Analog Output Module Offset Gain Auto-Setting
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Solution Overview
Problem
Conventional methods for setting offset gains in analog output modules require operator prediction and manual input, leading to increased operation time and decreased accuracy due to potential errors.
Innovation Solution
A method that automatically calculates and sets offset gains using an offset gain inverse function, reducing operator intervention and improving control performance and stability by calculating voltage and current offset gains through predefined equations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If operator prediction and manual input method is used for setting offset gains, then the process allows flexibility in input, but the operation time increases and accuracy decreases due to potential errors
Solution Approach 1:
The system performs automatic offset gain setting through self-measurement and self-calculation. The analog output module measures its own output analog signal values, and the MPU automatically calculates the offset gains using predefined inverse functions, eliminating the need for operator intervention in the measurement and calculation processes.
Solution Approach 2:
The manual mechanical process of operator prediction and input is replaced with an automated electronic system. The MPU executes automated measurement, calculation, and setting operations using digital signal processing and predefined mathematical functions, substituting human operation with computational automation.
2Ease of operation
If operator prediction and manual input method is used for setting offset gains, then the process allows flexibility in input, but the accuracy decreases due to potential errors
Solution Approach 1:
The system implements a feedback mechanism where the analog output module measures its own output signal values, feeds this information back to the MPU, and uses the feedback data to automatically calculate and set the accurate offset gains. This closed-loop feedback ensures high accuracy by using actual measured values rather than operator predictions.
Solution Approach 2:
The system performs self-measurement and self-calculation for offset gain setting. The analog output module measures its own output analog signal values, and the MPU automatically calculates the offset gains using predefined inverse functions, eliminating the need for operator intervention in the measurement and calculation processes.
3Productivity
If automatic calculation using offset gain inverse function is implemented, then operation time is reduced and accuracy is improved, but the device complexity increases
Solution Approach 1:
The offset gain inverse function serves multiple purposes: it automatically calculates both voltage offset gains and current offset gains, handles different output ranges, and works for all channels of the analog output module. This universal function reduces the need for separate calculation methods for different scenarios.
Solution Approach 2:
The system changes the functional parameter from manual prediction to automated mathematical calculation using predefined inverse functions. By transforming the offset gain setting process into a parameter-based computational problem, the system achieves automation while managing complexity through standardized mathematical relationships.
Data Source
AI summary
A method for setting an offset gain of analog output module configured to convert a digital signal outputted from an MPU (Micro Processing Unit) to an analog signal and to output the converted analog signal is proposed, the method including outputting, by the MPU, a digital signal value to the analog output module, calculating an offset gain by measuring, by the analog output module, an analog signal value outputted by receipt and conversion of the digital signal value, and entering the measured analog signal value to an offset gain inverse function preset by the MPU, and setting the offset gain of the analog output module as the calculated offset gain.