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基于区间特性和变量软约束的模型预测控制算法

DOI: 10.13195/j.kzyjc.2014.1274, PP. 1879-1884

Keywords: 模型预测控制,区间跟踪,稳态轨迹,软约束

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Abstract:

针对传统的区间模型预测控制算法的性能指标函数设计复杂,以及被控变量进入区间后稳态轨迹变化幅度大的缺点,提出一种区间特性和变量软约束的模型预测控制算法.该算法仅利用期望输出区间的上下限,通过预测输出与区间的等式关系构造区间跟踪偏差项,同时利用预测输出和操作变量的增量二次型构造变量软约束项,减小区间内的稳态轨迹的变化幅度,上述两项合称为软约束区间跟踪性能指标项.以回转窑模型为被控对象进行仿真,表明了算法的有效性.

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