Design method for double closed loop direct current speed regulation system optimal controller

Abstract

The invention is directed to the field of double closed loop direct current speed regulation system technology and particularly relates to a design method for a double closed loop direct current speed regulation system optimal controller. Firstly, the time constants of other links other than the controller are determined. The structure of the controller is selected. An OCD program is adopted so that two string grade controllers of the double closed loop direct current speed regulation system can be simultaneously designed through a computer auxiliary design technology. The parameters of the controllers can be directly obtained through the execution of the program. When the system works, the optimal controller design program starts to operate to directly obtain the parameters of the inner and outer shroud controllers when a JITAE index is optimal. Under a structure of double closed loop of electricity flow and speed, the two controllers control the continuous feedbacks of armature current and speed signal of a motor so that the speed regulation of the motor can be realized. The method surpasses the traditional way that it is a must to design the outer shroud based on the parameters of the inner shroud, the design thinking is more concise and the program execution is convenient and fast. Meanwhile, the calculation error of the system is reduced and the result is more accurate because simplification and approximation in system model derivation are reduced.

Description

technical field [0001] The invention belongs to the technical field of double-closed-loop DC speed regulation systems, and in particular relates to a design method for an optimal controller of a double-closed-loop DC speed regulation system. Background technique [0002] There are two traditional design methods for double-closed-loop DC speed control systems: one is to use the Bode diagram method; the other is to use engineering calculation methods. But both methods have disadvantages. When using the Bode diagram method to design the controller, it is necessary to first obtain the open-loop logarithmic frequency characteristics of the designed closed-loop system, and then determine the expected characteristics of the corrected system according to the performance indicators. After repeated trials, the characteristics of the controller can be determined. , and calculate its parameters. This trial and error process required skilled design skills and was accompanied by a lot o...

AI Technical Summary

Problems solved by technology

But it only has parameter calculation formulas. When debugging the system, if the system performance is not satisfactory, the direction of parameter adjustment cannot be made clear; moreover, some approximations and simplifications are made while ignoring secondary factors during the formation of formulas and charts, which makes the calculation results exist. There is a certain error

For complex situations that cannot be simplified into typical systems, engineering calculation methods are helpless

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