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BRUSHLESS DC MOTOR STARTS FOR A BARRIER FREE MEDICAL TABLE
专利权人:
Chris Jones
发明人:
Chris Jones,Rodney Hyre
申请号:
US12878321
公开号:
US20120062011A1
申请日:
2010.09.09
申请国别(地区):
US
年份:
2012
代理人:
摘要:
A boot-strap capacitor pre-charge algorithm prevents unwanted motions in an examination table using a brushless direct current motor. The motor is supplied with power by a motor drive circuit which includes a high-side transistor coupled to a high-side gate driver, a low-side transistor coupled to a low-side gate driver, and a boot-strap capacitor coupled with the high-side gate driver. A control panel is provided that communicates with a motor controller. When the motor controller receives an indication that the motor is to be started, the motor controller activates a low-side gate driver to switch on the low-side transistor, thereby causing the boot-strap capacitor to charge. The motor controller then deactivates the low-side gate driver to switch off the low-side transistor and activates the high-side gate driver to switch on the high-side transistor, causing a voltage to be supplied to a stator of the first motor and/or second motor.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/
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