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| | UNI - BOX3000 baler is an electromechanical integration device based on fieldbus technology. The controlling principle, rotary code machine at fieldbus joggle, realization of communication between main station and sub - stations, and application of Profibus - DP fieldbus technology in filament baler controlling system were introduced in details in this paper. | | UNI-BOX3000长丝打包机是以现场总线控制技术为基础的机电一体化设备。文章详细介绍了UNI-BOX3000打包机的工作原理、现场总线接口的旋转编码器、主从站通信的实现以及Profibus—DP现场总线技术在长丝打包机控制系统中的应用情况。 | | 文摘来源 | | Comparing with Cam Switch,the revolving coder has some advantage of no junction-point,economy,durableness,high precision,easy change, small voltage and convenient installation etc; it′s quite applicable in the self-controlling situation where takes angle as the variable. This text will show you a successful case about the application of revolving coder instead of cam switch in practice | | 旋转编码器同传统的凸轮开关相比较具有无触点、经济、耐用、精度高、更改简单、体积小、安装方便的特点,适合以角度为控制变量的自控场合。本文介绍旋转编码器代替凸轮开关在实际应用中一成功案例。 | | 文摘来源 | | Magnetic Co-P thin films were prepared by electroless deposition.When the thickness of the film was 0.3μm,the coercivity got 4.54×104A/m,and the remanent magnetization(Mr) got 0.14T.The XRD patterns indicated that,when the Co-P films were thinner,the prevailing orientation of crystalline grains was not obvious,with smaller grains size and higher coercivity;when the film thickness was beyond 3~4μm,the prevailing orientation was obvious,with larger grains size and lower coercivity.The Co-P film was applied to... | | 采用化学镀法制备了Co-P磁记录薄膜。当薄膜厚度为0.3μm时,矫顽力可达4.54×104A/m,剩余磁化强度为0.068T。X射线衍射分析表明,当Co-P薄膜较薄时,薄膜结构中无明显择优取向,晶粒较小,此时矫顽力较高;当厚度增加至3-4μm以上时,结构中择优取向明显,晶粒较大,此时薄膜的矫顽力较低。将其应用于磁旋转编码器的磁鼓记录介质,制成直径Φ40mm的磁鼓,当原始充磁磁极对数为512时,脉冲计数完整,输出信号强,波形稳定。 | | 文摘来源 | |   |
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