I am developing a computational model of active suspension system for off-road truck. so we have to develop a physical model of this system for its validation.
Hello Ashish!
I have worked on and developed a practical vibration cancellation system for a research group like yours. I believe your system requirement would be very much similar to that.
We were working on a piezo crystal based sensor-actuator system to actively suppress vibration of strip. More interestingly I have developed a high voltage amplifier that provides signal swings in excess of 500V peak-to-peak for sine wave @100Hz or higher. Rest included the signal conditioning, filters and data-acquisition and control.
For the last part, you can choose either a dedicated DSP hardware (if you have expertise in programing the processor) or use a PC based data acquisition and control strategy.
The research group later was also thinking of implementing the active suspension for a vehicle. But I am unaware of the later developments.
If the above solution suits your application may be I can help you further.
Best Wishes.
-Prasanna Waichal
Your question is no very clear. What are you hoping to validate exactly? Control strategy? Component design? Predicted component performance?
Highly accurate, validated simulation models of vehicle dynamics and hydraulic system components (etc) are already in existance, for example CarSim, AMEsim etc and these tools together provide a good route to virtual validation of system design and performance.
Rig testing can be used to verify component design (performs as intended) and validate models (model predictions match test results) etc. However test rig design is non trivial. Typically suspension test rigs utilize computer controlled high power high dynamic performance hydraulic systems and vary from simple single post rigs (which simulate the vertical inputs to a single wheel for a quarter car model) to 4 poster 4-12 axis rigs which can simulate the vertical [+lateral] [+longitudinal] inputs to each wheel on a full vehicle. Specialist suppliers can provide such rigs and automotive industry test houses (and some universities) can hire time on them to you.
Please have a look at the following paper: http://mediatum.ub.tum.de/doc/1072356/file.pdf