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Optiwind Torque Test Rig

Direct From Site Clearance

Direct Site Clearance Price [?]
£ 1,400 (+ VAT)
Clearance ends
08 May 2017 14:00 GMT while stocks last
Part of a Direct Site Clearance
Pera Technology - Phase 1
Melton Mowbray, Leicestershire, UK
Stock No
Torque tester
New or Used
Used (Second Hand)
Process Application
Research and development
Melton Mowbray, Leicestershire, UK
External Dimensions (WxDxH mm)
2000 x 1000 x 650


The Optiwind test bed was designed to radically improve evaluation of wind turbine generators for demanding applications.

Optiwind was a venture backed start-up that developed a new class of wind turbine with a simple purpose - to deliver commercial scale, on-site electricity for an unsubsidised cost that is lower than the local grid.

Key to the researchers' experiments, and at the heart of the test bed is the Torq transducer.

Getting the right motor for a demanding application isn't exactly a hit and miss affair, but the performance curves supplied by the manufacturer can only tell you so much.

Beyond that, real world performance evaluation is needed, and this is where modern test beds come in, offering the ability to test actuators under a static load (such as a brake) and providing an important indicator of long term performance and reliability.

Even then, however, the overall picture is limited. Recognising the need for a test architecture that would look at all possible operating conditions, the Research Group set out to design a test bed that would measure and record an array of physical properties during both dynamic and non-linear load testing.

In operation, the load motor provides the dynamic test by generating various types of load, whilst the linkage creates the non-linear periodic load. The load profiles can be readily defined to simulate real world conditions for the test motor. An encoder is connected to the motor to provide position, velocity and acceleration data, while the torque sensor measures the torque between the load motor and the test motor.

The Surface Acoustic Wave based transducer is essentially a 'frequency dependent' strain gauge that measures the change in resonant frequency caused by an applied shaft strain. Two devices embedded on a shaft form part of a high frequency oscillator circuit. When the shaft is twisted, the resulting deformation of the substrate creates a frequency difference between two embedded SAW devices. The two frequencies produced by the SAW devices are mixed together to produce difference and sum signals. The difference signal is a measure of the induced strain due to the twisting moment, and from this the torque can be derived.


pdf icon Print / Download Optiwind Torque Test Rig Datasheet

Photographs taken prior refurbishment. Our refurbishment service is not available on all machines.