Calculating Non-linearity Error
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Linear And Nonlinear Equation Calculator
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& Utilities Manufacturing Marine & Offshore Transportation Materials Medical Jobs Games Videos Resources Webinars Electronics & Semiconductors Energy, Process & Utilities Manufacturing Marine & Offshore Transportation Materials Medical ENGINEERING.com has updated it's forum. linearity error calculation To post a question please visit the new Ask@ Forum. With a database of over 10000 questions the library will remain available for an extended period. Q&A hamza What is the percentage non-linearity error with a potentiometer? View All 8 years ago - 6 months left to answer. - 1 response - Report Abuse Respond to question 0 0 how to calculate linearity in excel 0 Share | Responses shai If I understand your question, you have a 550 Ohm pot with cursor at center, and the lower half of it loaded with a 10 Ohm resistor: Let's call the top half of the pot R1 = half of 550 or 275. Calculate the parallel of 275 and 10, call this R2. Now calculate the voltage Vout across the 10 Ohms using the voltage divider equation: 10/(R1+R2)=Rout/R2. With no 10 ohms load the Vout would be 5Volts. With the load it would be as you calculated it. The error is the ratio of the two voltages Vout/5 times 100, expressed as a percentage. 8 years ago Source: 0 0 ENGINEERING.com does not provide engineering advice. The Ask@ service is a forum for members to exchange ideas relating to the world of engineering. We caution users not to accept any responses that they receive without further validation, and not to rely on any engineering advice that they may get from other members of the Ask@ forum. ENGINEERING.com specifically disclaims any obligation to validate or verify any information posted within the Ask@ service. ENGINEE
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Nonlinearity Error Definition
| 5 Ratings | 4.60 out of 5 | Print Overview This how to calculate linearity error in excel tutorial is part of the National Instruments Measurement Fundamentals series. Each tutorial in this series, will teach
Linearity Calculation Formula
you a specific topic of common measurement applications, by explaining the theory and giving practical examples. This tutorial will cover sensors and the terminology associated with them. For http://www.engineering.com/Ask@/qactid/-1/qaqid/1320.aspx the complete list of tutorials, return to the NI Measurement Fundamentals Main page. Table of Contents Sensitivity Range Precision Resolution Accuracy Offset Linearity Hysteresis Response Time Dynamic Linearity 1. Sensitivity The sensitivity of the sensor is defined as the slope of the output characteristic curve (DY/DX in Figure 1) or, more generally, the minimum input of physical http://www.ni.com/white-paper/14860/en/ parameter that will create a detectable output change. In some sensors, the sensitivity is defined as the input parameter change required to produce a standardized output change. In others, it is defined as an output voltage change for a given change in input parameter. For example, a typical blood pressure transducer may have a sensitivity rating of 10 mV/V/mm Hg; that is, there will be a 10-mV output voltage for each volt of excitation potential and each mm Hg of applied pressure. Sensitivity Error The sensitivity error (shown as a dotted curve in Figure 1) is a departure from the ideal slope of the characteristic curve. For example, the pressure transducer discussed above may have an actual sensitivity of 7.8 mV/V/mm Hg instead of 10 mV/V/mm Hg. Back to Top 2. Range The range of the sensor is the maximum and minimum values of applied parameter that can be measured. For example, a given pressure sensor may have a range of -400 to +400 mm Hg. Alter
may be challenged and removed. (December 2008) (Learn how and when to remove this template message) Demonstrates A. Differential Linearity where a change in the input produces a corresponding change in output and B. Differential Non-linearity, https://en.wikipedia.org/wiki/Differential_nonlinearity where the relationship is not directly linear Differential nonlinearity (acronym DNL) is a term describing the deviation between two analog values corresponding to adjacent input digital values. It is an important specification for measuring error in a digital-to-analog converter (DAC); the accuracy of a DAC is mainly determined by this specification. Ideally, any two adjacent digital codes correspond to output analog voltages that are exactly linearity error one Least Significant Bit (LSB) apart. Differential non-linearity is a measure of the worst case deviation from the ideal 1 LSB step. For example, a DAC with a 1.5 LSB output change for a 1 LSB digital code change exhibits 1⁄2 LSB differential non-linearity. Differential non-linearity may be expressed in fractional bits or as a percentage of full scale. A differential non-linearity greater than 1 LSB linear and nonlinear may lead to a non-monotonic transfer function in a DAC.[1] It is also known as a missing code. Differential linearity refers to a constant relation between the change in the output and input. For transducers if a change in the input produces a uniform step change in the output the tranducer possess differential linearity. Differential linearity is desirable and is inherent to a system such as a single-slope analog-to-digital converter used in nuclear instrumentation. Contents 1 Formula 2 See also 3 References 4 External links Formula[edit] DNL(i) = V out ( i + 1 ) − V out ( i ) ideal LSB step width − 1 {\displaystyle {\text{DNL(i)}}={{V_{\text{out}}(i+1)-V_{\text{out}}(i)} \over {\text{ideal LSB step width}}}-1} See also[edit] Integral nonlinearity References[edit] ^ INL and DNL definitions "A DNL error specification of less than or equal to 1LSB guarantees a monotonic transfer function with no missing codes. " http://www.maxim-ic.com/app-notes/index.mvp/id/283 External links[edit] INL/DNL Measurements for High-Speed Analog-to-Digital Converters (ADCs) Application Note 283 by Maxim Understanding Data Converters This electronics-related article is a stub. You can help Wikipedia by expanding it. v t e Retrieved from "https://en.wikipedia.org/w/index.php?title=Differential_nonlinearity&oldid=626591593" Categories: Digital signal processingElectronics stubsHidden categories: Articles needing additional references from December 2008All arti
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