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Development of Active Damper System using Magnetorheological Dampers for 2007 Model Year Acura MDX

Article of Honda R&D Technical Review Vol.19 No.1

Summary

This paper describes the development of magnetorheological (MR) dampers and their application to the 2007 model year MDX. MR dampers have been used in the market on various vehicles since 2001. They use a special oil-based fluid (Magnetorheological fluid, MRF) that contains small iron particles (1–10 μm in size) and a controllable electromagnetic piston to allow a wide range of damping forces. The system provides the customer a benefit over conventional dampers by using its wide range of available damping force to enhance body control while simultaneously providing outstanding ride comfort. This technology was implemented on the 2007 model year MDX under the name Active Damper System (ADS). The ADS system uses Honda-exclusive control logic that precisely controls damping force via skyhook, roll, pitch, and several other algorithms. The result is a vehicle with a higher level of both ride and handling performance that leaves all of our customers more satisfied.

Reference

(1) Carlson, J.D.: What Makes a Good MR Fluid?, International Conference on Electrorheological (ER) Fluids and Magnetorheological (MR) Suspensions (2001)
(2) Izawa, M., Kato, T., Fukuzato, T., Sekiya, S.: Development of a Roll Control Method Using a Variable Damper that Takes into Account Ride Performance while Steering, The 8th International Symposium on Advanced Vehicle Control (2006)
(3) Schöpfel, A., Spengel, G., Kuipers, G., Höcht, T., Gies, S.: Das Dämpferregelungssystem Audi magnetic ride im neuen Audi TT, Aachen Colloquium of Automobile and Engine Technology (2006) (in German)

Author (organization or company)

Lars Moravy(HONDA R&D AMERICAS INC. OHIO CENTER)、Jeremy Nutting(HONDA R&D AMERICAS INC. OHIO CENTER)、Nate Ellis(HONDA R&D AMERICAS INC. OHIO CENTER)

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