Full digital alternating-current servo driving system based on DSP (digital signal processor)

A technology of AC servo and drive system, applied in the field of AC servo drive system and all-digital AC servo drive system, it can solve the problems of large dispersion of analog servo, few control interfaces, low reliability, etc., and achieve rich control interfaces, state The effect of complete display and compact structure

Inactive Publication Date: 2013-03-27
WUXI FORE AUTOMATION TECH
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  • Abstract
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Problems solved by technology

The analog servo has large dispersion, zero drift, low reliability, and has fewer control interfaces, complex structure, and narrow amplitude modulation ratio.

Method used

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  • Full digital alternating-current servo driving system based on DSP (digital signal processor)

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Embodiment Construction

[0006] Below in conjunction with accompanying drawing, the technical scheme realization method of invention is described: figure 1 In this paper, a high-performance digital signal processor-based motion control chip is proposed, and the intelligent power module IPM is used as the inverter switching element, supplemented by a single-chip microcomputer for control parameter setting, keyboard processing, status display, and serial communication. In order to achieve the above object, the present invention adopts the following technical scheme: a DSP-based all-digital AC servo drive system, including a three-phase rectifier, a soft start circuit, an IPM inverter, a servo motor, and a gate Drive circuit, fault detection circuit, switching power supply, digital signal processor DSP, single-chip microcomputer, RS232 serial port, keyboard display, I / O control, pulse quantity interface, analog quantity interface, photoelectric encoder, Hall element; three-phase power supply After being ...

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Abstract

The invention discloses a full digital alternating-current servo driving system based on a DSP (digital signal processor). The full digital alternating-current servo driving system comprises a single-chip microcomputer and inverter switch elements which form a main loop, a control loop, a data acquisition circuit and the like used for completing position control, speed control, rotation torque control, JOG control, internal speed control, state display and data exchange of an alternating-current servo driver. The full digital alternating-current servo driving system has the advantages that defects of high dispersibility, null drift, low reliability and the like of analog servo are overcome, advantages of digital control in terms of control precision and control method flexibility are realized sufficiently, and the system is simple and flexible in control, complete in status display, rich in interfaces, compact in structure, high in amplitude modulation ratio and the like.

Description

technical field [0001] The invention relates to an AC servo drive system, in particular to a DSP-based all-digital AC servo drive system, which belongs to the technical field of digital signal processing control circuits. 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...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/06
Inventor 钱国东
Owner WUXI FORE AUTOMATION TECH
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