#TITLE_ALTERNATIVE#

• Main Author: SULTHONI NIM : 13203019, HAFIDH
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/10534
• Institution: Institut Teknologi Bandung

<p align="justify">This final project focused on designing an Adaptive Cruise Control (ACC) System for Remote Control's (RC) car implementation. ACC System is an enhancement from the previous cruise control system which only maintains the set point. This system can adapt its speed to the traffic environment automatically. If the ACC System detects a slower vehicle moving in its front, it will reduce its velocity to maintain a safe clearance with the moving vehicle. If the vehicle is no longer detected, the velocity of the ACC system will be restored to its normal value. Speed control in the designed ACC system is implemented by controlling RC car's DC motor speed using PWM method. The ACC system uses a SONAR sensor to detect range between the vehicle and another vehicle in its front. The ranging measurement of the SONAR that is used in this system is 0-6.45 meters. For the speed sensor, the designed system uses encoder made from an optocoupler and rotary disc. The ACC system is also occupied by a selector so that the system still can be controlled manually using a remote control. Data processing, speed controlling and control mode determination are done using the program in microcontroller ATMega 8535. The RC car's maximum speed that is used in the designed system is 188 cm/s. From the evaluation, it can be concluded that the SONAR sensor is mostly effective for measuring close to medium (less than 4.6 meters) range. When the sensor is used for long range measurement, the result is fluctuating. The overall performance of designed ACC system is evaluated by simulating four conditions that might happen to the ACC's vehicle. The evaluation shows that the RC car can adapt its velocity base on the distance of the obstacle in front of it. When there's no obstacle in front of the car, the velocity will set to its normal value. When the ACC system detects any obstacle in front of it, the system starts to decrease its velocity. When the car gets closer and reaches less than 0.76 meters range with the obstacle, the car stops. And when the obstacle is no longer detected, the velocity will be increased to its normal value.