蒸汽压缩系统中制冷剂动力学多变量控制的面向控制建模

2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT) Pub Date : 2023-05-26 DOI:10.1109/ICMIMT59138.2023.10200756

C. Sanama, X. Xia

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引用次数: 0

摘要

在VC系统上开发了一种多变量MPC，用于同时控制过热度和蒸发器压力。实现了一个具有12个状态变量和2个输入的非线性面向控制模型。非线性模型在一个精心选择的稳态点周围线性化，以便MPC可以根据测量的过热和蒸发器压力反馈计算最佳膨胀阀开度和压缩机转速。面向控制的模型和MPC在Simulink上由VC系统、MPC系统、参考系统和环境4个相互连接的子系统实现。考虑了过热度与蒸发器压力之间的耦合效应。在考虑过热度和蒸发器压力耦合效应的情况下，MPC在抗干扰和参考跟踪方面的性能令人满意。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Control-oriented Modelling for Multivariable Control of Refrigerant Dynamics in Vapor Compression Systems

A multivariable MPC is developed on a VC system to control simultaneously the superheat and evaporator pressure. A nonlinear control-oriented model is implemented with 12 state variables and 2 inputs. The nonlinear model is linearized around a carefully selected steady state point so that MPC could be implemented to compute optimal expansion valve opening and compressor speed with measured feedbacks of superheat and evaporator pressure. The control-oriented model and MPC are implemented on Simulink using 4 interconnected subsystems namely, the VC system, the MPC system, the reference system and the environment. The coupling effects between superheat and evaporator pressure are considered. MPC performance was satisfactory in terms of disturbance rejection and reference tracking whilst considering the coupling effects between superheat and evaporator pressure.

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来源期刊

2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)

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