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Algebraic robust control of a closed circuit heating-cooling system with a heat exchanger and internal loop delays

机译：具有热交换器和内部回路延迟的闭路加热 - 冷却系统的代数鲁棒控制

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This study demonstrates the use of a simple algebraic controller design for a cooling-heating plant with a through-flow air-water heat exchanger that evinces long internal delays with respect to the robustness to plant model uncertainties and variable ambient temperature conditions during the season. The advantage of the proposed design method consists in that the delays are not approximated but fully considered. Moreover, the reduction of sensitivity to model parameters’ variations yields the better applicability regardless modeling errors or environmental fluctuations. The infinite-dimensional mathematical model of the plant has been obtained by using anisochronic modeling principles. The key tool for the design is the ring special of quasipolynomial meromorphic functions (RQM). The Two-Feedback-Controllers (TFC) rather than the simple negative control feedback loop is utilized, which enables to solve the reference tracking and disturbance rejection independently and more efficiently. The eventual controller is then tuned such that robust stability and robust performance requirements are fulfilled. The tuning procedure is supported by a performance optimization idea. Since the originally obtained controller is of the infinite-dimensional nature, a possible way how to substitute it by a simplified finite-dimensional one is proposed for engineering practice. The functionality of both the controllers is compared and verified by simulations as well as by real measurements which prove a very good performance. © 2016 Elsevier Ltd
机译：该研究表明，使用简单的代数控制器设计用于冷却加热设备，其具有通流的空气热交换器，其在季节期间对植物模型不确定性和可变环境温度条件的稳健性提升了长的内部延迟。所提出的设计方法的优点在于，延迟不近似但完全考虑。此外，对模型参数变化的灵敏度的降低产生了更好的适用性，无论误差还是环境波动。通过使用AITOCHRONIC建模原理获得了工厂的无限尺寸数学模型。设计的关键工具是Quasi oneMomial纯函数（RQM）的戒指。使用两种反馈控制器（TFC）而不是简单的负控制反馈回路，这使得能够独立地和更有效地解决参考跟踪和干扰抑制。然后调整最终控制器，使得满足了稳健的稳定性和鲁棒性能要求。演奏过程支持调整过程。由于最初所获得的控制器是无限的大自然，因此提出了如何通过简化的有限维代替其进行工程实践。通过模拟比较和验证控制器的功能，以及通过实际测量来验证，这证明了非常好的性能。 ©2016 Elsevier Ltd

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    Libor Pekař; Roman Prokop;

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