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applications

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

Internal combustion engine

NVH, comfort, emissions

Control drive
Auxiliary units
Clutch / damper
Transmission
Valve dynamics

Power generation

Structure-borne noise and resonances

Wind power gearboxes
Turbines

E-vehicle

NVH, electric drive, acoustics

Hybrid / ICE vehicles
E-drivetrain
E-axle drive

Mechanical engineering

Gearbox testing, rolling gears & noise optimisation

Single flank rolling test
Gearboxes

combustion engine

By measuring torsional vibration in combination with analogue measured values, important information about the operation and performance of the engine can be obtained and potential problems can be detected. Torsional vibration measurement involves analysing and evaluating vibration during operation. This allows valuable data to be generated, which not only provides information on phenomena like imbalance, wear or other mechanical problems, for example, but also allows precise conclusions to be drawn about other operating parameters. 

Control drive

Problems: Catastrophic failure, deflection, performance degradation, chain noise, tensioner uniformity.

Goal: Improved valve timing, improved reliability, reduced power loss, improved NVH characteristics.

Auxiliary units

Problem: Slippage, stretching, belt vibration & noise, pilling, misalignment.

Goal: Managed accessory load, belt tension, tensioner and balancer refinement, overrunning decoupler design.

 

Gearbox

Problem: Gearbox noise, pitting, eccentricity, transmission error (TE), backlash, whirling.
Goal: Anti-backlash designs, coupling refinement and noise reduction.

 

Clutch/damper

Problem: Crankshaft torsion, slip, judder and disengagement 

Goal: Clutch design, dual-mass flywheel refinement, material selection and spring refinement.

NVH

Problem: Gear rattle, shudder, resonance, booming and engine whine. 

Goal: Mass balancing, occupant comfort, calibration and isolation mount development.

 

Valve dynamics

Problem: Valve bounce & float, rubbing, valve lift and timing.

Goal: Follower refinement, Variable Valve Timing (VVT) , Variable Valve Lift (VVL), sodium valves and lash adjuster development.

 

energy generation

Reduce transmission errors and structure-borne noise in wind power gearboxes and turbines - with the Rotec RASdelta measuring system and high-resolution sensors. Our angle-based method quantifies every single gear backlash and avoids wear and noise.

Wind turbine gearbox

Problems: Transmission error, emissions of structure-borne sound and noise, torque spikes, bearing cracks and mechanical wear on components.

Objective: Elastomeric mount design, flexible couplings design, tuned mass dampers (TMDs) refinement, active vibration control (AVC) and tooth profile grinding

Turbines

Problems: Mechanical damage to the turbine, shaft breakage of the turbine and identification of resonance areas.
Objective: Optimising the design of the turbines, preventing the superimposition of torsional vibrations due to frequency fluctuations in the grid.

e-vehicle

High-resolution magnetic and laser sensors, accelerometers, microphones, current and voltage probes measure torsional vibration, structural noise and electrical variables in the drivetrain, with the 12.3 GHz speed card, we record angular displacements in the µrad range and link mechanical and electrical measured variables to analyse transmission errors, torque fluctuations, forces and NVH phenomena and optimise the efficiency and comfort of the electric drivetrain 

E-vehicle

Problems: Acoustic responses, NVH artifacts (noise, vibration, harshness), torsional oscillations and dynamic loads on the e-drivetrain.

Goal: Torsional damping coupling designs, torque ripple reduction, soft-mounting and active cancellation 

 

Hybrid/ICE vehicle

Problem: Start/Stop shock, cylinder deactivation, acoustic harmonic resonances and clutchless rattle.

Goal: Centrifugal pendulum absorber (CPA) development, dual mass flywheel refinement, elastomer damper design and torque ripple cancellation. 

E-axle drive

Problem: Micro-jerk, gear whine, zipper noise, acoustic short circuits and inverter noise 

Goal: Skewing, harmonic injection, high contact ratio (HCR) gear design and double-decoupling.

mechanical engineering

High-resolution incremental encoders and acceleration sensors detect rolling deviations, torsional vibrations and vibrations in the time and spectral range.Our modular DAQ system provides dynamic angle of rotation and resonance analyses for control drive validation, coupling and gearbox optimisation and much more - to make your machine quieter, more durable and more efficient.

Single flank rolling test

Problem: Transmission error, frequency ghosting, gearbox noise and surface damage.

Objective: Reduced gear whine, reduced vibration, measure pitch error and predict gear singing. 

Roller gearbox

Problem: Roller skidding, excess scuffing, eccentricity and brinelling 

Goal: Correct pre-loading, inlet funnels and tapered roller bearing design 

#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 measurement 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 not only the theoretical basics and a detailed presentation of the software, but also practical demo measurements in your environment. 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 with trained personnel for all matters relating to ROTEC measurement technology, first-level support and sales enquiries.

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.

Need a customised solution?

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