Set-Based State Estimation in Quantized State Feedback Control Systems With Quantized Measurements

Recently, with rapid advancements in communication technologies, networked control systems (NCSs) have attracted significant attention. In an NCS, data to be transmitted are quantized to match the communication channel capacity. When only the quantized state is available as the feedback signal in an NCS and the actual state is unavailable, the control performance may be degraded because of the intrinsic quantization error of the quantized state. Therefore, a state estimator has to be designed to avoid the performance degradation. In this brief, we propose a synthesis for set-based state estimation in a discrete-time quantized feedback control system in which only the quantized measurement is available. The effectiveness of the proposed estimation approach is verified via both simulations and experiments.