Investigation of hardware-in-the-loop for use in suspension development |
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Authors: | W E Misselhorn N J Theron P S Els |
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Institution: |
a Dynamic Systems Group, Department of Mechanical and Aeronautical Engineering, University of Pretoria, South Africa |
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Abstract: | Hardware-in-the-loop (HiL) is a testing method in which real-time measurements on physical hardware replace the mathematical model of the particular hardware during simulation. The development of a semi-active suspension prompted the need for such capability. HiL, implemented on a PC with a dSpaceTM board in conjunction with a hydrodynamic actuator, was compared to software simulations of single degree of freedom (DOF) and two DOF systems. HiL was also compared to a physical (ballast-based) two DOF system, comprising the rear suspension of a motorcycle. Comparisons between the HiL and software responses showed its suitability for testing suspension systems, thus providing a viable alternative to ballast-based suspension tests, using available hardware. The research also showed that actuator dynamics, filter types and amounts, and signal reference levels required special consideration. |
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Keywords: | Hardware-in-the-loop Suspension Testing dSpaceTM |
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