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A Control Method of Transition Process Target Value Based on Smooth Switching Function

A smooth switching and transition process technology, applied in the field of control, can solve problems such as overshoot or long adjustment time, and achieve the effect of less adjustment parameters

Active Publication Date: 2022-02-01
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, to study a simple and practical control method for the target value of the transition process is to solve the practical control problems that are prone to overshoot or the adjustment time is too long in the control process.

Method used

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  • A Control Method of Transition Process Target Value Based on Smooth Switching Function
  • A Control Method of Transition Process Target Value Based on Smooth Switching Function
  • A Control Method of Transition Process Target Value Based on Smooth Switching Function

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Embodiment Construction

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0035] A kind of transition process target value control method based on smooth switching function of the present invention, comprises the following steps:

[0036] Step 1: Select the upper and lower limits of the independent variable of the smooth switching function, namely t + and t - .

[0037] Such as figure 1 and figure 2 Shown, the abscissa t + =0.3,t - =0, the ordinate is the value of the smooth switching function f(x).

[0038] The second step: according to the performance requirements of the control system and the characteristics of the smooth switching function, select an appropriate smooth switching function from three types of smooth switching functions, such as power function, polynomial function and trigonometric function. The overshoot of the control system and the adjustment time of the transition process are essentiall...

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Abstract

The invention relates to a transition process target value control method based on a smooth switching function, comprising the following steps: according to the transition process adjustment time of the controlled object, selecting the upper limit and the lower limit of the independent variable of the smooth switching function; then adjusting according to the overshoot amount and the transition process According to the requirements of time, select the appropriate smooth switching function from three types of smooth switching functions such as power function, polynomial and trigonometric function; finally, according to the smooth switching function, calculate the target value in the transition process or the control amount of the controller. It provides a technical guarantee for realizing that the actual value can track the target value quickly, smoothly and stably during the transition process.

Description

technical field [0001] The invention relates to the technical field of control, in particular to a method for controlling a transition process target value based on a smooth switching function. Background technique [0002] The basic requirements of the control system mainly include rapidity, accuracy and stability, and its control process is usually divided into transition process and steady state process. The adjustment of the transition process directly affects the performance of the steady-state process, so adjusting the transition process is very important to the entire control process, and it also has practical significance and application value for the performance improvement of the control system. [0003] In the past, people paid more attention to the steady-state process, but regardless of the transition process or the steady-state process, the target value is always the same, which easily leads to problems such as excessive overshoot and long adjustment time in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 姜志斌刘铁军
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI