87results about "Linear motor control" patented technology

According to an aspect of the invention, there is provided a method of controlling a discontinuous linear motor system comprising a mover and a motor, the method comprising: obtaining a set of current values representing current flowing through coils of the motor, wherein a reaction plate of the mover is in a position relative to the coils; obtaining a set of voltage values representing voltage present over the coils; predicting a velocity, acceleration and / or position of the mover from the set of current values and the set of voltage values; and, calculating input parameters for control of the motor to move the mover to a desired velocity, based on the prediction.

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.

An apparatus for synchronously controlling a six-phase motor includes a first controller configured to calculate a length of a next switching pulse width modulation (PWM) period, output at least one PWM signal indicating a length value of the next switching PWM period, and control an abc phase of the six-phase motor by using a control duty cycle for the abc phase and the length value of the next switching PWM period. The apparatus also includes a second controller configured to obtain a length value of a next switching PWM period according to the at least one PWM signal, and control an xyz phase of the six-phase motor by using the control duty cycle for the xyz phase and the length value of the next switching PWM period.

The invention relates to the technical field of motors, in particular to an excitation type series excitation linear motor and a control method, the excitation type series excitation linear motor comprises a shell, a stator coil and a rotor coil, the stator coil and the rotor coil are arranged in the shell, one end of the shell is axially and slidably connected with a driving shaft, and a control module used for adjusting the magnitude and direction of thrust is arranged outside the shell. One end of the driving shaft penetrates into the shell and is connected with the rotor coil, and the other end penetrates out of the shell. The stator coil is sleeved outside the rotor coil, an air gap exists between the stator coil and the rotor coil, the stator coil and the rotor coil are connected in a series excitation mode, and the driving shaft is enabled to perform linear motion through excitation magnetic field coupling between the stator coil and the rotor coil. Compared with an existing linear motor, the linear motor does not depend on a permanent magnet to form a magnetic field any more, the manufacturing cost of the motor is effectively reduced, the problems of assembly and failure related to the permanent magnet are solved, and the linear motor has high thrust density and wider application range and can be particularly applied to the fields of needleless injection, electromagnetic riveting and the like with high thrust strength requirements.

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).

A discontinuous linear motor system comprises a mover and a motor. The system is controlled by obtaining a set of current values representing current flowing through coils of the motor, wherein a reaction plate of the mover is in a position relative to the coils, obtaining a set of voltage values representing voltage present over the coils, predicting a velocity, acceleration and / or position of the mover from the set of current values and the set of voltage values, and calculating input parameters for control of the motor to move the mover to a desired velocity, based on the prediction. The sets of current and voltage values may be in a rotating reference frame. The sets of current and voltage values may be three-phase values in a stationary reference frame. The step of predicting may comprise applying a trained machine learning model to the sets of current and voltage values, wherein the trained model is configured to output a velocity, acceleration, or position value of the mover.

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.

A control device controls a generation force of a force generating mechanism including a permanent magnet and an armature that generate an adjustable force between a first member and a second member. The control device includes: a command value acquisition unit that acquires a generation force command value of the force generating mechanism; a relative displacement acquisition unit that acquires a relative displacement of the permanent magnet and the armature; a movement direction command acquisition unit that acquires a movement direction command of the armature with respect to the permanent magnet from the generation force command value; and an actual movement direction acquisition unit that acquires an actual movement direction of the armature with respect to the permanent magnet from the relative displacement. The generation force command value is corrected by acquiring a correction value based on the movement direction command and the actual movement direction.

The present application is suitable for the technical field of linear motor driving, and provides a driving voltage generation method of a linear motor and a related device, aiming at using the driving voltage generated by the driving voltage generation method to effectively control the linear motor to express the vibration effect in a specific direction. The method of the present application embodiment comprises: determining the system gain and the current phase of the linear motor system; obtaining the target acceleration and the initial value amplitude of the linear motor; and calculating the driving voltage based on the target acceleration, the initial value amplitude, the system gain and the current phase.

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).

An apparatus for synchronously controlling a 6-phase motor includes: a first controller configured to calculate a length of a next switching pulse-width modulation (PWM) period, output at least one PWM signal indicating a length value of the next switching PWM period, and control abc phases of the 6-phase motor by using a control duty for the abc phases and the length value of the next switching PWM period. The apparatus also includes a second controller configured to obtain the length value of the next switching PWM period according to the at least one PWM signal, and control xyz phases of the 6-phase motor by using a control duty for the xyz phases and the length value of the next switching PWM period.

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.

A method for determining a commutation angle of a permanent magnetic linear motor comprising a coil array and a mover physically connected to a moving body, the method comprising: applying to the coil array a first set of currents, adapting a phase offset of the first set of currents until the moving body reaches a first stationary condition with a first settled phase offset and a first actuation force, determining an estimated second actuation force, applying to the coil array and varying a second set of currents thereby transitioning the actuation force from the first actuation force to the estimated second actuation force via one or more intermediate force setpoints, further adapting the phase offset of the second set of currents until the moving body reaches a second stationary condition with a second settled phase offset, determining the commutation angle based on the first and the second settled phase offset.

A linear motor and method for operating a linear motor are disclosed. The linear motor comprises a stator and a shuttle. Cogging forces in at least one direction of movement of the shuttle along the stator are determined as a function of the relative position of the shuttle with respect to the stator in the at least one direction of movement and while the drive coils in the region of the shuttle are non-energized. The determined cogging forces are stored in a control unit. The stored cogging forces are used by the control unit to compensate the cogging forces during operation of the linear motor in dependence of the relative position between a shuttle for which the cogging forces are compensated and the stator.

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.

The invention provides a camera motor driving circuit, a driving chip, a camera module and electronic equipment, and the camera motor driving circuit comprises a control module which is used for outputting a control signal according to the received motor stroke control data; the motor driving module is used for outputting a driving signal according to the control signal so as to drive a camera motor; wherein in at least one period of the driving signal, the driving signal has a plurality of pulses, and the pulse amplitudes of at least two pulses are not equal. The power consumption and the generated heat in the control process of the camera motor can be reduced.