Seminar: Use of MEMS inertial sensors for performance improvement of low-cost motion control systems

Giovedì, 10 Maggio, 2018 - 16:00

May 10, 2018 h. 16-18

Aula 20

Title
Use of MEMS inertial sensors for performance improvement of low-cost motion control systems

Speaker
Prof. Roberto Oboe
Dipartimento di Tecnica e Gestione dei Sistemi Industriali
Università di Padova

Abstract

The performance of a motion control system depends on hardware capabilities, such as sensor resolution and ac- tuator technology. Given a certain plant, an amelioration of the performance can be often obtained by using better sensors. This, however, may require a redesign of the system, as the new sensor may not fit the existing plant. As for the actuators, we can still find many motion control systems using stepper motors. Such actuators achieve a limited motion speed, especially in presence of mechanical resonances, which amplify the typical torque ripple of this type of actuators. Again, a possible solution is the replacement of the actuator with another, with better characteristics, but this may require the redesign of the plant. To improve the performance of the existing plants with minimally invasive modifications, our group has developed a set of solutions, based on the use of low-cost MEMS inertial sensors, which can be easily placed on the system to be controlled. It will be shown how we used such sensors to develop new control strategies, to enhance the performance of existing sensors and actuators, without major modifications of the plant. This will be demonstrated through some examples taken from both laboratory and industrial applications