A PID based approximation-free controller with prescribed performance function for model helicopter attitude control

2019 ◽  
Author(s):  
Bin Zhu ◽  
Ruisheng Sun ◽  
Jieqing Chen
Keyword(s):  
Attitude Control ◽  
Performance Function ◽  
Prescribed Performance ◽  
Model Helicopter

Comment on ‘Adaptive prescribed performance sliding mode control of MEMS gyroscope’

2018 ◽  
Vol 41 (3) ◽  
pp. 883-884 ◽  
Author(s):  
Seyed Majid Esmaeilzadeh ◽  
Mehdi Golestani
Keyword(s):  
Steady State ◽  
Tracking Control ◽  
Sliding Mode ◽  
A Priori ◽  
Original System ◽  
Performance Function ◽  
Prescribed Performance ◽  
Rate Maximum ◽  
Mems Gyroscopes ◽  
Transient And Steady State

An adaptive control of MEMS gyroscopes with guaranteed transient and steady-state performance has been presented in Lu and Fei (2016). A performance function characterizing the convergence rate, maximum overshoot and steady-state error is used for the output error transformation, such that stabilizing the transformed system is sufficient to achieve the tracking control of the original system with a priori prescribed performance. The main objective of this comment is to point out a mistake occurred through the paper, resulted in the ineffectiveness of the proposed controller.

scholarly journals Prescribed Performance Control for Two-axis Optronic Stabilized Platform

2018 ◽  
Vol 160 ◽  
pp. 01003
Author(s):  
Wang Yexing ◽  
Luo Changxin ◽  
Zhang Tao ◽  
Liu Yaning ◽  
Xiao Chuhan
Keyword(s):  
Closed Loop ◽  
Initial Error ◽  
Closed Loop System ◽  
Performance Function ◽  
Performance Control ◽  
Prescribed Performance ◽  
Initial Errors ◽  
Prescribed Performance Control ◽  
Unknown Disturbance ◽  
Stabilized Platform

Aiming at improving the tracking and stabilizing performance of two-axis optronic stabilized platform with Stribeck friction and uncertain velocity disturbance, a prescribed performance control strategy with unknown initial errors is designed. By designing a new performance function, the limit of traditional prescribed control that the initial error has to be known accurately is broken through. The strategy possesses strong robustness against unknown disturbance, and the state error is restrained to a predefined arbitrary small residual. It is guaranteed that the closed-loop system is uniformly ultimately bounded. The simulation results demonstrate the effectiveness of proposed strategy.

scholarly journals Active Disturbance Rejection Control for Air-Breathing Hypersonic Vehicles Based on Prescribed Performance Function

2019 ◽  
Vol 2019 ◽  
pp. 1-20 ◽  
Author(s):  
Chenyang Xu ◽  
Humin Lei ◽  
Na Lu
Keyword(s):  
Disturbance Rejection ◽  
Tracking Error ◽  
Hypersonic Vehicles ◽  
Active Disturbance Rejection Control ◽  
Parameter Uncertainties ◽  
Performance Function ◽  
Air Breathing ◽  
Prescribed Performance ◽  
Active Disturbance Rejection ◽  
Disturbance Rejection Control

Aiming at the longitudinal motion model of the air-breathing hypersonic vehicles (AHVs) with parameter uncertainties, a new prescribed performance-based active disturbance rejection control (PP-ADRC) method was proposed. First, the AHV model was divided into a velocity subsystem and altitude system. To guarantee the reliability of the control law, the design process was based on the nonaffine form of the AHV model. Unlike the traditional prescribed performance control (PPC), which requires accurate initial tracking errors, by designing a new performance function that does not depend on the initial tracking error and can ensure the small overshoot convergence of the tracking error, the error convergence process can meet the desired dynamic and steady-state performance. Moreover, the designed controller combined with an active disturbance rejection control (ADRC) and extended state observer (ESO) further enhanced the disturbance rejection capability and robustness of the method. To avoid the differential expansion problem and effectively filter out the effects of input noise in the differential signals, a new tracking differentiator was proposed. Finally, the effectiveness of the proposed method was verified by comparative simulations.

Event-triggered neuroadaptive attitude control for spacecraft with fixed-time prescribed performance

2020 ◽  
Author(s):  
Qi Li ◽  
Xueping Wang ◽  
Qiuxiong Gou ◽  
Zhiqi Niu ◽  
Li Ding ◽  
...  
Keyword(s):  
Attitude Control ◽  
Fixed Time ◽  
Prescribed Performance ◽  
Event Triggered

Prescribed Performance Fine Attitude Control for a Flexible Hypersonic Vehicle with Unknown Initial Errors

2017 ◽  
Vol 20 (6) ◽  
pp. 2357-2369 ◽  
Author(s):  
He‐Wei Zhao ◽  
Yong Liang ◽  
Xiu‐Xia Yang ◽  
Yun‐An Hu
Keyword(s):  
Attitude Control ◽  
Hypersonic Vehicle ◽  
Prescribed Performance ◽  
Initial Errors

Simple model-free attitude control design for flexible spacecraft with prescribed performance

2018 ◽  
Vol 233 (8) ◽  
pp. 2760-2771 ◽  
Author(s):  
Chao Zhang ◽  
Guangfu Ma ◽  
Yanchao Sun ◽  
Chuanjiang Li
Keyword(s):  
Control System ◽  
Attitude Control ◽  
Control Design ◽  
Relevant Information ◽  
Tracking Accuracy ◽  
Attitude Control System ◽  
Prescribed Performance ◽  
Control Approach ◽  
Model Free ◽  
Flexible Vibrations

In this paper, a model-free attitude control approach is proposed for the spacecraft in the presence of external disturbances and flexible vibrations with both complexity and performance concerns. By utilizing prescribed performance and backstepping techniques, the controller is constructed in a simple form without requiring any relevant information of the attitude control system dynamics. Moreover, fuzzy/neural network approximations, observers, or adaptive laws are not adopted into the control design, so that the related problems introduced by these estimation structures can be avoided. Numerical simulations in different cases show that the control system can obtain quick and smooth dynamic process and expected tracking accuracy despite the influence of disturbances and flexible vibrations, which demonstrates the effectiveness of the proposed scheme. Owing to the above good features, it is suitable for practical engineering.

scholarly journals Fixed-Time Fuzzy Adaptive Fault-Tolerant Control for Hypersonic Flight Vehicles Using a New Prescribed Performance Function

2021 ◽  
Author(s):  
Zehong Dong ◽  
Yinghui Li ◽  
Maolong Lv ◽  
Ju Park ◽  
Dingshan Sun
Keyword(s):  
Fault Tolerant ◽  
Fractional Power ◽  
Fault Tolerant Control ◽  
Fixed Time ◽  
Performance Function ◽  
Prescribed Performance ◽  
Hypersonic Flight ◽  
Flight Vehicles ◽  
Uncertain Dynamics ◽  
Fuzzy Adaptive

Abstract This article proposes a new fixed-time fuzzy adaptive fault-tolerant control methodology for the longitudinal dynamics of hypersonic flight vehicles (HFVs) in the presence of actuator faults, uncertain dynamics and external disturbances. In contrast with the conventional fixed-time control schemes that typically contain the fractional powers of errors in their designs, this work develops a low-complexity control structure in the sense of removing the dependence on the need of above-mentioned fractional power terms by means of prescribed performance control (PPC) method. Different from the most existing PPC approaches where the initial conditions of tracking errors are required to be known, the newly proposed prescribed performance function (PPF) can relax such restrictions through choosing properly small initial values of PPF. Fuzzy logic systems (FLSs) are employed to handle unknown dynamics and minimal learning parameter (MLP) technique is incorporated into the design for the purpose of alleviating computation burden. Closed-loop stability is rigorously proved via Lyapunov stability theory and simulation results are eventually given to validate the effectiveness of the proposed control strategy.

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