查询词典 flux

A new brushless DC motor DTC scheme was studied to solve those problems associated with direct torque controlof brushless DC motor,such as difficulty to control flux and complexity to estimate torque.The flux hysteresis controller was ignored in the constant torque region and an improved method was proposed to make the estimation of torque easier.The proper stator voltage space vector was selected based on the output of the torque hysteresis controller and the sector which the current rotor flux locates in.

摘 要：针对无刷直流电机直接转矩控制中磁链观测困难、控制复杂等问题，提出了一种应用于无刷直流电机二二导通方式下的新型直接转矩控制方法：在电机基频以下调速时，略去了常规的磁链观测控制环节，改进了转矩计算方法，通过转矩滞环控制选择所施加的空间电压矢量。

The invention provides the flux-cored wire for welding the duplex stainless steel, 17 percent to 24 percent flux-cored powder is filled into stainless steel belt. The invention is characterized in that the mass percent of the components of the flux-cored is as follows: 35 percent to 40 percent of chromium powder, 11 percent to 15 percent of molybdenum powder, 2 percent to 4 percent of nickel powder, 3 percent to 5 percent of manganese powder, 1 percent to 5 percent of magnesia chrome, 1 percent to 3 percent of ferrosilicon, 4 percent to 9 percent of rock crystal, 2 percent to 6 percent of feldspar, 21 percent to 30 percent of rutile, 0.5 percent to 4 percent of Al2O3, 0 percent to 5 percent of zircon, 0.5 percent to 3 percent of Bi2O3, and 0.5 percent to 3 percent of manganese nitride.

一种用于焊接双相不锈钢的药芯焊丝，将药芯粉末以17～24％填充在不锈钢带内，其特征在于，所述的药芯质量百分比成分如下：35～40％的金属铬粉，11～15％的金属钼粉，2～4％的金属镍粉，3～5％的金属锰粉，1～5％的铝镁合金，1～3％的硅铁，4～9％的石英，2～6％的长石，21～30％的金红石，0.5～4％的Al 2 O 3 ，0～5％的锆英石，0.5～3％的Bi 2 O 3 ，0.5～3％的氮化锰。

G. The welding flux is automatically feeding and recovery. Separately operation with welding machine. Flux recycling system can collect back flux efficiently and send to separate in segregator.

焊粉回收机是自动回收及供料–在中央操作箱上独立操作焊剂回收系统能有效地将焊粉回收与分离，并可重复使用

LTHJ-SUPER-A1 Gantry welding automatic recovery machine This system is set for one body super new portal welder, special cylindrical welding tools or difficult welding. It adds super negative pressure wind pump on inner side of flux cylinder, so that in the welding process it can absorb unlyzed flux directly into cylinder and place into a small hopper. Open the valve of small hopper and put flux onto work piece, then you can put it into repeated usage.

LTHJ-SUPER-A1型龙门焊自动回收系统本系统是一体超强新型的门式焊机或外圆焊接特制工具、高难度的焊接而设置的，它就是一个焊剂筒内加上超强负压风泵，使在焊接过程中尚未溶化的焊剂直接吸收到筒内，放置到小料斗中，打开小料斗阀门把焊剂放到工件上，进行往复使用。

First the passivity of motor rotor flux subsystem is proved. Workless forces have no influence on the energy balance equation and have no effect on the asymptotic stability. Then it is discussed that the system can stably track the reference rotor flux without rotor flux observer. At last an adaptive PBC strategy is proposed with regard to the rotor resistance change. A clear and simple design for the speed control subsystem with inner current loops is presented.

证明了感应电机转子磁链子系统的无源性，找到系统能量耗散特性方程中的无功力，它不会影响系统的稳定性，得出无需转子磁链观测反馈即能稳定跟踪转子磁链的参考值，同时考虑电机转子电阻在运行中发生未知变化，设计自适应调节器使系统对转子电阻呈现鲁棒性，构建了带电流内环速度控制系统。

Fig.7. The distribution of the net radiation flux at the top of the atmosphere inferred from NIMBUS 3. Plots of the zonally averaged net flux, the flux along 90°E and along 20°N for July 1969 are shown.

根据"雨云"3 号资料推算出的大气层顶净辐射通量分布。1969 年 7 月纬向平均净辐射通量，沿 90°E 的净辐射通量和沿 20°N 的净辐射通量分布。

English: 672. Fig.7. The distribution of the net radiation flux at the top of the atmosphere inferred from NIMBUS 3. Plots of the zonally averaged net flux, the flux along 90°E and along 20°N for July 1969 are shown.

图7 。根据"雨云"3号资料推算出的大气层顶净辐射通量分布。1969年7月纬向平均净辐射通量，沿90°E的净辐射通量和沿20°N的净辐射通量分布。

Servo motor, automatic, intelligence, system of soldering flux:Computer work out PCB size and flux time during product different products;Insure flux effect accordantly.

伺服马达，自动、智能、助焊剂喷雾系统：在生产不同产品时，电脑自动算出PCB大小及喷雾时间；确保喷雾效果一致。

This paper compares the agglomerated flux with fused flux ,and introduces the usage and production technology process of agglomerated flux.

对比了烧结焊剂与熔炼焊剂的区别，从中介绍了烧结焊剂的使用特点和生产工艺流程

The results demonstrate that after backwashing,the flux was completely recovered by addition of 4mg/L and 10 mg/L,while the flux was only 40% of initial flux without coagulation pretreatment.

结果表明：直接过滤原水的情况下，反冲洗后的膜通量恢复仅为初始通量的40%；而投加了混凝剂4mg/L和10mg/L后，反冲洗后的通量得到了完全的恢复。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

But for the most part, knaves and parasites had the command of his fortune

然而支配他的家产的大多是恶棍和寄生虫。