Nonlinear control of a fluidized bed reactor using approximate feedback linearization
Nonlinear control of a fluidized bed reactor using approximate feedback linearization
复制标题
使用近似反馈线性化对流化床反应器进行非线性控制
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
F. Doyle
中科院分区：
文献类型：
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作者：
T. A. Kendi;F. Doyle
将两种近似反馈线性化方法应用于沸腾床反应器的非线性控制。第一种方法，三阶近似输入−状态线性化，在工作点附近的狭窄区域内改善了设定值跟踪的性能。在分析近似输入−状态线性化假设的基础上，提出了一种近似输入−输出线性化方案。基于该方法的流态化反应器控制方案的实施，在反应器内30°C的温度范围内实现了良好的设定点跟踪。讨论了非线性模型的选择问题和计算问题。最后，实现了一种新的基于内模控制的非线性抗终结控制方案，以确保在不违反硬执行器约束的情况下获得改善的性能。
Two approaches to approximate feedback linearization are applied to the nonlinear control of a fluidized bed reactor. The first approach, third order approximate input−state linearization, results in improved performance for setpoint tracking over a narrow region around the operating point. On the basis of an analysis of the assumptions of approximate input−state linearization, an approximate input−output linearization scheme is proposed. Implementation of a control scheme for the fluidized bed reactor based upon this approach resulted in excellent setpoint tracking over a 30 °C temperature range in the reactor. The issues of nonlinear model selection and computational issues are discussed. Finally, a novel internal model control based nonlinear anti-windup scheme is implemented to ensure that improved performance is obtained without violating hard actuator constraints.