Speed and Voltage Control

E6.3.1.5

System
The experiments are set up with experiment plates in profile frames. The controlled system or control circuit are activated with the Profi-CASSY and the relevant measurement values recorded.

Objectives

Get familiar with the basic principles of controllers
Setpoint and disturbance control
Handle analysis and simulation software

Function
The 10 W machine set has two direct current machines with permanent excitation and an electronically controllable load. The machines are mechanically connected to each other by way of their shafts and come together to form a motor-generator unit. Load characteristic lines are recorded and disturbance interferences in speed and voltage control are investigated with the electronically controllable load. The drive engine and load are driven directly by the upstream controller. An external control element is not necessary for this. A switchable prefiltergives the 10 W machine set the dynamic behaviour of a larger machine set.

Method
The equipment is ideal for demonstration and students' experiments. The tests were carried out with an electronic manual and the data files for CASSY Lab 2 and WinFACT. It is true Plug & Play: The measurement starts automatically after loading the data file.

Target groups
Students completing vocational training in electrical engineering for industry and students of automation engineering and mechatronics are the target group. The course offers introductory experiments that are very simple and also addresses difficult topics for bachelor-level studies.

Topics

Characteristic curve for the temperature controlling system
Recording the jump response
Optimal amount, replacement controlled system
Technical controller
Controller in the limit range
Empirical tuning of controllers
Control unit design with known time constants for the controlled system
Controller design zero-pole compensation, KP determination in batch run
Control unit design through numerical optimization
Rule of thumb method
Setpoint and disturbance control with electronic controllers
Temperature regulation with a software controller
Temperature controlling with block-oriented PC simulation
Temperature control with two-point controller, influence of hysteresis
Two-point controller with delayed feedback
Two-point controller with delayed weakening feedback
Temperature regulation with three-point controller
Control circuit modelling

Similar figure

1	734 02 8	Reference variable generator
1	734 064N 8	PID digital controller net
1	734 111 8	Set of machines 10 W
1	524 016S2 8	Profi-CASSY Starter 2
1	775 685DE 4	LIT-print: Speed and voltage control, German
1	775 685EN 4	LIT-print: Speed and voltage control
1	775 685FR	LIT-print: Speed and voltage control, French
1	726 09 4	Panel frame T130, two-level
1	726 86 4	Stabilised power supply unit ±15 V / 3 A
1	500 59 8	Safety bridging plugs, black, set of 10
1	500 592 8	Safety bridging plugs with tap, black, set of 10
3	500 641 8	Safety experiment cable, 100 cm, red
3	500 642 4	Safety experiment cable, 100 cm, blue
2	500 644 8	Safety experiment cable, 100 cm, black
1	734 501 4	WINFACT LD Starter (one computer)
1	726 10 4	* Panel frame T150, two-level
1	734 502 4	* WINFACT LD Starter (site license)
1		additionally required: 1 PC with Windows 7 / 8.1 / 10 (x86 or x64)

Articles marked with * are not essential, we do however recommend them to carry out the experiment.

Speed and Voltage Control

All technologies