Chaotic control method and system for nonlinear hydraulic mechanical coupling hydropower station speed regulation system

A technology of hydraulic machinery and speed control system, applied in the direction of electric speed/acceleration control, etc., can solve the problems of adjusting chaos without in-depth research, achieve the elimination of chaos, improve the quality of adjustment and response speed, and improve control The effect of accuracy

Inactive Publication Date: 2021-10-08
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

For the speed control system of hydropower station with nonlinear hydraulic-mechanical coupling, there is no in-depth research to adjust its chaotic phenomenon

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  • Chaotic control method and system for nonlinear hydraulic mechanical coupling hydropower station speed regulation system
  • Chaotic control method and system for nonlinear hydraulic mechanical coupling hydropower station speed regulation system
  • Chaotic control method and system for nonlinear hydraulic mechanical coupling hydropower station speed regulation system

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[0053] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0054] In the present invention, the terms "first", "second" and the like (if any) in the present invention and drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0055] figure 1 It is a flow chart of the chaos control method for the speed regulation system of the nonlinear hydromechanical coupling hydropower station provid...

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Abstract

The invention discloses a chaotic control method and system for a nonlinear hydraulic mechanical coupling hydropower station speed regulation system, and belongs to the field of hydropower station speed regulation system control. The method comprises the steps of building an operation model of the nonlinear hydraulic mechanical coupling hydropower station speed regulation system, and converting the operation model into a high-order state equation form so as to obtain a state equation of the speed regulation system; introducing a sliding-mode control guide signal into the state equation based on a sliding-mode control theory, and designing a proportional-integral sliding-mode surface according to a tracking error control target of the state parameters represented by the state equation; and deducing a specific expression of the sliding mode control guide signal according to a sliding mode control constraint condition met by the proportional integral sliding mode surface, and inputting a signal represented by the specific expression into the speed regulation system to perform chaos control. According to the present invention, the dynamic characteristics of the hydropower station speed regulation system are considered, a chaos phenomenon is eliminated, the hydropower station speed regulation system rapidly enters a stable state and finally achieves system balance, and meanwhile the regulation quality and the response speed of the hydropower station speed regulation system can be improved.

Description

technical field [0001] The invention belongs to the control field of the speed regulation system of a hydropower station, and more specifically relates to a method and system for controlling the chaos of the speed regulation system of a nonlinear hydraulic mechanical coupling hydropower station. Background technique [0002] The dynamic performance of the speed regulation system of a hydropower station is affected by the control system. The governor is the core component of the control system. According to the control method of the governor, the speed regulation system of the hydropower station operates under specific requirements. At present, the most widely used is the proportional integral differential (Proportion Integral Differential, PID) control method. However, the PID control method is a linear control method, and the effect of the PID control method is not satisfactory for the speed regulation system of a nonlinear hydropower station. The nonlinear characteristic...

Claims

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Application Information

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IPC IPC(8): G05D13/62
CPCG05D13/62
Inventor 郭文成曹锐徐新宇吴福林瞿方乐刘杨
Owner HUAZHONG UNIV OF SCI & TECH
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