Design of an Adaptive Terminal Dynamic Sliding Mode Controller for Anti-Ship Missiles

2012 ◽  
Vol 187 ◽  
pp. 190-195 ◽  
Author(s):  
Peng Cheng He ◽  
Lin Sheng Jia ◽  
Yu Lin Wang ◽  
Wen Guang Zhang
Keyword(s):  
Control Strategy ◽  
Sliding Mode ◽  
Tracking Error ◽  
Lyapunov Stability Theory ◽  
Adaptive Method ◽  
Sliding Mode Controller ◽  
Overload Control ◽  
Output Tracking ◽  
Dynamic Sliding Mode Control ◽  
Dynamic Sliding Mode

Adaptive dynamic sliding mode control strategy for the overload control of anti-ship missiles using Lyapunov stability theory is proposed. By using a function augmented sliding hyperplane, it is guaranteed that the output tracking error converges to zero in finite time. In addition, an adaptive method is adopted to attenuate the uncertainties. The simulation shows validity of the proposed method.

scholarly journals Dynamic Sliding Mode Control Based on Fractional Calculus Subject to Uncertain Delay Based Chaotic Pneumatic Robot

2020 ◽  
Vol 10 (3) ◽  
pp. 413-420 ◽  
Author(s):  
Sara Gholipour ◽  
Heydar Toosian Shandiz ◽  
Mobin Alizadeh ◽  
Sara Minagar ◽  
Javad Kazemitabar
Keyword(s):  
Fractional Calculus ◽  
Sliding Mode Control ◽  
Control Method ◽  
Sliding Mode ◽  
Robot Manipulator ◽  
Lyapunov Stability Theory ◽  
Mode Control ◽  
Control Scheme ◽  
Dynamic Sliding Mode Control ◽  
Dynamic Sliding Mode

Background & Objective: This paper considers the chattering problem of sliding mode control in the presence of delay in robot manipulator causing chaos in such electromechanical systems. Fractional calculus was used in order to produce a novel sliding mode to eliminate chatter. To realize the control of a class of chaotic systems in master-slave configuration, a novel fractional dynamic sliding mode control scheme is presented and examined on the delay based chaotic robot. Also, the stability of the closed-loop system is guaranteed by Lyapunov stability theory. Methods: A control scheme is proposed for reducing the chattering problem in finite time tracking and robust in presence of system matched disturbances. Results: Moreover, delayed robot motions are sorted out for qualitative and quantitative study. Finally, numerical simulations illustrate feasibility of the proposed control method. Conclusion: The control scheme is viable.

scholarly journals Modelling, Simulation and Dynamic Sliding Mode Control of a MEMS Gyroscope

Micromachines ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 190
Author(s):  
Yunmei Fang ◽  
Wen Fu ◽  
Cuicui An ◽  
Zhuli Yuan ◽  
Juntao Fei
Keyword(s):  
Sliding Mode Control ◽  
Sliding Mode ◽  
Time Derivative ◽  
Control Variable ◽  
Sliding Mode Controller ◽  
Control Input ◽  
Adaptive Dynamic ◽  
Mode Control ◽  
Dynamic Sliding Mode Control ◽  
Dynamic Sliding Mode

An adaptive dynamic sliding mode control via a backstepping approach for a microelectro mechanical system (MEMS) vibratory z-axis gyroscope is presented in this paper. The time derivative of the control input of the dynamic sliding mode controller (DSMC) is treated as a new control variable for the augmented system which is composed of the original system and the integrator. This DSMC can transfer discontinuous terms to the first-order derivative of the control input, and effectively reduce the chattering. An adaptive dynamic sliding mode controller with the method of backstepping is derived to real-time estimate the angular velocity and the damping and stiffness coefficients and asymptotical stability of the designed systems can be guaranteed. Simulation examples are investigated to demonstrate the satisfactory performance of the proposed adaptive backstepping sliding mode control.

Continuous dynamic sliding mode control of converter-fed DC motor system with high order mismatched disturbance compensation

2020 ◽  
Vol 42 (14) ◽  
pp. 2812-2821 ◽  
Author(s):  
Arshad Rauf ◽  
Shihua Li ◽  
Rafal Madonski ◽  
Jun Yang
Keyword(s):  
High Performance ◽  
Control Method ◽  
Sliding Mode ◽  
Lyapunov Stability Theory ◽  
High Order ◽  
Engineering Practice ◽  
Sliding Mode Controller ◽  
Multiple Sources ◽  
Continuous Dynamic ◽  
Dynamic Sliding Mode

The combination of DC-DC buck power converters with DC motors for generating the so-called smooth start of drives has many advantages in engineering practice. Achieving high performance of such systems is, however, limited by the influence of disturbances/uncertainties of multiple sources. Some of the disturbances are mismatched, which makes them even more difficult to handle. Furthermore, the relatively high order of system dynamics makes the control design challenging. In this paper, a control structure with continuous dynamic sliding mode controller with a finite-time disturbance observer is proposed to address these practical issues. First, a special state transformation is applied, aggregating the acting disturbances/uncertainties in a sole perturbing term of the system expressed in new coordinates. Then, the observer estimates in real time the information about the lumped disturbances based on already available input/output signals and the obtained estimated signals (and their high order time-derivatives) are used to construct a sliding surface. Finally, the sliding mode controller is applied to achieve high performance of the resultant plant dynamics and to robustify the governing scheme against modelling discrepancies. The stability of the closed-loop system is proved here using Lyapunov stability theory and the efficiency of the proposed control method is validated through a multi-criteria numerical simulation.

scholarly journals A Novel Sensorless Approach for Speed and Displacement Control of Bearingless Switched Reluctance Motor

2020 ◽  
Vol 10 (12) ◽  
pp. 4070
Author(s):  
Pulivarthi Nageswara Rao ◽  
Nallapaneni Manoj Kumar ◽  
Sanjeevikumar Padmanaban ◽  
M. S. P. Subathra ◽  
Aneesh A. Chand
Keyword(s):  
Sliding Mode ◽  
Tracking Error ◽  
Switched Reluctance Motor ◽  
Mode Switching ◽  
Stable Operation ◽  
Sliding Mode Controller ◽  
Switched Reluctance ◽  
Error Functions ◽  
Reluctance Motor ◽  
Dynamic Sliding Mode

The bearingless concept is a plausible alternative to the magnetic bearing drives. It provides numerous advantages like minimal maintenance, low cost, compactness and no requirement of high-performance power amplifiers. Controlling the rotor position and its displacements under parameter variations during acceleration and deceleration phases was not effective with the use of conventional controllers like proportional–integral–derivative (PID) and fuzzy-type controllers. Hence, to get the robust and stable operation of a bearingless switched reluctance motor (BSRM), a new robust dynamic sliding mode controller has been proposed in this paper, along with a sensorless operation using a sliding ode observer. The rotor displacement tracking error functions and speed tracking error functions are used in the designing of both proposed methods of the sliding mode switching functions. To get a healthy and stable operation of the BSRM, the proposed controller’s tasks are divided into three steps. As a first step, the displaced rotor in any one of the four quadrants in the air gap has to pull back to the centre position successfully. The second step is to run the motor at a rated speed by exciting torque phase currents, and finally, the third step is to maintain the stable and robust operation of the BSRM even under the application of different loads and changes of the motor parameters. Simulation studies were conducted and analysed under different testing conditions. The suspension forces, rotor displacements, are robust and stable, and the rotor is pulled back quickly to the centre position due to the proposed controller’s actions. The improved performance characteristics of the dynamic sliding mode controller (DSMC)-based sliding mode observer (SMO) was compared with the conventional sliding mode controller (SMC)-based SMO.

scholarly journals Continuous dynamic sliding mode control strategy of PWM based voltage source inverter under load variations

PLoS ONE ◽  
2020 ◽  
Vol 15 (2) ◽  
pp. e0228636
Author(s):  
Waqas Anjum ◽  
Abdul Rashid Husain ◽  
Junaidi Abdul Aziz ◽  
M. Abbas Abbasi ◽  
Hasan Alqaraghuli
Keyword(s):  
Sliding Mode Control ◽  
Control Strategy ◽  
Sliding Mode ◽  
Voltage Source ◽  
Voltage Source Inverter ◽  
Load Variations ◽  
Mode Control ◽  
Dynamic Sliding Mode Control ◽  
Continuous Dynamic ◽  
Dynamic Sliding Mode

Fractional Dynamic Sliding Mode Control for uncertain chaotic systems Applied to a Chaotic Robot arm under dynamic load.

2020 ◽  
Vol 10 ◽  
Author(s):  
Sara Gholipour P ◽  
Sara Minagar ◽  
Javad Kazemitabar ◽  
Mobin Alizadeh
Keyword(s):  
Sliding Mode Control ◽  
Chaotic Systems ◽  
Control Method ◽  
Sliding Mode ◽  
Qualitative And Quantitative ◽  
Mode Control ◽  
Quantitative Characteristics ◽  
Dynamic Sliding Mode Control ◽  
Dynamic Sliding Mode ◽  
Qualitative And Quantitative Characteristics

Background: A novel type of control strategy is presented for control of chaotic systems particularly a chaotic robot in joint and workspace which is the result of applying fractional calculus to dynamic sliding mode control. Objectives: To guarantee the sliding mode condition, control law is introduced based on the Lyapunov stability theory. Methods: A control scheme is proposed for reducing the chattering problem in finite time tracking and robust in presence of system matched disturbances. Conclusion: Also, all of chaotic robot's qualitative and quantitative characteristics have been investigated. Numerical simulations indicate viability of our control method. Results: Qualitative and quantitative characteristics of the chaotic robot are all proven to be viable thru simulations.

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