Reference Articles 1 - 71 of 71
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What Is An IP Rating, And What Does It Mean?
From: Encoder Products CompanyDescription: IP Ratings are a system designed to classify the degrees of protection or sealing that your electrical component has from foreign objects, such as fingers, tools, dust, and moisture. This system is ...
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When to Choose the CE Mark
From: Encoder Products CompanyDescription: The CE (Conformite European) mark indicates that a product complies with any or all of the European Union (EU) directives, and will affect you only if your system is to be sold in Europe. CE does not ...
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A New Approach to Interpolated High Resolution Encoders
From: Encoder Products CompanyDescription: The key to the successful operation of an optical encoder is the optics system, which consists of a light source, a resolution disk, and a sensor. During the operation of the encoder, the resolution ...
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Accuracy of Encoders
From: Encoder Products CompanyDescription: Accuracy is defined as how close an actual pulse is to the theoretical perfect position. Many applications require encoders with a high degree of accuracy to function well. With poor accuracy, ...
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Applying Encoders
From: Encoder Products CompanyDescription: Encoders provide velocity, acceleration, direction, and position feedback to motion systems. Two basic types of feedback are absolute and incremental. Absolute encoders report unique position ...
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Encoders in Inhospitable Environments
From: Encoder Products CompanyDescription: Encoders are often times called to duty in an environment that is not conducive to a long life. For protection against corrosion of the housing, shafts, connectors, etc., encoder housings should be ...
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Gray Codes, Natural Binary Codes, and Conversions
From: Encoder Products CompanyDescription: Gray Code is a form of binary that uses a different method of incrementing from one number to the next. With Gray Code, only one bit changes state from one position to another. This feature allows a ...
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Is a Modular Encoder Right for Your Application?
From: Encoder Products CompanyDescription: Modular, or "Kit", encoders are a specialized category of rotary encoders. The difference between a modular encoder and a standard encoder is that the modular encoder does not incorporate internal ...
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Noise and Signal Distortion Considerations
From: Encoder Products CompanyDescription: When the electrical signals leave the encoder, they are "clean" in the sense of being noise free. However, by the time these signals reach their intended destination they can be degraded by radiated ...
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Noise Effects on Signals
From: Encoder Products CompanyDescription: Electrical noise generated by AC power, electric motors, fluorescent lighting, relays, and many other sources can cause a plethora of problems in electrical systems. For the encoder in your system ...
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Noise Suppression of Differential Signals
From: Encoder Products CompanyDescription: An encoder is an electro-mechanical transducer that converts mechanical rotary motion into digital signals for the control of machinery. The encoder produces a square wave signal as the shaft rotates. ...
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Shaft Loading and Sealing vs. Bearing Life Expectancy
From: Encoder Products CompanyDescription: The mechanical life of an encoder is mainly determined by the life of the unit's bearings. Several factors affect bearing life, including shaft loading, heat, ingress and rotational speed. Shaft ...
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The Basics Of How An Encoder Works
From: Encoder Products CompanyDescription: Before you can fully understand how an encoder works, you should first understand what an encoder is and what it does. An encoder is a sensing device that provides feedback from the physical world-- ...
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SECRETS BEHIND WIND POWER
From: POSITAL - FRABADescription: Wind turbines have become an increasingly familiar part of the landscape. And from blade manufacturers and wind-farm designers to wind turbine operators and power providers, the companies that help ...
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How Sensors Affect Wind Turbine Performance
From: POSITAL - FRABADescription: Control systems are important to wind turbine performance because wind turbines have relatively low operating costs, but the initial capital cost can be high. Therefore, the key to profitability is to ...
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Everything you always wanted to know about slab resolvers but were afraid to ask....
Description: The Chief Engineer says "We could use a slab resolver for that" and you say: "That's a great idea boss" but you are actually thinking: "If I ask him what a slab resolver is I'm going to look like an ...
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How to confuse engineers: Resolvers, Encoders, Transducers
Description: Resolvers are good. Encoders are good. But which is the best? There s only one way to find out this article examines the strengths and weaknesses of each and also offers some alternatives. A resolver ...
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Case Study: TONiC™ incremental encoders have star potential for Astrosysteme Austria
From: RenishawDescription: The digital age has led to a quantum leap in astrophotography, making even the furthest galaxies accessible to professional astronomers and observatories. Now, thanks to Astrosysteme Austria (ASA), ...
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CASE STUDY - IRON ORE PRODUCTION
From: Leine & Linde ABDescription: In the tough environment at the Kiruna mine, it is essential for the pulse encoders providing feedback on location and speed to live up to expectations for problem-free production processes. Leine & ...
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CASE STUDY - OIL & GAS - General Tubular Services, Germany
From: Leine & Linde ABDescription: General Tubular Services GmbH in Vechta near Osnabrück in Germany has been using optical incremental encoders from the Swedish manufacturer Leine & Linde since its foundation. The general manager of ...
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Case Study - Paper Mill
From: Leine & Linde ABDescription: At the Stora Enso paper mill in Hylte, an unplanned production stoppage costs around SEK 70,000 an hour. In order to avoid encoders causing such stoppages, Leine & Linde has developed a Heavy Duty ...
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CASE STUDY - STEEL PRODUCTION
From: Leine & Linde ABDescription: At Outokumpu's hot rolling mill in Avesta they have chosen Leine & Linde products for speed control and position control. The mill produces top-quality stainless steel - a task that demands as safe ...
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CASE STUDY - WIND POWER - Siemens Wind Power, Denmark
From: Leine & Linde ABDescription: Wind power is the fastest-growing renewable energy source in the world. Siemens Wind Power in Denmark is one of the players in the wind power industry to have chosen Leine & Linde to supply pulse ...
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CASE STUDY - WOOD INDUSTRY, Rauch Spanplattenwerk, Germany
From: Leine & Linde ABDescription: Rauch Spanplattenwerk (the Rauch chip boards factory) in Germany, has been using automatic production equipment from a Flensburg machinebuilding and plant-engineering company since 1998. These ...
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The art of choosing the right shaft coupling
From: Leine & Linde ABDescription: To put it in simple terms, the purpose of a shaft coupling is to transfer rotational force from one shaft to another. To do this effectively, the coupling must have a high torsional rigidity. Factors ...
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Enabling Technologies Armored Vehicle Slip Ring
From: Moog Components GroupDescription: There are five key technologies that could be considered "enabling" for current, state-of-the-art armored vehicle turret rotary joints 1) the fiber brush contact system; 2) fluid rotary joint (FRU) ...
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Magnetic Alternative to Optical Encoding
From: Phoenix America, Inc.Description: Incremental encoders using magnetic technologies have been around a long time. Because of their robust nature, automotive designers have been using Low Resolution Magnetic Encoders for years in ...
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Optimized Scanning in Absolute Rotary Encoders
From: HEIDENHAIN CorporationDescription: Rotary encoders for electrical drives are subject to high requirements: they are expected to function reliably and provide dependable measurement data in spite of their often harsh environments. The ...
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Replacing Linear Encoders with Magnetostrictive Sensing (.pdf)
From: MTS SensorsDescription: Designing with Magnetostrictive Sensors opens many options. This article explores how Design Engineers are increasingly finding that magnetostrictive linear position sensors can replace their encoders ...
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Important Considerations When Selecting Digital Encoder Outputs (.pdf)
From: Encoder Products CompanyDescription: There are several important factors to consider when choosing the digital output for your encoder feedback system, but navigating through the options doesn't have to be difficult. ...
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Innovative Encoders for Demanding Applications (.pdf)
From: POSITAL - FRABADescription: As tools for measuring rotary motion in machinery, magnetic rotary encoders have a lot to offer. They are compact, robust and relatively inexpensive. For these reasons, simple magnetic rotation ...
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Advancements in Technology for Multiturn Encoders
From: TURCK Inc.Description: A single turn encoder is a transducer that precisely measures angular displacement over 360 degrees and assigns a value to each position. These values can be decimal, binary or grey code and the ...
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Un-tether Your Encoder: Go Wireless
From: BEI SensorsDescription: Encoders come in a wide variety of sizes, accuracies, and ranges based upon just as wide a variety of mechanical and optical technologies. And you can pay as much or little as you wish. But all ...
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Mercury Encoders: Design Guidelines for Customer Supplied Hubs (.pdf)
From: MicroE SystemsDescription: MicroE Systems offers standard hubs for each of our standard rotary scales. Should customers want to design a hub themselves, this guidline describes the key factors that should be incorporated into ...
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Mercury Encoders: Alignment of Rotary Scales (.pdf)
From: MicroE SystemsDescription: This document describes two different methods of aligning rotary scales; 1. optically centering the grating pattern track using a CCD camera; 2. using two sensors to "electrically" center the grating. ...
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Mercury Encoders: Custom Scales - Special Sizes and Rotary Segments (.pdf)
From: MicroE SystemsDescription: Mercury Encoders: Custom Scales - Special Sizes and Rotary Segments This data sheet provides formulas for calculating custom linear, rotary, and rotary segment dimensions. ...
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Guide to Interfacing Newall Incremental Linear Encoders (SHG and MHG Series) with Other Manufacturers' Displays
From: Newall Electronics, Inc.Description: Our incremental linear encoders are capable of interfacing with most displays. This is a partial compatibility list detailing some commonly found models. ...
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Guide To Understanding Newall's Spherosyn and Microsyn Linear Feedback Encoders
From: Newall Electronics, Inc.Description: Spherosyn was originally developed in the early 1970's by a team of Newall engineers based in Peterborough, England. The objective was to develop a non-contact encoder capable of withstanding the ...
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KEELOQ® Encoders Oscillator Calibration
Description: Several KEELOQ® Encoders of recent introduction, offer the ability to calibrate the internal RC clock oscillator, upon which all the device timings are based. At the time of writing this ...
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Implementation of a DSP-based 20-bit High Resolution Quasi-Absolute Encoder for Low-Speed Feedback Control Applications - White Paper (.pdf)
From: Avago TechnologiesDescription: Absolute encoders using optical technology often face limitations in resolution and size. For example, to achieve a higher resolution of up to 16-bits, the absolute encoder has to be combined with an ...
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KEELOQ Code Hopping Decoder Using Secure Learn
Description: All KEELOQ encoders use the KEELOQ code hopping technology to make each transmission by an encoder unique. The encoder transmissions have two parts. The first part changes each time the encoder is ...
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KEELOQ® CRC Verification Routines
Description: All of the KEELOQ Encoders share the same standard code word format composed of a basic set of 65 bits of information. Although, the Advanced Encoders (e.g. HCS360, HCS361) supplement that set with ...
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Encoders for Hazardous Locations
From: Dynapar Corp.Description: With today's widespread demand for energy, oil exploration and production are critical to the global economy. Drilling companies and equipment manufacturers are continually looking for ways to improve ...
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Encoders, Bearings and Reliability
From: Renco Encoders, Inc.Description: Some rotary encoders are designed with bearings and some are not. Over the years, bearing manufacturing has improved, and consequently the reliability of bearings has generally improved. Still, there ...
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Maximize Motor Efficiency with Encoder Feedback
From: Renco Encoders, Inc.Description: When comparing all the different types of electric motors currently available; the Permanent Magnet Brushless DC Servomotor (PMBDC) can provide the highest continuous torque density (i.e., torque ...
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Resolvers vs Encoders for Motion Control
From: Renco Encoders, Inc.Description: The phrase "more precise control" would generally drive the solution towards an encoder over a resolver. The application of dry food packaging however might tend to drive it back towards a resolver. ...
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Commutation of a BLDC Motor with Various Pole-Pairs Can Be Simplified By Using Absolute Encoder Feedback - White Paper (.pdf)
From: Avago TechnologiesDescription: Brushless Direct Current (BLDC) motors are gaining popularity and larger market acceptance. BLDC motors are used in industries such as Industrial Automation Equipments, Consumer, Medical, Automotive, ...
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Mechanical Encoders with Extended Cycle Rotation Lives Now Rival Optical Encoders at Much Lower Cost
From: ELMA Electronic Inc.Description: As the electronic products industry grows more competitive, manufacturers are seeking greater economy in the manner in which they manufacture, as well as cost effective alternatives to expensive ...
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Addressing Encoder Error
From: BEI SensorsDescription: Encoders are widely used to help control machine position and speed. Typical encoder output, a series of quadrature signals, consists of two full square waves, offset by 90° in phase. The number of ...
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Linear Encoders - Out With Glass, In With Steel
From: BEI SensorsDescription: Rotary and linear encoders are standard equipment in today's automated motion systems. Both types, generally, are optically based, relying on light passing through or reflecting off a scale and then ...
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Renishaw Encoders Ride a Controlled Explosion
From: RenishawDescription: In Stanley Kubrick's classic film Dr. Strangelove Slim Pickens was dropped from the aeroplane riding a bomb. If he'd been riding a motorcycle then he would certainly have been astride a KTM Nitro ...
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Eliminating Damage from Motor Shaft Currents Through Tachometers and Encoders
Description: Since the introduction of variable speed electronic controls for DC and AC motors, users have noted a troubling problem; voltage potential is sometimes induced on the shaft of the motor. ...
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Optical Incremental and Absolute Rotary Encoders
Description: The purpose of an encoder is to act as a position feedback device as part of an integrated control system. The encoder is an electro-optomechanical device that attaches to a rotating shaft providing ...
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Measuring Length and Rate Using Quadrature for an Oil Drilling Operation
From: Laurel Electronics, Inc.Description: Floating oil drilling platforms must be positioned accurately over undersea oil deposits before the platform's four legs can be dropped to secure the platform. Fine position control is achieved by ...
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Optical Rotary Encoders: The Basics
From: Baumer Ltd.Description: On every factory, and on every shop floor, something is rotating and someone wants to monitor it. Enter the optical rotary encoder. Encoders transform mechanical rotary motion into a sequence of ...
- Applying Encoder Communications to Your Design
- Let's Talk Accuracy
- Virtual Absolute™ Technology
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Encoders for Brushless Motor Commutation
From: Renco Encoders, Inc.Description: The process of steering current through the appropriate motor windings in order to produce output torque is called commutation. In brush motors, commutation is accomplished electro-mechanically via ...
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Glossary of Encoder Terms
From: Renco Encoders, Inc.
- Glossary of Encoder Terms
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How Does an Optical Encoder Work?
From: POSITAL - FRABADescription: The Optical Encoders typically consist of a rotating and a stationary member. The rotor is usually a metal, glass, or a plastic disc mounted on the encoder shaft. The disc has some kind of optical ...
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Linear Array: Position Detection Using Maximal Length Sequences
Description: What type of optical encoding technique can be used with linear sensor arrays to perform position sensing with high accuracy, with high tolerance to wobble and misalignment? Binary encoded disks are ...
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Motion Control and Encoder Technology: A Tutorial
From: Baumer Ltd.Description: Sensors and encoders are used everyday in manufacturing environments and high precision equipment to monitor the proximity or presence of an object, as well as the position, distance, direction, and ...
- Optical Encoder Technical Articles
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Pros and Cons of Absolute vs. Incremental Rotary Encoders
From: POSITAL - FRABADescription: An incremental encoder simply generates pulses proportional to the position. The principle of the incremental measuring system is the scanning of a line pattern on a glass or plastic disc (see Image ...
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Resolvers - The Feedback Problem-Solvers in Harsh Environments
From: Empire Magnetics Inc.Description: Resolvers are wonderful! Most of all, they are very rugged, withstanding shock and vibration, thermal shock and high and low temperatures with ease. They will reliably perform in vacuum and pressure ...
- Square Waves And Pulses: A Clarification
- Understanding Quadrature
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Understanding Resolvers and Resolver-to-Digital Conversion
From: Admotec Inc.Description: A resolver is a position sensor or transducer which measures the instantaneous angular position of the rotating shaft to which it is attached. Resolvers and their close cousins, synchros, have been in ...
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Various Interfaces for Rotary Encoders
From: POSITAL - FRABADescription: The wiring of multiple bit parallel encoders for a multi-axis application is very time consuming. The synchronous-serial-interface is an alternative interface option for such applications. How it ...
