defining state variable for an external hydraulic suspension system for co-simuilation with Simulink 1

[behnam jafari]

hi

I am working on a external hydraulic system that works in tandem with the vehicle's spring and does not need a damper ( this external system can has the damper effect on its own )

I am going to have to delete the dampers on the four suspension stations in the vehicle and also define state variables so I can co-simulate the Simulink hydraulic system that I have designed with the Adams/car model .


the main question that I have from the experts that have worked on the suspension systems is that what are the best Measure Defining parts or points that I can extract inlet and outlet forces or displacements from the Adams/car suspension system so I can attach it to my Simulink/MATLAB system .


thanks for your help and support through all this forum .


I have extracted a lot from the help of the people here …

 

[GregLocock]

Caution - I haven't done a simulink cosim with ADAMS, and I don't use Car. I have done cosims in Chassis. The state variables you need to send to the simulink shock absorber model will depend on what it requires as inputs. A simple damper just needs the velocity between its two mounting points. The output variable from simulink would then just be a force.

As to the rest just copy the way that the original damper was set up. There may even be an option for a second damper.

Cheers

Greg Locock


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[behnam jafari]

thanks for answering so fast

so the point or points on which these velocities and forces should be defined ought to be the mounting parts right …?


I have been doing them on the bushing and inertia reference frame of the strut ...

 

[GregLocock]

yes, each end of the damper.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

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[behnam jafari]

thank you very much