二次调节节能系统智能PID控制及仿真研究

Intellectual control on hydrostatic transmission systems with secondary regulation and its computer-simulated study

提出了一种基于遗传算法整定的PID控制方法,将其应用到二次调节节能系统中,以提高系统的控制性能.根据二次调节节能系统得出转速控制系统方块图,建立转速控制系统的数学模型,并在允许的情况下将其简化,对该闭环控制系统采用基于遗传算法整定的PID控制方法进行数字计算机仿真研究.结果表明:此算法在给定PID控制参数范围的情况下,能自动寻找到全局最优点.

A genetic algorithm is presented to raise the dynamic characteristics of the hydrostatic transmission system with secondary regulation.The block diagram of a speed system is drawn according to hydrostatic transmission system with secondary regulation.A mathematic model is established and simplified according to the practical conditions.The use of intellectual PID control system with genetic algorithms in closed-loop speed control system is studied and computer-simulated.The result shows that the genetic algorithm PID control system has better control performance than the traditional PID control system,which searches the best parameters of PID control system automatically.