Electronic controlled suspension apparatus and vehicle height control method thereof

A vehicle height control method of an electronic controlled suspension apparatus, which includes a plurality of vehicle height sensors for measuring height of a vehicle, a vehicle height adjusting actuator operated for adjusting the height of the vehicle, and air springs controlled by the vehicle height adjusting actuator, the method comprising the steps of:

• receiving vehicle height signals from the vehicle height sensors;
• calculating a height difference value between the left and right sides of the vehicle according to the received vehicle height signals;
• and
• determining that the vehicle is turning if the calculated height difference value between the left and right sides of the vehicle exceeds a reference value;
• determining that the vehicle travels straight if the calculated height difference value between the left and right sides of the vehicle does not exceed the reference value;
• stopping operation of the vehicle height adjusting actuator when it is determined that the vehicle is turning;
• and
• operating the vehicle height adjusting actuator when it is determined that the vehicle is traveling straight.

An electronic controlled suspension apparatus, comprising:

• a plurality of vehicle height sensors configured to calculate a height of a vehicle;
• a vehicle height adjusting actuator configured to adjust the height of the vehicle;
• air springs controlled by the vehicle height adjusting actuator;
• an electronic controlled unit configured to calculate a height difference value between the left and right sides of the vehicle based on vehicle height signals received from the vehicle height sensors and to determine whether to operate or stop the vehicle height adjusting actuator through a comparison of the calculated height difference value between the left and right sides of the vehicle with a reference value and based on a measured duration after a turn;
• and
• a counter configured to measure a duration from when the vehicle begins to travel straight after a turning condition in which the height difference value between the left and right sides of the vehicle becomes larger than the reference value, the electronic control unit being configured to block operation of the vehicle height adjusting actuator until after the duration measured by the counter exceeds a selected duration.

A vehicle height control method of an electronic controlled suspension apparatus, which includes a plurality of vehicle height sensors for measuring height of a vehicle, a vehicle height adjusting actuator operated for adjusting the height of the vehicle, and air springs controlled by the vehicle height adjusting actuator, the method comprising the steps of:

• receiving vehicle height signals from the vehicle height sensors;
• calculating a height difference value between the left and right sides of the vehicle according to the received vehicle height signals;
• determining whether to operate or stop the vehicle height adjusting actuator through comparison of the calculated height difference value between the left and right sides of the vehicle with a reference value;
• and
• counting time from when the vehicle begins to travel straight after a turning condition in which the height difference value between the left and right sides of the vehicle becomes larger than the reference value;
• and
• operating the vehicle height adjusting actuator according to a control signal for adjusting vehicle height after the counted time exceeds a threshold time period.