Integrated Controller Design Methods and Communication Services for Networked Control Systems (NCS)

网络控制系统对于实现所谓的网络物理系统（其中计算机控制物理过程）的重要性不断增加。这样的系统包括传感器、致动器和数字控制器，它们通常分布在广阔的区域上。因此，必须使用通信网络来传输测量和控制信号以闭合控制回路。本项目的基本目标是设计方法，弥合控制系统和通信系统之间的差距。特别是，这包括网络模型的设计，可以作为控制系统的基础，一方面提供有保证的控制质量。另一方面，这些网络模型应该允许在基于IP的通信基础设施中有效地实现。在第一个供资期内，设计了一个网络模型，区分用于保证稳定性的确定性（可靠）传输和用于优化控制质量的机会性（不可靠）传输。基于这一模型，第二个资助期的工作重点是实现以下目标：一方面，增加目标网络控制系统的复杂性，以覆盖更大的控制系统。例如，考虑非线性系统和由具有共享通信资源的多个控制应用的组组成的系统。另一方面，控制器复制的方法进行了研究，以增加网络控制系统的鲁棒性。

Networked Control Systems are constantly gaining importance for the implementation of so-called Cyber-Physical Systems, where computers control physical processes. Such systems comprise sensors, actuators, and digital controllers, which are often distributed over a wide area. Consequently, measurements and control signals have to be transferred using a communication network to close the control loop. The essential goal of this project is to design methods bridging the gap between control systems and communication systems. In particular, this includes the design of network models that can serve as basis for control systems providing a guaranteed quality of control on the one hand. On the other hand, these network models should allow for an efficient implementation in IP-based communication infrastructures. During the first funding period, a network model has been designed that distinguishes between deterministic (reliable) transmissions for guaranteeing stability, and opportunistic (unreliable) transmissions for optimizing quality of control. Based on this model, the work of the second funding period is focused on the following goals: On the one hand, the complexity of the targeted networked control systems is increased to cover a larger set of control systems. For instance, non-linear systems and systems consisting of groups with multiple control applications sharing communication resources are considered. On the other hand, methods for controller replication are investigated to increase the robustness of the networked control system.