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AC servo motor driver control method

A technology of AC servo motor and control method, applied in electric controllers, controllers with specific characteristics, etc., can solve problems such as difficulty in meeting the complexity and precision requirements of the working environment of AC servo drives, and achieve improved stability and fast Responsive current, fast convergence effect

Inactive Publication Date: 2019-06-18
JIANGSU UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problem that the current traditional PI controller is difficult to meet the complexity and precision requirements of the working environment of the AC servo driver, the invention provides a control method for the AC servo motor driver

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Embodiment Construction

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0047] In one embodiment of the present invention, as figure 1 As shown, the AC servo motor driver includes a three-phase inverter drive module connected to the AC servo motor, a power supply module, a power conversion module, a current detection module, a position detection module, and a protection circuit. Such as figure 1 As shown, the DSP chip model for AC servo motor control is TMS320F2806. The power pin of the DSP chip is connected to the power conversi...

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Abstract

The invention provides an AC servo motor driver control method. The method comprises steps that S1, a AC servo motor is controlled for start, and a given rotation speed is set; S2, a rotor position signal and a phase current of the AC servo motor are detected; S3, the phase current is transformed to obtain the d-axis current, the d-axis reference current is set, and a d-axis reference voltage is obtained through a current inner loop PI controller; S4, an angular velocity deviation value is calculated according to the rotor position signal and the given rotation speed, a q-axis reference voltage is obtained by a velocity outer loop PI controller and the current inner loop PI controller, and the velocity outer loop PI controller adopts the multi-agent chaotic particle swarm optimization algorithm for parameter setting; and S5, an SVPWM signal for driving the AC servo motor is generated according to the d-axis reference voltage and the q-axis reference voltage. The method is advantaged inthat the method not only can quickly respond to the current and suppress current spikes, but also can make an AC servo motor drive system have strong anti-interference, and improves system stability.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to an AC servo motor driver control method. Background technique [0002] In recent years, servo motors and their servo control systems have been widely used in various fields. Whether it is advanced CNC machine tools, industrial robots, factory automation, office automation and other fields, servo motors and their servo control systems are inseparable. Servo motors have been widely used in various industrial production machines, such as screen printing machines, CNC small machine tools, woodworking engraving machines, and laser cutting machines. Servo motors are also used in aerospace, military and other fields. [0003] The AC servo motor driver is the core control part of the servo motor system, and its performance directly affects the performance of the entire system. The AC servo motor driver adopts vector control, including current loop and speed loop adjustment syste...

Claims

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Application Information

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IPC IPC(8): G05B11/42
Inventor 倪福银李天奕沃松林向荟羽王琪陈立兴诸一琦
Owner JIANGSU UNIV OF TECH
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