Ford Motor Company Limited

Achim Haesters

Cornelius Peter

Bernd Dienhart

Joachim Waschkies

Angelika Peter, Legal Representative

Guido Lindeke

The subject of the present invention is a motor control system having a monitoring circuit for monitoring PWM control for a DC electric motor, the PWM control comprising a power end stage having at least one field effect transistor, which controls the current at the DC electric motor. The motor control system is designed to monitor the current at the DC electric motor. The motor control system detects the voltage drop across the field effect transistor and comprises a temperature sensor for detecting the temperature of the field effect transistor. Furthermore, the motor control system is designed to determine the resistance of the field effect transistor from the detected temperature thereof, and to determine the current at the DC electric motor from the resistance of the field effect transistor and from the voltage drop across the field effect transistor.

Motor control system for the PWM control of an electric motor

A hollow beam 2 includes provisions (12, 13, 14 and 15) to allow mounting a spacer sleeve or support body 6 in its intended location for insertion of a mounting bolt 5 from outside the beam 2. The sleeve (6) at least partially encompasses the mounting bolt 5 and is inserted through an access opening (11) into the hollow beam 2 and is subsequently positioned in registration with attachment holes and which recive the mounting bolt 5.

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Pulheim, Germany

Achim Haesters