adaptive cruise control system

Not open for further replies.

Thread Starter


Joined Apr 27, 2015
Hi, im new to the forum. I came across it and im not sure if this is the appropriate place to get help on this but ill go for it :) im designing an adaptive cruise control system.
There are 3 states in the system.

Off-system is disabled and inactive

Standby-system is enable and inactive, waiting for driver to activate ACC

On-system is active

There are 2 factors in the ON state. Time gap and speed control. In time gap, the speed of the vehicle will be determined based on a gap between a vehicle and the one in front of it. The speed control works the same as any cars speed control.

The states are



S2-speed control

S3-time gap

Standby and active are considered to be enabled which is logic high and disable is logic low.
this the general state machine i came up with showing the states. I need help determining the input ouputs for the state transition. I have to get this done by tonight hopefully. Thanks!



Joined Aug 23, 2012
Welcome to the AAC forum.

The owners of All About Circuits has elected not to host discussions of automotive electrical system modifications/enhancements due to safety concerns, the potential of legal ramifications and the possible circumvention of vehicle regulations at the state and federal level.

This thread is against the AAC forum rules, Terms of Service (ToS).

Any kind of over-unity devices and systems
Automotive modifications
Devices designed to electrocute or shock another person
LEDs to mains
Phone jammers
Rail guns and high-energy projectile devices
Transformer-less power supplies
Terms of Service (ToS).

Automotive modifications of any kind are strictly forbidden. Therefore, this thread will be closed.

Please try to understand the reasons behind this action, and feel free to browse and use the forums.

You might find answers to your questions in one of these forums:

Another good forum that shares many of the same membership is .

Good luck.
Not open for further replies.