Study on SASS with Magneto-Rheological Fluid Damper Based on Improved Variable Universe Fuzzy Control

2011 ◽  
Vol 130-134 ◽  
pp. 1418-1421
Author(s):  
Guang Xia ◽  
Wu Wei Chen ◽  
Xi Wen Tang ◽  
Qi Ming Wang
Keyword(s):  
Fuzzy Control ◽  
Control Strategy ◽  
Passive Suspension ◽  
Damping Effect ◽  
Variable Universe ◽  
Fluid Damper ◽  
Variable Universe Fuzzy Control ◽  
Fuzzy Control Strategy ◽  
Magneto Rheological ◽  
Linear Property

Considering the non-linear property of the magneto-rheological damper and the low accuracy of the traditional fuzzy control, this paper introduces a semi-active magneto-rheological damper controller which is based on the improved variable universe fuzzy control strategy and conducts a simulation of it. Next, it analyzes the damping effect of the passive suspension and the semi-active suspension. As indicated by the results, the use of the advanced variable universe fuzzy control strategy can effectively improve the ride and comfort of an automobile, and it serves as a reference for the further theoretical researches and sample vehicle experiments in the future.

Variable universe fuzzy control of the lateral stability of forklift trucks based on roll grading

2021 ◽  
pp. 095440702110292
Author(s):  
Yang Zhang ◽  
Guang Xia ◽  
Xiwen Tang ◽  
Linfeng Zhao ◽  
Baoqun Sun
Keyword(s):  
Fuzzy Control ◽  
Control Strategy ◽  
Fuzzy Controller ◽  
Second Order ◽  
Prototype Model ◽  
Lateral Stability ◽  
First Order ◽  
Variable Universe ◽  
Forklift Truck ◽  
Variable Universe Fuzzy Control

Based on the structural analysis and the roll mechanisms of counterbalanced forklift truck, a novel type of 3-link hydraulic supporting mechanism is designed as an actuator for forklift anti-rollover control. A rollover grading control strategy of the lateral stability of counterbalanced forklift truck is proposed, which is used to design a variable universe fuzzy controller. The variable universe fuzzy control of the first-order roll is utilized when the forklift is in the first-order roll, whereas the variable universe fuzzy control of the second-order is used when the forklift is in the second-order roll. A virtual prototype model of forklift is built in Automatic Dynamic Analysis of Mechanical Systems (ADAMS). The co-simulations and vehicle tests are implemented, the results indicate that the lateral stability and active security of the forklift could be improved effectively by using the variable universe fuzzy control strategy of the lateral stability of forklift truck based on roll grading.

Research on the Fuzzy Control for Vehicle Semi-Active Suspension

2013 ◽  
Vol 683 ◽  
pp. 716-719
Author(s):  
Xiao Ming Hu ◽  
Wan Li Li
Keyword(s):  
Fuzzy Control ◽  
Control Strategy ◽  
Simulation Analysis ◽  
Control Strategies ◽  
Active Suspension ◽  
Vehicle Body ◽  
Output Current ◽  
Simulation Results ◽  
Fuzzy Control Strategy ◽  
Magneto Rheological

The whole vehicle was divided into eight pieces for establishing the semi-active suspension vehicle mode. The different fuzzy control strategies were designed according to the vertical, heeling and pitching movement of vehicle body. The vertical, heeling and pitching comprehensive vibration of the vehicle were reduced by controlling the output current of the magneto-rheological damper. Simulation analysis was operated with the parameters of a certain type of vehicle, the simulation results show that the method using the fuzzy control strategy can well improve the vehicle riding comfortableness, and its effect is superior to the optimal control.

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