Dynamic Network Access Scheduling and Stabilization of TPCS Networked Control System

Abstract

The Networked Control Systems (NCS) is a significant arena in the current complex technical scenario. NCS provides the user a wide range of scope in mitigation of its underlying issues in order to benefit the versatility of the network. Two Inverted Pendulums Coupled by a Spring (TPCS) system is one of the finest platforms to study NCS and its issues. The objective considered here is to stabilize both the pendulums at desired vertical position while the “Medium Access Constraint” of NCS is addressed. The proposed Dynamic Medium Access Scheduling strategy aims at analyzing the issue so that it can be applied in practical scenarios. In this paper (i) TPCS is modelled as a switched system (ii) Dynamic Medium Access Scheduling protocols are discussed, selected and applied to TPCS and (iii) the best of the two: Weighted Fastest Decay and Guaranteed Dwell-Time methods to give a design solution is summarized. This is aided with computer simulations and the results show that the scheduling polices are effective in controlling TPCS-NCS.