Xiaomei Qi

Learn More
Fault detection problem of networked control systems with network-induced delay, data packets dropout and disturbance in sensor-to-controller link is discussed. First, we design an observer-based residual generator, and model the residual dynamics to be a discrete-time markovian jump linear system in this paper. By using H<inf>&#x221E;</inf> optimization(More)
Robust fault detection for a networked control system (NCS) including model uncertainty and stochastic data packet dropout is investigated, the NCS model with stochastic variable is established. Based on the observer method, a robust fault detection filter can generate a residual signal, which has good robustness to the model uncertainty, external(More)
The phenomenon of low efficiency and waste is prevalent in public buildings. One of the reasons is the bad habit of people. There is no way to judge the level of waste ever since a long time ago. In order to analyze the level of building energy utilization to implement low energy building, this paper presents a concept of energy efficiency. It divides the(More)
In buildings, a serious waste of energy exists in HVAC, and refrigeration stations account for the most of energy consumption. Because the coupling exists between devices of refrigeration stations, the traditional evaluating indicator based on independent device can not reflect the energy consumption characteristics and the optimal energy consumption of(More)
A robust fault detection filter (RFDF) design problem for networked control system (NCS) is investigated in this note. Network-induced uncertainties including time-varying unknown network-induced delay and data packet dropout are assumed to be existing in both sensor-to-controller link and controller-to-actuator link, where the total network-induced delay(More)
  • 1