Feedback Gain Scheduling Controller Design for Networked Control Systems with Accurate Measurement of QoS

The networked control system was modeled in this paper. According to the actual network conditions, the networked-induced time delay is always varying in a certain range. So, the networked-induced time delay can be divided into the fixed time delay and the random time delay. The long time delay can be taken as packet dropout. What’s more, the drive mode, packets disorder, sampling period, and some assumed conditions were considered carefully in this paper. In order to make the research close to the reality, the round-trip delay of the network between Tsinghua University and Yahoo is measured by sending and receiving data packet every 5 s from Tsinghua side. Simulation showed that the modeling method improved the effectiveness of the system.