Presentation Details
Research on Anti-Shock Control of Magneto-Rheological Damper and Hydraulic Actuator with Impedance–Resistance Coupling
ID：88
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Updated Time：2023-04-03 13:20:51 Hits：1314
Oral Presentation
Start Time：2023-06-09 16:40（Asia/Shanghai）
Duration：15min
Session：S1 Concurrent Session 1 »
Abstract
Abstract：The sudden change of external load on hydraulic actuator produces shock vibration that decreases the service life of components and systems. Magnetorheological fluid offers fast response and controllable damping, which can improve the under-damped characteristics of valve-controlled cylinders. Using the new hydraulic damping actuator as the research object, this study aims to solve the problem of the complicated and inverse-unfindable model that cannot frequently reverse the hydraulic actuator, by establishing an accurate and efficient dynamic model, and realizes the coupling of magnetorheological damper(MRD) and hydraulic actuator. Firstly, based on the crystal plastic slip phenomenon under the cyclic constitutive model and the saturation characteristics of MRD, the hyperbolic tangent curve is modified to propose the improved hyperbolic tangent model. Genetic algorithm is then applied to establish the relationship between various parameters and the current, and the correctness of the model is verified by mechanical experimental data. Next, different inverse dynamic models are established using adaptive neuro-fuzzy technique and direct segmentation backpropagation method respectively, and the accuracy of the inverse model is validated by the output data of the positive model. Meanwhile, the impedance characteristic of the hydraulic actuator is analyzed when the load is suddenly changed or the displacement overshoot. Based on the directional characteristics of velocity and impedance force, the impedance-resistance coupling of the hydraulic actuator and the damper is achieved to reduce the displacement error of the hydraulic actuator during motion. Finally, drop hammer impact experiment is conducted to verify that the impedance-resistance coupled hydraulic damping actuator exhibits the anti-shock effect of fast response speed and low displacement error.
Keywords
under-damped characteristics,cyclic constitutive model,hyperbolic tangent model,parameter identification,impedance-resistance coupling
Speaker
Baizhou Ma
Master students Fuzhou University；School of Mechanical Engineering and Automation Fuzhou University, Fuzhou 350108；Key Laboratory of Fluid Power and Intelligent Electro-Hydraulic Control (Fuzhou University) Fujian Province University Fuzhou 350108Submission Author
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Important Date
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Conference Date
Jun 09
2023
toJun 12
2023
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Mar 15 2023
Abstract Notification of Acceptance
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Mar 31 2023
Abstract Submission Deadline
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Jun 12 2023
Registration deadline
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Sep 20 2023
Draft paper submission deadline
Sponsored By
Chongqing University
University of Science and Technology of China
University of Science and Technology of China
Contact Information
- Registration/Event Questions
- er******@cqu.edu.cn
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