Enhanced Optimal Symbolic Controller Synthesis: Application to a Boiler System

IF 4.9 2区计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS

IEEE Transactions on Control Systems Technology Pub Date : 2024-03-15 DOI:10.1109/TCST.2024.3396731

Alireza Najafiyanfar;Babak Tavassoli

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引用次数: 0

Abstract

Reliable and provably correct performance of control systems in the presence of various types of uncertainties and disturbances are essential objectives that require high integrity of the whole control system. Symbolic control is a candidate method for achieving these objectives which is capable of addressing both robustness and optimality of controller. However, several challenges may arise when the symbolic control method is applied in practice. These include the load of design computations, high memory requirements for design and implementation, and oscillations caused by discretization of inputs. The focus of this work is on treatment of the mentioned challenges during symbolic control synthesis for a boiler system as the central safety critical element in a broad range of industries. To reduce the load of design computations and the required memory while preserving the control precision, a two-stage control scheme is used in which symbolic models with different resolutions are employed. The input oscillations are also reduced by minimizing the changes in the input at the steady state. The performance of the synthesized controllers for several different designs are evaluated and compared during a simulation study. The results demonstrate the suitable performance of the symbolic control method when applied to a boiler system.

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增强型优化符号控制器合成：应用于锅炉系统

控制系统在存在各种不确定性和干扰的情况下，其可靠和可证明正确的性能是要求整个控制系统具有高度完整性的基本目标。符号控制是实现这些目标的一种候选方法，它能够同时解决控制器的鲁棒性和最优性问题。然而，符号控制法在实际应用中可能会遇到一些挑战。这些挑战包括设计计算的负荷、设计和实施的高内存要求以及输入离散化引起的振荡。锅炉系统是各行各业的核心安全要素，本工作的重点是在符号控制合成过程中如何应对上述挑战。为了在保持控制精度的同时减少设计计算量和所需内存，我们采用了两阶段控制方案，其中使用了不同分辨率的符号模型。此外，还通过尽量减少稳态时的输入变化来减少输入振荡。在模拟研究中，对几种不同设计的合成控制器的性能进行了评估和比较。结果表明，符号控制方法在应用于锅炉系统时具有合适的性能。

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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来源期刊

IEEE Transactions on Control Systems Technology 工程技术-工程：电子与电气

CiteScore

10.70

自引率

2.10%

发文量

218

审稿时长

6.7 months

期刊介绍： The IEEE Transactions on Control Systems Technology publishes high quality technical papers on technological advances in control engineering. The word technology is from the Greek technologia. The modern meaning is a scientific method to achieve a practical purpose. Control Systems Technology includes all aspects of control engineering needed to implement practical control systems, from analysis and design, through simulation and hardware. A primary purpose of the IEEE Transactions on Control Systems Technology is to have an archival publication which will bridge the gap between theory and practice. Papers are published in the IEEE Transactions on Control System Technology which disclose significant new knowledge, exploratory developments, or practical applications in all aspects of technology needed to implement control systems, from analysis and design through simulation, and hardware.