CARMEN Cross-system Motor-Tester

Once parameterise - use in all systems. Compare the results of all the CARMEN engine test benches.

Test procedures

System specific and standardised test procedures in test modules

Characteristic curves — Recording the motor characteristics from idle to stalled and vice versa.
Evaluation of the linearity and the violation of given limit curves/scatter bands
Determination of a regression line or an idealised course by calculating a polynomial.

Variable operation — Freely defined test over time.
Supporting points can be defined where a certain torque is reached within a specified time and is applied for a certain time.

Backlash — Checking the gear backlash by a defined load in both directions of rotation and determining the angle of twist above the torque.

Thermoswitch — Check the thermoswitch in the test sample by blocking the test sample to determine amount of time after which the thermoswitch trips at maximum current.

Transmission self-locking — Static measurement of gear inhibition by recording the angle over time, under varying load.

Gearbox overload — Static measurement of the angle at defined overload of the gearbox.

Hall sensor test — Checking of the Hall sensors in the test object under defined load and with analysis of the Hall pulses over the angle of rotation of the rotor.

Start-up under load — Measurement of the DUT characteristics at the starting torque under a defined load.

Ripple Test — The ripple is filtered out of the test sample stream and displayed.
The analysis of the waveform gives information about the quality of the test sample.
The ripple current is used by the manufacturers to determine the speed.

Self-locking with advance — Checking of the self-locking with short-circuited test specimen after a defined advance run with load in both directions of rotation.

Breakaway voltage — The test object voltage is increased under a defined load and determines at which voltage value, a rotational movement of the test object starts.

Synchronisation fluctuation — Recording and evaluating the speed fluctuations over a defined angle of rotation under a defined load.

Thermal behaviour — Evaluation of the thermal behaviour at different measuring points under defined load.

Motor time constant — After a voltage jump, the time is measured which the test object requires to accelerate to e.g. 63 % of the steady state final speed.

A powerful, database-supported software system offers you a variety of test procedures, analysis tools and functions for parameter and data management. These enable you as a product developer to recognise weaknesses in the UUT and to assign measurement data and test parameters to different UUT types.

In addition to the standardised test procedure for the classic motor characteristic curve, which represents the current and speed curve from no load (torque control = zero) to blocking of the test object above the torque, a large number of other test procedures are available. All of which conform to the specifications of the automotive industry.

In principle, all raw data of the measurement are recorded and stored for each test. This enables the calculation of results with changed evaluation parameters without having to repeat the test on the machine. In addition, the measurement data can be loaded on any PC and analysed again - a global networking of the engine test benches is thus given.

In order to further expand the functionality of CARMEN, you can program your own individual test algorithms. Test parameters or quality features that are determined during product development (in the development test bench) are used later in the endurance test or in the end-of-line test.

► More on Endurance test

From validation of development samples and prototypes, to reliability and endurance testing, as well as end-of-line testing, we manage all processes with just one software system.

common software system for all GÖPEL electronic engine testers
traceability of results across systems
system-wide application of test parameters and evaluation parameters such as limit curves etc.

In this area you create test samples, parameterise the control and store their properties. In addition, you can parameterise the permanently programmed test sequences and define evaluation parameters here.
Motor Parameterisation
- part number & type of control
Test Parameterisation
- fixed, repeatable test sequences and data evaluation
Motor Setting in Administrator Mode
The evaluation of the test specimens is simplified and traceably recorded by various analysis tools such as result tables with IO/NIO evaluation, measurement functions and evaluation of linearity. This information is stored together with the measurement data in the database.
Additional analysis tools
- limit curve editor
- calculation of idealised curves & performance parameters
- raw data display
- display of collective curves (comparison of several measurements in one diagram)
- display of measured data over time and configurable X/Y display
Test panel with test parameterisation, result table & display control
All test bench functions can be controlled or used separately, for example:
- torque control
- speed control
- positioning
- control of power supply units
- control via bus systems (CAN, LIN, etc.)
All measuring channels are recorded in a freely selectable way. With the Sequence Editor, you can program and run sequences of a test sequence yourself and record all available measurement data.
Time display
- user management allows the user rights to be restricted on several levels
- online language switching simplifies use, especially in an international environment
- regular calibration ensured by maintenance manager
- additional functions such as self-diagnosis, system monitor simplify troubleshooting and their elimination
- database search functions in the result browser for fast finding and displaying of certain test results
- clear and comfortable work on the system thanks to multi-window display
  (from full screen to split screen view - display more than one window simultaneously)