H∞ Control of Active Suspension System for a Quarter Car Model

Abstract

In recent years, the use of active control mechanisms in active suspension systems has attracted considerable attention. The main objective of this research is to develop a mathematical model of an active suspension system that is subjected to excitation from different road profiles and control it using H∞ technique for a quarter car model to improve the ride comfort and road handling. Comparison between passive and active suspension systems is performed using step, sinusoidal and random road profiles. The performance of the H∞ controller is compared with the passive suspension system. It is found that the car body acceleration, suspension deflection and tyre deflection using active suspension system with H∞ technique is better than the passive suspension system.

Online Reinforcement Learning-Based Control of an Active Suspension System Using the Actor Critic Approach

“…Another comparison based on the quarter model, but between a robust PI and Linear Quadratic Regulator (LQR) controller, was conducted by [6], where they showed that the LQR outperformed the PI controller in the presence of parameter uncertainty. Another optimal controller is H ∞ , which was examined by [7] and showed a 93% reduction in the car's acceleration, wheel travel, and suspension travel.…”

Research on Suspension with Novel Dampers Based on Developed FOA-LQG Control Algorithm

“…where is damping force of MD; is plastic viscosity of liquid; is offset force; 1 , are shown in Figure 2. Figure 3 displays the physical model of a researched quarter suspension, according to which its mathematic model can be expressed by the following [29]:…”

Control of Electric Wheelchair Suspension System based on Biodynamic Response of Seated Human Body

“…Suspension systems are designed to reduce the transmission of vibration from road surface disturbances. Semi active and active suspension systems have been more attractive for researchers during the last several decades [1][2][3][4][5][6][7][8][9][10].…”

“…It was found that controlled suspension can provide much better performance in the ride comfort compared with uncontrolled system. In the study by Nouby et al [10] a quarter vehicle active suspension control model is *Corresponding Author Email: a.saghafi@birjandut.ac.ir (A. Saghafi) developed.…”