Adjustment device for adjusting a relative rotational angle position of two shafts and method for operating an actuator, particularly of such an adjustment device

An adjusting device for adjusting a relative rotational angle position of a first shaft and a second shaft using an adjusting gear configured as a multi-shaft gear, comprising:

• a driving part connected to the first shaft;
• a driven part connected to the second shaft;
• an electric servomotor having a servomotor shaft and temperature sensor;
• and
• an adjusting shaft connected to the servomotor shaft of the electric servomotor in a rotationally fixed manner.

A method of temperature-dependent regulation of energization of an adjusting device for adjusting a relative rotational angle position of a first shaft and a second shaft using an adjusting gear configured as a multi-shaft gear, comprising a driving part connected to the first shaft;

• a driven part connected to the second shaft an electric servomotor having a servomotor shaft and temperature sensor;
• an adjusting shaft connected to the servomotor shaft of the electric servomotor in a rotationally fixed manner;
• and a control unit having a regulator for energizing the servomotor as a function of temperature determined by the temperature sensor, the method comprising the following steps:
• determining a temperature value in the adjusting device via the temperature sensor;
• comparing the temperature value with deposited temperature limit values, which distinguish different operation modes of the actuator from one another;
• and
• regulating a current or a pulse-duty factor of the servomotor as a function of a result of a comparison of the temperature value with the deposited temperature limit values to operate the actuator in the operation modes.