49results about "Linear motor control" patented technology

Technical solutions for diagnosing a sensor fault in an actuator incorporating a permanent magnet direct current (PMDC) motor are described, including: measuring, by means of a position sensor, the position of the PMDC motor; determining, based on the measured position, an estimated motor speed; measuring, by means of a current sensor, the current in the PMDC motor; determining, based on the measured current in the PMDC motor, a voltage command for the PMDC motor; determining, based on the measured current and the voltage command and using a motor speed observer, an observed speed of the PMDC motor; determining a differential speed as the difference between the estimated motor speed and the observed speed; determining, based on the differential speed, the sensor fault; and performing an action in response to the determination of the sensor fault.

A transfer system includes a drive unit that supplies drive currents to coils disposed along a transfer path, a thrust command generation unit that generates a thrust command that is the command value of a thrust to be produced by a mover, based on a motion target value that is a time-series motion target value, and a current command generation unit that generates, as current commands, current target values that are the target values of the drive currents to be provided to coils so that the thrust produced by the mover follows the thrust command. The current command generation unit generates the current target values to be provided to coils, using part of an actual thrust characteristic determined by the characteristics of the plurality of coils and the mover, so as to reduce the number of the coils through which the drive currents flow.

The present application provides a kind of calibration device, calibration method and calibration program.The calibration device has: drive control part, in the calibration of the drive device with magnetic field detection part and multiple drive parts, multiple drive parts are sequentially controlled to drive the object in the movable range for making the object with lens movable along the optical axis direction, multiple drive parts drive the object in each interval in the interval that movable range is divided, magnetic field detection part detects the magnetic field corresponding to the position of object;Position acquisition unit obtains position data indicating data related to the position of object;Magnetic field acquisition unit obtains magnetic field data indicating the magnetic field corresponding to the position of object;And generating unit, based on position data and magnetic field data, to generate end point information indicating the value of magnetic field data when the object is located at each end point of multiple intervals, determine each drive range in multiple intervals using end point information.

To provide a transport device which can detect a position and / or posture of a movable element over a wide range and with high accuracy when an incremental encoder is used.SOLUTION: A transport device includes: a stator; a movable element which has a first scale and can move in a first direction along the stator; a plurality of first detectors which are installed to face the first scale and detect a position of a second direction intersecting the first direction of the movable element; and a control part for controlling the position and / or posture of the movable element. The first scale and the first detectors configure an incremental encoder, the plurality of first detectors are arranged along the first direction in the stator by leaving prescribed intervals, and the control part corrects position information of the movable element by a detection value of one first detector on the basis of position information of the movable element by a detection value of the other first detector.SELECTED DRAWING: Figure 8B

The invention relates to a method for moving a rotor (20) in a planar drive system (1). The planar drive system (1) has a first stator module (11), a second stator module (12), and a rotor (20), and the first stator module (11) and the second stator module (12) are arranged in a mutually spaced manner, a gap (30) being formed between the first stator module (11) and the second stator module (12). A first magnetic field (91) can be generated by the first stator module (11), and a second magnetic field can be generated by the second stator module (12), wherein the first magnetic field (91) or the second magnetic field (92) can hold the rotor (20) in a vertical position at a distance to the surface of the first stator module (11) and / or the second stator module (12), and the first magnetic field (91) and / or the second magnetic field has a first magnetic field strength (93) in order to hold the rotor (20) in the vertical position. The first magnetic field (91) and / or the second magnetic field can additionally also be used to change the horizontal position of the rotor (20). The first stator module (11) has a first close-up region (71) adjacent to the gap (30), and the first magnetic field (91) has a second magnetic field strength (94) in the first close-up region (71) when the rotor (20) is moved over the gap (30), said second magnetic field strength (94) being greater than first magnetic field strength (93).

Embodiments of the present application disclose a driving waveform adjustment method and device, equipment and a readable storage medium. In response to an interrupt event, a vibration description file corresponding to the interrupt event is obtained. A vibration parameter in the vibration description file corresponding to the interrupt event is used to adjust the driving waveform, so that the vibration of the linear motor is adapted to the interrupt event, and the vibration is adjusted following the change of a scene. The vibration function is expanded, and a user is provided with a better vibration experience.

A system with a synchronous linear motor and a method for operating a system, wherein a mobile unit is movably arranged along a conveyor line and stator windings of the synchronous linear motor are arranged along the conveyor line, wherein the mobile unit has a permanent magnet arrangement whose permanent magnets are in operative connection with the stator windings, wherein the respective stator winding is electrically supplied from the AC-side connection of a respective inverter, wherein the DC-side connections of the inverters are connected in parallel to each other and to a first series circuit, which consists of a resistor R and two first controllable switches, wherein a second series circuit can be connected in parallel to the series circuit, which has at least one energy storage device and one controllable switch.

A method may include receiving topology information associated with a linear motor system that includes multiple track modules. Each track module may include one or more motors. The topology information may include one or more media access control (MAC) addresses associated with the motors. The method may also include associating one or more IP addresses with the MAC addresses associated with the motors, generating a configuration file associated with the linear motor system based on the topology information and the IP addresses, and transmitting one or more commands to the motors to control or adjust one or more operations of the motors based on the configuration file.

The conveying system includes a mover, a plurality of stators, a plurality of drive devices (D9 to D11) for driving the stators, and a host controller (40) for controlling the drive devices. The drive devices are daisy-chain connected such that the internal circuits of the drive devices are connected in parallel to a main circuit power line (EP3) that transmits power from a main circuit power supply, which is the power supply used when driving the stators, from a converter (C23) under management to the drive devices. The drive devices are also daisy-chain connected to the host controller via a control detection signal line (L2) for transmitting signals therebetween. The host controller supplies power from the main circuit power supply to the drive devices by controlling the converter, identifies the connected drive devices, which are the drive devices connected to the converter, by receiving the power supply voltage values detected by the drive devices from the drive devices, and detects the connection configuration of the connected drive devices by specifying the connection order of the connected drive devices by transmitting and receiving signals to and from the connected drive devices.

An apparatus and method for stabilizing the temperature of an electric machine of a metering system are provided in which a field-oriented control (FOC) component of an input current of the electric machine is a direct-axis (Id) current component that is aligned with a magnetic field of a moving primary and does not cause movement of the electric machine, and a quadrature-axis (Iq) current component that is perpendicular to the magnetic field of the moving primary and generates movement of the electric machine, and wherein the Id current component is applied to the motor such that the motor temperature reaches and / or is maintained at a value within a previously determined temperature range.

Technical solutions are described for diagnosing a sensor error in an actuator having a permanent magnet DC (PMDC) motor, including: measuring, by a position sensor, a measured position of the PMDC motor; determining, based on the measured position, an estimated motor velocity; measuring, by a current sensor, a measured current in the PMDC motor; determining, based on the measured current in the PMDC motor, a voltage command for the PMDC motor; determining, based on the measured current and the voltage command, and using a motor velocity observer, an observed velocity of the PMDC motor; determining a difference velocity as a difference between the estimated motor velocity and the observed velocity; determining, based on the difference velocity, the sensor error; and performing an action in response to determining the sensor error.

A linear motor control device (100) is provided with: a plurality of inverters (1) for supplying power to a stator winding (20) of a linear motor (200); a plurality of PWM signal generation units (10) for operating each of the plurality of inverters (1); a carrier signal generation circuit (4) that generates a carrier signal (Cw) for generating the PWM signal (Pw); and a phase control device (11) comprising a clock circuit (6) and a counter circuit (6) for outputting a timing signal (Tm) to the plurality of carrier signal generation circuits (4), the carrier signal generation circuits (4) generating carrier signals (Cw) of different phases by receiving the timing signal (Tm), and supplying the carrier signals (Cw) to each of the plurality of PWM signal generation units (10). A plurality of PWM signal generation units (10) use the carrier signal (Cw) to generate PWM signals (Pw) of different phases, and output the PWM signals (Pw) to each of a plurality of inverters (1) to operate the inverters (1).

The invention relates to a method and a device for monitoring the operation of a transport device (1) in the form of a longitudinal stator linear motor having a transport section (2) along which a multiplicity of drive coils (3) are arranged. In this case, at least one transport unit (Tn) is moved along the transport section (2), wherein drive magnets (4) of the transport unit (Tn) interact with the drive coils (3) of the transport section (2) to produce a propulsion force (Fv). At least one drive coil (3) of the transport section (2) is selected as a measurement coil (M) (S1). While the at least one transport unit (Tn) is moving over the measurement coil (M), a regulating unit (RE) predefines a manipulated variable (SG) for the measurement coil as an excitation signal in such a way that the respective present coil current (iph) in the measurement coil (M) is regulated to a predefined specified value (ispecified) (S2). A unit (EE) records a time characteristic of the manipulated variable (SG) while the at least one transport unit (Tn) is moving over the measurement coil (M) (S3), and evaluates the recorded time characteristic of the manipulated variable (SG) for monitoring of the transport device (1) by an evaluation unit (AW) for evaluating the time characteristic of the manipulated variable (SG) (S4).

Provided is a position information correction device capable of effectively correcting position information of a linear motor detected by a position detector. A position information correction device is provided with: a memory (23) for storing a pre-measured position-dependent error component and a speed-dependent error component; a position-dependent error correction unit (22a) that reads, from the memory (23), a position-dependent error component corresponding to the position information (P) from the position detector (12), and corrects the position information (P) using the position-dependent error component; and a speed-dependent error correction unit (22b) that reads, from the memory (23), a speed-dependent error component corresponding to the position information (P) from the position detector (12), and corrects the position information (P) using the speed-dependent error component and the speed information of the linear motor.

A control apparatus includes a driver that outputs power based on a first control signal; a wireless power transmission system that is connected downstream of the driver, that receives first power, and that supplies second power to a motor through wireless power transmission; and a compensator that compensates a difference between a phase of the first control signal and a phase of current output from the wireless power transmission system.

The application discloses a position determination method, device and equipment and a storage medium, and relates to the technical field of magnetic suspension. The magnetic suspension line body comprises a plurality of conveying sections, the method comprises the following steps: acquiring a feedback position value of each conveying section and the length of a mover on the magnetic suspension line body; determining a target position value according to the interval between two adjacent feedback position values and the length of the mover; and determining the position of the mover according to the target position value. Thus, the technical problem that a mover position determination method applied to a magnetic suspension system is urgently needed in the prior art can be solved.

The invention relates to a planar drive system (1) having at least one stator module (10) and a rotor (100), wherein the stator module (10) comprises at least one stator unit (11) having at least one coil arrangement (12), wherein the coil arrangement (12) can be energized and is designed to generate a stator magnetic field over a stator face (13) as a result of the energization, wherein the stator module comprises at least one magnetic field sensor (14), wherein the rotor (100) has a magnet arrangement (114) and can be moved over the stator face (13) by means of an interaction between a rotor magnetic field of the magnet arrangement (114) and the stator magnetic field, wherein the rotor (100) can serve as an input mechanism and / or as an output mechanism, wherein a control unit (20) is designed to compare a position of the rotor magnetic field detected by means of the magnetic field sensor with a position expected as a result of the energization of the coil arrangement (12) and to ascertain a deviation of the position from the expected position as an external movement and to identify an input therefrom, and / or wherein the control unit (20) is designed to control an output via a preset movement of the rotor (100) and for this purpose to energize the coil arrangement (12) such that the rotor (100) moves as defined by the preset movement.

The present disclosure provides a controller integrated circuit and an actuator and a camera module including the same, the actuator of the camera module including: a comparison unit sequentially calculating each error value by comparing a current position of a lens barrel with a target position; a controller integrated circuit (IC) generating a control signal by applying a control gain based on a proportional-integral-derivative (PID) control method to each error value sequentially input from the comparison unit to the controller integrated circuit; and a driving circuit unit generating a driving signal in response to the control signal to move the lens barrel to the target position, wherein the controller integrated circuit changes the control gain in response to the error values sequentially input including both overshoot and undershoot.

This conveyance system comprises: a movable element; a plurality of stators; a plurality of drive devices (D9-D11) that drives the stators; and a higher-level controller (40) that controls the drive device. The drive devices are daisy-chained from a converter (C23) to be managed to a main circuit power supply line (EP3) so that the internal circuits of the drive devices are connected in parallel with each other, said main circuit power supply line (EP3) transmitting power from a main circuit power supply that is a power supply used in driving the stator, and are also daisy-chained from the higher-level controller to a control detection signal line (L2) that transmits a signal to and from the higher-level controller. The higher-level controller controls the converter and thereby supplies power from the main circuit power supply to the drive device, receives a power supply voltage value detected by the drive device from the drive device and thereby identifies a connection drive device that is the drive device connected to the converter, transmits and receives signals to and from the connection drive device and thereby identifies the connection order of the connection drive devices, and detects the connection configuration of the connection drive devices.

The present invention provides an alternating power supply circuit and an alternating power supply method for a long-stator linear motor, and relates to the technical field of motors. This alternating power supply circuit for a long-stator linear motor comprises three-phase stator winding branches; wherein the stator winding branches of each phase are connected to a power converter; wherein the stator winding branch of each phase comprises N segments of stator windings connected in series, each segment of stator winding being connected in parallel to a switching circuit; wherein the parallel-connected stator winding is short-circuited when the switching circuit is closed.Applying this alternating power supply circuit to a long stator linear motor can increase the speed of the stator's alternating power supply, as well as reduce the number of power supply devices and the complexity of the system.

A current based resonant frequency tracking system and methods can include: providing a haptic pattern with a processor, the haptic pattern including both a haptic pattern start time and a haptic pattern stop time; driving a linear resonant actuator according to the haptic pattern with an amplifier coupled to the processor, and the amplifier having an output coupled to the linear resonant actuator; detecting a current sense signal having a back electromotive force current after the haptic pattern stop time with a current frequency tracker coupled to the output of the amplifier; measuring a frequency of the back electromotive force current as a resonant frequency of the linear resonant actuator; and detecting cycles in the back electromotive force current after the haptic pattern stop time.

A conveying system (10) comprises a drive unit (20A) that supplies drive currents to several coils (9A1 to 9A5) arranged along a conveying path (8), a thrust command generation unit (15) that generates a thrust command, which is a command value of a thrust to be applied by a runner (4A) based on a motion target value, which is a time series motion target value, and a current command generation unit (13') that provides current target values, which are the target values ​​of the drive currents to be supplied to the several coils (9A1 to 9A5), as current commands, so that the thrust applied by the runner (4) follows the thrust command.The current command generation unit (13') generates the current target values ​​to be provided to the multiple coils (9A1 to 9A5) using a portion of actual thrust characteristics determined by characteristics of the multiple coils (9A1 to 9A5) and the rotor (4A), thus reducing the number of coils through which the drive currents flow.

The application belongs to the technical field of electric machines, and discloses a variable-stroke cylindrical linear motor driving device, which comprises a primary assembly, a secondary assembly and an I-shaped guide rail support, the primary assembly comprises at least one cylindrical primary, a through groove which is communicated with the inner cavity of the cylindrical primary is formed on the side wall of the cylindrical primary along the direction of the central axis, there is a groove between the guide rails of the I-shaped guide rail support, the cylindrical primary is fixed in the groove, the through groove faces upward, the central axis of the cylindrical primary is parallel to the direction of the guide rails, the cylindrical primary is connected with an external control system, the secondary assembly comprises a ferromagnetic cylindrical core and a cavity-outside projectile, the cavity-outside projectile is arranged above the cylindrical primary and is connected with the guide rails and can slide in cooperation with the guide rails, a connecting piece is arranged in the through groove, the upper end and the lower end of the connecting piece are connected with the ferromagnetic cylindrical core and the cavity-outside projectile respectively, and the ferromagnetic cylindrical core is suspended in the inner part of the cylindrical primary. The device can avoid the electromagnetic thrust fluctuation caused by the end magnetic field distortion.

The linear motor system comprises a rail with a plurality of electromagnets arranged along the rail, which are supplied with electrical energy by a power supply network, at least one slider guided on the rail and movable along the rail and comprising drive magnets for cooperating with the electromagnets of the rail for moving the slider, a control device for controlling the movement of the slider relative to the rail by energizing a portion of the electromagnets by means of a drive current, which is arranged to energize at least a portion of the electromagnets by means of a damping current, such that said energization by the damping current does not result in additional movement of the slider along the rail and / or does not result in a change of the movement of the slider along the rail generated by the drive current and / or does not result in additional forces on the slider and / or does not result in a change of the forces on the slider generated by the drive current, on the one hand, and / or, on the other hand, wherein said energization by the damping current is performed for reducing oscillations and / or current and voltage fluctuations in the power supply network.

Disclosed are a switching power supply circuit, a switching power supply method, and a long-stator linear motor for a long-stator linear motor, relating to the motor technology field. The switching power supply circuit for the long-stator linear motor includes a three-phase stator winding branch circuit, each phase of the stator winding branch circuit is connected to a converter, each phase of the stator winding branch circuit includes N-segment stator windings connected in series, and a switch circuit is connected in parallel to each segment of the stator winding, so that when the switch circuit is turned on, it short-circuits the parallel-connected stator windings. By using this switching power supply circuit for the long-stator linear motor, the speed of stator switching power supply can be improved, reducing the amount of power supply equipment used and the complexity of the system.

A linear motor control device (100) comprises: a plurality of inverters (1) that supply energy to the stator windings (20) of a linear motor (200); a plurality of PWM signal generation units (10), each operating a plurality of inverters (1); carrier signal generation units (4) that generate carrier signals (Cw) for use in generating PWM signals (Pw); and a phase control unit (11) comprising a clock circuit (6) and counter circuits (5) for outputting timing signals (Tm) to the carrier signal generation units (4). By receiving the timing signals (Tm), the carrier signal generation units (4) generate the carrier signals (Cw) having different phases and supply the carrier signals (Cw) to the PWM signal generation units (10).The PWM signal generation units (10) generate the PWM signals (Pw) which have different phases, using the carrier signals (Cw), and they output the PWM signals (Pw) to the inverters (1) respectively.

A landing gear (1) for an aircraft includes: a landing gear structure (2) attached to an airframe (10); a linear motor (3) that is interposed between the airframe and the landing gear structure and configured to extend and retract along an axis X to store the landing gear structure in the airframe and to deploy the landing gear structure from the airframe; and a controller (4) configured to control the linear motor such that the landing gear structure switches between a landing position and a retracted position.

A landing gear (1) for an aircraft includes: a landing gear structure (2) attached to an airframe (10); a linear motor (3) that is interposed between the airframe and the landing gear structure and configured to extend and retract along an axis X to store the landing gear structure in the airframe and to deploy the landing gear structure from the airframe; and a controller (4) configured to control the linear motor such that the landing gear structure switches between a landing position and a retracted position.

Provided are a conveying device and a conveying method capable of detecting a speed of a conveyed object more accurately than that in the related art. The conveying device includes a coil 107 that includes a core 105 and a winding 106, a current detection unit 109 that detects a current flowing through the winding 106 of the coil 107, a drive unit 108 that supplies a voltage to the coil 107, and a control unit 110. The control unit 110 estimates a conveying speed of a holder 102 provided with a magnetic body 103 based on the current flowing through one winding 106 due to an influence of electromagnetic induction.

A computer system comprising processing circuitry is provided. It is being arranged in a vehicle having a linear machine comprising an actuator having a plurality of permanent magnets and at least one stator comprising at least a first stator coil and second stator coil. The processing circuitry is configured to control the behavior of at least the first stator coil so that it is configured to act as an electromagnet creating an electromagnetic field, and control the behavior of at least the second stator coil so that it is configured to act as a generator, and thereby generating energy to an energy storage system.