Abstract:
In vehicle driving, speed control is vital because
of whether fast or slow driving may be collision,
accidences, delay and jam the traffic.
These types of cases can be reduced or eliminated
from the driving by using electronic control
technology. In this paper ultrasonic range finder
detects the distance between the vehicle and the
obstacle during driving and speed control is
depending on this detected distance. Pulse Width
Modulation (PWM) controls the voltage of the motor.
The duty cycle value (PWM) is calculated by fuzzy
logic control system based on detected distance and
current (PWM) duty value. The process of detection
distance and PWM output are controlled by
Microcontroller (PIC18F452). The detected distance
is less then 50 CM the vehicle will stop. The vehicle
can go only forward direction. The control strategy
is implemented by using MikroC language.
