Development and optimization of adjustable vibration source for investigation of prosthesis-to-human feedback of intellectual artificial limb

According to World Health Organization data about one billion of people worldwide are disabled people. About one third of these people are people with mobility or movements impairments. First problem is that for that kind people high precision prosthetic devices with neural control and feedback are very expensive. Second problem almost all average price prosthetic devices have visual feedback system which loads user vision. To solve these two problems decided develop prosthetic devices with other kind of feedback systems: thermal, electrical, pressure, vibration...etc. For using vibration feedback system vibration motors must work in wide range of frequency spectrum and produce controlled intensity in every frequency point. Unfortunately nowadays produced vibration motors cannot satisfy these requirements. In this paper represented three possible solutions of vibration devices for prosthetic feedback systems. Loudspeaker motor based system, linear motor based system and combined system. All three systems are modelled in comsoll metaphysics environment. Modelled parameters are flux density and force-frequency dependencies. As result the best candidate for vibration system is simple voice coil motor. It has linear force-frequency spectrum in wide range. Linear motor most have complex control system and have the same results as combined motor.