Performance assessment of cascade control loops
Performance assessment of cascade control loops
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DOI：
10.1002/aic.690460208
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发表时间：
2000-02
期刊：
影响因子：
3.7
通讯作者：
B. Ko;T. Edgar
中科院分区：
文献类型：
--
作者：
B. Ko;T. Edgar
针对两种情况推导了串级控制系统的最小方差控制律：主过程具有稳定和不稳定的逆。在最小方差串级控制下，主输出变量的表达式被证明是反馈不变的。通过对正常运行下采集的主、副测量值进行多元时间序列建模，可以获得串级控制回路中可达到的最小方差的估计值。利用模拟数据和工业数据证明了所提出的性能评估方法的实用性。
The minimum variance control law for a cascade control system is derived for two cases: the primary process has stable and unstable inverses. The expression for the primary output variable under the minimum variance cascade control is shown to be feedback-invariant. An estimate of the minimum achievable variance in a cascade control loop can be obtained via multivariate time-series modeling of the primary and secondary measurements collected under normal operation. The utility of the proposed performance assessment method is demonstrated using simulated and industrial data.