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Proportional amplifier PID parameter self-tuning control method, and proportional amplifier and proportional electromagnetic valve

A proportional amplifier and parameter self-tuning technology, used in power amplifiers, adaptive control, general control systems, etc., can solve problems such as difficulty in adapting to various needs, achieve real-time control and comprehensive control, avoid mechanical wear, control high precision effect

Active Publication Date: 2014-04-09
NINGBO HOYEA MACHINERY MFG
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Problems solved by technology

[0004] The control function of the control system manufactured by the above control method is simple, it is difficult to adapt to various needs, and there are obvious temperature drift and zero drift

Method used

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  • Proportional amplifier PID parameter self-tuning control method, and proportional amplifier and proportional electromagnetic valve
  • Proportional amplifier PID parameter self-tuning control method, and proportional amplifier and proportional electromagnetic valve
  • Proportional amplifier PID parameter self-tuning control method, and proportional amplifier and proportional electromagnetic valve

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Embodiment Construction

[0031] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0032] Please refer to figure 1 , in one embodiment of the present invention, proportional amplifier PID parameter self-tuning control method, it comprises the steps:

[0033] S1: detect the real-time parameter value of the output terminal of the proportional amplifier and calculate the deviation and the deviation change rate according to the real-time parameter value and the given parameter value;

[0034] The deviation change rate indicates the range of error change per unit time.

[0035] S2: Fuzzifying the deviation and the deviation change rate into a corresponding deviation fuzzy subset and deviation change rate fuzzy subset;

[0036] S3: Obtain the fuzzy subset of PID parameters according to the fuzzy inference me...

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Abstract

The invention provides a proportional amplifier PID parameter self-tuning control method comprising the following steps: a real-time parameter value of an output end of the proportional amplifier is detected, and deviation and deviation change rate are calculated according to the real-time parameter value and a given parameter value; the deviation and the deviation change rate are fuzzified into a corresponding deviation fuzzy subset and a deviation change rate fuzzy subset; a PID parameter fuzzy subset is obtained according to the deviation fuzzy subset, the deviation change rate fuzzy subset and a PID parameter fuzzy inference mechanism; after the PID parameter fuzzy subset is de-fuzzified, a PID control parameter is obtained according to a PID parameter initial value and the de-fuzzified change value; output of the proportional amplifier is controlled according to the PID control parameter, the real-time parameter value of the output end of the proportional amplifier is detected again, and the steps are repeated until the real-time parameter value of the output end of the proportional amplifier is equal to the given parameter value. PID parameters are controlled in fuzzy and self-tuning ways so that the proportional amplifier can be self-adaptive to various application occasions. The invention also provides one type of proportional amplifier and a proportional electromagnetic valve.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to a proportional amplifier PID parameter self-tuning control method, a proportional amplifier and a proportional solenoid valve. Background technique [0002] The proportional amplifier is an important part of the proportional control system of the proportional solenoid valve. Its function is to provide a specific performance current to the proportional solenoid valve, so that the flow or pressure output by the proportional solenoid valve is proportionally controlled by the electronic device. [0003] Most of the existing proportional amplifiers use analog control, which is mainly composed of operational amplifiers and power electronic components. The displacement controls the opening size of the proportional solenoid valve to achieve the purpose of controlling the pressure or flow of hydraulic circuit oil. [0004] The control function of the control system manufactured...

Claims

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Application Information

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IPC IPC(8): G05B13/02H03F3/20F16K31/06
Inventor 陈飞飞顾振国翁之旦张璐璐张策
Owner NINGBO HOYEA MACHINERY MFG
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