Project
As we press the throttle the speed of vehicle BAJA ATV is increases And the analogue speedometer shows appropriate reading to encorporate the sesors which connects with primary and secondary pully.
So changes in thottle praportional to change in speed.
COmponents of BAJA ATV
Physical Components of BAJA ATV
1) Vehicle Body
2)Suspension
3)Tire
4)Engine
5) CVT (Continuos Variable Transmission) :- It contains two pulleys one is Primary and second is called secondary pully.The mechanical energy driven in system by belt. SO its Belt driven system.
CVT is basically used to varry speed as per requirement or the area of energy utiliation.
CVT having four components
1) Primary Pully :-Its Basically used to transmit the load to07
secondary pully through Belt.
2) Secondary pully :- Its Also used to Transmit the load from belt driven primary pully.
3)Variator :- It a device which is used to varry or change the spped accordingly.
To incresase the speed of Secondary pully the Radious of first pully (Rp) will increase and radious of secondary pully (Rs) reduces.
To incresase the speed of first pully the Radious of first (Rp) pully will Decreses and radious of secondary pully (Rs) Improves.
Simulation Mode:-
As we give Throttle input from 0.3 to 20. As we give the throttle input at 20 the velocity gradually increasing and after reaching its maximum value it getting constant.
The inputs for engine taken from a graph. From graph teher is an option called GRABIT. From Grabit the inputconverts into EXCEL format. Then we extract it and used as Input.
In model input shaft inertia and output shaft inertia represent primary and secondary pullies respectively.
two sensors connected to both shafts to detect the speed in R.P.M in bith sides primary and secondary.
To adjust the speed we used simple gear, wIts conneted between gear and engine follwed by Engine Sensor to deted speed.
To select gear ratio with considering RPM of engine (3825 in BAJA ATV) With considering maximum torqe encorcoprated here in curve is 3825.
Vehicle Body- Here we can specify car Mass, No. of wheel per Axle. At different wait of vehicle it takes slightly higher time but after certain time the perfprmance is independant.
Summery
1) Used Simscape and Simscape driveline to model longitudinal vehicle dyanamics.
2) Incorporate real component data into your model.
3)Use simulation to explore and analyze various design and parameters.
4) Use Sufficient realistic data to model real-world conditions.