| 摘要 |
A pressure control method for a solenoid valve of a vehicle is provided to precisely control the solenoid valve by estimating a target pressure and a target current value of the solenoid valve based on an error value of pressure, and calculating a control current based on the target pressure and the target current value. A pressure control method for a solenoid valve of a vehicle includes: detecting the pressure of wheel cylinders through a pressure sensor of each wheel cylinder when a target pressure is set; estimating a control pressure as an error value by comparing detected pressures of the respective wheel cylinders with the target pressure when the pressures of the wheel cylinders are detected; estimating a driving pressure of an inlet solenoid valve by comparing the target pressure with the pressure of a master cylinder; estimating a target current value with respect to the driving pressure and a feedback current value with respect to the control pressure; and estimating a control current by adding the target current value and the feedback control current value in order for the PWM duty control. The PWM controlled value is fed back to the control current value in order to compensate the current changed due to the temperature increase. |
