PURPOSE: A control method and control apparatus of adaptive cruise control system for vehicles are provided to accurately follow wheel target pressure by calculating wheel target pressure during stop and compensating proportionately to gradient of road.;CONSTITUTION: A control method of adaptive cruise control system for vehicles comprises the following steps: determining slop of road by using wheel speed and vertical acceleration by a sensor part(220); calculating target torque in order to follow the proposed acceleration of the vehicles detected by the sensor unit(230); compensating the target torque calculated in accordance with gradient of the determined road; converting the compensated target torque into engine torque or brake pressure and sending the information to the engine control unit and a brake control unit(240); detecting needs of stop by a radar sensor; calculating wheel targeting pressure if the vehicle needs to be stopped; and transmitting the compensated wheel target pressure to the brake control unit after converting to brake pressure(260); and compensating the wheel target pressure calculated according to gradient of the determined road(270).;COPYRIGHT KIPO 2012
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