【作者】 太军君；

【导师】 刘长青； 杨晓红；

【作者基本信息】 华北电力大学（河北） ， 机械设计及理论， 2004， 硕士

【摘要】 水轮机调速器是水电站实现自动化控制的主要设备。电液随动系统是调速器的关键部分,它的结构及其控制方式的合理与否直接影响着电站的经济效益,关系着电站设备的运行安全。本文根据大中型水电站的实际需要,自行研制了一个全数字电液随动系统,建立了整个系统的数学模型,用MATLAB的仿真工具箱和模糊逻辑工具箱对系统进行了控制和仿真。通过对几种控制方法的仿真结果比较,得到比较理想的控制方法——模糊自调整PID控制。试验证明,本电液随动系统具有系统稳定、运行可靠、抗干扰能力强、成本低、结构简单、驱动力矩小的优点,适用于高压大流量的场合。因此,具有广阔的应用前景。更多还原

【Abstract】 Hydroturbine governor is a main equipment to realize the automation in the hydropower station. The electrohydraulic servo system is a key part of hydroturbine governor. Whether it’s configuration and control means is reasonable or not directly affects economical benefit and the safety of the equipment of the hydropower station. In this paper, a digital electrohydraulic servo system is built base on actual requirement of some medium and large hydropower stations. Then the mathematical model is built. And then the system is controlled and simulated by the Simulink toolbox and Fuzzy Logic toolbox of MATLAB. The better means, self-adjusting PID factor fuzzy controller of this system is found by comparing the simulative results of several controllers each other. It is proved by the simulation testing and analysis that the system has many advantages such as steady, high reliability, the strong anti-jamming capability, low cost, simple structure, and small driving force moment and so on, and can be used in the system with high pressure and big flow. It will be widely used in the hydropower stations.更多还原