机械式拉力试验机控制部分的研究分析

Analysis of Mechanical Tensile Test Machine Control

介绍了拉力试验机的系统构成,改造设计数据采集装置和测量控制系统。试验表明,在负荷测量中,系统使用应变电桥传感器,采集的信号线性好、分辨率高、响应快;在变形测量中,使用传统的电子引伸计,噪音小、增益高、抗干扰能力强;在位移测量中,使用新型的光电编码器,结构轻巧,测量可靠,可以测量试样夹具位移的全过程;在电气控制中,使用三洋电机伺服驱动器,速度范围大,稳定度高。

This paper introduces the system structure of tensile test machine,design data acquisition device and measurement control system.In the load measurement system,using strain bridge sensor,signalacquisition,high resolution and good linearity,fast response;in deformation measurement,electronic using conventional extensometer,low noise,high gain,strong anti-interference ability;in displacement measurement,using a new type of photoelectric encoder,compact structure,reliable measurement the whole process of the measurement,sample clamp displacement;in electrical control,the use of Sanyo servo motor drive,speed range,high stability.