发明名称 |
Linear actuator control structure |
摘要 |
A control system for a linear actuator having an electric motor drawing a variable current level during operation. The control system includes a current level sensor for determining an operational current level of the linear actuator and a controller for generating a drive signal and a force request signal representative of a desired current level of the linear actuator. The drive signal remains constant during a predetermined time interval of the controller. The control system further includes a current limiting component for receiving the force request signal, the current level of the linear actuator and the drive signal. The current limiting component minimizes the current level of the electric motor in response to a comparison between the force request signal and the desired current level within a time interval substantially smaller than the predetermined time interval of the controller.
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申请公布号 |
US6614195(B2) |
申请公布日期 |
2003.09.02 |
申请号 |
US20010851831 |
申请日期 |
2001.05.09 |
申请人 |
TENNANT COMPANY |
发明人 |
BUSHEY BRUCE;ERKO ROBERT;HAEG JOHN;MILUN RICHARD;SCHWARTZ TERRY |
分类号 |
A47L11/40;H02P25/06;(IPC1-7):H02P7/36 |
主分类号 |
A47L11/40 |
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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