气动马达模型的辩识和分析

通过对气动马达实时采样、离线数据分析、仿真等辩识工作，获得气动马达的数学模型，并对气动马达模型的动特性进行了分析。     

ELID镜面磨削技术——应用

应用ELID磨削技术，分别在平面、内圆和外圆磨床上对多种典型硬脆材料实现了精神镜面磨削。结果表明，该技术精度高、成本低、工艺简单可靠，具有广阔的应用前景。     

ELID镜面磨削用金属结构剂砂轮的研制

采用铜粉，还原铁粉，铸铁粉并辅以改善铁粉和铸铁粉末冶金性能的金属添加剂做配方，烧制出适合现有生产条件的ＥＬＩＤ磨削用砂轮磨块，性能检验表明该与方满足了ＥＬＩＤ磨削要求。     

Research on Measuring Method of Optical Focal Planed

ＲｅｓｅａｒｃｈｏｎＭｅａｓｕｒｉｎｇＭｅｔｈｏｄｏｆＯｐｔｉｃａｌＦｏｃａｌＰｌａｎｅＸＵＤｉｎｇｊｉｅ；ＷＡＮＧＸｉａｏｘｉ；ＺＨＡＮＧＪｉｎｙｕ；ＹＵＡＮＧＺｈｅｊｕｎ（徐定杰）（王晓溪）（张今瑜）（袁哲俊）（Ｄｅｐｔ．ｏｆＣｏｎｔｒｏｌａｎｄ...     

Finding Intersection Points of Curves and Surfaces for Solid Modeling in Curved-Surface Environment

Intersecting is an important factor which influences the effociency androbustness of Boolean algorithms in solid modeling based on surved-surfaces,andintersecting algorithms are closely related to geometric representations of curved-surfaces.Although surfaces can be commonly represented with NURBS,unnecessary complexitiesare caused in the intersecting of quadric surfaces.Quadrics are frequently used to des-cribe geometric features of shafts,holes and grooves etc.in mechanical part designing,therefore;their intersection algorithms are required to have higher accuracy,higher efficiency and higher robustness.For this reason,a practical representation ofquadric surfaces is studied in detail,and on the basis of that,algorithms of intersectingpoints are developed between quadric suraces and their boundaies,i.e.,conics,quarticnonplanar space curves.     

微机控制压电陶瓷微位移器驱动电源的设计与研究

本文对压电陶瓷微位移器驱动电源的设计原理和设计特点作了深入分析.在此基础上,进行了微机控制压电陶瓷微位移器驱动电源的设计,并进行调试和实际应用试验.试验结果表明,该驱动电源输出精度高,动态特性好,可以作为各种压电陶瓷微位移器件(或装置)的驱动控制.     

天然金钢石工具的解理破损

The cleavage fracture is the most common form of wearing and tearing in natural diamond tools. Through an analysis of the crystal structure, the reasons why the phenomenon of cleaving occurs in diamond are explained in detail and the position of a cleavage plane in an octahedron or a dodecahedron diamond and its criterion are given in terms of the concept of the covalent bond density per     

CBN砂轮修整方法及其对磨削表面完整性的影响

本文就树脂结合剂CBN砂轮的修整方法及其对磨削表面完整性的影响进行了研究。结果表明,目前常用的油石修整法等不能得到有效的修整和磨削结果,在磨削表面造成严重的热损伤,而本文提出的弹性修整法和超声波振动修整法修整效果显著,可以较准确地控制CBN磨粒的凸出高度,使砂轮具有很强的切削能力,获得高的生产率和磨削表面完整性。     

用RAM作为通讯场所实现并行通讯

<正>用RAM作为通讯场所能够使这种主从系统迅速实现多组数据的井行通讯与传统的并行通讯相比,具有软件设计简单,通讯准确,通讯机之间无需协议应答信号,因而可以大大节约系统的通讯时间,尤其适合于快速的实时控制系统.以两片616 RAM和八片74LS245收发器为例,实现63路八位数据的快速并行通讯.硬件接口电路如图1所示.八片74LS245收发器作为开关使用,分别用于RAM的地址线和数据线的选通控制,其中芯片1,2,3,4,用于地址线,芯片5,6,7,8用于数据线.锁存器74LS74等芯片作为保存切换两片RAM的控制信息使用,构成了电路的存储,读取数据的控制口(在本例电路中该控制口地址为03FH).当从机单片机需要存储数据时,可先向控制口写入1或0,该信息通过锁存器,三态门,反相器分别控