This paper presents an active slip control system (ASCS) for a four-wheel drive electric vehicle (EV) using suspension of the vehicle. The integrated mechanism is designed combination fuzzy controller and nonlinear back-stepping to individual wheels with help In this research, presented implemented in two steps. first step, based on friction coefficient calculated from tire model, will generate...

Mobile Robots are used to venture through types of environments where wheel slip is a threat. Wheel slip is a hazard to mobile robots in that it introduces error in dead reckoning measurement and in some instances causes the robot to halt is forward progress. To compensate for traction loss several methods are used to determine the terrain characteristics. One of these methods is Pacejka’s Tire...

Abstract Safety and efficiency are key aspects of research development in the automotive industry, especially field safety‐critical subsystems, such as brake systems. The effect time delay arise systems, this adverse can cause performance degradations or make system unstable. In study, bifurcation analysis a wheel slip control feedback loop is presented. consists tyre, delayed actuator dynamics...

Estimation of contact state is important to any multi-point interaction that involves frictional stick/slip phenomena. In particular, when there are more kinematic constraints than there are degrees of freedom, some contact interfaces must slip, leading to the need for contact state estimation. Fortunately, supervisory control techniques from adaptive control can be applied to this problem with...

The application of fuzzy-based control strategies has recently gained enormous recognition as an approach for the rapid development of effective controllers for nonlinear time-variant systems. This paper describes the preliminary research and implementation of a fuzzy logic based controller to control the wheel slip for electric vehicle antilock braking systems (ABSs). As the dynamics of the br...

This paper presents an effective rotor current controller for variable-speed stand-alone doubly fed induction generator (DFIG) systems feeding an unbalanced three-phase load. The proposed current controller is developed based on proportional plus two resonant regulators, which are tuned at the positive and negative slip frequencies and implemented in the rotor reference frame without decomposin...

Since its invention by Nikola Tesla in 1888, the alternating-current (AC) motor has been a critical driver for the industrial age. One of his original three patents was the wound rotor induction motor (WRIM). Later, Westinghouse refined the design of the wound rotor motor to permit control of the speedtorque characteristics of the machine. This paper discusses a new advancement in Pulse Width M...

Abstract: This paper presents an adaptive control strategy for a tracked mobile robot, in which the longitudinal slip of the left and right tracks are described by two unknown parameters. It is assumed that the kinematic model of the tracked robot is approximated by the one of a differential wheeled robot. An adaptive nonlinear feedback control law that compensates for the longitudinal slip is ...

In this paper the factor of safety (FS) and critical line-segments slip surface obtained by the Alternating Variable Local Gradient (AVLG) optimization method was presented as a new topic in 2D. Results revealed that the percentage of reduction in the FS obtained by switching from a circular shape to line segments was higher with the AVLG method than other methods. The 2D-AVLG optimization meth...