Looking for a way to develop actuator displacement signals on an Adams rig capable of reproducing measured responses on a test (physical) vehicle. Any suggestions for tools or processes?
Looking for a way to develop actuator displacement signals on an Adams rig capable of reproducing measured responses on a test (physical) vehicle. Any suggestions for tools or processes?
That is not an easy task. As you say, MTS has a professional software that has been developed over decades that does this and it is not cheap.
And if I remember correctly (over 25 years since I worked with it), it works with an iteratively process, start with sending in some random signal and measure the response and in that way can build up a (non-linear) MIMO transfer function from inputs to outputs. Inverting that transfer function, you then have the control system that you are asking for, where you can provide the desired response of the vehicle and it will apply the inputs that will provide those outputs.
But I never heard about anyone doing it all in Adams. When I worked with it, we used the MTS software on a rig, recorded the actuator motions, which is now a quasi-road, and then applied that in the Adams model. But that only works for very similar vehicles (i.e. you can't use the response of a RAM1500 to get road signals and then apply it to a Fiat 500).
That is not an easy task. As you say, MTS has a professional software that has been developed over decades that does this and it is not cheap.
And if I remember correctly (over 25 years since I worked with it), it works with an iteratively process, start with sending in some random signal and measure the response and in that way can build up a (non-linear) MIMO transfer function from inputs to outputs. Inverting that transfer function, you then have the control system that you are asking for, where you can provide the desired response of the vehicle and it will apply the inputs that will provide those outputs.
But I never heard about anyone doing it all in Adams. When I worked with it, we used the MTS software on a rig, recorded the actuator motions, which is now a quasi-road, and then applied that in the Adams model. But that only works for very similar vehicles (i.e. you can't use the response of a RAM1500 to get road signals and then apply it to a Fiat 500).
