Vibration Control of an Active Seat Suspension System Integrated Pregnant Woman Body Model 2019-01-0172

Nowadays, proportional-integral-derivative (PID) controller is the most popular controller which is widely applied in engineering systems and has been accepted in industry field. In this paper, PID tuned using genetic algorithm (GA PID) and Fuzzy Self Tuning PID (FSTPID) controllers are applied to improve the performance of the active seat suspension system to enhance the pregnant woman comfort. A mathematical model of thirteen degrees–of– freedom (13DOF) seat suspension system incorporating pregnant woman body and an active seat suspension model is derived and simulated. The controller is designed based on the mathematical model of the system which is estimated by using system identification technique. Fuzzy logic is applied to tune all parameters of PID controller (〖 K〗_p, K_iand〖 K〗_d) by selecting fitted fuzzy rules using Matlab/Simulink software. The proposed active seat suspension is compared with the passive seat suspension systems. Suspension performance is evaluated under bump and random road excitations in time domain in order to verify the success of the proposed control techniques. The simulated results reveal that the proposed controllers using GA PID and FSTPID grant a significant enhancement of the pregnant woman comfort and her fetus.