Abstract: In accordance with an embodiment, an actuator control circuit includes a driver circuit connected to a ringing characteristic determination circuit. A signal generator that is configured to generate an output signal having first period that has first and second portions where the first portion longer than the second portion is connected to the ringing characteristic determination circuit. Another embodiment includes a method for controlling an actuator by determining a resonant frequency and a ringing amplitude of an actuator signal; generating a control signal in response to the resonant frequency and the ringing amplitude of the actuator signal; and causing the actuator to move in response to the second drive signal.

Abstract: The present disclosure provides a positive and negative rotation control circuit and fan system, which can positively or negatively rotate a fan motor according to an end connecting to different external components or being floating. When the end generates an oscillatory fan signal, the positive and negative rotation control circuit negatively rotates the fan motor for a period of time after the positive and negative rotation control circuit is started for a delay time, to execute the operation of exhausting the accumulated dust, so that a fan connecting to the fan motor may exhaust the accumulated dust from an electronic device. Then the control circuit positively rotates the fan motor to execute the operation of dissipating heat, so that the fan may dissipate heat in the situation of having less dust within the electronic device. Accordingly, the heat dissipation effect of the fan may be enhanced.

Abstract: A switching device includes an energy store and a measuring device connected to a control apparatus. The energy store is connected in series between the supply connection and the power supply. The control apparatus can monitor the energy supply of the switching device in the area between the supply connection and the power supply taking place via the supply connection via the measuring device. If the energy supply monitored by the measuring device falls into a critical range, and using the energy from the energy store: the control apparatus connects the semiconductor switch in an electrically conductive manner and then opens the second switch; and subsequently switches the semiconductor switch to an electrically non-conductive state and then opens the first switch.

Abstract: A rotating electric machine control system has a power control unit (PCU) and a control section separately disposed therein. The apparatus receives a trigger signal from a communicator of the PCU via a trigger communication line from an MG ECU when the MG ECU obtains electric angles from a rotation sensor. The communicator, upon receiving an input of the trigger signal, generates a communication frame that includes plural detection values from a current sensor and a voltage sensor. Then, the communicator outputs the communication frame to the MG ECU via a multiplex communication line. The MG ECU performs a preset process for a control of an inverter and a booster converter based on the detected electric angles and the communication frame matching with those electric angles.

Abstract: An embodiment of the invention relates to a switchgear which includes a control unit, a supply connection and a first current path. The first current path includes a first electromechanical switch and, connected in series to the first switch, a parallel connection of a second electromechanical switch to a semiconductor switch. The switchgear includes an energy accumulator and a measuring device. A control unit is capable of monitoring energy supply coming in through the supply connection. If the energy supply through the supply connection reaches a critical range, the control unit controls the output of the switching signals via the energy of the energy accumulator such that: in a first step, the semiconductor switch is switched to be electrically conducting and the second switch is then opened, and in a second step, the semiconductor switch is switched to be electrically non-conducting and the second switch is then opened.

Abstract: A rotating electric machine control system having a power control unit equipped with a voltage converter and a controller. The controller is equipped with an operation unit having a time corrector for obtaining time from first and second timers with reference to an ignition signal and correcting a relative time difference between the timers. The operation unit obtains electric angles at a preset cycle after correcting time. A communicator obtains electric currents and voltages when obtaining the electric angles for generating a communication frame, and outputs the communication frame to the operation unit via the multiplex communication line. The operation unit simultaneously performs an operation for controlling an inverter and a booster converter based on the obtained electric currents, the voltages, and the electric angles, for reducing the number of communication lines between the power control unit and the controller without compromising controllability of the voltage converter.

Abstract: In an apparatus, a synchronizing unit synchronizes a measurement timing of values of first and second phase currents by a current sensor with a measurement timing of a rotational angle of a rotor by a rotational angle sensor. A current calculator calculates, based on the first and second parameter signals and the rotational angle of the rotor, values of two phase currents in a rotational coordinate system defined with respect to the rotor. A transmitter transmits the values of the two phase currents using a communication protocol. A controller communicates with the transmitter using the communication protocol to receive the values of the two phase currents. The controller controls the first phase current, the second phase current, and a third phase current flowing through respective first, second, and third phase windings of a three-phase rotary machine according to the values of the two-phase currents.

Abstract: An apparatus for controlling a motor/generator having a plurality of windings comprises a stator magnetically coupled to a rotor and having a plurality of slots and a plurality of windings, a controller and a power converter means. Each winding is installed in two corresponding slots, and a plurality of magnetic poles and a plurality of phases in each pair of poles are formed when currents flow through the windings, and the windings are configured such that the number of phases and the number of poles can be dynamically. The controller comprises a pole and phase mapping for controlling the winding of the motor/generator to a pole and a phase, and a phasor control for controlling currents of the windings such that the number of poles of the motor/generator and the number of phases in a pair of poles are dynamically adjusted through a phase relationship between the currents of the windings. The power converter means is controlled by the controller for controlling the winding currents of the motor/generator.

Abstract: In accordance with an embodiment, a drive circuit is provided for driving for a motor wherein the drive circuit includes a rotational state generation circuit connected to a state controller. The state controller is connected to a pulse width modulation detection circuit, a timer, and a duty control controller. In accordance with another embodiment, a method for driving the motor includes coupling a single Hall sensor to the motor and using the single Hall sensor to determine a position of a rotor of the motor. The drive circuit pulls the rotor so that one of its north pole or south pole is adjacent to the single Hall sensor. After the pole of the rotor is adjacent to the rotor, the motor starts.

Abstract: An apparatus for compensating for a torque for a current order of a driving motor includes: a current order generator configured to: i) receive a torque order (Tref*), ii) generate a magnetic flux-based current order map using a generated driving point ratio (1/?max), and iii) generate a current order using the generated current order map; and an iron loss torque compensator configured to extract an iron loss torque compensation value for the generated current order and a speed (Wrpm) of the driving motor.

Abstract: An electric converter is provided which uses independently controlled field coils to impress a temporary magnetic field on a rotor movable relative to one or more armatures. In some embodiments, the rotor of the programmable electric converter is rotatable with the axis of rotation being on a horizontal or vertical axis. In various embodiments, the electric converter disclosed herein may be adapted for use as a continuous power solution to provide power for a limited period of time in the event of a power outage by absorbing energy and storing it mechanically in the rotor. In some embodiments, the electric converter may be utilized as a generator. In some embodiments, both AC and DC could be simultaneously produced, where AC is generated in one armature coil and DC in another coil. In some embodiments, the programmable electric converter can operate as an AC to AC converter, AC to DC converter, DC to AC converter, or DC to DC converter.

Abstract: If a bus current a bus current detector 11 detects exceeds a current cutoff value, an overcurrent detector 12 supplies a gate driver 14 with an open signal for turning off switching elements 5-10 to break the current to a motor 1. Besides, when the overcurrent detector 12 detects an overcurrent, a feedback controller 15 provides the gate driver 14 with a short-circuit braking instruction to apply short-circuit braking after breaking the power supply, and to restart PWM control from a state in which the short-circuit braking is being applied and the duty ratio command value is reset at 0.

Abstract: 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 may be totally enclosed, the shaft may be sealed using a labyrinth seal, and the motor electronics assembly may be contained within the motor shell. The motor may comprise shapes and materials to promote cooling by air flow and thermal conduction. The motor may further comprise a touch-sensitive interface, may operate at high speed in response to a signal, and may provide a single location for the connection of all inputs. A motor according to the present invention may have improved operating characteristics.

Abstract: According to one embodiment, a sensorless control apparatus for a synchronous motor, includes a PWM processing unit which pulse-width-modulates a three-phase voltage command, and thereby generates a gate command for an inverter, a high-frequency voltage calculator which obtains a high-frequency voltage component included in an output of the PWM processing unit or an equivalent output value, a high-frequency current calculator which obtains a high-frequency current component included in a current response value from a synchronous motor driven by the inverter, and an estimated angle calculator which calculates an estimated phase angle indicative of an estimated value of an angle of rotation of the synchronous motor, based on a plurality of pairs each including the high-frequency voltage component and the high-frequency current component which respectively include cosine components or sine components at an equal frequency, the pairs obtained for at least two different frequencies.

Abstract: A control apparatus controlling a motor for driving an object includes: a relay allowing and interrupting electric power supply to the motor; switching devices in multiple phases for allowing and interrupting energization to windings; a controller for the relay and the switching devices; a current detecting circuit for a current flowing through a merging point of the windings and the switching devices; a current limit circuit for keeping an average of the current within a predetermined range; a standard position learning device for learning a standard position of the motor; a voltage detecting circuit for detecting a voltage applied to each switching device; and an error detecting device for detecting an error in the current detecting circuit based on the voltage and the current when the relay turns on, and all switching devices turn off.

Abstract: A parameter adjustment support device configured to effectively adjust an acceleration/deceleration parameter of a drive axis, even when an operator thereof is inexperienced. The Support device includes: an actual acceleration/deceleration characteristic obtaining part which obtains an actual acceleration/deceleration characteristic curve relating to a velocity and an acceleration of the drive axis, from a numerical controller or an external storing device; a parameter setting part which sets or changes the parameter based on an external input; an acceleration/deceleration characteristic displaying part which generates a commanded acceleration/deceleration characteristic curve relating to the velocity and the acceleration of the drive axis based on the setup or updated parameter, and contrastively displays the obtained actual curve and the generated commanded curve; and a setting information outputting part which outputs the setup or updated parameter to the numerical controller.

Abstract: A controller has a control unit generating a control signal to control a drive motor and a friction compensation unit adding a friction compensation signal to the control signal for compensating for a positioning error caused by friction in a guide unit. When reversing the direction of movement of the movable body, the friction compensation unit generates a friction compensation signal in accordance with a function f(?) representing a friction compensation value uf by a relationship with a variable ? and asymptotically approaching the maximum value and the minimum value of the friction compensation value uf and having an inflection point therebetween, and adds the generated friction compensation signal to the control signal generated by the control unit during movement of the movable body a predetermined movement distance from before to after the reversing.

Abstract: A manual pulse generator stores pulse data for past several cycles, along with an up-to-date pulse, into its buffer area. A numerical control device receives the pulse data transmitted from the manual pulse generator through a communication unit. An accumulated pulse amount calculation unit determines the amount of pulses to be accumulated in the buffer area according to the frequency of occurrence of communication errors of the received pulse data. A servo-output delay unit commands a control unit to start outputting to a servo processing unit after the received pulses are accumulated to the amount determined by the accumulated pulse amount calculation unit.

Abstract: A control apparatus controlling a motor for driving an object includes: switching devices in multiple phases, each of which allows and interrupts energization to a corresponding winding of the motor; a controller for the switching devices; a current detecting circuit for a current flowing through each winding and each switching device; a current limit circuit limiting the current to match to a current limiting value; a standard position learning device learning a standard position of the motor such that the current limit circuit limits the current, and the motor rotates until the object stops at a limit position of a movable range; a rotation angle change amount detecting device detecting a change amount of a rotation angle of the object; and an error determination device determining that the current detecting circuit malfunctions when the change amount is out of a predetermined range, and the object changes between first and second states.

Abstract: An apparatus and a method for controlling a motor are provided. The apparatus for controlling a motor includes a temperature sensor that is configured to detect a temperature of an inverter, and a variable amplifier that is configured to variably set an amplification gain that corresponds to the detected temperature of the inverter and amplify and output a resolver signal output from a resolver based on the variably set amplification gain, based on an excitation signal. A controller is then configured to estimate a position of a motor rotor based on the amplified resolver signal to calculate a flux angle and an excitation signal generator is configured to generate the excitation signal that corresponds to the calculated flux angle and output the generated excitation signal to the resolver.