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SAE Paper: Hardware-in-the-Loop technique for development of a semi-active suspension

ARAI India together with TESIS DYNAware present an SAE paper explaining the simulation based development of a semi-active suspension control.  It meets the challenge for an optimum between ride comfort and road holding which maximizes the results in safety and driving pleasure.

The veDYNA vehicle model duly validated with road data is used to develop a semi-active suspension with extended Skyhook control logic and PID controller. To implement a semi-active suspension system experimentally, MR (Magnetorheological) dampers are used. The control logic is further validated initially with Software-in-the-Loop (SiL) technique and later with component Hardware-in-the-Loop (HiL) technique.

In both techniques, use of digital road profile are made to analyze the results in terms of ride comfort and road holding characteristics for the suspension. In the SiL technique, a simulation model of the MR damper is used. In the HiL technique, a component HiL is used with 4 real MR dampers, which integrates virtual and experimental tools so that the design, development and validation of semi-active control is carried out in a more realistic manner. This development of suspension can be done in early phases of the vehicle development cycle with real MR dampers and without the need of a vehicle prototype. This technique consists of combining the real physical components on a loading rig in closed loop with the vehicle dynamic model running in real-time along with semi-active suspension control logic. This technique can also be referred to as “Component Hardware-in-the-Loop” (cHiL).

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