Title: A FOPID based decentralised control system for vibration control of railway vehicle using hybrid optimisation

Authors: Nitish; Amit Kumar Singh

Addresses: Department of Instrumentation and Control Engineering, Dr. B. R. Ambedkar National Institute of Technology, Jalandhar, Punjab, 144008, India ' Department of Instrumentation and Control Engineering, Dr. B. R. Ambedkar National Institute of Technology, Jalandhar, Punjab, 144008, India

Abstract: This paper proposes a 17-degree-of-freedom dynamic railway vehicle model integrated with wheel-rail forces and active suspensions. The passive response of the model is validated with the experimental results. Afterward, a decentralised control structure having fractional order proportional integral derivative (FOPID) controller has been formulated to mitigate the track disturbances. A novel metaheuristic optimisation technique named hybrid PSO-GWO has been proposed to provide the optimum force. The performance of FOPID controllers was evaluated in the time and frequency domain under the periodic and random track disturbances, and the results were compared against the passive system and classical tuning method. From the results, it is seen that hybrid PSO-GWO is more capable of reducing the vehicle accelerations as compared to other tuning methods as it can be able to reduce the lateral, roll, and yaw acceleration up to 77.81%, 75.29% and 63.74% under periodic and, 57.22%, 77.88%, and 69.58%, under random excitations.

Keywords: active suspension; decentralised control; FOPID controller; metaheuristic algorithms; power spectral density; ride comfort.

DOI: 10.1504/IJHVS.2024.136244

International Journal of Heavy Vehicle Systems, 2024 Vol.31 No.1, pp.113 - 146

Received: 10 Jan 2023
Accepted: 08 May 2023
Published online: 24 Jan 2024 *