好静的
1.Direct torque control (DTC) theory is another advanced control theory after VC theory in the speed control field. The application of DTC theory on PMSM is discusses in the end and the simulation results show perfect dynamic performance, minor static error and good robustness characteristic.
2.The Company product characteristics : good withstand high temperatures, low temperature performance, longterm use in 80~+250 again : chief climate ageing nature of refractory Otherwise, the highoxygen index, nonabsorbent, chief radiation excellent, if longterm exposure in the atmosphere, surface and the performance of its fundamental unchanged; Kai Jun good performance, high voltage resistance; Excellent resistance to corrosive, Almost any solvents may show in strong acid aqua regia, light oxidation sodium strong base, strong agent five fluorinated uranium are not corrupted; good resistance to abrasion , static friction coefficient is the smallest plastic, since lubricant fine performance, the surface is not quite apparent; tensile strength good.
3.Jing had a very good day,and put your wallet containing $30000 into microwave oven for safekeeping .
4.The experimental results show that this valve has wide adjustable range and high precision for pressure,also good characteristic for static and dynamic state.
5.Mature and responsible, the humor and wit humor, considerate, the docile sincerity, the gentleness is considerate, the gentleman poise, the bright and big degree, the healthy body, likes a kid, the temper be good friends with, The sky in this predestination, calm down to meet my another the half life.
6.Have a timer ready - the next incubation step has to be exactly 4-5min!
7.Along with the progress of drilling technology,many new types of BHA such as steering motor assembly,dropping assembly with eccentric bend sub,dropping assembly with flexible connection are developed based on common building,dropping and holding assemblies.For using these BHA ,a new mathematical model is put forward for 3D static analysis of these types of BHA under small deflection.And its weighted residual solution is given.The mathematical model includes(1)differential equations;(2)boundary conditions at drill bit,stabilizer,bend angle,diameter change,tangential point and borehole wall;(3)lateral forces and deflection angles of bit.The software based upon this method runs well.
8.Abstract: Along with the progress of drilling technology,many new types of BHA such as steering motor assembly,dropping assembly with eccentric bend sub,dropping assembly with flexible connection are developed based on common building,dropping and holding assemblies.For using these BHA ,a new mathematical model is put forward for 3D static analysis of these types of BHA under small deflection.And its weighted residual solution is given.The mathematical model includes(1)differential equations;(2)boundary conditions at drill bit,stabilizer,bend angle,diameter change,tangential point and borehole wall;(3)lateral forces and deflection angles of bit.The software based upon this method runs well.
9.Water level control system of hydraulic model ex periments is nonlinear and large hysteresis system, P-FUZZY-PI composite control ler combines both fuzzy control characteristics of strong adaptability, good dyn amic behavior and strong resist interference ability and PID control characteristics of dispelling static error. The dynamic and static quality of control system is improved largely when P-FUZZY-PI controller is applied, and it has received perfect control effects.
10.The experimental results indicate that the degassing effect of Ar is better than the one of N2,the best holding time after the degassing gases using the blister flotation method is about 30 min,the best pouring temperature of aluminum melt is 680～685℃.
