论文部分内容阅读
对于具有多变量强耦合特点的工业过程对象,控制系统的稳定性是非常重要的。这要求减少控制作用和降低控制强度。但对于控制输出偏离控制目标,尤其控制输出偏向非常不希望的方向时,需要较强的控制作用使输出快速返回目标值, 这样就存在怎样协调控制的快速性和稳定性之间的矛盾。本文针对这一问题,提出了以MPC(model predictive control)理论为基础的单边区间控制算法。通过权重区分输出偏离目标值的方向,对不同的偏离方向采取不同的控制强度,在保证快速控制的前提下最大限度满足稳定控制的要求。本文还对算法的求解进行了讨论,并通过实例仿真说明了新算法能够实现单边区间控制。
For industrial process objects with multivariable strong coupling characteristics, it is very important to control the stability of the system. This requires less control and less control. However, when the control output deviates from the control target, especially when the control output is biased in a very undesirable direction, a strong control effect is required to quickly return the output to the target value. Therefore, there is a conflict between rapidity and stability of the coordinated control. In response to this problem, this paper proposes a single-side interval control algorithm based on MPC (model predictive control) theory. The weights are used to distinguish the direction of the output from the target value and take different control intensities for different deviation directions so as to satisfy the requirements of stable control to the maximum under the premise of ensuring fast control. In this paper, the algorithm is also discussed, and the simulation results show that the new algorithm can achieve unilateral control.