Levitation Control of a Planar Magnetic Levitation Stage Based on Improved Auto-Disturbance Rejection Controller

Zhou, Zhixiong; Qu, Yong; Liu, De Jun

doi:10.4028/www.scientific.net/amr.662.823

Cited by 4 publications

(3 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Zhou et al . confirmed that this type of non‐smooth characteristic could easily cause a chattering phenomenon in a system's response. Therefore, in order to avoid this undesired chattering, a new nonlinear function, which was defined by nfal ( e ′( k ), c , b , γ ) , was adopted to replace fal ( e ′( k ), a , δ ) :

({, \begin{array}{l} italicnfal ((),,,, e' ((), k), c, b, γ) = b arc tan \frac{c ((), e' ((), k) - γ) - μ_{0}}{π / 2 - μ_{0}} \\ μ_{0} = arc tan ((), c ((), 0 - γ)) \end{array})

…”

Section: Positioning Controller Designmentioning

confidence: 76%

An Extended State Observer Based Fractional Order Sliding‐Mode Control for a Novel Electro‐Hydraulic Servo System with Iso‐Actuation Balancing and Positioning

Gao

Hou

Liu³

et al. 2018

Asian Journal of Control

View full text Add to dashboard Cite

An extended state observer based fractional order sliding-mode control (ESO-FOSMC) is proposed in this study, with consideration of the strong nonlinear characteristics of a new electro-hydraulic servo system with iso-actuation balancing and positioning. By adopting the fractional order calculus theory, a fractional order proportional-integral-derivative (PID)based sliding mode surface was designed, which has the ability to obtain an equivalent positioning control with fractional order kinetic characteristics. By introducing the integral term into the sliding mode surface, it was found to be beneficial in reducing the steady-state errors, as well as improving the precision of the control system. Also, by using the fractional order calculus to replace the integral calculus, the form of the convergence is improved; the system transfer of energy is slowed down; and the chattering of the system is greatly weakened. The extended state observer was designed to observe the real-time disturbances, and also to generate the compensation control commands which are added to the FOSMC to achieve the dynamic compensation. By means of numerical simulations, the dynamic and static characteristics of the sliding mode control system were compared with those of the FOSMC and ESO-FOSMC. The experimental results show that the ESO-FOSMC system could effectively restrain the external disturbances and achieve higher control precision, as well as better control quantity without chattering. The semi-physical simulations based experimental tests also demonstrated that the proposed ESO-FOSMC outperformed the FOSMC in terms of system robustness and control precision, which could have a stable control of the gun system quickly and accurately.

show abstract

({, \begin{array}{l} italicnfal ((),,,, e' ((), k), c, b, γ) = b arc tan \frac{c ((), e' ((), k) - γ) - μ_{0}}{π / 2 - μ_{0}} \\ μ_{0} = arc tan ((), c ((), 0 - γ)) \end{array})

…”

Section: Positioning Controller Designmentioning

confidence: 76%

An Extended State Observer Based Fractional Order Sliding‐Mode Control for a Novel Electro‐Hydraulic Servo System with Iso‐Actuation Balancing and Positioning

Gao

Hou

Liu³

et al. 2018

Asian Journal of Control

View full text Add to dashboard Cite

show abstract

“…It has been pointed out and proven by Zhou et al [26][27][28] that such unsmooth characteristics may easily cause the chatter phenomenon of system responses. Therefore, a new nonlinear function for replacing the fal(e 0 (k), a, d) is defined in this study as nfal(e 0 (k), c, b, g) 27,28…”

Section: Esomentioning

confidence: 99%

“…When equation (22) is used to process the estimation, the nonlinear function fal(e 0 (k), a, d) is adopted with the following characteristics: in case of small deviation, the gain will be large; while in case of large deviation, the gain will be small. It has been pointed out and proven by Zhou et al [26][27][28] that such unsmooth characteristics may easily cause the chatter phenomenon of system responses. Therefore, a new nonlinear function for replacing the fal(e 0 (k), a, d) is defined in this study as…”

Section: Positioning Controllermentioning

confidence: 99%

Extended state observer–based fractional order proportional–integral–derivative controller for a novel electro-hydraulic servo system with iso-actuation balancing and positioning

Gao

Hou

Deng³

et al. 2015

Advances in Mechanical Engineering

View full text Add to dashboard Cite

Aiming at balancing and positioning of a new electro-hydraulic servo system with iso-actuation configuration, an extended state observer-based fractional order proportional-integral-derivative controller is proposed in this study. To meet the lightweight requirements of heavy barrel weapons with large diameters, an electro-hydraulic servo system with a three-chamber hydraulic cylinder is especially designed. In the electro-hydraulic servo system, the balance chamber of the hydraulic cylinder is used to realize active balancing of the unbalanced forces, while the driving chambers consisting of the upper and lower chambers are adopted for barrel positioning and dynamic compensation of external disturbances. Compared with conventional proportional-integral-derivative controllers, the fractional order proportional-integralderivative possesses another two adjustable parameters by expanding integer order to arbitrary order calculus, resulting in more flexibility and stronger robustness of the control system. To better compensate for strong external disturbances and system nonlinearities, the extended state observer strategy is further introduced to the fractional order proportional-integral-derivative control system. Numerical simulation and bench test indicate that the extended state observer-based fractional order proportional-integral-derivative significantly outperforms proportional-integral-derivative and fractional order proportional-integral-derivative control systems with better control accuracy and higher system robustness, well demonstrating the feasibility and effectiveness of the proposed extended state observer-based fractional order proportional-integral-derivative control strategy. KeywordsElectro-hydraulic servo system, iso-actuation balancing and positioning, fractional order proportional-integral-derivative, extended state observer Date

show abstract

Fuzzy-based gain scheduling of Exact FeedForward Linearization control and sliding mode control for magnetic ball levitation system: A comparative study

Lashin

Elgammal

Ramadan

et al. 2014

2014 IEEE International Conference on Automation, Quality and Testing, Robotics

View full text Add to dashboard Cite

Levitation Control of a Planar Magnetic Levitation Stage Based on Improved Auto-Disturbance Rejection Controller

Cited by 4 publications

References 2 publications

An Extended State Observer Based Fractional Order Sliding‐Mode Control for a Novel Electro‐Hydraulic Servo System with Iso‐Actuation Balancing and Positioning

An Extended State Observer Based Fractional Order Sliding‐Mode Control for a Novel Electro‐Hydraulic Servo System with Iso‐Actuation Balancing and Positioning

Extended state observer–based fractional order proportional–integral–derivative controller for a novel electro-hydraulic servo system with iso-actuation balancing and positioning

Fuzzy-based gain scheduling of Exact FeedForward Linearization control and sliding mode control for magnetic ball levitation system: A comparative study

Contact Info

Product

Resources

About