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# Advanced Math/Automated Halt Mechanism on Brakes Failure.

Question
QUESTION: Dear Prof Randy

Is the following automated system can be designed and developed in a four wheeler i.e. Car, Jeep, Truck etc  ?.

Example :

Driver is driving the vehicle at 160 Km/Hr speed on a highway.
Suddenly he/she realizes that the brakes have failed now in this case the driver has to use his all driving skills to avoid collisions and accidents.

The Automated System designed will slowly and gradually halt/stop the automobile even in case of brakes failure.

Another way is "Prevention is better than cure". A instrument control Panel indicating the possibility of brakes wear and tear out.

Is it possible to automate the motion stop operation in event
of vehicle brakes failure ?

Thanks & Regards,
Prashant S Akerkar

ANSWER: I'm sure its possible to automatically implement an arresting process in the case of brake failure. The key would be in detecting the brake failure, which means in particular that the driver should have the ability to engage the system easily (push a button) if they detect a failure. The system should also be able to avoid accidental initiation.

The system would presumably implement various procedures to slow down the vehicle, mainly, I would think, involving the transmission, which could downshift appropriately.

I wouldn't be surprised if some car models already have a brake condition detection system.

---------- FOLLOW-UP ----------

QUESTION: Dear Prof Randy

Thank you.

Is it possible to automate the motion stop operation in event of vehicle brakes failure ?.

The 4 Wheeler engine stops working automatically when brakes fail resulting in stop / halt function but what about the speed ?.

Slowly and Gradually we have to slow down the vehicle. Otherwise applying brakes at 100 km/hr, 120 km/hr, 150 km/hr, 200 km/hr speed will result in ?.

The Driver's speed will vary from 40 km/hr, 60 km/hr, 80 km/hr, 100 km/hr, 120 km/hr, 150 km/hr, 200 km/hr etc

Thanks & Regards,
Prashant S Akerkar

Without brakes, you would want to use the engine inertia to slow down the car. Keeping the engine connected to the drive train will help slow the car since the cars momentum will be partly transferred to keeping the engine rotating and thus contributing drag. This is the reason for downshifting since its makes the engine spin faster.

Its hard to see how a manual transmission could be automatically be used. Despite its name, it may also be difficult to automatate the downshifting in an automatic transmission.
Questioner's Rating
 Rating(1-10) Knowledgeability = 10 Clarity of Response = 10 Politeness = 10 Comment Dear Prof Randy Thank you. Thanks & Regards, Prashant S Akerkar

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#### randy patton

##### Expertise

college mathematics, applied math, advanced calculus, complex analysis, linear and abstract algebra, probability theory, signal processing, undergraduate physics, physical oceanography

##### Experience

26 years as a professional scientist conducting academic quality research on mostly classified projects involving math/physics modeling and simulation, data analysis and signal processing, instrument development; often ocean related

Publications
J. Physical Oceanography, 1984 "A Numerical Model for Low-Frequency Equatorial Dynamics", with M. Cane

Education/Credentials
M.S. MIT Physical Oceanography, B.S. UC Berkeley Applied Math

Past/Present Clients
Also an Expert in Oceanography