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本文介绍了一种建模简单、控制鲁棒性强、便于处理工程实际中各种约束条件的新型计算机控制算法一预测控制。并针对多水轮机系统描述了建立其阶跃响应模型的方法,推导了相应的动态矩阵控制算法,并以有水力联系的两台水轮机系统为例应用预测控制进行了仿真计算。结果表明:采用预测控制时系统基本无反调,水压发动小,且对象参数变化时动态特性变化不大,仍能达到系统的稳定性。这一点是PID最优状态调节器所不具有的。本文将多变量系统的预测控制引入多水轮机系统的频率调节,从仿真结果看来,效果是良好的。
This paper introduces a new type of computer control algorithm-predictive control that is simple to model, robust to control and easy to handle various constraints in engineering practice. The method of establishing the step response model for multi-turbine system is described. The corresponding dynamic matrix control algorithm is deduced. The simulation calculation is carried out by using two hydraulic turbine systems with hydraulic control as an example. The results show that when the predictive control is adopted, the system has basically no anti-tune, the hydrodynamic launch is small, and the dynamic characteristics change little when the object parameters are changed, so the stability of the system can still be achieved. This is what the PID Optimal Conditioner does not have. In this paper, the predictive control of multivariable systems is introduced into the frequency regulation of multi-turbine system. From the simulation results, the result is good.