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Fuzzy control method for diesel locomotive electric control system

A technology of fuzzy control and electric control system, applied in general control system, control/adjustment system, test/monitoring control system, etc., can solve problems such as no online parameter self-tuning, poor robustness, torque error, etc., to achieve Robust, simple algorithm, and easy-to-construct effects

Inactive Publication Date: 2018-02-23
杨淑芬
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Problems solved by technology

For its control algorithm, vector control is mostly used. However, traditional vector control speed control systems mostly use PI control technology with simple structure, but it is often limited to the linear model of the motor, and the load range is large. There is a problem of poor robustness when changing
Especially at low speeds, PI control often cannot quickly follow the given value of speed, resulting in torque error and speed error, and it does not have the function of online parameter self-tuning, therefore, PI control cannot accurately meet the requirements in different conditions. Under working conditions, the system requires self-tuning of parameters, which affects control performance

Method used

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Embodiment Construction

[0022] The specific implementation of the present invention will be further described below in conjunction with the examples.

[0023] A fuzzy control method for an electric control system of a diesel locomotive according to the present invention is characterized in that after fuzzy quantification of the deviation between the power given value and the feedback value and the deviation change rate by using a fuzzy controller, the fuzzy quantity output is determined by the control rule table, After the fuzzy control quantity is defuzzified, the precise quantity is used for the input of the excitation current loop of the main generator.

[0024] Fuzzy controller of the present invention adopts the fuzzy controller of two-dimensional structure, by engine speed detection and output circuit Ne, the speed-power conversion link Ne-P that is connected with this engine speed detection and output circuit Ne, respectively with this speed- The deviation quantizer Ke and the deviation change...

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Abstract

The invention relates to a fuzzy control method for an electric control system of a diesel locomotive, which is characterized in that after a fuzzy controller is used to fuzzily quantify the deviation between a power given value and a feedback value and the deviation change rate, the fuzzy quantity output is determined by a control rule table, After the fuzzy control quantity is defuzzified, the precise quantity is used for the input of the excitation current loop of the main generator. Improve the robustness of constant power control of electric-wheeled vehicles; reliably control complex systems that are difficult to establish accurate mathematical models; apply intelligent control theory to the transmission control of internal combustion locomotives, select more appropriate PI parameters, and load Or when the speed changes suddenly, the system response time is faster.

Description

technical field [0001] The invention relates to the technical field of electric control systems of diesel locomotives, in particular to a fuzzy control method for electric control systems of diesel locomotives. Background technique [0002] At present, AC drive systems are widely used in diesel locomotives. For its control algorithm, vector control is mostly used. However, traditional vector control speed control systems mostly use PI control technology with simple structure, but it is often limited to the linear model of the motor, and the load range is large. There is a problem of poor robustness when changing. Especially at low speeds, PI control often cannot quickly follow the given value of speed, resulting in torque error and speed error, and it does not have the function of online parameter self-tuning, therefore, PI control cannot accurately meet the requirements in different conditions. Under working conditions, the system requires self-tuning of parameters, thus ...

Claims

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Application Information

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IPC IPC(8): G05B23/02
CPCG05B23/0278
Inventor 杨淑芬
Owner 杨淑芬
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