Robust stability analysis of single pendulum networked control system

In single pendulum networked control system network delays induced by communication network can deteriorate control performance; even cause the instability of single pendulum system. The stability region of single pendulum networked control system is analyzed via dual-locus diagram. The region is divided into the unstable region and the stable region. There into the stable region also includes delay-independent stable region and delay-dependent stable region. A suitable controller for single pendulum networked control system can be designed based on these regions. The results prove that via dual-locus the robust stability analysis of time-delay single pendulum networked control system is valid.