Control Method for Sampled-Data Systems with Multiple Channels Based on Deadband-Triggered Scheme

Abstract

A new deadband-triggered scheme is proposed to investigate the control problems for sampled-data systems with multiple transmitting channels. Sampled-data systems simultaneously contain continuous-time and discrete-time signals, which make the systems hybrid. In the sampled-data systems with multiple channels, the every state signals are transmitting at different channels. The deadband communication constraint is adopted to reduce the usage of communication resources. When the difference between the previous value and the most present value is lager than a given threshold of deadband, then the node of channels transmits the most present value. Furthermore, by use of Lyapunov functional method and input delay approach, the new stability analysis and stabilization conditions for the sampled-data with multiple channels on the basis of deadband-triggered scheme are proposed. Numerical simulations and experiments show the validity and usefulness of the derived conditions. The proposed deadbandtriggered scheme is beneficial to further reduce the load of the communication data.

Deadband feedback-based scheduling approach for networked control system with variable sampling period

“…However, the standard deadband feedback scheduling has some shortcomings, such as weak regulation ability and inability to adapt to the dynamic changes of the network. In the results of Liu and Chu (2018), there is no interference node in the simulation system, which is different from the actual network. The threshold of deadband and its related parameters are fixed, and the influence of these parameters on system performance is not analysed and discussed.…”

“…Deadband feedback is one of the real-time dynamic scheduling algorithms. In the study by Liu and Chu (2018), the every state signals are transmitting at different channels in the sampled-data systems with multiple channels. The deadband communication constraint is adopted to reduce the usage of communication resources.…”