| 摘要 |
An anti-roll back device in a hybrid electric vehicle having an ABS is provided to reduce the manufacturing cost by performing PWM control of an anti-roll back valve through PWM output of a micro-control unit without installing an additional micro-control unit for the PWM control of the anti-roll back valve. An anti-roll back device in a hybrid electric vehicle having an ABS(Anti-lock Brake System) comprises a first driving circuit(13) for driving NO valves and a second driving circuit(14) for driving ARB(Anti-Roll Back) valves. A PWM(Pulse Width Modulation) signal switching unit(12) transmits a PWM signal for adjusting opening angles of the valves to one of the driving circuits according to a switching signal. An ECU(Electronic Control Unit,10) outputs the PWM signal and the switching signal. |
