Iranian Journal of Mechanical Engineering Transactions of ISME

Iranian Journal of Mechanical Engineering Transactions of ISME

Event-triggered robust control of active car suspension systems with parametric uncertainty and physical constraints

Authors
Seyed Erfan Razavi zadeh
Ali Kazemy
Department of Electrical Engineering, Tafresh University, Tafresh
10.30506/ijmep.2020.103903.1539
Abstract
In this paper, the problem of event-triggered robust control of half-car suspension system with parametric uncertainty is investigated. Some physical hard constraints for the system are also considered in the control design procedure. Firstly, the problem is formulated by presenting the dynamic equation of the half-car suspension system and the event-triggered mechanism for sending the sensor measured data to the controller. The parametric uncertainties are also considered in this stage. The event-triggered mechanism decreases the number of sending information from the sensors into the controller which yields a larger bandwidth of the communication network. Then, with help of the Lyapunov - Krasovskii theorem, some conditions are provided in the form of linear matrix inequalities to ensure the stability and performance of the suspension system. These linear matrix inequalities are easily solvable with standard routines. Finally, a numerical half-car suspension system is presented to show the effectiveness of the proposed method.
Keywords
Active car suspension system
Event-triggered control
H∞ performance index
Lyapunov-Krasovskii theorem

Subjects

 
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  • Receive Date 13 February 2019
  • Revise Date 07 May 2020
  • Accept Date 24 October 2020