Project
Aim: Carry out a system-level simulation of an all-terrain vehicle.
I have to make a cvt model of an all terrain vehicle with lookup table and without lookup table .
Overview : This submission contains a set of models created with Simulink, Simscape, and Simscape Driveline.
More specifically, the file contained includes BAJA ATV model with Continuously Variable Transmission(CVT).
These models show how to build an ATV with CVT which is mostly used in BAJA competitions. Simscape and Simscape Driveline have been used to complete the system. The engine data used in the model is provided as an image which shows the Engine Speed (RPM) Vs Torque curve.
Continuos Variable Transmission .
This continuos gear ratios lasts with other transmissions that provide a limited number of gear ratios in fixed steps. The flexibility of a CVT with suitable control may allow the engine to operate at a constant RPM while the vehicle moves at varying speeds.
The CVT is an automatic transmission that uses two pulleys with a steel belt running between them. To continuously vary its gear ratios, the CVT simultaneously adjusts the diameter of the "drive pulley" that transmits torque from the engine and the "driven pulley" that transfers torque to the wheels. With stepless shifting of gear ratios, the CVT can avoid the shift-shock and deliver smooth driving, making it an exceptional transmission solution.
To make a cvt model we use Mathworks products like Matlab, simulink , simscape , simscape driveline .
cvt is used in different different applications like in automobile , tractors , motors , scooters and earthworming equipments .
CVT Block : blocks uses in to make cvt model are as follows
- Input shaft inertia
- variable gear transmission ratio
- output shaft
- Ideal Translational motion sensor as primary RPM
- Ideal Translational motion sensor as secondary RPM
- Mechanical rotational reference
Physical modelling connection port
After forming the blocks of cvt we have to make this model as subsytem and then it connect to Signal Builder , Generic Engine , Variable ratio Transmission, Simple Gear Box , Vehicle Body , Tire (Magic formula ) , double shoe brake , throttle input , brake input , these are the component of baja atv models .
