Technical White Papers

Shaft encoders

Shaft Encoders & Bearingless Encoders

This short paper discusses shaft encoders and bearingless encoders; their relative merits and where design engineers might deploy each type.
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Frameless Resolvers

Frameless Resolvers versus Ring Encoders

This article discusses frameless resolvers and ring encoders; compares their merits and suggests an alternate approach.
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torque measurement

Torque measurement with angle sensors

This article reviews a technique for measuring torque with angle sensors which was first used in the 1950s is making a comeback.
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incremental encoder absolute encoders

Incremental Encoders Versus Absolute Encoders

Article reviewing incremental encoders, absolute encoders and pseudo-absolute encoders and their relative strengths and weaknesses.
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BiSS

BiSS – a CAD Jockey’s Guide

BiSS is a communications system used in industrial automation. It’s a way of exchanging digital data between different parts of a control system.
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Ring Encoder

The CAD Jockey’s Guide to Ring Encoders

Ring Encoder refers to a device which measures angular position or speed, has a large through hole and produces an electrical signal proportional to angle.
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Ultra-Slow Motion Control

This article looks at Ultra-slow speed motion control and, in particular, the critical role of position and speed sensors.
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Position Sensors – A Dummy’s Guide

This paper is for those who need to get up a learning curve quickly and gain a basic understanding of position sensing and position sensors.
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optical encoders

Optical Encoders Versus Inductive Encoders

An investigation into how optical encoders and inductive encoders work and the relative strengths and weaknesses of each technique.
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encoder

An Encoder Trade Secret Revealed

Trade secret which has become an unfortunate and widespread aspect of specmanship in the rotary sensor and angle encoder industry.
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Encoders Winter

Why Some Encoders Don’t Like Winter

Article investigates why optical and capactive encoders aren't suited to winter conditions and suggest alternative options.
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Custom sensors

‘Shapeability’ for Custom Position Sensor Requirements

Article investigating the role of custom position sensors and encoders for certain applications with bespoke specifications.
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Direct Drives Direct Sensors

Direct Drive Motors & Direct Sensors

Technical article compares and contrasts the use of direct drives & sensors to more traditional motor arrangements - recommending a new generation sensor. 
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capacitive sensors

A Comparison of Inductive and Capacitive Position Sensors

A comparison of capacitive sensors and inductive sensors, their relative benefits and weaknesses and new generation alternative.
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Inductively resonsant position sensors

Inductively Resonant Position Sensing

This article compares and contrasts traditional inductive position sensors and inductively resonant position sensors, also known as Incoders.
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SSI – A Masterclass for Engineers Choosing a Position Sensor

SSI – A Masterclass For Engineers Choosing a Position Sensor

This paper describes the Synchronous Serial Interface (SSI) used by many position sensors and controllers.
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Position Sensors for Safety Applications

Position Sensors for Safety Applications

Position sensors for safety applications - design approach for sensors in safety related applications covering self diagnostics, built-in-test and duplex.
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Position & Speed Sensors for High Vibration Environments

Position & Speed Sensors for High Vibration Environments

10 rules for design engineers selecting position and speed sensors that need to cope in shock and high vibration environments.
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angle conversion

Angle Conversion Tables

Angle Conversion Tables for high resolution position sensors in extreme environments.
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Why-do-engineers-dislike-potentiometers

Why do engineers dislike potentiometers?

Why do engineers dislike potentiometers? Next generation, non-contact inductive position sensors for hostile environments.
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Traditional Inductive Position Sensors versus New Generation Zettlex Sensors

Traditional Versus New Generation Inductive Position Sensors

Traditional v New Generation Inductive Position Sensors. Non-contact, high accuracy, sensors and encoders.
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True Cost of Potentiometers

The True Cost of Potentiometers

Potentiometers are still, by far, the most commonly used position sensor. But is their reputation for low cost justified?
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tandem encoder

Tandem Encoders

Tandem Encoders - next generation inductive encoders produced in either incremental or absolute forms. Tandem Encoder can produce a digital data stream.
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rugged sensor

Specification of Angle Sensors

Specification of Angle Sensors, insight into terminology for measurement performance and how to specific an angle sensor that is right for your application.
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Harsh Environment Application

Resolvers, Optical Encoders and Inductive Encoders

Review of Resolvers, Optical Encoders and Inductive Encoders examining the strengths and weaknesses of each and also offers some alternatives.
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Large diameter shaft measurement

Measuring the Rotation Angle of Large Diameter Shafts

Measuring the Rotation Angle of Large Diameter Shafts Rotary Encoder - a review of traditional approach and new, robust, more accurate inductive approach.
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Measuring Position or Speed in Harsh Environment

Measuring Position or Speed in Harsh Environments

High accuracy, non-contact inductive position sensors and encoders for measuring Position or Speed in Harsh Environments.
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inductive versus magnetic position sensors

Inductive Versus Magnetic Position Sensors

Comparison of Inductive and Magnetic Position Sensors, including Hall Effect, Magnetostrictive, Traditional Inductive and New Generation.
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Incremental versus Absolute

Incremental versus Absolute Sensors

A comparison of Incremental and Absolute Position Sensors with an overview to a unique non-contact inductive position sensing technique. 
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How Inductive Sensors Work

How Inductive Sensors Work

Article exploring how inductive sensors including Synchros, Resolvers, RVDTs, LVDTs work and their strengths and weaknesses. 
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Slab resolvers

Everything You Need to Know About Slab Resolvers

Reviewing slab resolvers and how they compare to optical encoders and new generation incoders for measuring position in harsh environments
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shaft speed

Accurate Measurement of Shaft Speed

Accurate Measurement of Shaft Speed, motion control; aircraft flight controls; radar antennae; and weapons control systems.
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Custom versus Standard Sensors

Custom versus Standard Sensors

Custom versus Standard Sensors - background to high resolution, precision, non-contact encoders and sensors for extreme environments.
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Choosing the right Position Sensor

Choosing the right Position Sensor

Choosing the right Position Sensor - evaluation of potentiometers, optical, magnetic, capacitive and inductive position sensors and encoders.
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Optical Encoder Accuracy

Are Optical Encoders as Accurate as you Think?

Technical article investigates optical encoder accuracy and how it compares to the new generation inductive encoders. 
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Accuracy, Resolution, Repeatability

Accuracy, Resolution, Repeatability

Accuracy, Resolution, Repeatability. These are crucial when selecting the right measuring for your application.
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Accurate Position Measurement in Varying Temperatures

Accurate Position Measurement in Varying Temperatures

A number of tips for engineers designing for accurate position measurement in varying temperatures. 
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