论文部分内容阅读
水轮机调节系统中采用模糊控制时,应考虑编制模糊控制表中的非线性特性对系统动态响应的影响。文章在快速富里哀变换(FFT)的基础上,应用描述函数法对此问题进行了研究,指出了系统出现持续振荡(极限环)的可能性。文中理论分析和仿真计算结果表明这种分析方法是可行的。
When adopting the fuzzy control in the turbine governing system, the influence of the nonlinear characteristics of the fuzzy control table on the dynamic response of the system should be considered. On the basis of Fast Fourier Transform (FFT), this paper studies the problem by using the description function method and points out the possibility of continuous oscillation (limit cycle) in the system. The theoretical analysis and simulation results show that this method is feasible.