I have designed a trajectory tracking controller for a passenger car. The output of the controller is the applied torque to the wheels. I decided to verify this controller using an IPG carmaker simulator. The operator of the IPG carmaker asked me to give the position of the accelerator and brake pedals as the control input; otherwise, he cannot perform the simulation. Is he right? Is not there any way to implement the desired torque to the wheels in IPG carmaker? If so, how can I convert the applied torque to the position of the accelerator and brake pedals? Is there any transfer function for this purpose?
Dear Ali,
I suggest you to see links and attached files on topic.
http://downloads.hindawi.com/journals/mpe/2014/245641.pdf
http://publications.lib.chalmers.se/records/fulltext/225751/local_225751.pdf
https://www.amazon.in/Advances-Automotive-Control-2004-set/dp/0080442501
Article Vehicle Dynamics Control with Energy Recuperation based on C...
Best regards
The wheel torque can be interpreted as throttle opening percentage by modeling the driveline backwards, i.e. wheels=> driveshaft=> gearbox=> move-off element (clutch or torque converter)=> engine, and finally the engine map can be used to obtain the throttle opening percentage. A similar approach for brake system can be explored as well.
I know it seems obvious, but you should perform this procedure using the parameters defined in your validation platform (IPG). Otherwise, you should find the detailed specifications of your considered vehicle.
is the operator asked for the initial condition for the accelerator and brake pedals if so try to put a random numbers in a specified units for them.
I think, The accelerator and break must work on a feedback loop system. a generic function which includes the odometer (current speed) must also be used to predict the trajectory. in generic term high throttle = high break . If ABS system in active the mapping between accelerator and break can be made more stable.
The operator is right. Throttle and break values needs to be provided.
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