Positive position feedback (PPF) controller applied toa quarter car active Suspension systems

Abdelhafez, H. M.; Omara, O. M.

doi:10.21608/mjeer.2017.63488

Positive position feedback (PPF) controller applied toa quarter car active Suspension systems

Document Type : Original Article

Authors

Dept. of Physics and Engineering Mathematics, Faculty of Electronic Engineering, Menoufia University

10.21608/mjeer.2017.63488

Abstract

This paper introduced, the positive position feedback (PPF) active controller is applied to control the quarter car suspension system, it excited by the disturbances on surface of the road. The PPF active controller is investigated for ride comfort improvement at simultaneous resonance. The main idea to control the system that is the magneto-rheological or Electrical-rheological damper is attached parallel with the hydraulic damper and a controller is developed for suppressing the vibration of the closed loop control system, hence improving the passenger comfort. The control signal can be produced by control circuits such as programmable logic controller or embedded electronics circuits that produced the control electrical signal to the controlled damper. The approximate solution is produced by using multiple time scales perturbation method (MSTP).The corresponding frequency response equations are extracted and plotted at the different systems parameters. Finally, numerical simulations are constructed to validate the approximate solution. Found that all analytical solutions are near to the numerical simulation. The all output approximate solution can be programmed to the control circuits.

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