142results about "Linear motor control" patented technology

There is provided a transport system comprising: a stator having a first magnetic force unit; a mover having a second magnetic force unit; and a control unit. The control unit controls a magnetic force acting between the first magnetic force unit and the second magnetic force unit to transport the mover in a first direction. The stator has a first regulating member row including a plurality of first regulating members and a second regulating member row including a plurality of second regulating members, the mover, in a second direction intersecting the first direction, being disposed between the first regulating member row and the second regulating member row. The control unit performs a first process of applying a rotational force to the mover such that one of the first regulating members in the first regulating member row serves as a fulcrum when the mover contacts the first regulating member row.

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.

A method, processing system and control circuit for driving a linear resonance actuator, LRA, in an electronic device, comprising generating a drive signal to drive the LRA, wherein the frequency of the drive signal is initially set to an initial frequency (fi); determining a phase difference (Δφ) between a voltage and a current over the LRA; and adjusting the frequency of the drive signal using a feedback control loop such that the determined phase difference (Δφ) converges to a non-zero pre-determined phase difference at resonance (Δφ0). The invention further relates to an electronic device with a linear resonant actuator driven using such method,processing system or control circuit.

A procedure 100, comprising the following steps, is proposed: Acquisition of sensor data by a sensor unit in a first cycle time T1 and transmission of the acquired sensor data in the first cycle time T1 to a motor control unit in a first step 105, Transmitting the sensor data from the motor control unit to a control unit in a second cycle time T2 in a second step 110, Processing of the sensor data by the control unit in a third step 115 in the second cycle time T2, where the control unit in the third step 115 is designed to approximate the compensation parameter 315 from the sensor data for a compensation interval, Transmitting the processed sensor data from the control unit to the motor control unit in the second cycle time T2 in a fourth step 120, and Evaluating the processed sensor data to provide the compensation parameter 315 from the motor control unit in a fifth step 125 in the first cycle time T1 based on the third step 115 and current sensor data for which the compensation parameter can be determined from the motor control unit in the first cycle time T1.

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.

The invention discloses a position determination method and device, 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, and the method comprises the steps that the feedback position value of each conveying section and the length of a rotor on the magnetic suspension line body are obtained; determining a target position value according to the distance between two adjacent feedback position values and the length of the rotor; and determining the position of the rotor according to the target position value. Therefore, the technical problem that a rotor position determination method applied to a magnetic suspension system is urgently needed in the prior art can be solved.

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.

A method for operating an electromagnetic transport device is provided. According to the method, an area sum current is determined for a neutral point area of the long stator of the transport device, and a compensation current is fed into at least one active drive coil of the long stator such that a deviation of the area sum current from a predefined area sum current setpoint is reduced.

A linear transport device (1) comprises a transport path including a stator, a plurality of transport bodies moving along the transport path, a magnetizer (MA) installed on each of the transport bodies and generating a magnetic field to be used in position detection, a magnetic detection element (30) installed on the transport path and detecting the magnetic field, a computing device (40) calculating the position of each of the transport bodies based on the magnetic field detected by the magnetic detection element, and a correction value memory storing a correction value set which is a combination of correction values for correcting the position of each of the transport bodies.The magnetizer comprises a magnet (10A) in which magnetic poles of different polarities are alternately arranged along a moving direction of the transport bodies, and a magnetic shield (20A) which is a magnetic body and formed of a resin containing a magnetic material powder. The magnetic shield (20A) blocks magnetic lines of force emanating from the magnet by being provided on two end surfaces of the magnet and on an upper surface of the magnet in the moving direction, the upper surface being a surface opposite a counter surface facing the transport path. The number of correction value sets is smaller than the number of transport bodies. The computing device corrects the position of one of the transport bodies using one of the correction value sets commonly applicable to another of the transport bodies.

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 discloses a control method for a mobile assembly of an intelligent magnetic drive system, relates to a mobile assembly control system, and solves the technical problem that in the prior art, when a magnetic drive system is used for article transportation, linear movement and nonlinear movement of a single magnetic drive system cannot be specifically recognized and detected, in particular to single magnetic drive linear movement recognition. When a single magnetic drive system carries out transportation, movement recognition is carried out on the transportation action of linear movement of the moving assembly, linear track floating data and linear track stable data are collected, and linear movement control is carried out according to data comparison; and single magnetic drive non-linear movement identification: during transportation of a single magnetic drive system and non-linear movement of a moving assembly, carrying out identification detection on movement actions, collecting conveying influence information and track influence information, and carrying out non-linear movement control according to information analysis.

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 invention discloses a method and a device for online adjusting control parameters of a voice coil motor in real time. The method comprises the following steps: acquiring voltages at two ends of a coil of the voice coil motor in real time; calculating back electromotive force according to voltages at two ends of the voice coil motor coil; calculating the resonant frequency of the voice coil motor according to the back electromotive force; calculating a K value of the voice coil motor according to the resonant frequency of the voice coil motor; and the control parameters of the voice coil motor are adjusted in real time according to the K value of the voice coil motor. According to the invention, the AF focusing or OIS anti-shake performance of the voice coil motor can be improved.

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.

To provide a motor control system, a motor control device, and a motor control method that can reduce the processing load on a host control device.SOLUTION: A motor control system 1 includes a host control device 3 that outputs control commands, multiple motor control devices 5A to 5D that control multiple motors 7A to 7D on the basis of the control commands and drive mechanical elements 15A to 15D, and an external sensor 17 for outputting information on the mechanical element 15D to the motor control device 5D. Each of the multiple motor control devices 5A to 5D includes an information sharing unit 23 for sharing information on the mechanical element 15D with each other through data communication among the multiple motor control devices 5A to 5D, a command conversion unit 25 for converting the shared information on the mechanical element 15D into a control command for autonomous operation by the motor control devices 5A to 5D themselves, and a motor control unit 27 for controlling a motor 7 on the basis of the converted control command.SELECTED DRAWING: Figure 2

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.

An electric percussion device (100) comprises a frame (101), an actuator member (103) linearly movable with respect to the frame, and a linear electric machine (104) comprising a mover (105) for directing impacts to the actuator member and a stator (106) having windings for generating a magnetic force directed to the mover when electric currents are supplied to the windings. The electric percussion device comprises a power electronic converter (107) for driving the linear electric machine and a controller (108) for controlling the power electronic converter so that operation of the electric percussion device fulfills functionality defined by values of one or more operating parameters. The controller is configured to carry out an experiment run where the values of the one or more operating parameters are varied between temporally non-overlapping periods of percussion work and, after the experiment run, select most advantageous one or more values of the one or more operating parameters.

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.

The invention is suitable for the technical field of position measurement, and provides a rotor position measurement method based on combination of absolute position and relative displacement measurement, and the method comprises the steps: obtaining target composite image information based on a built image displacement measurement system; registering the target composite image information in a preset absolute position information base, and determining absolute displacement information of the rotor to be detected according to a registration result; and analyzing the relative displacement of the rotor to be measured according to the absolute displacement information and the target composite image information so as to obtain the final position information of the rotor to be measured. According to the method, global matching search is improved into feature search during registration, so that the timeliness of measurement is greatly improved; relative displacement fine measurement is added after an absolute position coarse registration stage, so that a final measurement error only depends on an error of a fine measurement algorithm, deviation caused by an overlarge sample interval is avoided, and finally high-precision absolute position information is obtained. And the position measurement precision of the rotor is improved.

A controller (31) controls the generative force of a magnetic actuator (7, 10) serving as a force generation mechanism. The controller (31) is provided with a thrust command correction value calculation unit (33) that obtains the correction value (thrust command correction value) of a thrust command value of the magnetic actuator (7, 10). The thrust command correction value calculation unit (33) is provided with an operation mode determination unit (33E) that obtains an operation mode from the thrust command value and a displacement sensor value. The thrust command correction value calculation unit (33) obtains the correction value (thrust command correction value) using the operation mode obtained by the operation mode determination unit (33E).

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).