کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5004136 1461187 2017 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Research articleCoupled-disturbance-observer-based position tracking control for a cascade electro-hydraulic system
ترجمه فارسی عنوان
تحقیق مقاله کنترل ردیابی موقعیت مبتنی بر اختلال ناظر مبتنی بر مشاهدات برای یک سیستم الکترو هیدرولیک آبشار
کلمات کلیدی
سیستم الکترو هیدرولیک کنترل کننده آبشار، ناظر ناگوار همراه، بازوی رباتیک دو درجه آزادی،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی کنترل و سیستم های مهندسی
چکیده انگلیسی


- Based on the external load characteristic of multi-dof manipulator fully-actuated by n electro-hydraulic actuators, a nth order cascade EHS is concerned.
- A state feedback control of the cascade EHS based on a coupled disturbance observer (CDOB) with backstepping.
- The cascade controller has the ability to compensate the disturbance estimation, as well as guarantee the system state error convergence to a prescribed steady state level.
- The effectiveness of the proposed controller has been demonstrated on 2-DOFrobotic arm comparison with the other 2 traditional control strategies.

The disturbance suppression is one of the most common control problems in electro-hydraulic systems. especially largely an unknown disturbance often obviously degrades the dynamic performance by biasing the desired actuator outputs (e.g., load forces or torques). In order to reject the dynamic disturbances in some multi-degree-of-freedom manipulators driven by electro-hydraulic actuators, this paper proposes a state feedback control of the cascade electro-hydraulic system based on a coupled disturbance observer with backstepping. The coupled disturbance observer is designed to estimate both the independent element and the coupled element of the external loads on each electro-hydraulic actuator. The cascade controller has the ability to compensate for the disturbance estimating, as well as guarantees the system state error convergence to a prescribed steady state level. The effectiveness of the proposed controller for the suppression of largely unknown disturbances has been demonstrated by comparative study, which implies the proposed approach can achieve better dynamic performance on the motion control of Two-Degree-of-Freedom robotic arm.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: ISA Transactions - Volume 68, May 2017, Pages 367-380
نویسندگان
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