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
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