Patent ID: 6086177
Filing Date: 2000-07-11
Classification: H02H

Abstract:
A process for controlling the closing movement of closing mechanisms with at least one electromotive part to guarantee squeeze protection including the steps of:continuously recording and evaluating measured values of at least one motor performance characteristic which characterizes the load on the electric motor;specifying a tripping threshold which defines a squeezing incident for each motor performance characteristic; andcomparing the measured value of the respective motor performance characteristic with each tripping threshold and if the tripping threshold is exceeded by at least one measured value, a defined reaction is initiated from the closing mechanisms,wherein, immediately after starting a closing movement, the step of determining starting behavior of the closing mechanism in a starting phase of the electric motor begins, the starting behavior is determined with regard to equalization of drive play and sluggislness of the closing mechanism with reference to the measured values relevant to the closing distance of at least one motor performance characteristic and includes the following sub-steps:activating squeeze protection in the starting phase to the response relevant to the closing distance of at least one motor performance characteristic when reaching an activation value relevant to the closing distance;after activation of squeeze protection in the starting phase, specifying an additional response relevant to the closing distance of at least one motor performance characteristic until uniform motion of the electromotive part is achieved, taking into consideration the measured values of at least one motor performance characteristic from previous and current closing movements; anddefining the tripping threshold of at least one motor performance characteristic relevant to the additional response.