scholarly journals Improvement in thrust force estimation of solenoid valve considering minor hysteresis loop

AIP Advances ◽  
2016 ◽  
Vol 7 (5) ◽  
pp. 056607 ◽  
Author(s):  
Myung-Hwan Yoon ◽  
Yun-Yong Choi ◽  
Jung-Pyo Hong
Keyword(s):  
Hysteresis Loop ◽  
Thrust Force ◽  
Solenoid Valve ◽  
Force Estimation ◽  
Minor Hysteresis Loop

Barkhausen noise power versus size of a minor hysteresis loop

1973 ◽  
Vol 44 (10) ◽  
pp. 4739-4742 ◽  
Author(s):  
John A. Baldwin ◽  
Frederick Milstein
Keyword(s):  
Hysteresis Loop ◽  
Barkhausen Noise ◽  
Noise Power ◽  
A Minor ◽  
Minor Hysteresis Loop

Approach to a Limiting Cycle in Thermally Relaxing Media

SPIN ◽  
2015 ◽  
Vol 05 (01) ◽  
pp. 1550001
Author(s):  
Ivo Klik ◽  
Ching-Ray Chang
Keyword(s):  
Magnetic Field ◽  
Steady State ◽  
Hysteresis Loop ◽  
Point Of View ◽  
Exponential Dependence ◽  
Arbitrary State ◽  
Superparamagnetic Particle ◽  
Thermally Activated ◽  
Limiting Cycle ◽  
Minor Hysteresis Loop

The thermally activated dynamics of an uniaxial superparamagnetic particle are studied here from the point of view of approach towards a steady state minor hysteresis loop representing a limiting cycle. The particle is initially at an arbitrary state, and is driven by a sufficiently small external applied ac magnetic field till the limiting minor hysteresis loop is reached with a desired precision. The number of periods required to reach the limiting cycle is found to satisfy an Arrhenius-type law, with an exponential dependence on the inverse ambient temperature. We tentatively associate this result with energy dissipation, its origin, however, remains quite unclear.

Minor Hysteresis Loop in Fe Metal and Alloys

2004 ◽  
Vol 73 (6) ◽  
pp. 1567-1575 ◽  
Author(s):  
Seiki Takahashi ◽  
Lefu Zhang
Keyword(s):  
Hysteresis Loop ◽  
Minor Hysteresis Loop ◽  
Metal And Alloys

Precise Cutting Force Estimation by Hybrid Estimation of DC/AC Components

2020 ◽  
Author(s):  
Taiki Sato ◽  
Shuntaro Yamato ◽  
Yasuhiro Imabeppu ◽  
Naruhiro Irino ◽  
Yasuhiro Kakinuma
Keyword(s):  
Cutting Force ◽  
Thrust Force ◽  
End Milling ◽  
Moving Average ◽  
Low Frequency ◽  
Friction Model ◽  
Ball Screw ◽  
Estimation Accuracy ◽  
Force Estimation ◽  
Feed Direction

Abstract External sensor-less cutting force estimation using a load-side disturbance observer (LDOB) has potential to estimate the cutting force with high accuracy in both feed and cross-feed directions. However, the accuracy of its low frequency components in feed direction decrease due to effect of the friction and heat of a ball-screw-driven stage. In this study, DC and AC components of the cutting force is estimated by different methods; friction-compensated motor thrust force and LDOB, and the cutting force was estimated in real time by hybridizing them. In particular, regarding the friction model, the dynamic and static characteristics of the friction force in each axis (X, Y, Z) were identified from the idling test results. In addition to the model that depends on the velocity, the characteristics of the friction that depend on the position was also identified and considered when compensating for the motor thrust force. Then, a simple moving average filter with an appropriate window length is applied to the cutting force by LDOB and motor thrust force, and the DC component error of LDOB is corrected by that of motor thrust force. The validity of the proposed method was evaluated through end-milling tests. The experimental results showed that estimation accuracy of cutting force using the proposed method can be greatly improved in feed directions. On the other hand, in cross-feed direction, the cutting estimation was performed using the conventional LDOB.

Minor hysteresis loop phenomena in particulate recording media

2002 ◽  
Vol 91 (10) ◽  
pp. 8742 ◽  
Author(s):  
M. M. El-Hilo ◽  
A. L. Al-Momnee ◽  
S. A. Bakar
Keyword(s):  
Hysteresis Loop ◽  
Recording Media ◽  
Minor Hysteresis Loop
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