<p style='text-indent:20px;'>A methodology for fault-tolerant-control(FTC) is proposed that compensates actuator failures in active suspension systems (ASS). This based on a Frequency Domain approach represents using scale factor to optimize the ASS and improve ride comfort. The controller design carried out off-the-shelf tools linear matrix inequalities (LMIs), guaranteeing asymptotic st...

This study presents evaluation of effect of in-wheel electric motors mass on the performance of passive and active suspension systems using matlab. Linear Quadratic Regulator (LQR) is one of more common control methods which is used to complete the design of the active suspension system in this paper .Unsprung mass is one of the important parameters which effects on road holding and ride comfor...

The various interaction forces that govern the stability/flocculation of concentrated suspensions are briefly described. Combination of these interactions result in three main energy-distance curves which determine the final state of the suspension. This ranges from colloidally stable to strongly flocculated (coagulated) suspensions. A schematic representation of the various states of suspensio...

In this paper, the modeling and control of reluctance-force-based magnetic suspension in cylindrical rotor, ring-shape air gap, bearingless motors are presented. The full suspension system dynamics, including both the destabilizing force due to the motor field and the active magnetic suspension control forces, are modeled, and a transfer function of the bearingless motor suspension plant is der...

Current workflow management systems implement the ability to automatically execute predefined process models. However, processes change over time and therefore a redeployment process has to be implemented to propagate changes into the running process enactment environment. One of the necessary steps in change propagation is to suspend the current process execution. This suspension does however ...

This paper investigates the problem of stability analysis and fuzzy-smith compensation control for semi-active suspension systems with time delay. The dynamic system of the suspension system with time delay is first formulated in terms of control objectives, such as ride comfort, road handling, and suspension deflection. By using the Lyapunov stability analysis, the necessary and sufficient con...

A novel fuzzy-logic-based control for vehicle-active suspension is suggested. The vehicle vibration and disturbance are reduced considerably with a fuzzy logic controller, to enhance comfort in riding faced with uncertain road terrains. A quarter-car active suspension system is controlled to reduce the vertical acceleration to a level of, that of, a hypothetical reference model. A new look-up t...

Two methods for parameters optimization of traditional passive suspension based on the invariant point theory are presented in this paper. Firstly, the two degree-of-freedom dynamical model for a quarter vehicle suspension is established. Then all the invariant points for the acceleration of INTERNATIONAL JOURNAL ON SMART SENSING AND INTELLIGENT SYSTEMS VOL. 6, NO. 5, DECEMBER 2013