Basing on the operating characteristics of the pmsm machine tool spindle drive system , a novel frequency multiplication circuits which can be switch to 2 or 4 times of base frequency is proposed in the paper . it resolves the paradox of using a same photoelectric encoder under high and low speed operating condition of motors 它能够根据指令实时的对编码器反馈回来的电机速度信号进行2倍频或4倍频处理,解决了用同一个编码器来检测电机低速和高速的矛盾。
A schedule , to report back on display : august 28 , 2006 29 9am - 5pm 2 am09 : august 2006 30 , 31 to 9 1 9 : 00 - 16 : 30 3 , the opening time : august 30 , 2006 at 9 : 30 4 , remove time : september 1 , 2006 as at 15 : 00 exhibitors scope of various bearings : metallurgical mine bearings , machine tool spindle bearings mill bearings , miniature bearings , bearings , ball bearings , roller bearings , needle roller bearings , roller bearings , gyroscope bearings , a high - precision bearings , high - speed bearings , bearings with block , linear motion bearings , low noise bearings lubricated bearings , ultra - low - temperature bearings , corrosion resistant bearings , joints bearings , deep groove ball bearings , angular contact ball bearings , aligning ball bearings , aligning roller bearings , cylindrical roller bearings , bearing a round , spiral roller bearings , thrust bearings , thrust ball bearings , thrust angular contact ball bearings , thrust spherical roller bearings , thrust needle roller bearings , thrust tapered roller bearings , turntable bearings , spherical ball bearings outside of cv and other bearings 参展范围各类轴承:冶金矿山轴承机床主轴轴承轧机轴承微型轴承组合轴承滚珠轴承滚筒轴承滚针轴承滚子轴承陀螺仪轴承高精轴承高速轴承带座轴承直线运动轴承低噪音轴承润滑轴承超低温轴承耐腐蚀轴承关节轴承深沟球轴承角接触球轴承调心球轴承调心滚子轴承圆柱滚子轴承圆轴承螺旋滚子轴承推力轴承推力球轴承推力角接触球轴承推力调心滚子轴承推力滚针轴承推力圆锥滚子轴承转盘轴承外球面球轴承等速万向节及其它轴承。
Exhibits a range , the bearings : one , all bearing products : ball bearings , angular contact ball bearings , tapered roller bearings , needle roller bearings , to the roller ball bearings , small and medium - sized , low - noise motor bearings , textile machinery bearings , precision machine tool spindle bearings , instrumentation and military bearing , gimbals bearings mill bearings 展品范围一轴承: 1各类轴承产品:球轴承角接触球轴承圆锥滚子轴承滚针轴承球向滚子轴承低噪音中小型电机轴承纺机轴承精密机床主轴轴承军工及仪器仪表轴承汽车万向节轴承轧机轴承等。