A Two-surface Discrete Sliding Mode Control based on Approach Angle Reaching Law

نویسندگان

  • Rinu Alice Koshy
  • Susy Thomas
چکیده

Sliding mode controllers are known to be robust to parameter changes, disturbances and uncertainties. In this paper a novel discrete time sliding mode controller with two surfaces is proposed to improve the speed of response. Here, approach angle reaching law is used to take the trajectory to the surfaces. The advantage is that the system trajectory is bought to the first surface with maximum velocity thereby shortening the reaching phase. The scheme assures robustness, asymptotic stability and fast transients with minimum chattering.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A Novel Approach to Designing of Chattering-Free Sliding-Mode Control in Second-Order Discrete-Time Systems

In this paper, a chattering-free sliding-mode control is mainly proposed in a second-order discrete-time system. For achieving this purpose, firstly, a suitable control law would be derived by using the discrete-time Lyapunov stability theory and the sliding-mode concept. Then the input constraint is taken into account as a saturation function in the proposed control law. In order to guarantee ...

متن کامل

AN OPTIMAL FUZZY SLIDING MODE CONTROLLER DESIGN BASED ON PARTICLE SWARM OPTIMIZATION AND USING SCALAR SIGN FUNCTION

This paper addresses the problems caused by an inappropriate selection of sliding surface parameters in fuzzy sliding mode controllers via an optimization approach. In particular, the proposed method employs the parallel distributed compensator scheme to design the state feedback based control law. The controller gains are determined in offline mode via a linear quadratic regular. The particle ...

متن کامل

A Novel Second-order Recursive Reaching Law based Discrete-time Sliding Mode Control

In this paper, a novel technique of second order recursive reaching law based sliding mode control for a discrete-time system is presented. The proposed second order recurrence dictates the dynamics of sliding function using its two past terms. The synthesized control input utilises two past control inputs and results in better continuity in discrete-time, known as (p,q)-continuity.

متن کامل

Terminal Sliding Mode Control for Nonlinear Systems with both Matched and Unmatched Uncertainties

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 new sliding mode controller is derived to guarantee the ...

متن کامل

Multirate Output Feedback Based Discrete-Time Sliding Mode Control for a Class of Nonlinear Systems

The concept of sliding mode control was first introduced by Emelyanov [Emelyanov, 1967] and Utkin [Utkin, 1977]. It is a technique that achieves desired characteristics for the system by confining its states to a specified subset of the state space. This is done by application of a control of variable structure. The main advantage of sliding mode control is its insensitivity to system parameter...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2012