Verfahren und Vorrichtung zur Bestimmung der dynamischen Masse un der mittleren Reibkraft einer Aufzugstüre

摘要

A method for controlling a sliding door system determines the masses and the frictional forces of all movably interconnected parts of the sliding door system. The system has a door leaf which is moved in an opening learning travel and a closing learning travel and guided without drive over respective first and second test sections. First and second energy balances are determined from the detected speed and distance travelled data of the first and second test sections respectively. The energy balances equate the kinetic energy at the beginning of a test section with the kinetic energy at the end of the test section plus the frictional energy plus the potential energy of a closing weight connected to the door leaf. The potential energy is added with a positive sign for opening travel and a negative sign for closing travel. The dynamic mass and the mean frictional force of the sliding door system can then be determined from the first and second energy balances. An apparatus for controlling the door motor in accordance with the method includes a microprocessor in a door drive with a memory for storing the speeds and distances associated with the learning travels. The microprocessor and the tachometer detect, store and process the speed and distance data, and the microprocessor determines the values for the dynamic mass and the mean frictional force and also the closing speed, which is the maximum permissible for safe operation of the door.