Laboratory Practice (Messlabor)

Experiments
For detailed description click on the experiments:

Description
In this experiment, you ARE the controller! You are in the loop with a joystick and a screen as the interfaces to different plants that must be controlled. Based on that experiment, the transfer function of the human controller is derived and modeled.

Methods
Transfer functions, Bode plots

Script
Download Download (PDF, 223 KB)

Place
ML J 44.1

Block diagram of "Human in the Loop"
Block diagram of "Human in the Loop"

Description
This experiment gives you a basic insight into the challenges of sensor technology using the example of a mass flow sensor. In doing so, you will compare a simple prototype of the measurement principle with the finished, highly integrated product from Sensirion. The lab provides intuition for system modeling and PID control and gives you access to Simscape as an extension to modeling in Simulink.

Methods
Thermodynamic modelling, PID controller, Simscape

Script
Download Download (PDF, 2.5 MB)

Place
ML J 44.1

The air massflow sensor equipment
The air massflow sensor equipment

Description

In this experiment, you will get an introduction to the basic concepts of Model Predictive Control (MPC). This modern control method is characterized, among other things, by its ability to explicitly take constraints into account. By using an optimization problem to compute the control variables, MPC is fundamentally different from many classical control concepts such as PID. In this lab, you will have the opportunity to learn about the operation of a nonlinear MPC controller on a real system, a minisegway, and to become familiar with the most important building blocks such as quality criterion, time horizon and constraints.

Methods

System modeling, LQR, Optimization, Modle predictive control

Script

Download Download (PDF, 2.5 MB)

Place

ML J 44.1

Two-wheeled robot

Description

Satellites often need a precise attitude determination and control system (ADCS) to be able to point at a specific area of the earth. During this lab, you will learn different control techniques which can be used to control a 4U satellite placed on an air-bearing. The attitude control is done using four small thruster units consisting of a small valve and a nozzle.

Methods

PD, Feed forward, Schmitt trigger

Script

Download Download (PDF, 2.1 MB)

Files

Download Download (ZIP, 409 KB)

Place

ML J 44.1

Satellite Schematic

Script
Individual handouts for each of the experiments.

Laboratory
4 hours per week for 12 weeks.
A total of ten experiments in the following areas are required:

  • Physics (at least four)
  • Control (see above)
  • Electronics
  • Energy systems
  • Fluid dynamics
  • Mechanics
  • Process engineering
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