Vibration Reduction of Tracked Vehicle-Seat-Occupant System Based on Two-Stage Magnetorheological Suspension

The purpose of this work is to verify the superiority of the two-stage magnetorheological (MR) suspension in improving the occupant comfort of tracked armored vehicles. A vibration reduction scheme for the two-stage MR suspension is proposed, which consists of the MR vehicle suspension and MR seat suspension. This two-stage MR suspension design achieves outstanding vibration reduction performance on tracked vehicles, significantly reducing the dynamic responses of vehicle occupants. The dynamic model of the tracked vehicle-seat-occupant system is established based on the transfer matrix method for multibody systems (MSTMM), and through dynamic simulations combined with the Skyhook control strategy, the superior performance of the two-stage MR suspension is demonstrated. Compared to passive suspension system, the two-stage MR suspension exhibits a performance improvement of over 40%, effectively proving its superiority in vibration reduction for tracked vehicles.