A New Sensorless Control Method Applied to Downhole Drilling Torque Motor
[1]Bai Guochang,Zhang Yuxin.A New Sensorless Control Method Applied to Downhole Drilling Torque Motor[J].Journal of Zhengzhou University (Engineering Science),2017,38(03):68-72.[doi:10.13705/j.issn.1671-6833.2016.06.010]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
38
Number of periods:
2017 03
Page number:
68-72
Column:
Public date:
2017-05-28
- Title:
- A New Sensorless Control Method Applied to Downhole Drilling Torque Motor
- Keywords:
-
sensorless; speed-independent; downhole drilling torque motor; low speed; winding flux linkage function
- CLC:
- -
- Abstract:
- This paper focused on the sensorless start-up strategy of a torque motor,especially,when a motor was at standstill or very low speed.It was well known that the signal was too small or contains too many noise signals to estimate a precise rotor position.By eliminating the function of error and noise,the simplified flux linkage function method could be obtained based on the traditional winding flux linkage function method principle.The simulation model and the experimental platform based on TMS320F28335 showed that the calculation amount was decreased and the dependence on the parameter was reduced compared with the traditional method.At low speed (60 r/min),the simplified flux function method could be used to ensure the motor running smoothly by calculating the phase change.
- References:
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