The accuracy of initial rotor position detection is important for senseless control, meanwhile, high frequency signal injection takes its advantages for its simple principle, small calculation amount and good real-tim...
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Recent years have witnessed the successful application of domain adaptive methods to tackle intelligent fault diagnosis of rotating machinery under variable working conditions. However, existing work always ignores th...
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Air contamination caused by the ammonia slip phenomenon has gradually captured the researcher’s extensive *** effective strategy for controlling fugitive NH_(2)is critical to improving the air quality and living *** ...
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Air contamination caused by the ammonia slip phenomenon has gradually captured the researcher’s extensive *** effective strategy for controlling fugitive NH_(2)is critical to improving the air quality and living *** the present work,CuO_(x)/La_(2)Ce_(2)O_(7)composite as a potential candidate catalyst is synthesized through the electrostatic adsorption method for the selective catalytic oxidation(SCO_(2))of NH_(2)to *** 5%Cu Ox/La_(2)Ce_(2)O_(7)exhibits the best catalytic activity(T=243℃)and ammonia conversion *** improvement of performance is mainly attributed to the superficial connection of[Ce-O-Cu],which enhances the capturing ability of ammonia molecule and accelerates the dissociating efficiency of N–H bonding for Nevolution,*** work provides a facile method to synthesis pyrochlore-like composite catalyst of NH_(2)-SCO_(2) for solving the problem of ammonia slip pollution in the future.
Detecting the openable parts of articulated objects is crucial for downstream applications in intelligent robotics, such as pulling a drawer. This task poses a multitasking challenge due to the necessity of understand...
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This paper presents a robust control approach for permanent magnet synchronous motors. The nonlinear model of these motors includes two voltage inputs in d-q coordinates and two outputs: speed and current in the d dir...
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Clarifying the climate change effects on the radial growth of trees has implications for sustainable forest management,especially under global *** investigate tree growth responses to regional climate change of Xiaowu...
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Clarifying the climate change effects on the radial growth of trees has implications for sustainable forest management,especially under global *** investigate tree growth responses to regional climate change of Xiaowutai Mountain,four Chinese pine(Pinus tabulaeformis)ring-width index chronologies were established at different elevations(1290–1600 m).Species growth trends were estimated using climate change projections derived from global climate *** results show:(1)the four ring-width chronologies exhibited strong statistical characteristics,making them suitable for dendroclimatology *** growth-climate relationships were highly consistent,showing a negative correlation with previous September temperatures and current May–June temperatures,as well as a positively correlated with precipitation and Palmer Drought Severity Index during the corresponding period;and(2)climate change scenarios revealed that temperature will gradually increase on the Xiaowutai Mountain,and only a slight variation in precipitation is *** pine radial growth may show a decline under future climate change.
Modeling power electronic converters is of great importance for verifying the stability and power quality of the power systems containing multiple power electronics devices. However, due to complicated inner structure...
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Modern control theory has developed vigorously so far, and most of them are still the PD type controller. However, PID control is still applied in most practical industries. Therefore, the PD type feedback control in ...
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This paper considers the optimal control problem of steering a Dubins vehicle with a decaying speed that depends linearly on the turn-rate to a terminal point and heading with maximum kinetic energy. Pontryagin’s min...
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As members of doubly salient magnetless linear machines,linear variable flux reluctance(LVFR)and wound field flux reversal(LWFFR)machines inherit the merits of conventional magnetless linear machines such as low cost,...
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As members of doubly salient magnetless linear machines,linear variable flux reluctance(LVFR)and wound field flux reversal(LWFFR)machines inherit the merits of conventional magnetless linear machines such as low cost,high flux adjustment capability and high ***,like linear switched reluctance machine,they have a very simple and compact long secondary,which are very attractive for long stroke ***,low force capability is their major *** solve this issue,new LVFR and LWFFR machine topologies were proposed in recent work,while lacking studies on their force improvement mechanism and further force *** this paper,LVFR and LWFFR machines with improved force performance are comparatively studied with the emphasis on their force *** operation principle of the two machines is analyzed based on magnetic field harmonics produced by flux *** of air-gap flux density harmonic components to no-load back electromagnetic forces of the two machines are analyzed and the average force equation is ***,force capabilities of the both machines are investigated by means of the time-stepping finite-element analysis to verify the theoretical analysis.
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