Semi-active Suspension System Design for Quarter-car Model using Model Reference Sliding Mode Control

2006 ◽  
Author(s):  
Jia-ling Yao ◽  
Jia-qiang Zheng
Keyword(s):  
Sliding Mode Control ◽  
System Design ◽  
Sliding Mode ◽  
Active Suspension ◽  
Suspension System ◽  
Model Reference ◽  
Quarter Car Model ◽  
Car Model ◽  
Mode Control ◽  
Quarter Car

Ride comfort analysis of passenger body biodynamics in active quarter car model using adaptive neuro-fuzzy inference system based super twisting sliding mode control

2019 ◽  
Vol 25 (12) ◽  
pp. 1866-1882 ◽  
Author(s):  
Devdutt Singh
Keyword(s):  
Sliding Mode Control ◽  
Human Body ◽  
Ride Comfort ◽  
Fuzzy Inference ◽  
Sliding Mode ◽  
Inference System ◽  
Quarter Car Model ◽  
Car Model ◽  
Mode Control ◽  
Quarter Car

In this paper, a four degrees of freedom biodynamic human body model is used for ride comfort analysis, which is coupled with a three degrees of freedom quarter car model. The random road profile is generated in a simulation environment using the ISO 8608:2016 standard. In order to suppress the adverse effects of road induced vibrations on the human body, a super-twisting sliding mode control (STSMC) and adaptive neuro-fuzzy inference system (ANFIS) based super-twisting sliding mode control (ASTSMC) strategy is used in the main suspension of the active quarter car model. The ride comfort response of the human body segments is compared for passive and active suspension systems using the ISO 2631-1:1997 standard. Based on the simulation results in time and frequency domain related to acceleration and displacement response for head and neck, upper torso, viscera and lower torso, it is shown that the ride comfort provided by the ASTSMC controller is much improved compared to the STSMC and passive control method. It can be finalized from the present research work that active suspension with the ASTSMC control strategy can successfully reduce the adverse effects of road induced vibrations on human body health and safety.

A sliding mode controller for vehicle active suspension systems with non-linearities

1998 ◽  
Vol 212 (2) ◽  
pp. 79-92 ◽  
Author(s):  
C Kim ◽  
P I Ro
Keyword(s):  
Sliding Mode Control ◽  
Sliding Mode ◽  
Active Suspension ◽  
Suspension System ◽  
Operating Conditions ◽  
Normal Operation ◽  
Sliding Mode Controller ◽  
Mode Control ◽  
Control Scheme ◽  
Quarter Car

In this paper, the control of an active suspension system using a quarter car model has been investigated. Due to the presence of non-linearities such as a hardening spring, a quadratic damping force and the ‘tyre lift-off’ phenomenon in a real suspension system, it is very difficult to achieve desired performance using linear control techniques. To ensure robustness for a wide range of operating conditions, a sliding mode controller has been designed and compared with an existing nonlinear adaptive control scheme in the literature. The sliding mode scheme utilizes a variant of a sky-hook damper system as a reference model which does not require real-time measurement of road input. The robustness of the scheme is investigated through computer simulation, and the efficacy of the scheme is shown both in time and frequency domains. In particular, when the vertical load to the sprung mass is changed, the sliding mode control resumes normal operation faster than the nonlinear self-tuning control and the passive system by factors of 3 and 6, respectively, and suspension deflection is kept to a minimum. Other results showed advantages of the sliding mode control scheme in a quarter car system with realistic non-linearities.

A sliding Mode Control of Active Suspension Using H2/GH2 Approach to Surface Design

2014 ◽  
Vol 945-949 ◽  
pp. 1305-1308
Author(s):  
Shu Bo Liu ◽  
Xian Xi Luo ◽  
Zhi Hui Wan
Keyword(s):  
Sliding Mode Control ◽  
Control Method ◽  
Sliding Mode ◽  
Active Suspension ◽  
Suspension System ◽  
Surface Design ◽  
Quarter Car Model ◽  
Mode Control ◽  
System A ◽  
Passive Suspension System

This paper considers a new H2/GH2sliding mode control in controlling active suspension system subject to mismatched disturbance, without requiring a prior knowledge of disturbance. A quarter-car model is used in the study and the performance of the controller is compared with the existing passive suspension system. A simulation study is presented to prove the effectiveness and robustness of the proposed control method.

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