Dynamic PIDPlus Controller for Wireless Closed Loop Control of Lag and Dead Time Dominant Slower Processes

The wireless process control applications demand high network reliability, low latency, greater energy savings, and secure communication as well as optimal and robust control performance with utmost safety. To address these challenges, the co-design of dynamic proportional-integral-derivative plus (DPIDPlus) controller over WirelessHART network is proposed in this paper for closed-loop control of lag and dead time dominant slower processes. The real-time experiments are conducted using Dust Networks’ SmartMesh WirelessHART sensors testbed to measure the network performance. The wireless control tests are carried out using modified TrueTime 2.0 co-simulator to evaluate the performance of proposed controller. The simulation results show that wireless DPIDPlus controller with dynamic P-gain provides 44.63 % improvement in set-point tracking performance and 5.44 % improvement in disturbance rejection performance as compared to wireless PIDPlus controller for delayed process measurement updates and communication loss intervals.