Patent ID: 6870339

Claim:
A method for operating an electrical drive unit, wherein anti-jamming protection is realized by comparing an excess force (F O ) defined as the difference between a driving force (F A ) and a friction force (F R ), with a trigger threshold value (F S ), comprising the following steps: a) comparing a characteristic curve of said friction force (F R ), which depends on an operating distance (s) of the electrical drive unit, of a present driving operation (BV 1 ) with at least one characteristic curve of a friction force (F R ) of a past driving operation (BV 2 . . . BVn), b) and varying said trigger threshold value (F S ) in response to the conformity between the characteristic curve of the friction force (F R ) of the present driving operation (BV 1 ) and at least one past driving operation (BV 2 .. . BVn).