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Permanent-magnet synchronous motor full-digital alternating-current servo system based on DSP (digital signal processor)

A technology of AC servo and permanent magnet synchronization, applied in the field of DSP control, can solve the problems of low reliability and large dispersion of analog servo, and achieve the effect of enhancing reliability, overcoming large dispersion of analog servo, and flexible expansion capability

Inactive Publication Date: 2013-03-27
WUXI FORE AUTOMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Analog servo has large dispersion, zero drift and low reliability

Method used

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  • Permanent-magnet synchronous motor full-digital alternating-current servo system based on DSP (digital signal processor)
  • Permanent-magnet synchronous motor full-digital alternating-current servo system based on DSP (digital signal processor)

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Embodiment Construction

[0007] Below in conjunction with accompanying drawing, the technical scheme realization method of invention is described: figure 1 Among them, the hardware structure system of the all-digital AC servo system consists of two parts: TMS320LF2407A constitutes the core unit of the controller; CPLD / FPGA realizes the management function of the expansion unit of the controller. Including control unit and expansion unit, the control unit includes I / O interface, serial communication interface SCI, test interface JTAG, electromagnetic interference interface EMI, field bus interface CAN, PWM output module, PA / D module, quadrature pulse code / System-level chip interface QEP / CAP, integrated module SPI / EVB / I / O, among them, other fault signals and system interfaces are respectively connected to the I / O interface bidirectionally, the output terminal of the keyboard is connected to the input terminal of the I / O interface, and the RS232 and Two-way connection of the serial communication interfa...

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PUM

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Abstract

The invention discloses a permanent-magnet synchronous motor full-digital alternating-current servo system based on a DSP (digital signal processor). The system comprises a control unit and an expansion unit. The control unit comprises an I / O(input / output) interface unit, a serial communication interface, a test interface, an electromagnetic interference interface, a filed bus interface, a PWM (pulse width modulation) output module, an A / D(analog / digital) module, a orthogonal pulse encoding / system-level chip interface and an interface integrated module. The system has high response speed and control precision, is easy and convenient to operate and high in testing precision, has engineering practice value, and is applied to precise testing for platform fire-control equipment. Besides, by the digital means, defects of high dispersibility, null drift, low reliability and the like of analog servo are overcome, driver structure is simplified, and system reliability is enhanced.

Description

technical field [0001] The invention relates to an AC servo system, in particular to a DSP-based full-digital AC servo system for a permanent magnet synchronous motor, which belongs to the technical field of DSP control. Background technique [0002] A control circuit that uses an analog signal as a working signal. An analog signal refers to all signals that are continuous in time and value. The control signals in the speed and current double-closed-loop speed regulation system circuits and the physical quantities output by the regulator are continuous functions of time. They constitute an analog control circuit, and the closed loop formed by the speed negative feedback and a regulator is used as the outer loop, which is called The speed loop, the regulator is called the speed regulator, expressed by ST. The closed loop formed by current negative feedback and another regulator is placed within the speed loop, called the current loop, and the regulator is called the current ...

Claims

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Application Information

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IPC IPC(8): H02P6/00
Inventor 钱国东
Owner WUXI FORE AUTOMATION TECH