Speed control of DC motor based on wireless networked control system with time delay and saturation parameters

Abstract

Abstract The integration of a wireless network in a closed-loop control system can provide several benefits such as flexibility, installation, and maintenance. However, the presence of time delay in the network system can reduce the control performance. On the other hand, control signal saturation is also the problem that must be overcome in designing a controller. This study aims to design a DC motor speed control by integrating wireless network in its closed-loop system. This concept is known as the Wireless Networked Control System (WNCS). The network parameter used in this study is focused on the time delay. In the controller side, we use a saturation parameter which usually occurs due to limitations of the input signal. The PI-AW controller is used due to having the ability to overcome the saturation of the control signal. The simulation results show that the PI-AW controller can produce the best responses if compared with PI linear and PI saturated with settling time under 1.5 seconds and overshoot less than 8% for three constant values of time delay. The control signal generated also does not exceed the maximum limit of 12 V.