A vibration control system with an air spring as the actuator and proportional electropneumatic control has been developed at the Institute of Materials and Machine Mechanics, Bratislava. As the electropneumatic transducer, a proportional pressure control valve is used in contrast to the previously used proportional flow control valve. The vibration control is facilitated by a combination of a 'sky hook' feedback loop and a feedforward loop working on the so-called 'sky cloud' principle, compensating base vertical vibration. Good agreement between simulation results and measurement on a laboratory dummy system was observed. The dummy system was also subjected to narrow-band random excitation, prescribed for standardized laboratory tests of driver's seats. The improvement in driver's seat vibration control properties owing to the feedforward vibration compensation is 2.5-fold, i.e. by 8 dB in comparison with 'sky hook' feedback damping only. The system could be used for vibration control in automotive applications, especially for vehicles with an unsprung chassis (earth-moving machines, wheeled tractors) and in the heavy vehicles sector.
New results on an electropneumatic active seat suspension system
2000
12 Seiten, 29 Quellen
Article (Journal)
English
New results on an electropneumatic active seat suspension system
SAGE Publications | 2000
|Results of Investigation of an Electropneumatic Active Vibration Control System for a Driver's Seat
SAGE Publications | 1995
|Results of investigation of an electropneumatic active vibration control system for a driver's seat
Online Contents | 1995
|Results of investigation of an electropneumatic active vibration control system for a drivers seat
Automotive engineering | 1995
|