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A Design Method of Control Loop Based on Cutoff Frequency

A technology of cut-off frequency and design method, applied in general control systems, control/regulation systems, testing/monitoring control systems, etc., can solve problems such as low efficiency, difficulty in obtaining theoretical support, and heavy control loop design workload, and achieve good results. The effect of controlling quality and robustness, improving design efficiency

Active Publication Date: 2020-06-12
北京航天飞腾装备技术有限责任公司
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Problems solved by technology

When the controller parameters are more than three or more, the control loop design workload is huge and the efficiency is low, and the control quality of the designed control loop also largely depends on the experience and level of the designer. The design method belongs to the "trial and error" method, it is difficult to obtain theoretical support, and it is not convenient for designers to improve their design level

Method used

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  • A Design Method of Control Loop Based on Cutoff Frequency
  • A Design Method of Control Loop Based on Cutoff Frequency
  • A Design Method of Control Loop Based on Cutoff Frequency

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Embodiment Construction

[0026] The present invention provides a method for designing a control loop based on a cut-off frequency, which is applicable to the design of a single-loop or multi-loop control loop for forward series proportional control, integral control or proportional-integral control, comprising the following steps:

[0027] (1) Determine the cut-off frequency ω of the open-loop control loop according to the characteristics of the controlled object and the actuator and the rapidity requirements of the control system c , this ω c It is an important design index of the control loop, which can be regarded as the control loop bandwidth.

[0028] (2) if figure 1 As shown, the forward path controller G will be divided c Other control links other than (s) are equivalent to the generalized controlled object P(s), such as figure 2 As shown, if there are multiple control loops, it is necessary to equivalently transform the inner loop including the controlled object into a generalized controll...

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Abstract

The invention discloses a control loop design method based on the cut-off frequency. The control loop design method is suitable for single-loop or multi-loop control loop design adopting forward series proportional control or integral control or proportional-integral control. According to the control loop design method, other control links except a forward access controller are equated to be generalized controlled objects, according to the rapidity requirement of a control system, the cut-off frequency is determined, and based on the cut-off frequency and the generalized controlled objects, controller parameters are quantificationally calculated and determined; and theoretical analysis and simulation verification indicate that a designed control loop meets rapidity design indexes and has the great control quality.

Description

technical field [0001] The invention relates to a control loop design method, which belongs to the field of control system design. Background technique [0002] Traditional control loop design mostly adopts the "trial and error" method to determine the controller parameters. The designer needs to do a lot of tedious and repetitive work. First, the structure of the control loop must be determined. When the time-domain index parameters and frequency-domain index parameters of the loop do not meet the design index, it is possible to determine another control loop structure or select a set of controller parameters to calculate the various indicators of the control loop, and iteratively, it is worth satisfying up to the design index of the control loop. When the controller parameters are more than three or more, the control loop design workload is huge and the efficiency is low, and the control quality of the designed control loop also largely depends on the experience and level...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B23/02
CPCG05B23/0202
Inventor 王明光钟高伟魏丽霞王晓燕李广张超宗焕强
Owner 北京航天飞腾装备技术有限责任公司
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