Arrangement and a process for controlling a starting device of a vehicle drive

A control arrangement for a driving engine and a starting device connected behind said driving engine, comprising:

• a first generator for outputting a position of a power control element of the driving engine;
• a second generator for outputting an input rotational speed signal of the starting device;
• a third generator for outputting an output rotational speed signal of the starting device;
• a difference forming device coupled to the second and third generators for determining a rotational speed difference signal as a difference between the input rotational speed signal and the output rotational speed signal;
• a first characteristic curve converter coupled to the first generator for determining a desired rotational speed as a function of the signal of the first generator;
• a first control device which, in a first phase of the starting operation, generates a difference actuating signal in such a manner that the input rotational speed signal is led to the desired rotational speed signal and in a second phase, generates the difference actuating signal in such a manner that the rotational speed difference signal changes at a rate which is a function of the size of the rotational speed difference signal;
• a second characteristic curve converter coupled to the first generator for determining a first actuating signal as a function of the position of the power control element, the input rotational speed signal and the desired rotational speed;
• a second control device for determining a second actuating signal from the first actuating signal and an application actuating signal;
• and
• an actuating device which controls the starting device so as to vary the input and output rotational speed signals, said actuating device controlling the starting device according to the sum of the second actuating signal and the difference actuating signal.