Performance Investigation of Integrated Model of Quarter Car Semi-Active Seat Suspension with Human Model

Abstract

In this paper, an integrated model of a semi-active seat suspension with a human model over a quarter is presented. The proposed eight-degrees of freedom (8-DOF) integrated model consists of 2-DOF for the quarter car model, 2-DOF for the semi-active seat suspension and 4-DOF for the human model. A magneto-rheological (MR) damper is implemented for the seat suspension. The fuzzy logic-based self-tuning (FLST) proportional–integral–derivative (PID) controller allows to regulate the controlled force on the basis of sprung mass velocity error and its derivative as input. The controlled force is tracked by the Heaviside step function which determines the supply voltage for the MR damper. The performance of the proposed integrated model is analysed, in-terms of human head accelerations, for several road profiles and at different speeds. The performance of the semi-active seat suspension is compared with the traditional passive seat suspension to validate the effectiveness of the proposed integrated model with a semi-active seat suspension. The simulation results show that the semi-active seat suspension improves the ride comfort significantly by reducing the head acceleration effectively compared to the passive seat suspension.

Modelling and Control of Mechatronic and Robotic Systems

“…In [10], a 8-DOF integrated model of a semi-active seat suspension with a human model over a quarter is presented. A fuzzy logic-based self-tuning PID controller allows to regulate the controlled force on the basis of sprung mass velocity error and its derivative as input.…”

Designing and analyzing the efficiency of seat’s three vibration isolator modes in improving the driver’s comfort

“…To improve ride comfort, the vehicle's suspension systems were researched and controlled based on advanced control approaches. [1][2][3][4][5][6] The results showed that the vehicle's ride comfort was significantly reduced. However, with the soil compactors and heavy trucks, the comfort in these vehicles is still low.…”

A Magnetoelectric Hybrid Hydraulic Damper for the Mining Robot Suspension System

“…Active suspension is a system that adds an active controller, which actively generates the corresponding damping force according to different external disturbances as a way to adjust the movement of the body. e practical application of active suspension in vehicles is limited due to its higher power consumption and lower reliability [5]. Semiactive suspension is widely used, which does not require high power semiactive suspension, while it adjusts the damping characteristics by means of low power signals.…”