Cooperative controller for two-motor vector control frequency control system and construction method thereof

Abstract

The invention discloses a tuning controller of a two-motor vector control frequency control system and a manufacture method thereof, including a neural net general inverse and a linear closed-loop controller, wherein a frequency converter, two induction machines and a common load are integrated to compose a two-motor vector control frequency control system; the neural net general inverse is connected at the front of the two-motor vector control frequency control system, to compound a pseudolinear system consisting of two coupled speed sub-systems and a strain sub-system; a speed controller and a strain controller constitute the closed-loop controller; the neural net general inverse and the linear closed-loop controller are connected in series to compose the neural net general inverse turning controller, to obtain excellent coordination control of the rotation speed and the strain, which not only designs the novel multi-motor vector control frequency control system, but realizes the net control with wide application foreground, convenient construction system and low cost in the old multi-AC motor system.

Description

technical field [0001] The present invention is a coordination controller of a two-motor vector control frequency conversion speed regulation system and its construction method, which is suitable for high-performance coordination control of two vector control frequency converters driving two induction motors to drive a common load (such as a banded load) , belongs to the technical field of electric drive control equipment. Background technique [0002] In industrial production, there are a large number of two motors or even multiple motors driving the same load (such as strip loads, etc.), which require coordinated operation at the same speed. Currently, most such systems use DC motors. Due to the complex structure of the DC motor, it is difficult to maintain, and there is a commutation problem, which brings inconvenience to use. Due to the general vector control inverter working in the mode of constant voltage frequency ratio is small in size, light in weight, has good sp...

AI Technical Summary

Problems solved by technology

Because the two-motor vector control frequency conversion speed regulation system is a complex nonlinear coupling system, the tension of the system is related to the speed difference between the two induction motors, and the speed and tension are coupled with each other. The commonly used proportional-integral-derivative PID adjustment cannot achieve the speed and The decoupling control of tension cannot achieve high-performance coordinated control

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