Enhanced Control of Assured Crew Re-entry Vehicle using Novel Controller Design: A Comparative Study

Abstract

This paper proposes a Simulated Annealing (SA) optimized sliding mode (SM) controller designed with Proportional Integral Derivative (PID) controller for an Assured Crew Re-entry Vehicle (ACRV) with a reduced lift to drag ratio of 0.3. The system state will approach a mentioned altitude and the controller signal will match an exact equivalent control. A trajectory controller directs ACRV alongside a determined course while controlling the reference altitude. The trajectory controller and navigation system generate the altitude controller's reference vectors. This paper provides an unique SM control with PID tuning approach. The goal is to make the system resistant to parametric changes as well as external disruptions. Because of its robustness to disturbances, the SM control strategy is strongly recommended. PID control gain parameters are optimized and can be calculated in a systematic manner. The SA based sliding mode controller designed with optimized PID (SA PID-SM) controller uses a SM switching function to tackle the system uncertainty and accuracy. Environmental instabilities and various structural parametric disturbances are considered when building the feedback controller. Using various thrust torque patterns, the system's sensitivity is evaluated. A Pulse-Width-Pulse-Frequency (PWPF) modulator modulates the thrust torque directed by the altitude controller. The results of simulation reveal that the suggested approach effectively meets the different requirement criteria.