compatible with the target motor.

Abstract: Methods and systems are provided for capturing and saving motor drive information in a non-volatile memory to facilitate troubleshooting and motor fault analysis. The motor drive includes a power conversion system that provides electrical power to an electric motor and a control system providing a control input to the power conversion system, and an information capture system is provided with an information capture component to capture motor drive information and a non-volatile memory component to store the captured information.

Abstract: A combined motor-battery system comprising an electric power source adapted to convert self-originating electrical current to mechanical power utilizing a set of common functional structures. Preferred embodiments include an electrochemical cell comprising field reactive electrodes that directly produce extractable mechanical forces in the presence of a magnetic field.

Abstract: A drive system for a shaft of a machine is described, which includes a control device, a drive controller and at least one input receiving input signals and at least one output supplying output signals. The drive controller includes drive controller firmware which stores linkable functional control elements. The control device enables both logical combination of individual inputs and/or outputs and/or internal states and parameterization and/or configuration of the functional control elements. The drive controller and the control device in the drive system are synchronized, with the drive controller operating as master. A drive system therefore has Programmed Logic Controller (PLC) functionality.