Solenoid valve`s control loop malfunction detection system for motor vehicle gearbox, has microcontroller to adjust voltage applied to valve, and to evaluate duty cycle of switch by forming valve model, for applying valve current to valve

摘要

The system has a regulator provided in a microcontroller (3) that adjusts the voltage applied to a solenoid valve, in an initial duty cycle of a switch (5). The microcontroller simultaneously evaluates another duty cycle of the switch, by forming a model of the solenoid valve, for applying the necessary valve current to the valve. A sensing ratio of the valve is based on an arithmetic function.