I have been working on modelling our Brunel Racing vehicle using simscape and the racing lounge tutorial videos. I had a few problems previously however I now have read through each tutorial as well as many other resources and although I have fixed most problems there are a few issues that I would like your help on.
Attached is the model I have created. The gears seem to work fine and multiply the engine torque correctly whilst also shifting at the correct vehicle speed. The only issue I am having now is using the throttle to get the most out of the engine in the simulation.
In the model I am not running at full throttle, I am using a signal builder to input throttle values at given times. I am doing this as when I was using full throttle (T=1), which would be ideal, the simulation would not compute as there was an error in that the max speed of the engine would be exceeded. This I believe is due to the initial slip of the vehicle when under too high torque, therefore I cannot use T=1 to run my simulation.
My question was related to this, as in is there an ideal method in which I could input a throttle value such that this error would not occur but I would still get accurate results. At the moment from my model I am using this signal builder:
This is not an accurate method as I cannot use the full amount of torque available from the engine, yet I cant seem to use full throttle due to this error:
This error is as explained previously. Therefore this is my problem, as if I run with how the model is currently, it produces inaccurate results. For example, when studying an acceleration test the vehicle has already traveled 75m before it shifts gear as it hasnt reached a high enough speed due to the optimum torque not being available. Therefore the vehicle takes 9 seconds to accellerate over 75m which should be nearer to 4-5 seconds.
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