发明名称 |
Air damper operating system of vehicle air conditioners |
摘要 |
An air damper operating system for vehicle air conditioners with a plurality of ultrasonic motors. An oscillator circuit, phase shifter and feedback circuit control the frequency of an oscillator of a motor. A feedback signal transfer switch, position sensors and a time-division switching circuit operate the motors until they are rotated to predetermined positions.
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申请公布号 |
US5055750(A) |
申请公布日期 |
1991.10.08 |
申请号 |
US19900587849 |
申请日期 |
1990.09.25 |
申请人 |
ASMO CO., LTD. |
发明人 |
FUKUI, TAKASHI;KAWAI, HIRONOBU |
分类号 |
G05D13/62;H01L41/04;H02N2/14 |
主分类号 |
G05D13/62 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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