The subject of the proportional, 1984, for the heating and / or air conditioning a motor vehicle

摘要

A motor M determines the position of a hot-air and cold-air mixing valve. A microprocessor MP is actuated at a predetermined rate in order to determine, on each run, values desired for the direction of rotation, a number of working periods and a number of off periods of the motor, while counting the number of periods in progress. The control of the motor M is modified when the desired values do not correspond to the actual state of the motor, whilst the counting is returned to a starting value. IMAGE