报告详情
Research on Anti-Shock Control of Magneto-Rheological Damper and Hydraulic Actuator with Impedance–Resistance Coupling
编号：88
访问权限：仅限参会人
更新：2023-04-03 13:20:51 浏览：964次
口头报告
报告开始：2023年06月09日 16:40（Asia/Shanghai）
报告时间：15min
所在会场：[S1] Concurrent Session 1 [S1-2] Concurrent Session 1-2 & 1-3
摘要
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.
关键词
under-damped characteristics,cyclic constitutive model,hyperbolic tangent model,parameter identification,impedance-resistance coupling
报告人
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 350108稿件作者
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重要日期
-
会议日期
06月09日
2023
至06月12日
2023
-
03月15日 2023
摘要录用通知日期
-
03月31日 2023
摘要截稿日期
-
06月12日 2023
注册截止日期
-
09月20日 2023
初稿截稿日期
主办单位
Chongqing University
University of Science and Technology of China
University of Science and Technology of China
联系方式
- Registration/Event Questions
- er******@cqu.edu.cn
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