Mathematical Modelling of Active Vibration Control on 2-Wheeler Handle Bar by using Smart Material

While driving or riding vehicle, vibrations are felt by driver or rider which are unwanted. The main sources of vibrations are because of uneveness in road profile, radial run out of tyre, unbalancing of wheels, misalignment of gears in gearbox, unbalancing of crankshaft inducing engine vibration and failure of bearings. These vibrations are transmitted to the rider through handle bar, tank and seat. Handle Bar becomes most prominent and thus this project will discuss about active vibration control of handle bar. The active control system is to be designed to remove the engine idle vibrations which are being transmitted to handle bar. The system consists of piezo-electric semi rings as sensors and actuators and some electronics as a part of control system. The first bending mode and highest strain energy or deformation section of handle bar was observed using COMSOL software. The finite element model of the structure was made and the locations of placing actuators are identified. Virtual simulations are carried using Matlab Simulink and programming. Different control algorithms, feedback methods like compensator feedback shunt damping are used to develop and design control system. It reduced vibrations upto 11.42 dB.