Mr. Damian Sadowski Profile

Damian Sadowski

at Bialystok University of Technology

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Proceedings Article | 7 August 2017 Paper

Complementary filter implementation in the dynamic language Lua

Damian Sadowski, Aleksander Sawicki, Donatas Lukšys, Zdenek Slanina

Proceedings Volume 10445, 104451Q (2017) https://doi.org/10.1117/12.2280831

KEYWORDS: Gyroscopes, Microelectromechanical systems

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The article presents the complementary filter implementation, that is used for the estimation of the pitch angle, in Lua script language. Inertial sensors as accelerometer and gyroscope were used in the study.

Methods of angles estimation using acceleration and angular velocity sensors were presented in the theoretical part of the article. The operating principle of complementary filter has been presented. The prototype of Butterworth's analogue filter and its digital equivalent have been designed. Practical implementation of the issue was performed with the use of PC and DISCOVERY evaluation board equipped with STM32F01 processor, L3GD20 gyroscope and LS303DLHC accelerometer. Measurement data was transmitted by UART serial interface, then processed with the use of Lua software and luaRS232 programming library.

Practical implementation was divided into two stages. In the first part, measurement data has been recorded and then processed with help of a complementary filter. In the second step, coroutines mechanism was used to filter data in real time.

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