Fractional order adaptive fuzzy sliding mode controller for a position servo system subjected to aerodynamic loading and nonlinearities

Ullah, Nasim; Wang, Shaoping; Khattak, Muhammad Irfan; Shafi, Muhammad

doi:10.1016/j.ast.2015.03.020

Cited by 92 publications

(38 citation statements)

References 26 publications

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“…SOSM control has proven in several studies and research applications its effectiveness in minimizing chattering effect which is mainly caused by the presence of a discontinuous control term containing the sign function [13][14][15]. To ameliorate the SOSM-DTC of the DFIG and more and more decrease the adverse effect caused by the sign function, in this work we suggest to employ a hybrid approach of second order sliding mode and fuzzy logic by replacing this function by an inference fuzzy system.…”

Section: A Controller Synthesismentioning

confidence: 99%

“…The approach based on boundary layer is applied in almost all cases [12]. Another efficiency solution consists to substitute the discontinuous control signal by fuzzy logic one has also been used recently in some research works [13][14][15]. For the same goal the notion of HOSM control has also proven its competence in [16,17] for different applications.…”

Section: Introductionmentioning

confidence: 99%

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A New DTC Scheme using Second Order Sliding Mode and Fuzzy Logic of a DFIG for Wind Turbine System

Boudjema¹,

Taleb²,

Yahdou³

2016

ijacsa

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Abstract-This article present a novel direct torque control (DTC) scheme using high order sliding mode (HOSM) and fuzzy logic of a doubly fed induction generator (DFIG) incorporated in a wind turbine system. Conventional direct torque control strategy (C-DTC) using hysteresis controllers presents considerable flux and torque undulations at steady state period. In order to ensure a robust DTC method for the DFIG-rotor side converter and reduce flux and torque ripples, a second order sliding mode (SOSM) technique based on super twisting algorithm and fuzzy logic is used in this paper. Simulation results show the efficiency of the proposed method of control especially on the quality of the provided power comparatively to a C-DTC.

show abstract

Section: A Controller Synthesismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A New DTC Scheme using Second Order Sliding Mode and Fuzzy Logic of a DFIG for Wind Turbine System

Boudjema¹,

Taleb²,

Yahdou³

2016

ijacsa

View full text Add to dashboard Cite

show abstract

“…However, this type of system regards the torque as a controlled variable [9][10][11] and must track the position command of the rudder while tracking the torque command signal. Thus, the presence of additional torque is inevitable [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

The Stiffness Calculation and Optimization for the Variable Stiffness Load Torque Simulation System

Yao

Zhou

2017

International Journal of Aerospace Engineering

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This paper presents a novel design for a variable stiffness load torque simulation system. The system is applied to the load torque on a rudder in a real-time hardware-in-the-loop system (HILS). Compared with the traditional loading method, in which unavoidable additional torque exists, the variable stiffness loading system employs a "first decomposed and then coupled" approach to output the load torque and to significantly reduce the additional torque. Based on experimental data obtained from a wind tunnel test, a calculation method is proposed to determine the loading parameters of the variable stiffness loading system. Since the load stiffness is related to a variety of factors, the stiffness values obtained from wind tunnel test data, such as the fixed Mach number and the rudder deflection angle, are not definite values. By analyzing the influencing factors of the loading parameters, an optimal set of load stiffness is obtained using an optimization algorithm, and exact tracking of the load torque is achieved. Using the calculation method to obtain a loading torque for the rudder as an example, the torque tracking error is less than 0.05 Nm. The simulation results indicate that the proposed calculation method for variable stiffness loading is effective.

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“…Such controller design includes L2 robust control, 10 friction compensation based on a genetic algorithm, 11 active disturbance rejection control, 12 sensorless control using Kalman filter, 13 reduced-order observer design, 14 and sliding mode control. 15 Optimization of controller parameters includes fuzzy controller optimization based on adaptive gravitational search, 16 PID controller tuning with a genetic algorithm, 17 and PID controller tuning using a bat algorithm. 18,19 Hence, SMS show excellent positioning behavior with either classical controller or advanced control technology and seem to be a suitable solution for PMSS.…”

Section: Introductionmentioning

confidence: 99%

Novel electro-hydraulic position control system for primary mirror supporting system

Peng

Gong

Yang

et al. 2016

Advances in Mechanical Engineering

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In the field of modern large-scale telescope, primary mirror supporting system technology faces the difficulties of theoretically uniform output force request and bias compensation. Therefore, a novel position control system combining hydraulic system with servo motor system is introduced. The novel system ensures uniform output force on supporting points without complicating the mechanical structure. The structures of both primary mirror supporting system and novel position system are described. Then, the mathematical model of novel position control system is derived for controller selection. A proportional-derivative controller is adopted for simulations and experiments of step response and triangle path tracking. The results show that proportional-derivative controller guarantees the system with micrometerlevel positioning ability. A modified proportional-derivative controller is utilized to promote system behavior with faster response overshoot. The novel position control system is then applied on primary mirror supporting system. Coupling effect is observed among actuator partitions, and relocation of virtual pivot supporting point is chosen as the decoupling measurement. The position keeping ability of the primary mirror supporting system is verified by rotating the mirror cell at a considerably high rate. The experiment results show that the decoupled system performs better with smaller bias and shorter recovery time.

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Fractional order adaptive fuzzy sliding mode controller for a position servo system subjected to aerodynamic loading and nonlinearities

Cited by 92 publications

References 26 publications

A New DTC Scheme using Second Order Sliding Mode and Fuzzy Logic of a DFIG for Wind Turbine System

A New DTC Scheme using Second Order Sliding Mode and Fuzzy Logic of a DFIG for Wind Turbine System

The Stiffness Calculation and Optimization for the Variable Stiffness Load Torque Simulation System

Novel electro-hydraulic position control system for primary mirror supporting system

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