摘要
该文首先利用计算机仿真软件中的优化工具箱对常规PID控制器中的比例、积分和微分参数进行优化,并且针对中央空调温度控制系统非线性、大滞后的特点,设计了在规则上可调整的模糊控制器,该模糊控制器通过α因子自调整和Ku的自寻优,达到适应和跟踪系统参数变化的目的;而后采用模糊逻辑工具箱和MATLAB函数相结合,方便地实现空调温度控制系统的计算机仿真。仿真结果表明,这种控制方式控制效果优于常规PID控制,有效地改善了系统的动态性能、稳态精度和鲁棒性。
A design method about fuzzy PID is presented for optimizing parameters using Nonlinear Control Design Blockset based on MATLAB, and fuzzy logical toolbox and MATLAB function are used together to implement the computer simulation of the Central Air -conditioning System. To deal with the non -linearity, a method for optimizing the weighting factor α and the output scaling gain K. is adopted in the applied ruled - adjustable fuzzy controller. The simulation result shows that this method improves the performance of the control system. Furthermore the control system which uses the fuzzy PID controller has better performance than the traditional PID control.
出处
《计算机仿真》
CSCD
2006年第11期311-313,339,共4页
Computer Simulation
关键词
中央空调
模糊控制器
模糊逻辑工具箱
计算机仿真
Air- conditioning central control
Fuzzy controller
Fuzzy logical toolbox
Computer simulation
