نتایج جستجو برای: fast terminal sliding mode
تعداد نتایج: 604980 فیلتر نتایج به سال:
To solve the problem of PI control cannot achieve satisfactory dynamic performance under complex operating conditions, an improved model-free continuous super-twisting non-singular fast terminal sliding mode (NFTSM) algorithm (IMFSTNFTSMC) for IPMSM based on extended higher-order disturbance observer (IESMDO) is proposed. Firstly, speed-current hyperlocal models are developed; Then, controllers...
The advent of highly efficient and superior digital devices and fast microprocessors for control application has opened the field of discrete time controller design. This paper presents an exciting application of magnetic levitation system using discrete sliding mode control. There is a limited volume of literature available for discrete sliding mode control as applied to magnetic levitation sy...
Aiming at the problems of frequent overshoot and slow response time in space vector direct torque control system permanent magnet synchronous motor, a strategy based on fast-super-twisting algorithm was proposed. Based traditional super-twisting algorithm, fast terminal sliding mode reaching law (FTSMRL) is introduced strategy, which improves algorithm’s robustness convergence speed, suppresses...
In this paper, aiming at the known or unknown uncertainties in permanent magnet linear synchronous motor (PMLSM) servo system, an intelligent backstepping terminal sliding mode control (IBTSMC) method is proposed for accurate position tracking of system. The designed controller makes use advantage theory to ensure fast convergence and robustness. Finally, stability analysis carried out by using...
This paper proposes a particle swarm optimization algorithm tuned fuzzy terminal sliding mode control for the application of UPS inverters. Though classic sliding mode control (SMC) is insensitive to system uncertainties, it possesses an infinite system-state convergence time. For high-accuracy tracking control, a terminal sliding mode control (TSMC) is developed to provide a finite system-stat...
In this paper, we extend the sliding mode idea to a class of unmatched uncertain variable structure systems. This method is achieved with introducing a new terminal sliding variable and the finite time stability of proposed method is proved using a new particular finite time condition in both reaching and sliding phases. In reaching phase a new sliding mode controller is derived to guarantee th...
Under-actuated nonlinear dynamic systems trajectory tracking, such as space robots and manipulators with structural flexibility, has recently been investigated for hierarchical sliding mode control since these systems require complex computations. However, the instability phenomena possibly occur especially for long-term operations. In this paper, a new design approach of an adaptive fuzzy hier...
this paper introduces an indirect adaptive fuzzy sliding mode controller as a power system stabilizer for damping local and inter-area modes of oscillations of multi-machine power systems. this controller is designed based on the combination of sliding mode controller and the fuzzy logic systems. the fuzzy systems are used to approximate the unknown functions of power system model. generator sp...
This paper proposes a distributed framework for formation control of USVs around a predefined target. This framework, according to the mission and problem conditions, includes three parts: determination of a desired path for each USV, preventing USVs entry to the target area and tracking the desired path of USVs under environmental disturbances. In the first part, a distributed approach is prop...
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