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raS Software

Precise analysis of torsional vibrations, valve dynamics and transmission errors for the automotive industry,
energy & mechanical engineering


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Our solutions

Services

Measurements & online graphics

Setting and performing measurements of speed, analogue, CANbus, temperature and strain gauge channels

Online graphics for visualisation during the measurement, including time curves, spectrum, single order, sum value and difference channel calculation

Limit value monitoring and alarm output of the trigger card can be configured

Evaluation

Comprehensive analyses in both the time and spectral ranges

The common time base of all channels enables reliable multi-channel evaluation of speed channels and the reference of analogue measured variables to a speed channel

Rotation angle and transmission error of gearboxes with sub-micrometre resolution

Visualisation & Report

Use of the modular system with predefined graphic modules

Waterfall, contour and Campbell representation, 3D representation with lines, meshes and colour levels

Interactive graphics (zoom, rotate, measuring pointer, sectional diagrams)

Placeholders & processes

Placeholders, sequences and the remote control function allow measurements and analyses to be automated and integrated into a testing machine

Typical applications in the end-of-line inspection of gearboxes and gear pairs

 

 

 

 

 

 

 

 

 

 

 

Analyses in the time and angle range

The different types of analyses in the ROTEC RAS software can be divided into analyses in the time domain and those in the spectral domain. It is also possible to subdivide the analyses into the "Time / Time intervals / Frequencies" group and the "Angles / Rotations / Orders" group.

This results in the following scheme for the analyses: Open here

General analyses

Time curveand rotation curve

Angle analysis

Order and frequency spectrum


Special analyses, with restricted area of application

Division error

Octave filter and third-octave filter

Structure analysis

Transfer function

Special analyses for very specific applications

Valvetrain

Gearing analysis / gearbox analysis

Overrunning clutch

Special sensors

Force-displacement diagram

Operational balancing


 

 

 

 

 

 

 

 

 

 

2D and 3D order analyses

Image Speed fluctuation of a four-cylinder four-stroke diesel engine

3D spectrogram, waterfall representation
Orders of the speed fluctuation over the speed

Figure Speed fluctuation of a four-cylinder four-stroke diesel engine Individual orders, mean and total values

3D spectrogram, contour plot (false colours)
Orders of the speed fluctuation over the speed

Figure Speed fluctuation of a four-cylinder four-stroke diesel engine 2d Individual orders, mean and total value
2D single orders from the 3D spectogram
Image 2D single orders, mean and sum value
Locus curves for orders 2 and 6

Dynamic twist angle

Image Rotation angle and transmission error of gearboxes with resolution in the sub-micrometre range

1x torsion angle, 2x oscillation angle
on one camshaft phaser

Image Angular Displacement 3-Cylinder Four-Stroke Engine VCT Shift and Vibration Angle

1x torsion angle and 2xspeed
on one camshaft phaser

Picture Angular Displacement 3-Cylinder Four-Stroke Engine VCT Shift, Static and Run-Up Speed
Static and dynamictorsion angle
on a camshaft phaser
Image Angular Displacement 3-Cylinder Four-Stroke Engine VCT Shift, Static and Dynamick Part.

Static and dynamic torsion angle
on a camshaft phaser

Vibration angle

Image Vibration angle From measured speed fluctuations

Envelope curves of the oscillation angle
at low load and full load

Image Vibration angle From measured speed fluctuations In the time and spectral range
3D order spectrum of theoscillationangle
at low load and full load
Image Vibration angle From measured speed fluctuations In the time and spectral range Decomposition into work cycles
3D visualisation of the decomposition intoworkcycles
at low load and full load, all orders
Figure Vibration angle Breakdown into working cycles

2D single orders = sectional images of the 3D spectrum

Interlocking analyses

Image Single flank rolling test Order analysis

Transmission error of a 57:60 gear pair
with fractional decomposition (longwave and shortwave)

Image Single flank rolling test Order spectra, structure-borne sound analysis of multi-stage gears

Averaged rotation of the 57 mmgear
with damaged area (knocker)

Image Evaluation of the order analysis. The common time base of all channels enables a reliable multi-channel evaluation of speed channels as well as the reference of analogue measured variables to a speed channel

Average rotation of the 60 mmgear
with proportion decomposition and DIN characteristic values

Image order analysis
Order spectrum of the averagedrotation
of the 60 mm gear (1st order = concentricity error

Valve train

Interactive valve lift measurement graphic (zoom, rotate, measuring pointer, sectional diagrams)
Vernier speed calculated from the valve stroke,
normalised derivation according to the angle of rotation
Figure Order spectra valve lift The valve control is analysed on the basis of the measured analogue variables valve lift and valve speed as a function of the camshaft position.
Measured valve lift via speed,
Breakdown into working cycles
Image Software module for automated evaluation of dynamic parameters
Valve lift on the base circuit; negative values due to
valve deflection at combustion pressure peak
Valve train evaluation image
Maximum valve lift (value and angular position)
and touchdown speed above the speed

Customised solution required?

ROTEC ENGINEERING offers customised measurement technology solutions and complete project management.
Discuss project

#FAQs

Frequently Asked Questions

Have Question? We are here to help

What does the ROTEC solution for rotation analysis look like and what does RAS mean?

The ROTEC Rotational Analysis System (RAS) has been used for more than 30 years by users in the mechanical engineering, automotive, power generation and motorsport industries to comprehensively analyse rotating components.

With its unique measurement method using a 12.3 GHz counter card and a strictly angle-based approach to rotational speed detection and analysis, the RAS system offers users an unrivalled advantage.

ROTEC offers not only optical and magnetic speed sensors including signal conditioning adapters, but also the modular measuring system RASdelta as well as specialised and user-friendly software for measurement and analysis. This enables a complete solution from a single source. The ROTEC measurement technology products are perfectly harmonised and deliver meaningful results within a very short time after the uncomplicated setup of the measurement chain.

Thanks to the angle-based approach to speed measurement, problems such as sensor vibrations can be recognised after the first measurement and rectified immediately. This effectively prevents costly incorrect measurements.

Our team of experts at ROTEC ENGINEERING, consisting of long-standing users, will be happy to assist you with challenging tasks.

Are there options for customising the measuring systems and software?

The ROTEC RASdelta front end is a versatile modular measuring system that can be individually configured with 8 or 16 measuring cards to meet your specific measuring requirements.

Our RAS software offers you a comprehensive modular system for analysing rotating components and complex systems. It is an effective tool for mechanical engineers and requires no programming knowledge to perform measurements or analyses.

If you have specific metrological questions, our experienced ROTEC ENGINEERING consulting team will be happy to support you.

Does ROTEC offer other services in addition to the measuring systems, e.g. customised consulting or project support?

ROTEC not only offers speed sensors, signal conditioning, measurement systems (DAQ) and measurement and evaluation software, but also engineering and consulting services.

Our services include the design of measuring points in CAD, the mechanical processing of components, the application and calibration of sensors, the execution of measurement tasks and the evaluation of measurements in accordance with our customers' requirements, including the presentation of the results. The ROTEC ENGINEERING team can also realise sub-projects as part of project support.

Is there training or technical support for commissioning and integrating the measuring systems?

In addition to our annual ROTEC Training Week, which is held in both German and English, we also offer customised training courses for users. These training courses are specially tailored to your individual application of the ROTEC measuring system and include practical demo measurements in your environment in addition to the theoretical basics and a detailed presentation of the software. This ensures that future users are optimally prepared for your specific application.

Furthermore, we are happy to support you in the commissioning of new measuring systems to enable you to familiarise yourself with the settings and possibilities of the RAS software as quickly as possible.

How is support ensured and are there self-help options?

In addition to our sales and support team in Munich, which serves the Central European market directly from here, ROTEC also cooperates with local partners in many global markets. These partners support local users in all matters relating to ROTEC measurement technology, first-level support and sales enquiries with trained personnel.

Our customers around the world appreciate the proximity of our sales and support teams, as this enables us to guarantee effective support even for short-term questions.

In addition to personal contact, ROTEC also offers an extensive knowledge database for self-help. Please register for our knowledge database to obtain detailed information on measuring and analysing torsional vibrations, transmission errors and valve systems, among other things.