The magnetic field coupling between neighbors electromagnetic is analyzed by femm software and the solved . mathematical system and conrrol system of the pemb are established . voltaic stiff coefficient and displacement stiff coefficient are calculated 建立了永磁偏置磁轴承的数学模型和控制模型,计算了其电流刚度系数和位移刚度系数。
2.
The eco home owner , barbara hammond , talks to a group about some of the heat savings of their system which includes a pv ( photo voltaic ) solar panel installed on the roof which supplies all of the home ' s energy demands 生态环保屋的屋主巴巴拉汉孟与一组人谈一些能节约热量的系统，包括架置光电太阳电池板在屋顶上、来供应整栋房子的能源需求量。
3.
In the vscf system , the tip - speed ratio of wind turbine is almost retained at a constant value during a wide range of wind speed , which can improve the efficiency and stabilization of the system . it also can be connected to the grid without any voltaic strike 交流电机变速恒频风力发电系统是20世纪70年代中后期以后逐渐发展起来的一种新型发电系统,变速恒频风力发电技术因其高效性和实用性正受到国内外越来越多的重视。
4.
The approximate computation method is used in float point computation of system ' s control algorithms on fixed - point dsp after comparing several methods in respect of running time and program space involved , which attains quick computation besides high precision and implements output voltaic with low harmonic and high control precision of frequency 通过从运行时间和占用空间等方面比较在定点dsp上实现浮点数运算的几种方法，并选择了近似计算法作为系统控制算法浮点数运算的方法，在保证足够计算精度的前提下达到计算的快速性，实现低谐波和频率控制精度高的输出电压。
