在波形板轴向活塞的可变位移机制中的刚性补偿使用压电执行器的轴向活塞
Guangcheng Zhang1, Mengxiang Ma1, Yueh-Jaw Lin2
1School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.
Materials (Basel, Switzerland)
|February 13, 2025
概括
本研究介绍了一种新的电子控制球螺丝机制,使用压电陶在液压系统中补偿刚性. 这项创新大大降低了板振动,提高了系统的稳定性和性能.
科学领域:
- 机械工程 机械工程
- 液压系统 水力系统
- 材料科学 材料科学 材料科学
背景情况:
- 冲压板轴活塞在液压系统中至关重要,但由于流体动力学和机械因素,容易发生振动,影响系统性能.
- 现有的系统缺乏有效的方法来减轻横冲板振动,导致动态性能和运行稳定性降低.
研究的目的:
- 提出和研究一个电子控制的球螺丝可变位移机制,并集成硬度补偿.
- 通过减少板振动来提高液压系统的动态性能和工作稳定性.
主要方法:
- 开发一种电子控制的球螺丝机制,采用压电陶材料,用于动态硬度补偿.
- 建立双螺母球螺丝的刚度模型,以定义与压电陶的关系.
- 使用粒子群算法进行参数识别的非线性歇斯底里的不对称Buc-Wen压电执行器的建模.
- 应用一个压电驱动器模型与前反向模型和PID复合控制器用于度补偿.
主要成果:
- 在使用压电陶的可变位移机制中成功实现动态刚性补偿.
- 有效地改变板振动特征,从而显著改善系统工作稳定性.
- 拟议的刚性模型和具有非线性歇斯底里的压电驱动器模型的验证.
结论:
- 拟议的带有压电刚性补偿的电子控制的球螺丝机制有效地减轻了液压系统中的冲压板振动.
- 这种方法为增强轴向活塞的动态性能和操作稳定性提供了一个有希望的解决方案.
- 进一步的研究可以探索先进的控制策略和材料集成,以获得更大的性能收益.
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