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

thread800-456057

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

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

(OP)
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 …
Replies continue below

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

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

(OP)
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 ...

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

(OP)
thank you very much

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