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Robust adaptive control

Xem 1-20 trên 27 kết quả Robust adaptive control
  • This present study proposes a design and the analysis of the novel adaptive robust neural networks (ARNNs) based on the backstepping control method for industrial robot manipulators (IRMs). In this research, the ARNNs controller has combined the advantages of Radial Basis Function neural network (RBFNN), the robust term, and adaptive backstepping control technique without the requirement of prior knowledge.

    pdf7p vigeneralmotors 13-07-2022 465 4   Download

  • In this paper, a robust hierarchical method for trajectory tracking control of a quadrotor unmanned aerial vehicle (UAV) subjected to parameter uncertainties and external disturbances is presented. A robust control scheme based on a fast nonsingular terminal sliding mode strategy is designed to achieve fast response and excellent tracking accuracy. Moreover, a radial basis function artificial neural network with online adaptive schemes to estimate unknown aerodynamic parameters and external disturbances is developed to improve the control performance and reduce the chattering phenomenon.

    pdf6p cothumenhmong11 05-05-2021 11 1   Download

  • In this present paper, the road profiles are generated according to the ISO 8606:2016 standard to compare the differential of the road profile when changing the conditions. The semi-active suspension techniques are the solution to this problem and capable of reducing road vibrations effectively. The vertical quarter car model is installed with semi-active suspension system using Electrorheological shock absorber (ER damper) also considered to study the response of the vehicle to the road profile.

    pdf6p kequaidan11 13-04-2021 17 0   Download

  • In this study, a combination of backstepping technique, double recurrent fuzzy wavelet based on neural networks (DRFWBONNs), adaptive sliding mode controller (ASMC), and adaptive proportional-integral (API) control with dead-zone friction is introduced to the industrial robot manipulator (IRM). Simulation results show the high performance of this control method when compared to adaptive-fuzzy (AF) and proportional-integral-derivative (PID) controller.

    pdf8p quenchua10 18-01-2021 18 0   Download

  • In this paper, the authors propose a novel adaptive multilayer T-S fuzzy controller (AMTFC) with a optimize soft computing algorithm for a class of robust control uncertain nonlinear SISO systems. First, a new multilayer T-S fuzzy was created by combined multiple simple T-S fuzzy model with a sum function in the output. The multi-layer fuzzy model used in nonlinear identification has many advantages over conventional fuzzy models, but it cannot be created by the writer's experience or the trial and error method. It can only be created using an optimization algorithm.

    pdf13p trinhthamhodang9 04-12-2020 6 0   Download

  • This work deals with the control design and development of an automated car-following strategy that further increases robustness to vehicle dynamics uncertainties. The control algorithm is applied on a hierarchical architecture where high and low level control layers are designed for gap-control and desired acceleration tracking, respectively. A fractional-order controller is proposed due to its flexible frequency shape, fulfilling more demanding design requirements.

    pdf9p dayhoctainha 10-09-2020 17 0   Download

  • This article highlights a robust adaptive tracking control approach for a nonholonomic wheeled mobile robot by which the bad problems of both unknown slippage and uncertainties are dealt with. The radial basis function neural network in this proposed controller assists unknown smooth nonlinear dynamic functions to be approximated. Furthermore, a technical solution is also carried out to avoid actuator saturation. The validity and efficiency of this novel controller, finally, are illustrated via comparative simulation results.

    pdf18p nguyenanhtuan_qb 18-06-2020 19 1   Download

  • This paper proposes a new modeling of a single-degree-of-freedom electrostatic suspension system working with large aspect ratio in which the fringing field is uncertain. Based on the model, an adaptive sliding mode control for position of the object is constructed. Robustness and global stability of the controller are proven by computer simulations of contactless suspension.

    pdf16p cleopatrahuynh 01-06-2020 7 1   Download

  • Antibiotic discs made by different manufacturers may vary in their working potencies for various reasons and this can affect implementing standard interpretative criteria for reporting susceptibility patterns for certain key antibiotics.

    pdf11p nguaconbaynhay3 07-02-2020 12 0   Download

  • TCP over wireless networks is challenging due to random losses and ACK interference. Although network coding schemes have been proposed to improve TCP robustness against extreme random losses, a critical problem still remains of DATA–ACK interference. To address this issue, we use inter-flow coding between DATA and ACK to reduce the number of transmissions among nodes. In addition, we also utilize a ‘‘pipeline’’ random linear coding scheme with adaptive redundancy to overcome high packet loss over unreliable links.

    pdf12p kethamoi1 20-11-2019 9 0   Download

  • This paper proposes an adaptive robust Fuzzy controller based on Backstepping scheme to solve with the model unknown and parameter disturbances for robot manipulator. In this research, the robust adaptive fuzzy system is combined with Backstepping design method to remove the matching condition requirement and to provide boundedness of tracking errors, even under dominant model uncertainties.

    pdf6p vicapital2711 02-08-2019 17 1   Download

  • The ANFIS is thus employed to eliminate the chattering and simultaneously the HTSS provides finite system-state convergence time. By combining HTSS with ANFIS, the DC-AC power converter of AMM will achieve robust performance. Experimental results are given to conform that the proposed technique can obtain low total harmonic distortion (THD) and fast transience even under phase-controlled loads.

    pdf5p praishy2 27-02-2019 25 2   Download

  • This paper has presented an adaptive fuzzy controller for permanent magnet synchronous motor. A rotor speed estimation based on sliding mode observer. Space-vector pulse width modulation was used for slipping frequency vector control system. The simulation architecture of system was implemented on Modelsim and Matlab/Simulink.

    pdf5p praishy2 27-02-2019 21 1   Download

  • The efficient and effective speed controllers can be designed by using adaptive control techniques. In which the conventional PI controller is replaced by structures based on Sliding Mode Control (SMC) strategy. SMC is known for its capability to cope with bounded disturbance as well as model imprecision which makes it ideal for the robust nonlinear control of IM drives.

    pdf8p girlsseek 27-02-2019 34 1   Download

  • In this paper, a Model Reference Adaptive Systems (MRAS) based an Adaptive System is proposed to a Twin Rotor MIMO System (TRMS). The TRMS is an open-loop unstable, nonlinear and multi output system.

    pdf6p blackwidow123 15-06-2018 26 2   Download

  • Direct MRAS offers a potential solution to reduce the tracking errors in the presence of uncertainties and variation in plant behavior. However, this control algorithm may fail to be robust to measurement noise. In order to solve this trouble, the indirect MRAS is introduced that permanently adjust the parameters of observers. The adaptive adjusting law is derived by applying Lyapunov theory. The adaptive algorithm that is shown in this paper is quite simple, robust and converges quickly. Performances of the controlled systems are studied through simulation in Matlab/Simulink environment.

    pdf7p doctorstrange1 15-06-2018 37 3   Download

  • This paper presents a control of active suspension system for quarter-car model with two-degree-of-freedom using H and nonlinear adaptive robust control method. Suspension dynamics is linear and treated by H method which guarantees the robustness of closed loop system under the presence of uncertainties and minimizes the effect of road disturbance to system.

    pdf9p sansan2 26-05-2018 46 3   Download

  • (bq) part 2 book "robotics and automation handbook" has contents: modeling and identification for robot motion control, robust and adaptive motion control of manipulators, modeling and identification for robot motion control, robot simulation, flexible robot arms,...and other contents.

    pdf304p bautroibinhyen20 06-03-2017 55 7   Download

  • (bq) part 2 book "crc press - robotics and automation handbook" has contents: modeling and identification for robot motion control, robust and adaptive motion control of manipulators, sliding mode control of robotic manipulators, impedance and interaction control, robot simulation,...and other contents.

    pdf304p bautroibinhyen19 24-02-2017 51 5   Download

  • Robot Manipulator Control offers a complete survey of control systems for serial-link robot arms and acknowledges how robotic device performance hinges upon a well-developed control system. Containing over 750 essential equations, this thoroughly up-to-date Second Edition, the book explicates theoretical and mathematical requisites for controls design and summarizes current techniques in computer simulation and implementation of controllers. It also addresses procedures and issues in computed-torque, robust, adaptive, neural network, and force control.

    pdf622p nvavan 08-05-2015 102 27   Download

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