Method of control performance and network QoS co-design of networked control systems
2010
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.
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