Practical Course: Measurement and Control Systems (MSR Labor)

The laboratory series Laboratory Practicum: Laboratory, Measurement, Control, and Regulation Technology consists of several experiments, each of which is conducted at the respective institutes. Due to limited laboratory capacities, a separate course is set up in Stud.IP for each laboratory. The corresponding links to the individual course entries are provided in the first lecture as part of the lecture slides.

The laboratory experiment offered at iMEK provides practical knowledge about the behavior of electric drives in interaction with hydraulic systems. The dynamic behavior of a three-phase asynchronous motor in a pump drive is investigated. The start-up process is simulated using a computer and compared with measurements taken at the test bench, allowing students to learn about both numerical methods and real experiments. A special focus is placed on the influence of flow rate and starting procedures on operating behavior.
In addition to a theoretical introduction to asynchronous machines, centrifugal pumps, and simulation methods, participants acquire skills in modeling technical systems, performing precise measurements, and critically evaluating and interpreting the results. The close integration of simulation and experiment enables students to understand complex electro-mechanical-hydraulic drives, characterize their behavior, and evaluate them in a practical manner.

1. Asynchronous machine

Students learn about the design and operation of three-phase asynchronous motors, including stator and rotor principles, slip, torque-speed characteristics, and starting behavior. They can evaluate different connection types (star/delta) and analyze the influence of mains voltage, frequency, and starting methods on operating behavior.

2. Centrifugal pumps and hydraulic characteristic curves

Students gain an understanding of how centrifugal pumps, characteristic curves, and laws of affinity laws. They practice evaluating pressure and flow characteristic curves, estimating losses in pipes and valves, and assessing the interaction of the motor and pump in the drive train.

3. Simulation of technical systems

The modeling of motors, pumps, pipes, and valves using Modelica/OpenModelica is covered. Students learn to set up differential equation systems, make appropriate simplifications, and parameterize simulations. They can critically examine simulation results, identify characteristic operating points, and compare them with experimental data.

4. Measurement technology and test implementation

Methods for recording electrical, mechanical, and hydraulic variables are applied in practice in the laboratory. Students perform power measurements, speed and volume flow determinations, and pressure recordings. They acquire the ability to systematically document measurement results, identify causes of deviations, and justify them technically.

5. System analysis and evaluation

Participants develop the competence to holistically analyze the behavior of a coupled motor-pump system. They can compare operating strategies, evaluate efficiency, and use both theoretical models and measurement data to assess the overall system.