Modelling and Experimental Study on Active Energy-Regenerative Suspension Structure with Variable Universe Fuzzy PD Control

Abstract

A novel electromagnetic active suspension with an energy-regenerative structure is proposed to solve the suspension’s control consumption problem. For this new system, a 2-DOF quarter-car model is built, and dynamics performances are studied using the variable universe fuzzy theory and the PD control approach. A self-powered efficiency concept is defined to describe the regenerative structure’s contribution to the whole control consumption, and its influent factors are also discussed. Simulations are carried out using software Matlab/Simulink, and experiments are conducted on the B-class road. The results demonstrate that the variable universe fuzzy control can recycle more than 18 percent vibration energy and provide over 11 percent power for the control demand. Furthermore, the new suspension system offers a smaller body acceleration and decreases dynamic tire deflection compared to the passive ones, so as to improve both the ride comfort and the safety.

Research Review of a Vehicle Energy-Regenerative Suspension System

“…For commercial and off-road vehicles with great weight and severe driving conditions, the energy recovery potential is high. Liu [29] proposed a new type of electromagnetic active suspension with an energy regeneration structure. Experiments on roads above B-Class can recover 18% of vibration energy and provide more than 11% of power for control requirements.…”

Dynamic Characteristics Analysis of Vehicle Incorporating Hydraulically Interconnected Suspension System with Dual Accumulators

“…e status in Circuit B can be derived similarly with (16). en with (15) and (16), the oil pressure at each chamber in DHIS subsystem can be obtained as follows:…”

“…As a consequence, research studies on suspension system aiming at improving handling performance and reducing rollover propensity has found prosperity in terms of both active/semiactive controlled and passive suspensions [1][2][3][4][5][6][7][8]. Many active/semiactive control strategies, such as H ∞ control strategies and sliding-mode control strategies, have been utilized onto vehicle to enhance handling performance and ride comfort [9][10][11][12][13][14][15][16]. However, they are too expensive for ordinary passenger cars.…”

Creation of the energy approach for estimating automobile dynamics and fuel efficiency

“…Significant energy losses cause the need to regenerate it [17] and predetermine employing intelligent automobile systems [18]. Authors of [15][16][17][18] did not consider energy losses caused by fluctuations in the unsprung masses, by a change in the car chassis geometry and by wheel imbalance. These questions were not considered in articles [19][20][21] either.…”