郭鑫星, 周瑾, 曹晓彦, 王运志. 半主动叶片式阻尼器的建模与实验研究[J]. 工程力学, 2022, 39(10): 227-237. DOI: 10.6052/j.issn.1000-4750.2021.06.0451
引用本文: 郭鑫星, 周瑾, 曹晓彦, 王运志. 半主动叶片式阻尼器的建模与实验研究[J]. 工程力学, 2022, 39(10): 227-237. DOI: 10.6052/j.issn.1000-4750.2021.06.0451
GUO Xin-xing, ZHOU Jin, CAO Xiao-yan, WANG Yun-zhi. MODELING AND EXPERIMENTAL STUDY OF A SEMI-ACTIVE BLADE DAMPER[J]. Engineering Mechanics, 2022, 39(10): 227-237. DOI: 10.6052/j.issn.1000-4750.2021.06.0451
Citation: GUO Xin-xing, ZHOU Jin, CAO Xiao-yan, WANG Yun-zhi. MODELING AND EXPERIMENTAL STUDY OF A SEMI-ACTIVE BLADE DAMPER[J]. Engineering Mechanics, 2022, 39(10): 227-237. DOI: 10.6052/j.issn.1000-4750.2021.06.0451

半主动叶片式阻尼器的建模与实验研究

MODELING AND EXPERIMENTAL STUDY OF A SEMI-ACTIVE BLADE DAMPER

  • 摘要: 叶片式阻尼器是一种新型的耗能装置,用于吸收能量和减小振动,以实现系统的结构保护。该文提出一种用于直升机操纵系统减振的半主动叶片式阻尼器,通过电机带动调整螺钉以改变阻尼间隙的大小,进而实现对阻尼力矩的控制。基于MTS试验机对该阻尼器进行示功试验并研究其动态特性。为准确地跟踪该阻尼器高度非线性的力学特性,提出一种改进的双曲正切模型,并采用修正的自适应遗传算法对模型进行参数辨识。通过仿真数据和试验数据之间的误差分析,得出结论:与其它两种现有模型相比,改进的双曲正切模型能够更精准地模拟阻尼器的出力特性;将模型参数与电机位置之间的关系用多项式整合后,模型在不同工况下仍能保持一定的精度,表明此模型可用于半主动控制。

     

    Abstract: Blade damper is a new type of energy dissipation device, which is used to absorb energy and reduce vibration to realize the protection of a structural system. A semi-active blade damper used for the vibration reduction of a helicopter control system is proposed. The motor drives the adjusting screw to change the size of the damping gap so as to control the damping torque. Based on MTS testing machine, the indicator test of the damper is carried out and its dynamic characteristics are studied. To accurately track the highly nonlinear mechanical characteristics of the damper, an improved hyperbolic tangent model is proposed, and the modified adaptive genetic algorithm is used to identify the parameters of the model. Through the error analysis between the simulation data and the test data, it is concluded that: compared with the other two existing models, the improved hyperbolic tangent model can more accurately simulate the force characteristics of the damper; after integrating the relationship between model parameters and motor position with polynomial, the model can still maintain a certain accuracy under different working conditions, which shows that the model can be used for semi-active control.

     

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