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QUESTIONS: 1. WHAT KIND OF ERRORS ARE THEY? 2. HOW TO AVOID THESE ERRORS IN MEASUREMENTS?

QUESTIONS: 1. WHAT KIND OF ERRORS ARE THEY? 2. HOW TO AVOID THESE ERRORS IN MEASUREMENTS?

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Subject name: Theory and design for Mechanical measurements

--- ### Errors in Static Calibration **During static calibrations, there are some errors between the output value and input value.** #### Diagrams Explanation 1. **Diagram 1: Hysteresis** - **Description:** - The left diagram illustrates the phenomenon of hysteresis. - It shows the difference in output value when the input value is increased (upscale) versus when it is decreased (downscale). - The output value does not directly follow the input value, leading to a loop-like shape. 2. **Diagram 2: Best Linear Fit** - **Description:** - The right diagram compares the actual data trend with the best linear curve fit. - The actual data points (represented by squares) do not perfectly align with the ideal linear trend, indicating an error in the measurement. 3. **Diagram 3: Device Range and Offset** - **Description:** - The left diagram shows the range of output values for a typical device. - It displays the maximum and minimum limits for the output value across the range of input values. - **Description:** - The right diagram illustrates a typical shift in the output value. - It shows how the nominal output value can shift higher or lower than expected due to variations in the measurement device. #### Questions 1. **What kind of errors are they?** - The diagrams illustrate several types of errors: - **Hysteresis Error:** The discrepancy between the upscale and downscale output values. - **Linear Error:** The deviation of actual data from the best linear fit. - **Range and Offset Error:** Variations in the output value range and shifts from the nominal value. 2. **How to avoid these errors in measurements?** - **Minimize Hysteresis:** - Use materials and components that exhibit low hysteresis behaviors. - **Improve Linear Fit:** - Collect more data points and apply advanced curve fitting techniques. - **Control Range and Offset:** - Regularly calibrate measurement devices. - Implement compensating algorithms to adjust for typical shifts and variations. --- By understanding these errors and taking appropriate actions, measurement accuracy and reliability can be significantly improved.
Transcribed Image Text:--- ### Errors in Static Calibration **During static calibrations, there are some errors between the output value and input value.** #### Diagrams Explanation 1. **Diagram 1: Hysteresis** - **Description:** - The left diagram illustrates the phenomenon of hysteresis. - It shows the difference in output value when the input value is increased (upscale) versus when it is decreased (downscale). - The output value does not directly follow the input value, leading to a loop-like shape. 2. **Diagram 2: Best Linear Fit** - **Description:** - The right diagram compares the actual data trend with the best linear curve fit. - The actual data points (represented by squares) do not perfectly align with the ideal linear trend, indicating an error in the measurement. 3. **Diagram 3: Device Range and Offset** - **Description:** - The left diagram shows the range of output values for a typical device. - It displays the maximum and minimum limits for the output value across the range of input values. - **Description:** - The right diagram illustrates a typical shift in the output value. - It shows how the nominal output value can shift higher or lower than expected due to variations in the measurement device. #### Questions 1. **What kind of errors are they?** - The diagrams illustrate several types of errors: - **Hysteresis Error:** The discrepancy between the upscale and downscale output values. - **Linear Error:** The deviation of actual data from the best linear fit. - **Range and Offset Error:** Variations in the output value range and shifts from the nominal value. 2. **How to avoid these errors in measurements?** - **Minimize Hysteresis:** - Use materials and components that exhibit low hysteresis behaviors. - **Improve Linear Fit:** - Collect more data points and apply advanced curve fitting techniques. - **Control Range and Offset:** - Regularly calibrate measurement devices. - Implement compensating algorithms to adjust for typical shifts and variations. --- By understanding these errors and taking appropriate actions, measurement accuracy and reliability can be significantly improved.
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