发明名称 |
Method for overload protection of an actuator |
摘要 |
The method has the following steps: operating specific values of the positioning drive or its individual components are measured and recorded over time in a computer unit (28), the computer uses the values over a fixed time space to determine and monitor operating specific values and if the values exceed a threshold the computer initiates measured to protect the positioning drive and prevent its overloading. An Independent claim is included for a corresponding control device and a hydraulic positioning drive with a coupling, gear and controller. The controller monitors operating specific values, for example the temperature of an electric motor is determined from a thermal model, if the measured value exceeds the theoretical value by a threshold amount power supply to the motor can be interrupted. Cooling during the switched-off phase can be similarly modeled so that at a re-start the a new temperature value can be predicted that reflects the engine status. |
申请公布号 |
EP1227377(A2) |
申请公布日期 |
2002.07.31 |
申请号 |
EP20020000994 |
申请日期 |
2002.01.17 |
申请人 |
ZF SACHS AG |
发明人 |
JOHN, THOMAS, DIPL.-ING.;KUHN, THOMAS, DIPL.-ING.;ROMANOWSKI, RALF, DIPL.-ING. |
分类号 |
F15B19/00;F16D48/06;F16H61/28;G05B9/02;G05B23/02 |
主分类号 |
F15B19/00 |
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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