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Anti-lock and also Anti-slip braking system controller designed for stability enhancement of vehicle during braking and turning circumstances is presented. Using available signals, a novel structure is proposed for vehicle stability improvement encountering critical braking conditions such as braking on slippery or μ-split road surfaces. In conventional vehicles, undesired lane changes may occur due...
Hybrid under-actuated control for the autonomous dynamic balance of a running electrical bicycle including frictional torque and motor dynamics is developed, where includes two control inputs: steering and pendulum voltages, and three system outputs: steering, lean and pendulum angles. Due to the under-actuated feature, two novel reference signals using three system outputs are designed so that the...
The bearingless permanent magnet-types synchronous motor is nonlinear and coupling complex system. On the basis of the full formula which express the coupling between suspension and rotor torque, parameters of the motor are discussed to the operation speed and suspension performance. Meanwhile, aiming at the robust control problem, fuzzy adaptive sliding mode control theory is applied. Throughout...
Aiming at the rapidity control problem of direct drive electro-hydraulic (DDEH) servo rotary vane steering gear, a design method of adaptive fuzzy sliding mode control with friction torque dynamic compensation is presented. The friction torque dynamic compensation method is introduced to enhance the response of the system. The adaptive fuzzy controller is introduced to solve the problem of the uncertain...
This paper presents a fuzzy sliding mode speed control design procedure for robust stabilization and disturbance rejection of the synchronous reluctance motor (SynRM) drive system. In general, the conventional sliding mode control design is assumed that the upper boundary of parameter variations and external disturbances is known and the sign function is used. Therefore, it causes high frequency chattering...
This paper presents a fuzzy sliding mode controller for a vector controlled induction motor fed by a pulse width modulation voltage source inverter. The proposed control scheme combines a sliding mode controller and a fuzzy controller. Few fuzzy rules are used for this strategy control. The sliding mode control is used to achieve robust performance against parameter variations and external disturbances...
The position tracking control of a missile electrohydraulic servo mechanism is studied. Since the dynamics of the system are highly nonlinear and have large extent of model uncertainties, such as big changes in load and parameters, a design method of adaptive fuzzy sliding mode control is presented. The adaptive fuzzy controller is introduced to approach the equivalent control of sliding mode control,...
In this paper a novel nonlinear technique for controlling the current in high-performance switched reluctance machine (SRM) drives is introduced. The proposed drive scheme comprises two nonlinear control loops, an inner current control loop and an outer speed control loop. The current control loop employs a sliding mode pulse width modulator (SMPWM), while the speed controller utilizes fuzzy logic...
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