Method for monitoring the opening and closing process in a system having at least one component moved by electric motor

US5668451A · kind A · utility

Assignee

• Temic Telefunken Microelectronik · DE

Inventors

• Dieter Driendl · Deggenhausertal, DE
• Wolfgang Schulter · Meersburg, DE
• Ulrich Joos · Nonnenhorn, DE
• Manfred Fischer · Leichlingen, DE

Key dates

• Filing date: Nov 22, 1995
• Grant date: Sep 16, 1997
• Expiry date: Nov 22, 2015

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02H7/0851
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A method for monitoring the opening and closing process in a system having at least one component moved by electric motor is described. During this process, the following process steps are provided: PA1 during the movement of the components, all operating parameters of the motor are captured continuously at time-equidistant measuring moments, PA1 the energy balance developing during the movement is formed with the aid of the captured operating parameters of the motor, PA1 the total force resulting from the movement is determined from the energy balance and the design parameters of motor and gear, PA1 the trapping force is determined from the total force at each measuring moment with the aid of a time window whose window width is selected as time difference between the respective measuring moment and a respective reference moment such that, at least at one reference moment, a trapping force does not yet occur, PA1 the course of the trapping force as a function of time is evaluated and a trapping situation is detected when predetermined limit values or threshold values are exceeded, PA1 specific reactions are initiated when a trapping situation is recognized.