Development of a model of a semi-active system of reducing mechanical vibrations at workstations

The project involved an analysis of whole-body vibrations transmitted by technical devices to the human body in seat - human and platform - human systems. Principles of constructing a model of a semi-active system of reducing vibrations were formulated on the basis of an analysis of whole-body vibrations transmitted by technical devices to the human body at workstations, available solutions of dampers with controlled damping/rigidity and sample results of studies of vibrations at real workstations. Matlab-Simulink was used to develop a simulation model of the system, to define its parameters and to implement a control algorithm.Dampers with controlled rigidity were selected for the semi-active system of reducing vibrations in accordance with the construction principles.The next stage of the project involved developing a field version of the real model of the semi-active system of reducing vibrations. The system was built in the form of a suspension of the seat of the driver/operator of a self-propelled machine. One of the tested magneto-rheological RD 1005-3 dampers of Lord Co. was used.Simulation tests were conducted as part of the verification of the developed semi-active system of reducing vibrations; the complete system of activating data and controlling in real-time was also tested.