Experimental Verification of Real-Time Flow-Rate Estimations in a Tilting-Ladle-Type Automatic Pouring Machine
Abstract
:1. Introduction
2. Automatic Pouring Machine
3. Mathematical Models of Pouring Motion
3.1. Motor Model for the Tilting Ladle
3.2. The Pouring Process Model
3.3. Load Cell Model
3.4. Motor Model for Transferring the Ladle on the y- and z-Axes
3.5. Synchronous Control for Transferring and Rotating the Ladle
4. Compensation of Measured Weight by Load Cell
5. Flow Rate Estimation by Decentralization of Kalman Filters
5.1. The Design of Flow Rate Estimation
- Predict
- Update
5.2. Simulations
6. Other Flow-Rate Estimation Methods for Comparison
6.1. Flow-Rate Estimation by Differentiating Load Cell Data
6.2. Flow-Rate Estimation Using a Visible Camera
7. Experimental Verifications
8. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Conflicts of Interest
Abbreviations
CFD | Computational Fluid Dynamics |
SSKF | Steady State Kalman Filter |
EKF | Extended Kalman Filter |
DKFs | Decentralization of Kalman Filters |
DC | Direct Current |
IAE | Integral Absolute Error |
TV | Total Variation |
mTV | Modified Total Variation |
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Estimation Method | Tilting Angle Error at Start | Tilting Angle Error at Start |
---|---|---|
to Liquid Outflow +0 deg | to Liquid Outflow +3 deg | |
DKFs with Covariance of Process Noise in Equation (37) | ||
DKFs with Covariance of Process Noise in Equation (46) | ||
Differentiating Load Cell Data | ||
Visible Camera |
Estimation Method | Tilting Angle Error at Start | Tilting Angle Error at Start |
---|---|---|
to Liquid Outflow +0 deg | to Liquid Outflow +3 deg | |
DKFs with Covariance of Process Noise in Equation (37) | ||
DKFs with Covariance of Process Noise in Equation (46) | ||
Differentiating Load Cell Data | ||
Visible Camera |
Estimation Method | Tilting Angle Error at Start | Tilting Angle Error at Start |
---|---|---|
to Liquid Outflow +0 deg | to Liquid Outflow +3 deg | |
DKFs with Covariance of Process Noise in Equation (37) | ||
DKFs with Covariance of Process Noise in Equation (46) | ||
Differentiating Load Cell Data | ||
Visible Camera |
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Sueki, Y.; Noda, Y. Experimental Verification of Real-Time Flow-Rate Estimations in a Tilting-Ladle-Type Automatic Pouring Machine. Appl. Sci. 2021, 11, 6701. https://doi.org/10.3390/app11156701
Sueki Y, Noda Y. Experimental Verification of Real-Time Flow-Rate Estimations in a Tilting-Ladle-Type Automatic Pouring Machine. Applied Sciences. 2021; 11(15):6701. https://doi.org/10.3390/app11156701
Chicago/Turabian StyleSueki, Yuta, and Yoshiyuki Noda. 2021. "Experimental Verification of Real-Time Flow-Rate Estimations in a Tilting-Ladle-Type Automatic Pouring Machine" Applied Sciences 11, no. 15: 6701. https://doi.org/10.3390/app11156701
APA StyleSueki, Y., & Noda, Y. (2021). Experimental Verification of Real-Time Flow-Rate Estimations in a Tilting-Ladle-Type Automatic Pouring Machine. Applied Sciences, 11(15), 6701. https://doi.org/10.3390/app11156701