发明名称 |
Proportional integral fan controller for computer |
摘要 |
A controller drives a fan's motor to proportionally control fan speed based on changes in heat output from electrical components in a local environment. The controller is connected to a temperature sensor and the fan motor. The temperature sensor senses local environment temperature, while exhibiting a lag time. The controller provides closed loop control and implements a system pole which cancels out the temperature sensor lag time during steady state operations. The controller implements an integration of a difference between sensed temperature and a reference temperature to generate the system pole.
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申请公布号 |
US5929581(A) |
申请公布日期 |
1999.07.27 |
申请号 |
US19970955478 |
申请日期 |
1997.10.22 |
申请人 |
HEWLETT-PACKARD COMPANY |
发明人 |
VAN BROCKLIN, ANDREW L.;BAUSCH, JAMES F. |
分类号 |
G06F1/20;G06F11/30;H05K7/20;(IPC1-7):H02P7/00 |
主分类号 |
G06F1/20 |
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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