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Digital signal acquisition architectures and computed controlled systems


At the end of this module, the student will have understood and be ableto explain (main concepts) :
The complete modelling and control of an electronic system from sensor to actuator is presented, including signal sampling, compression, numerical control.

The course is divided into three complementary parts:
· Electronics design: different techniques used in analog and digital
converters, with their associated architectures, are detailed. Companding techniques
are presented (A-law). The design of an analog-digital-analog conversion stage is presented, taking
into account signal-to-noise ratio estimation, analog sensor properties,
A/D converter, signal processing by microcontroller, digital-to-analog converter and actuator.
· Control design: discrete-time linear models: input/output model, state-space models.
Sampling with zero-order hold. Stability criteria. How to obtain a discrete-time controller
from a continuous-time one. RST controller: Regulation and tracking.
Relation to state-space methods.
· Project: the purpose is to cover several items such as the design of an analog
sensor, controlling an A/D converter, the necessary digital processing (minimal control
law) and finally the D/A conversion to drive the actuator. The whole circuit will be
controlled by a microcontroller.

Form of assessment

The evaluation of outcome prior learning is made as a continuous training during the semester. According ot the teaching, the assessment will be different: as a written exam, an oral exam, a record, a written report, peers review...