自适应模糊PID控制器在可调式射流泵供水系统中的应用

Adaptive fuzzy PID controller's application to technical water supply system based on adjustable jet pump

在高水头电站中,为满足技术供水水压的要求,经常采取多种减压措施,而利用可调式射流泵进行减压的技术供水系统,在国内还较为少见.结合越南儒桂水电站,采用可调式射流泵技术供水方式,介绍了其技术供水自动控制系统的构成.针对恒压供水系统具有多参数、非线性、大时滞的特点,设计了一种自适应模糊PID控制器.该控制器能够对供水系统中的水压调节进行有效控制.控制系统采用自适应模糊PID控制器后,控制系统的响应速度加快,超调量减小,过渡过程时间大大缩短,振荡次数少,具有较强的鲁棒性和良好的稳定性.实际运行结果验证了所提出方法的有效性和可行性.

Various methods are adopted to reduce water pressure to satisfy the requirement of technical water supply in high head hydropower station.However,the technical water supply system adopting adjustable jet pump is rare in China.According to Vietnam RuGui power station,this paper introduces the composition and the concrete realization of the adjustable jet pump automatic control system.An adaptive fuzzy-PID controller is designed to against the characteristics of this system like multi-parameters,nonlinear,big delay,etc.The controller can effectively adjust the water pressure of the system.The System has strong robustness and good stability by applying the fuzzy controller.The practical operation result has verified the validity and feasibility of the methods proposed.