VEHICLES SUCH AS TRUCKS, BUSES AND CARS OFTEN GET STRUCK UP IN MUDDY TRACK OR IN SNOW OR ANY UNREGULATED ROADS WITH ONE OF WHEELS IN THE LOOSE SOIL TRACK AND THE OTHER ON LEVEL HARD GROUND. WITH AN OPEN DIFFERENTIAL, DRIVER’S EFFORT TO PULL THE VEHICLE OUT NORMALLY ENDS UP WITH ONE WHEEL, WHICH IS ROTATING STILL GOING DEEPER INTO THE SOIL SURFACE. UNTIL NOW LIMITED SLIP DIFFERENTIALS (LSD), LOCKED DIFFERENTIALS, TORSEN (TORQUE SENSING) DIFFERENTIALS AND VISCOUS COUPLING ETC. HAVE BEEN USED TO OVERCOME THIS DIFFICULTY BUT WITH LIMITED SUCCESS. ABS (ANTI LOCK BRAKE SYSTEM) AND TCS (TRACTION CONTROL SYSTEM) SYSTEMS ARE ALLOWABLE IN CASE OF ON ROAD VEHICLES BECAUSE THEY ARE DESIGNED TO WORK UP TO HIGH SPEEDS AND WITH SLIP RATIO RANGES FROM 15% TO 30 %, SO IT CANNOT BE USED FOR OFF-ROAD APPLICATIONS WHICH DON’T HAVE THIS HIGH SPEED OPERATION REQUIREMENTS AND OUT OF THESE SYSTEMS SLIP RATIO RANGE. SO, THESE SYSTEMS CANNOT BE USED FOR OFF-ROAD APPLICATIONS AND THUS THEY CANNOT BE A SUITABLE SOLUTION FOR THE SITUATION STATED ABOVE. AN AUTOMATIC CONTROL SYSTEM IS INTRODUCED AND INTEGRATED WITH A MULTI PLATE CLUTCH SYSTEM WITH SERVO CONTROL. THIS CONTROL TECHNIQUE IS COUNTED AS A NOVEL SOLUTION FOR THE PROBLEM OF AN OFF-ROAD VEHICLE TRACTION CONTROL SYSTEM. THE CONTROLLER IS DESIGNED TO ESTIMATE THE SPEED DIFFERENCE BETWEEN RIGHT AND LEFT WHEEL ON THE AXLE BY MEASURING INDIVIDUAL WHEEL SPEED THROW RIGHT AND LEFT SPEED SENSOR. IN CASE OF EXCEEDING THE LOGICAL SPEED DIFFERENCE WHEN THE VEHICLE GO AROUND A CURVED ROAD, THE CONTROLLER COMMANDS THE MULTI PLATE CLUTCH REDUCE THE SPINNING WHEEL THROW THE ACTIVATION OF THE SERVO MOTOR.
