一个球形悬挂三度自由度的压电球形电机的模型和属性分析
Zhenyu Wang1,2, Jun Li2, Wanbing Liu3
1School of Mechanical Engineering, Hangzhou Dianzi University Information Engineering College, Hangzhou 311305, China.
Sensors (Basel, Switzerland)
|March 13, 2024
概括
一个新的球式压电球形电机设计克服了传统模型的局限性. 这种新结构提供了改进的扭矩和转速特性,对于先进的机器人和机械电子应用至关重要.
科学领域:
- 机器人和机械电子学
- 材料科学与工程 材料科学与工程
- 机械工程 机械工程
背景情况:
- 多度自由度的压电电机因高扭矩,分辨率和直接驱动能力而在机器人,深海,医疗和太空机制中至关重要.
- 传统的移动波压电球电机面临着高力/扭矩合和低稳定器-旋转器粘合强度的挑战.
研究的目的:
- 提出和分析一个新的球杆压电球形电机结构.
- 为了解决现有的压电球形电机设计的局限性,特别是力/扭矩合和粘合强度.
- 为压电球形电机的驱动控制提供理论基础.
主要方法:
- 使用坐标转换和力分析开发一个驱动数学模型.
- 基于衍生的数学模型进行计算机模拟,以分析机械性能.
- 研究电机性能参数 (扭矩,转速) 与物理属性 (摩擦系数,预负载,半径) 之间的关系.
主要成果:
- 拟议的模型证实了电机的三个自由度之间的相互合.
- 停滞扭矩系数表现出对摩擦系数和定子预负荷的线性依赖,以及对定子和转子半径的非线性依赖.
- 无负荷速度独立于摩擦系数和定子预负荷,但根据定子和转子半径不线性变化.
- 分析了扭矩和转速的异型特征.
结论:
- 新的球式压电球形电机设计提供了一个可行的解决方案,以克服传统设计的缺点.
- 数学模型和模拟结果为电机的性能依赖提供了关键的见解.
- 这项研究为在苛刻的应用中对压电球形电机的先进驱动控制奠定了基础的理论框架.
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