Institute of Mechatronics and Computer Engineering, Faculty of Mechatronics, Informatics and Interdisciplinary Studies, Technical University of Liberec, 461 17 Liberec, Czech Republic.
Sensors (Basel). 2022 Apr 7;22(8):2847. doi: 10.3390/s22082847.
Industrial process tomography offers two key advantages over conventional sensing systems. Firstly, process tomography systems provide information about 2D or 3D distributions of the variables of interest. Secondly, tomography looks inside the processes without penetrating them physically, i.e., sensing is possible despite harsh process conditions, and the operation of the process is not disturbed by intrusive sensors. These advantages open new perspectives for the field of process control, and the potential of closed-loop control applications is one of the main driving forces behind the development of industrial tomography. Despite these advantages and decades of development, closed-loop control applications of tomography are still not really common. This article provides an overview of the current state-of-the-art in the field of control systems with tomographic sensors. An attempt is made to classify the different control approaches, critically assess their strengths and weak points, and outline which directions may lead to increased future utilization of industrial tomography in the closed-loop feedback control.
工业过程层析成像相对于传统传感系统具有两个关键优势。首先，过程层析成像系统提供感兴趣变量的 2D 或 3D 分布信息。其次，层析成像无需穿透物体即可对其内部进行检测，也就是说，即使在恶劣的工艺条件下也可以进行检测，而且不会对工艺的运行造成干扰。这些优势为过程控制领域开辟了新的视角，而闭环控制应用的潜力是推动工业层析成像发展的主要动力之一。尽管具有这些优势且已经发展了数十年，但层析成像的闭环控制应用仍然并不常见。本文概述了具有层析成像传感器的控制系统的最新技术现状。本文尝试对不同的控制方法进行分类，批判性地评估它们的优缺点，并概述哪些方向可能会增加工业层析成像在闭环反馈控制中的未来应用。
