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Method of control performance and network QoS co-design of networked control systems

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4 Author(s)
Yun Niu ; Sch. of Marine Eng., Northwestern Polytech. Univ., Xi''an, China ; Xuguang Wu ; Jun Kang ; Junhong He

In this paper, the continuous-time control model is transferred to a digital form based on network QoS, such as network-induced delay and packet dropout, first, and then, the stability of the control system under the nonideal condition is discussed based on linear matrix inequalities (LMIs). Farther more the discrete-time quadratic performance index is revised to take network-induced delay into account. Base on the results above, a discrete Linear quadratic regulator (LQR) is designed and network QoS constraints is proposed to guarantee the performance of the control system. To satisfy the QoS constraints, a co-design method of control and scheduling is proposed to guarantee both networked control performance and network QoS. Finally, a series of experiments based on Truetime is present, and the results show that the scheme is effective and necessary.

Published in:

Control and Decision Conference (CCDC), 2010 Chinese

Date of Conference:

26-28 May 2010