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A non-overshoot pid control method with controllable critical speed

A control method and critical speed technology, applied in the field of PID-based control, can solve problems such as failure to reach the specified speed, overshoot, and failure to meet control needs.

Active Publication Date: 2021-07-06
WUXI LONGSHENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the traditional PID control method has situations such as overshoot, the specified speed cannot reach the control target, etc. For products with special requirements for the control method, the traditional PID control method cannot meet the control needs

Method used

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  • A non-overshoot pid control method with controllable critical speed
  • A non-overshoot pid control method with controllable critical speed
  • A non-overshoot pid control method with controllable critical speed

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Embodiment Construction

[0018] A non-overshoot PID control method with controllable critical speed, by using a correction method to modify the internal target value of PID calculation before the PID control calculation of suitable working conditions, so that the actual control conforms to the ideal state. The method specifically includes the following steps:

[0019] A. Determine whether the current working condition meets the preset working condition. If it meets the preset working condition, go to step B. If it does not meet the preset working condition, the internal target value calculated by PID is equal to the target value input by the system, and step C is executed.

[0020] The preset working conditions described in this step, for example, when the actual position of the controlled object is close to the target position and so on.

[0021] B. Use the correction method to modify the internal target value of the PID calculation.

[0022] The correction method described in this step adjusts the ...

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Abstract

The invention discloses a PID control method with controllable critical speed without overshoot, which specifically includes the following steps: judging whether the current working condition conforms to the preset working condition, and if it conforms to the preset working condition, using a correction method to modify the internal target of PID calculation value, if it does not meet the preset working conditions, the internal target value calculated by PID is equal to the target value input by the system; PID calculation and control are performed according to the internal target value calculated by PID. By modifying the internal target value of a suitable working condition, the present invention can realize the function of quickly reaching the target point without overshoot and controllable speed of reaching the target point on the basis of traditional PID control, and can simultaneously meet the requirements of fast response speed, The stable state has strong anti-interference, no overshoot, and the specified speed reaches the control target, which meets the special control requirements of the product and provides a reliable guarantee for the operation of the product.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to a PID-based control method. Background technique [0002] Automatic control technology is one of the fastest growing and most influential technologies in the 20th century, and also one of the most important high technologies in the 21st century. As far as the definition is concerned, automatic control technology is the application of cybernetics technology. It is to complete a certain control task through an automatic control system with certain control functions, to ensure that a certain process is carried out as expected, or to achieve a certain preset goal. . From the perspective of control methods, there are two types of automatic control systems: closed-loop and open-loop. Today's closed-loop automatic control technologies are based on the concept of feedback to reduce uncertainty; the elements of feedback theory include three parts: measurement, comparison and ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B11/42
CPCG05B11/42
Inventor 严人杰
Owner WUXI LONGSHENG TECH
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