Effectiveness of the active pneumatic suspension of the operator’s seat of the mobile machine in depend of the vibration reduction strategies

• Autorzy: Chwastek S. , Pobędza J.

Identyfikatory

DOI

10.5604/01.3001.0012.4319

• Języki publikacji: EN

Abstrakty

EN

Low speeds of heavy mobile machines combined with large inertia result in the excitation of low frequency vibrations. Dissipation of vibration energy in the case of unsprung machines is performed only through tires, which slightly reduces the intensity of vibrations. Effective reduction of vibrations of mobile machines is possible only with active or semi-active methods. In unsprung mobile machines, on the way of propagation of vibrations between the source of vibrations and the protected object (machine operator), are vibroisolation systems located. These are most often controlled seat suspensions. In the case of the active suspensions, it is necessary to provide external energy, e.g. in the form of compressed air. The compressed air has the advantage that it is generally available in working machines as the working fluid and has its environmentally friendly properties (leaks do not contaminate the environment). This article is the result of the continuation of work on active methods of vibro-activity lowering in mobile machines, which resulted in, among others, elaboration of simulation model of the active operator’s seat suspension with controlled pneumatic actuator and its experimental identification. In particular, it was verifying the effectiveness of the adopted solution made the identification the friction model and thermodynamic phenomena in the controlled pneumatic cylinder. The aim of this work is parametric optimization of the suspension system and searching for the optimal control strategy. Experimental tests were carried out under conditions of harmonic excitations, coming from the electromechanical vibration exciter with controllable pitch and frequency. Data acquisition system and control circuit of the proportional directional control valve, supplying compressed air to the actuator were implemented using MATLAB-Simulink Real-Time software.

Słowa kluczowe

EN

unsprung mobile machines; active vibration reduction; controlled suspension seats; pneumatic actuator

• 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: 2018
• Tom: Vol. 25, No. 3
• Strony: 93--98
• Opis fizyczny: Bibliogr. 5 poz., rys.

Twórcy

autor

Chwastek S.

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

autor

Pobędza J.

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

Bibliografia

• [1] Chwastek, S., Active vibration reduction operator’s seat with the use of controlled singleacting pneumatic actuator, Journal of KONES Powertrain and Transport, Vol. 22, No. 3,pp. 13-20, 2015.
• [2] Chwastek, S., Kozioł, P., Semiactive reduction of vibration operator’s seat with the use of controlled magnetorheological damper. Journal of KONES Powertrain and Transport, Vol. 22, No. 4, pp. 59-66, 2015.
• [3] Flis, K., Pobędza, J., Simulation of pneumatic motor used in pneumobile, Journal of KONES Powertrain and Transport, Vol. 21, No. 3, 2014.
• [4] Kamiński, Z., Modelowanie nieliniowości i nieciągłości w pneumatycznych siłownikach tłokowych, Hydraulika i Pneumatyka, Nr 2, 2006.
• [5] Kościelny, W., Hamowanie siłowników pneumatycznych, Hydraulika i Pneumatyka, Nr 4,2004.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).