Solution to Eliminate Vibrations of Mechatronic Device used in Filming Effects for DSLR Camcoders

摘要

The article presents the vibrations of a mechatronic solution used in linear guiding systems used to develop the filming "travelling" effect in cinematography on short distances (1 m). The guiding system is powered by an electric drive system developed especially to displace the DSLR camcorder according with the requirements of the filming effect. The device is made as a mechatronic system and software developed on a microcontroller to command the movement. The tested device includes a guided path, similar to the ones used in numerical command machines, that has a gliding trailer powered by step motors with a linear geared rack. The efficient command of the step motor is made using an ATmega8 microcontroller that sends signals, through the L298 circuit, to the step motor that will generate the micro-displacement in an open loop of 16 steps. The device can displace the camera with a high precision and a direct correlation between the travelled distance and time necessary to create high quality effects of time-lapse travelling.