Method and the circuit device which proofread the voltage deviation and temperature deviation of active current of the hydraulic valve of PWM control

摘要

As for this invention, the active current in electric current controlling of pulse duration modulation system for the especially electronic type automobile brake operating unit (I _RMS) with measurement electric current (I _mess) with it regards the method of making deviation small. In this case, measurement electric current (I _mess) control period (t _PWM) is detected at the specified point in time when the inside is set, temperature and/or the revision with the correction value which depends on supply voltage is done, this correction value is added measurement electric current (I _mess), the target electric current which was corrected with that (I _soll) is offered for electric current control. It regards the circuit device in order this invention furthermore has the circuit in order PWM to control, load current to control plural induction loads. In this case, the method due to this invention, is executed inside the micro-computer or micro-computer system which is connected to the PWM circuit electrically as the program.