发明名称 |
Stepper motor door control apparatus and method |
摘要 |
A door movement control apparatus and method are provided for opening and closing door apparatus with a stepper motor supplied control pulses in response to a command signal indicating the desired movement direction. A table of time delays for the respective control pulses and resulting motor steps provides a desired speed pattern for the door movement. A comparison of the number of motor steps taken with the number of control pulses provided is made to determine when a closing door is obstructed.
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申请公布号 |
US4511832(A) |
申请公布日期 |
1985.04.16 |
申请号 |
US19840590109 |
申请日期 |
1984.03.19 |
申请人 |
WESTINGHOUSE ELECTRIC CORP. |
发明人 |
SCHMITZ, WILLIAM E. |
分类号 |
H02P8/14;E05F15/10;H02H7/085;H02P8/20;(IPC1-7):H02K29/04 |
主分类号 |
H02P8/14 |
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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