Applications

Abstract

In previous chapters, NCS modelling and control have been presented using control, scheduling and codesign strategies, in order to reduce the effects of including a communication network within the control loop. This chapter shows several applications of the proposed design strategies for NCS. The first section shows the two case studies, one is a SISO MAGLEV system and MIMO 2-DOF helicopter system, both are used in different NCS configuration into the chapter to prove the effectiveness of proposed methods. Then, the design of an adaptive fuzzy control for NCS (Sect. 4.2) is shown for both the SISO and MIMO system through the fuzzy systems, realizing the model of the time delay, and designing the model and controller of the system with both time delays and lost packets, where the MIMO system shows the versatility of the design with multiple outputs and a fully distributed configuration. The third section presents the application of sampling frequency control (Sect. 4.3) to the SISO and MIMO systems, showing an excellent system performance by controlling the frequency of transmission of the agents. Finally, the controller-scheduling codesign of Sect. 4.4 is applied to the MIMO system using two fuzzy models, a control model allows to generate a control law for multiple sampling periods based on the quality of control while a scheduling model selects a sampling period, both in function of the network and system performance. Showing that the combined application of strategies improves the performance of the complete system.