A new Ω type cotton ring and traveller is introduced.The idea of its design is based on thefacts that running travellers deviate from normal profile in three coordinate directions and such adeviation can be utilized ...A new Ω type cotton ring and traveller is introduced.The idea of its design is based on thefacts that running travellers deviate from normal profile in three coordinate directions and such adeviation can be utilized when the balloon expands.The contact between ring and traveller at outerrace can be increased to prevent the balloon from expanding and the traveller from continuous in-clination.Consequently,the wear of inner corner of ring can be reduced.This proves the maincourse of deterioration of ring.With small sized balloon,the outer contact diminishes.The yarntension is thus adjusted and average tension is cut down.Experiments on 13 and 29 texcotton-polyester yarn spinning prove the above idea correct.With the wear of ring greatly reduced,running life is more than doubled,end breakage rate falls 30% and power consumption falls 2%.The economic profit,estimated by pilot test,is an increase of production 6.1% and 130,000 YuanRenminbi per ten thousand apindles each year.展开更多
Purpose The purpose is to reduce the power consumption of FCD array without changing the performances of the detector substantially.Method The traditional FCD driver circuit adopts push-pull configuration output struc...Purpose The purpose is to reduce the power consumption of FCD array without changing the performances of the detector substantially.Method The traditional FCD driver circuit adopts push-pull configuration output structure circuit.When the drive circuit outputs high level voltage,it will charge the pixel capacitance of the FCD.Then,at the low output level,the charge on the capacitor will be shorted to ground.This paper utilizes an LC resonance driving technique.When the FCD is drived by low-level voltage,the charge on the pixel capacitor will not be shorted to the ground,instead the charge are transfer and stored on the inductor and will be reused when the FCD is drived by the high-level voltage.Results Based on this principle,we design a new FCD driver circuit.It can effectively reduce the power consumption up to 70%.We also compare the X-ray energy resolution of this new driver circuit to that of normal driver circuit.In normal driver circuit,the energy resolution is 228 eV@8.04 keV and the charge transfer efficiencies is 0.99994,in this new driver circuit,the energy resolution is 256 eV@8.04 keV and the charge transfer efficiencies becomes 0.99985.Conclusion There is no substantial change in energy resolution and it meets our requirements in space application well.In addition,the new driver circuit is stable and easy to implement.展开更多
文摘A new Ω type cotton ring and traveller is introduced.The idea of its design is based on thefacts that running travellers deviate from normal profile in three coordinate directions and such adeviation can be utilized when the balloon expands.The contact between ring and traveller at outerrace can be increased to prevent the balloon from expanding and the traveller from continuous in-clination.Consequently,the wear of inner corner of ring can be reduced.This proves the maincourse of deterioration of ring.With small sized balloon,the outer contact diminishes.The yarntension is thus adjusted and average tension is cut down.Experiments on 13 and 29 texcotton-polyester yarn spinning prove the above idea correct.With the wear of ring greatly reduced,running life is more than doubled,end breakage rate falls 30% and power consumption falls 2%.The economic profit,estimated by pilot test,is an increase of production 6.1% and 130,000 YuanRenminbi per ten thousand apindles each year.
文摘Purpose The purpose is to reduce the power consumption of FCD array without changing the performances of the detector substantially.Method The traditional FCD driver circuit adopts push-pull configuration output structure circuit.When the drive circuit outputs high level voltage,it will charge the pixel capacitance of the FCD.Then,at the low output level,the charge on the capacitor will be shorted to ground.This paper utilizes an LC resonance driving technique.When the FCD is drived by low-level voltage,the charge on the pixel capacitor will not be shorted to the ground,instead the charge are transfer and stored on the inductor and will be reused when the FCD is drived by the high-level voltage.Results Based on this principle,we design a new FCD driver circuit.It can effectively reduce the power consumption up to 70%.We also compare the X-ray energy resolution of this new driver circuit to that of normal driver circuit.In normal driver circuit,the energy resolution is 228 eV@8.04 keV and the charge transfer efficiencies is 0.99994,in this new driver circuit,the energy resolution is 256 eV@8.04 keV and the charge transfer efficiencies becomes 0.99985.Conclusion There is no substantial change in energy resolution and it meets our requirements in space application well.In addition,the new driver circuit is stable and easy to implement.
