Low Cost Position Controller for Exhaust Gas Recirculation Valve System
Abstract
:1. Introduction
2. Mechanical Model of EGR Valve and Torque Measurement
2.1. Model Analysis of EGR Valve
2.2. Measurement Procedures of Spring and Friction Torque
- Perform speed control on the initial EGR valve position.
- Apply the speed reference from 10 rpm to 300 rpm.
- Measure the averaged current. The speed at which the lowest averaged current is observed is the Stribeck velocity. Repeat the experiment as necessary for gathering data.
- Control the motor using Stribeck velocity. The measured instantaneous current on steady state is the spring torque, with the assumption that the friction torque at Stribeck velocity can be ignored.
- Perform speed control started on each EGR valve position.
- Set up the small gain on the current controller in order to apply the ramp increasing current reference.
- Sudden current changes occur due to the position of the movement; measure the peak current point.
- Subtract the spring torque amount from the measurement in Step 3. The remaining value is the static friction torque.
- Perform speed control started on the initial EGR valve position.
- Apply the speed reference from 100 rpm and 300 rpm.
- Measure the instantaneous current on the steady state of each speed.
- Subtract the instantaneous current at 100 rpm from the current at 300 rpm.
- Divide 200 rpm from the result of Step 4 for removing the spring torque component.
- Multiply the speed from the result obtained in Step 5. This is the coulomb friction torque.
3. Proposed Position Controller
4. Experimental Results
5. Conclusions
Author Contributions
Acknowledgments
Conflicts of Interest
References
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Parameter | Value | Unit |
---|---|---|
Rated power | 200 | W |
Input voltage | 12 | V |
Max. current | 20 | A |
Rated speed | 500 | rpm |
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Bhuiyan, H.; Lee, J.-H. Low Cost Position Controller for Exhaust Gas Recirculation Valve System. Energies 2018, 11, 2171. https://doi.org/10.3390/en11082171
Bhuiyan H, Lee J-H. Low Cost Position Controller for Exhaust Gas Recirculation Valve System. Energies. 2018; 11(8):2171. https://doi.org/10.3390/en11082171
Chicago/Turabian StyleBhuiyan, Habib, and Jung-Hyo Lee. 2018. "Low Cost Position Controller for Exhaust Gas Recirculation Valve System" Energies 11, no. 8: 2171. https://doi.org/10.3390/en11082171
APA StyleBhuiyan, H., & Lee, J. -H. (2018). Low Cost Position Controller for Exhaust Gas Recirculation Valve System. Energies, 11(8), 2171. https://doi.org/10.3390/en11082171