Simulations of the active cab suspension

• Autorzy: Tora G.
• Języki publikacji: EN

Abstrakty

EN

In the context of growing ergonomic concerns and pressing competition on the market, designing machines and vehicles offering a better operator comfort has become a major trend in development of heavy-duty machines and vehicles. During the ride over the rough terrain, the cab is subjected to excitations in the form of low frequency and high-amplitude vibration. This study investigates the vibration reduction strategy whereby the machine structure should incorporate an active suspension of the cab. An actuating mechanism is incorporated, connected to the machine frame and the cab, and placed in between. The main system component is a mobile platform to which the cab is attached. Respective drives set in motion the passive links in the actuating mechanism. The drives are equipped with cylinders capturing the instantaneous velocities derived in the control sub-system. The machine frame, subjected to kinematic excitations, performs a movement in space, which has to be measured with a set of sensors to support the control process. Basing on the measured movements of the machine frame, the control sub-system calculates the realtime values of the anticipated load and the required drive velocities. This study focuses on the development of a mechanical model of the actuating mechanism operating in several degree of freedom options. Solving the direct and inverse problems involving the position and velocity of the mechanism allows the Jacobean matrix to be applied in Newton-Euler’s equations. The purpose of the active suspension system is to stabilise the cab in the vertical position and to reduce its lateral vibrations and seat vibrations in the vertical. This study summarises the results of simulations performed to evaluate the system's performance and its power demand.

Słowa kluczowe

EN

heavy duty machines; active vibration control; platform mechanism

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2012
• Tom: Vol. 19, No. 1
• Strony: 455--464
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Tora G.

• Cracow University of Technology Faculty of Mechanical Engineering Institute of Machine Design Jana Pawła II Av. 37, 31-864 Krakow, Poland tel.: [phone], fax: [phone],

Bibliografia

• [1] Achen, A., Toscano, J., Marjoram, R., StClair, K., McMahon, B., Goelz, A., Shutto, S.,Semiactive vehicle cab suspension using magnetorheological (mr) technology, Proc. of the7 th JFPS Int. Symp. on Fluid Power, TOYAMA, 561-564, 2008.
• [2] Dasgupta, B., Choudhury, P., A general strategy based on the Newton-Euler approach for the dynamic formulation of parallel manipulators, MMT 34, 801-824, 1999.
• [3] Du, H., Zhang, N., Lam, J., Parameter-dependent input-delayed control of uncertain vehicle suspension, Journal of Sound and Vibration 317, 537–556, 2008.
• [4] Duke, M., Goss, G., Investigation of Tractor Driver Seat Performance with Non-linear Stiffness and On–off Damper, Biosystems Engineering 96 (4), 477–486, 2007.
• [5] Graf, Ch. Maas, J., Pflug, H.-Ch., Concept for an Active Cabin Suspension, Proceedings of the 2009 IEEE International Conference on Mechatronics. Malaga, Spain 2009.
• [6] Sampaio, J. V. R., Design of a Low Power Active Truck Cab Suspension, Eindhoven University of Technology, Department of Mech. Engineering, Dynamics and Control, 2009.