CAJ | 학술논문

为了提高行波型旋转超声电机速度稳定性,分析现有双轴承支撑情况下,加工和装配误差对速度稳定性的影响,认为沿圆周压力不均衡是造成速度波动的主要原因之一。提出了单轴承支撑附加调心结构的方案,使接触界面实现压力自平衡。理论和实验分析表明,这种方案使接触界面的压力分布更加均匀,速度稳定性更好。实验结果表明,与原结构对比,在超声电机输出力矩、速度范围等主要性能指标基本一致的情况下,超声电机的空载速度波动率降低了约40.0%,波动范围达到2.0%以内。
위료제고행파형선전초성전궤속도은정성,분석현유쌍축승지탱정황하,가공화장배오차대속도은정성적영향,인위연원주압력불균형시조성속도파동적주요원인지일。제출료단축승지탱부가조심결구적방안,사접촉계면실현압력자평형。이론화실험분석표명,저충방안사접촉계면적압력분포경가균균,속도은정성경호。실험결과표명,여원결구대비,재초성전궤수출력구、속도범위등주요성능지표기본일치적정황하,초성전궤적공재속도파동솔강저료약40.0%,파동범위체도2.0%이내。
Aim at improving the velocity fluctuation ratio of traveling wave type rotary ultrasonic motor（TRUM）,this paper analyzes the impact of matching or assembly error in the present case of duplex bearing structure.The results show that one of the main reasons for velocity fluctuation of TRUM is pressure imbalance along the circumference.A scheme to realize pressure auto-balance with single bearing and self-aligning structure was proposed.Theoretical and experimental analysis shows that the approach makes the contact interface more uniform pressure distribution,and speed stability better.Comparing with the original structure,the main key performance indicators,such as output torque and velocity range,are basically the same,and the experimental result indicates that the no-load velocity fluctuation ratio decreased 40.0%,and velocity fluctuation range reaches within ？2.0%.