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超声电机推挽式驱动电路研究

更新时间:2020-10-20 01:42:30 大小:252K 上传用户:zhengdai查看TA发布的资源 标签:超声电机驱动电路 下载积分:2分 评价赚积分 (如何评价?) 打赏 收藏 评论(0) 举报

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由于超声电机需要幅值较高的驱动电压,因此其驱动电路需要变压器升压。电机为非线性容性负载,需要进行阻抗匹配,并保持电压和相移恒定。该文利用推挽电路作为驱动器拓扑,分析了驱动器在感性负载时的开关管损耗较容性负载时小,提高了驱动器效率和可靠性。并对串联电感匹配电路进行了改进,给出了LLCC谐振网络,并进行了Saber仿真分析,最后采用TRUM-60型超声电机进行了实验,结果证明了该方法的有效性。

High driven voltage is required for ultrasonic motor,so the driving circuit needs transformer to boost voltage.Since the USM is a nonlinear capacitive load,a matching circuit is needed to keep the output voltage and the phase shift constant.For the switching circuit with push-pull topology,the switching loss is less under inductive load rather than capacitive load,which will increase its efficiency and reliability.The matching circuit with series inductor was improved and a novel LLCC resonant network was proposed,which was simulated in Saber.This novel driver is applied to the TRUM-60 type ultrasonic motor,and the experimental results are presented to verify the effectiveness of the proposed circuit.

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超声电机推挽式驱动电路研究.pdf 252K

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