Input saturation effects in optimizing control - inclusion within a simultaneous optimization framework
Input saturation effects in optimizing control - inclusion within a simultaneous optimization framework
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优化控制中的输入饱和效应 - 包含在同步优化框架内
DOI：
10.1016/j.compchemeng.2003.09.034
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
C. Swartz
中科院分区：
文献类型：
--
作者：
J. Young;R. Baker;C. Swartz
优化控制涉及到不断调整工厂的工作点，以符合经济最佳，受现行的约束。虽然经济最优通常位于过程约束的交叉点，但实际上操作点需要位于可行区域内的适当距离处，以确保在面对不可测量干扰时的可行性。本文通过考虑闭环动态特性来计算最优设定点，特别关注输入饱和效应的严格处理。两种替代配方，它表明，未能考虑到输入饱和度可能会导致过于保守的设定点。该方法通过两个案例研究，其中之一是流化催化裂化装置（FCCU）的例子问题。
Optimizing control involves the continual adjustment of the plant operating point to coincide with the economic optimum, subject to prevailing constraints. While the economic optimum generally lies at the intersection of process constraints, the operating point would in practice need to be located a suitable distance into the feasible region to ensure feasibility in the face of unmeasured disturbances. This paper addresses the calculation of the optimal set points by considering the closed-loop dynamics, focusing in particular on rigorous handling of input saturation effects. Two alternative formulations are presented, and it is shown that failure to account for input saturation could result in overly conservative set points. The approach is demonstrated through two case studies, one of which is a fluid catalytic cracking unit (FCCU) example problem.