A model following sliding mode controller for semi-active suspension systems with MR dampers

Synthesis of a Magneto-Rheological vehicle suspension system built on the variable structure control approach

“…A reference model was considered for specifying the desired dynamics for the vehicle body. Then, a variable structure control force was derived in order to force the tracking error dynamics, between the state vector of the vehicle body and the corresponding one of the reference model, to attain a sliding mode (Yokoyama, Hedrick and Toyama, 2001). This force was taken as the desired one for the MR dampers.…”

“…In order to circumvent those technical difficulties, a lot of effort has been recently devoted to semi-active suspensions (Yokoyama, Hedrick and Toyama, 2001;Stutz and Rochinha, 2005;Nguyen and Choi, 2009). Basically, semi-active suspensions differ from the passive ones by the fact that their stiffness and/or damping properties can be actively changed according to some control strategy.…”

“…Therefore, due to dynamic complexities, parameter uncertainties and varying operational conditions, always present in vehicle suspension problems, different active and semi-active suspensions built on the variable structure control approach have been proposed in the literature. In Yokoyama, Hedrick and Toyama (2001) the variable structure control was considered to synthesize a MR suspension system for a quarter-car model. In that paper, the control law was derived so that the dynamics of the system followed a desired one provided by a reference model.…”

Neural Network Control of Non-Linear Full Vehicle Model Vibrations

“…(Park & Kim, 2000) designed a decentralized variable structure controller for active suspension systems of vehicles. (Yokoyama et al, 2001) examined a new SMC for semiactive suspension systems with magneto-rheological (MR) dampers which have undesirable non-linear properties. (Yoshimura et al, 2001) showed the construction of an active suspension system for a quarter car model using the concept of sliding mode control.…”

Comparative Analysis of Passenger Ride Comfort using Various Semi-Active Suspension Alternatives

“…Damping behaviour controlling of MR shock absorber in semi-active suspension system is based on the working of the assembled two controllers, where first controller generates desired damping force signal whereas second controller is responsible for supplying the command current to MR shock absorber. In past, various control strategies have been studied related to vibration control applications in semi-active suspension systems such as H-infinity control [7], sliding mode control [8], fuzzy logic control [9], adaptive control [10], neural network control [11] and skyhook, ground-hook and hybrid control [12] etc.…”