发明名称 |
METHOD OF CONTROLLING A MOTORIZED WINDOW TREATMENT |
摘要 |
A method of controlling a motorized window treatment provides for continued operation of the motorized window treatment during an overload or low-line condition. The motorized window treatment is driven by an electronic drive unit having a motor, a motor drive circuit, and a controller. The controller controls the motor drive circuit to drive the motor with a pulse-width modulated signal generated from a bus voltage. The controller is operable to monitor the magnitude of the bus voltage. If the bus voltage drops below a first voltage threshold, the controller stops the motor or reduces the duty cycle of the pulse-width modulated signal to allow the bus voltage to increase to an acceptable magnitude. When the bus voltage rises above a second voltage threshold, the controller begins driving the motor normally once again. During an overload or low-line condition, the controller is prevented from resetting, while driving the motor with minimal interruption to the movement of the motorized window treatment. |
申请公布号 |
EP2137812(A1) |
申请公布日期 |
2009.12.30 |
申请号 |
EP20080745955 |
申请日期 |
2008.04.16 |
申请人 |
LUTRON ELECTRONICS COMPANY, INC. |
发明人 |
CARMEN, LAWRENCE, R. JR.;BRENNER, THOMAS, WARREN;LUNDY, STEPHEN |
分类号 |
H02P7/00;E06B9/68 |
主分类号 |
H02P7/00 |
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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