摘要
该文通过超声波电机的等效电路,提出了无变压器驱动的谐振升压式驱动电路。对该电路进行理论分析和PSPICE仿真后,得出输出电压同驱动占空比的关系近似为线性,同串联电感的平方根成反比,并通过实验对仿真结果进行了验证。应用此电路驱动定子直径为30mm的环形行波超声波电机,证明此电路在超声波电机的小功率驱动控制中具有实用性和可靠性。与目前通常采用变压器的超声波电机控制器相比,使用该电路装置的体积比原来至少可以减少1/3,重量减轻1/2,制作成本降低1/5,便于集成化生产。
Accompanying with the equivalent circuit of the ultrasonic motor (abbr. USM), this paper establishes a driving circuit using the resonant booster, which has no transformer included. The circuit is theoretically analyzed and verified by simulation through PSPICE software and experiments. The output voltage is almost linear proportional to the driving duty ratio and inversely proportional to the square root of the series inductance. The circuit is applied to the ring-type traveling-wave ultrasonic motor, of which stators diameter is 30mm. It is proved that this circuit is both feasible and reliable for the drive and control of small-power USM. Compared with the traditional controller of USM that has transformers, the driving device can be reduced by one-third in volume, one-half in weight and one-fifth in cost at least. It抯 easier for USM to realize production into integration.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2002年第8期49-52,共4页
Proceedings of the CSEE
基金
国家自然科学基金资助项目50047021
江苏省教育厅高科技产业化项目(JH01-007)
南通市科委资助项目
关键词
超声波电机
谐振
升压式驱动技术
等效电路
ultrasonic motors
resonance booster
equiva-lent circuit
duty ratio
