Research on Vibration Control of Seating System Platform Based on the Cubic Stewart Parallel Mechanism

Abstract

A multi-degree-of-freedom seating system platform based on the cubic Stewart parallel mechanism is designed for vibration control of an off-road vehicle driver's seat. A parameter sensitivity analysis is conducted to identify the most sensitive parameters for the transmissibility ratio of the seating system platform. Then, a vibration control method combining active and passive control for each branch of the seat platform leg is developed to reduce the driver's body vibration. The results indicate that the seating system platform designed in this article can reduce the vibration in the vertical direction, horizontal direction and roll direction simultaneously through passive vibration control. The vibration can be further reduced in these three directions by adding active vibration control. INDEX TERMS Multi-degree-of-freedom vibration control, cubic Stewart parallel mechanism, sensitivity analysis, active vibration control.

Design and Implementation of a New Training Flight Simulator System

“…Since the movable plate of this mechanism is constrained in parallel and the length of six shafts, the movement of six degrees of freedom in space is limited. Since the change of the length of each axis is independently controlled within the range of the movement space of the mechanism, most of them are controlled by a SISO system, and the motors of the respective drive shafts are independently controlled by the rod length [ 12 ]. However, the overall motion space is limited and needs to be maintained in a co-planar plane at all times, so long-distance and large-angle motion cannot be provided by the control system.…”

“…In addition, some sensors were installed at the middle of platform to acquire motion status to track and monitor the performance evaluation. To the best of our knowledge, the ideas we mention have not been presented in previously published papers [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 ]. As a result, this paper presents some new ideas in terms of kinematics and a motion-cueing algorithm, the servo motion is executed by the programmable controller, and the commands are read and received through the Ether-CAT communication port to achieve synchronous simulation.…”

Optimized Fuzzy Skyhook Control for Semi-Active Vehicle Suspension with New Inverse Model of Magnetorheological Fluid Damper

“…We established a vibration model of the human body in the vertical direction to lay the foundation for the active control of vehicle seat vibration [17]. We also applied the fuzzy PID (proportional-integral-derivative) control method to the vibration reduction of the vehicle seat and carried out simulation analysis [18]. The results show that the active control method can clearly improve the vehicle ride comfort.…”