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Motor compound control system and control method thereof

A technology of compound control and control method, applied in control systems, motor control, vector control systems, etc., can solve the problems of unstable computing power of virtual instrument software and influence of control effects, etc., to improve computing power, improve control accuracy, expand The effect of the speed range

Inactive Publication Date: 2015-06-10
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The system takes the multi-function data acquisition card and PC as the core of the whole control system, directly uses the CPU in the PC to process the data collected by the data acquisition card, which improves the processing and control ability of the system to a certain extent, but the The system still has deficiencies in realizing complex control algorithms
Although the computing power of pure computer is far greater than that of DSP, under the existing operating system environment, the computing power of virtual instrument software is unstable mainly due to the underlying kernel or Windows housekeeping, so the running speed of virtual instrument software is not purely controlled. The effect of DSP is good, especially in complex control algorithms
On the other hand, since the platform on which the data acquisition card and virtual instrument software run is not a deterministic real-time operating system, it is difficult for the control algorithm running on this basis to accurately set the cycle time only by software timing, which also seriously affects the control effect. influences

Method used

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  • Motor compound control system and control method thereof
  • Motor compound control system and control method thereof
  • Motor compound control system and control method thereof

Examples

Experimental program
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Embodiment 1

[0021] Such as image 3 , Figure 4 shown. This embodiment takes a linear motor compound control system based on an adaptive control processing algorithm as an example. The motor composite control system includes a PC, a data acquisition card that is a PCI board inserted into the PCI slot of the PC, a drive inverter for a linear motor, a linear motor and a data acquisition sensor for collecting the current operating state of the motor. The 6 digital output ports of the data acquisition card are connected to the power switch interface corresponding to the drive inverter to control the output of the drive inverter; the analog input ports and orthogonal coding ports of the data acquisition card are connected to the output ports of the data acquisition sensor , to receive the data of the data acquisition sensor; the PC is equipped with LabVIEW software, responsible for data acquisition processing and the control signal output based on the SVPWM control strategy; the DSP processo...

Embodiment 2

[0029] Such as image 3 shown. This embodiment takes the compound control system of the rotating electrical machine based on the fuzzy control processing algorithm as an example. The place identical with embodiment 1 no longer repeats narration, and difference is: data acquisition card is the PXI plate card that inserts PXI chassis; Described data acquisition sensor comprises the current sensor of collecting motor three-phase current and the displacement sensor of collecting motor displacement ; The motor is a rotating motor.

[0030] The data acquisition card is NI PXIe-6368 of NI Company: 16 synchronous analog inputs (32 Ms / s total throughput, 16-bit resolution), 4 analog outputs (3.33 ms / s, ±10 V), 48 digital I / O lines; 4 32-bit counter / timers for PWM, encoder, frequency, and event counting. The PXI chassis is the NI PXI-1042 series of NI Corporation: built-in 10 MHz reference clock, PXI trigger bus, star trigger and local bus, and the operating temperature is 0-55 °C. ...

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Abstract

The invention discloses a motor compound control system and a control method of the motor compound control system. The motor compound control system comprises a personal computer (PC), a data acquisition card, a driving inverter, a motor and a data acquisition sensor, wherein the data acquisition card, the driving inverter, the motor and the data acquisition sensor are connected with the PC, the data acquisition card controls the output of the driving inverter and receives data from the data acquisition sensor, virtual instrument software is installed in the PC and is responsible for data acquisition and processing and output of control signals based on a space vector pulse width modulation (SVPWM) control strategy, and a complex algorithm controller regarded as an independent module is mounted in a digital signal process (DSP) which is responsible for core computing of complex algorithms in the motor compound control system. An analog digital input / output port of the data acquisition card is connected with the DSP through a photoelectric converter and optical fibers so that data between the PC and the DSP can be transferred. Compared with the prior art, the DSP and the virtual instrument software are both used in the motor compound control system and undertake different tasks, and therefore the computing ability of the motor compound control system can be improved, complex control algorithms can be realized, and the control accuracy of the motor can be improved.

Description

technical field [0001] The invention belongs to motor control technology, and in particular relates to a motor compound control system and a control method using digital signal processing technology combined with virtual instrument technology, through the combination of a digital processor and a computer platform, the efficient control of the motor is realized. Background technique [0002] At present, the commonly used motor digital servo control uses a digital signal processor (DSP) as the core of the control system. By collecting the state quantity of the actuator when it is running, it is calculated and processed inside the DSP, and the actuator is controlled according to a certain algorithm. Its principle is as shown in the accompanying drawings of the specification figure 1 shown. However, due to the limited operation and processing speed of DSP (such as the commonly used TI company TMS320F28X DSP, its maximum processing speed is 150 MIPS), it is difficult to use more...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P29/00H02P25/06H02P21/14H02P23/00
Inventor 金建勋陈焱
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA