Laboratory Experiments > Tank System > Brief Description

TS21 Tank-System

The laboratory experiment "TS21 Tank System" contains
the technical implementation of a nonlinear, single-variable system (one input variable and one output variable), an actuator for the pump and, as standard, an
analog controller (nonlinear controller).

The nonlinear controlled member consists of a plexiglass cylinder T of cross-sectional area A. The liquid (distilled water) flowing from T is collected in a reservoir from which the pump supplies the tank T.
A process pressure transmitter is located on the tank to measure the height of the liquid level. An analog controller controls the volume flow rate Q of the pump such that the liquid level in the tank T remains constant. In addition the tank is fitted with a continually variable manual valve to simulate a leak.
Furthermore the basic version of the laboratory experiment already contains a USB interface for the transmission of control and measurement signals via a PC or Laptop. All signals may also be accessed via a 37 pol. DSUB connector. By means of a switch on the rear
panel of the actuator the desired interface is to be selected.

The associated documentation contains appropriate instructions for the installation, the theoretical background of the plant, operating instructions for the analog controller, the technical data, guidelines for a practical course and solutions as well as operating instructions for the controller program. This standard version is therefore suitable as a practical experiment for students in all stages of control engineering.

The extended PC version consists of an executable controller program (for WINDOWS 7-10). The program (option 21-02USB or option 21-02DAC) provides plant identification, free adjustment of controller parameters and setpoint as well as acquisition and graphic output of the control signal and the measured liquid level. The option 21-02DAC contains additionally the A/D-D/A converter card MF634 for a PCIe slot.

The graphic output of recorded data may be sent to a window. Its content may be printed, saved as a WMF file or copied into the clipboard.

By means of the PC plug-in card MF634 of Humusoft the laboratory experiment "TS21 Tank-System" can easily be integrated in Matlab/Simulink with real-time environment. The user now has the opportunity to test its own controller designs under Matlab/Simulink.

The option 21-03 consists of the C++ source code of the PC controller program with library library routines for graphic output, controlling the sampling period as well as controlling the USB interface and the PC adapter card. With this extra software for special control algorithms, supervision and fault detection can be developed by the user. The Embarcadero C++ Builder V10 is required.

As extension for the laboratory experiment "Tank-System TS21" the following options are available:

  • Option 21-04 Software extension to control the electrical control valves (requires Opt. 21-02DAC, Opt. 21-07, Opt. 21-09).
  • Option 21-07 Electrical control valve with potentiometer output.

  • Option 21-09 Adapter Box to connect the control valves (Opt. 21-07) to a PC.

There are separate data sheets available for the options 21-07 and -09.

Technical data are subject to change (Date 19-December-2018)