拉力试验机是拉力试验的主要机器，其拉力信号可用标准测力计或电校正两种方祛进行标定，实质上是对测量电路作调整标定。标准拉力试验机的测量精度一般可达0.15%,将它串接到试验机的力传感器后。先调整测量电路中相位平衡和幅值的“粗平衡”和“细平衡”后使电流输出为零。
Tensile test machine is a main machine for tensile testing, the tension signal available standard dynamometer or electrical calibration two kinds of methods of calibration, is substantially adjusted calibration of the measuring circuit. The measurement precision can reach 0.15% standard tensile test machine, put it on a test machine of force sensor. Toadjust the measurement circuit of phase equilibrium and the amplitude of the "rough balance"and "fine balance" after the current output is zero.
再缓慢加载，当拉力试验机达到标淮测力计的力值时，力传感器及共放大电路所显示的值即满载量程，调整测量放大器的放大倍数，使电压值为一标准值，如10v.将此作为标准电压。卸载并进行数次复校后即完成满量程的标定，然后再作一定比例量程的线性检查。
Then a slow loading, when the tensile testing machine to reach standard dynamometer force,force sensor and amplifier circuit displays the value of the full range, adjustment of magnification measuring amplifier, the voltage value is a standard value, such as 10v. as thestandard voltage. Uninstall and several second after the completion of the full range of linearcalibration, check and then for a certain proportion range.
由于同一台试验机在不同的控制状态、不同的试件时它的增益有所不同，此外还要根据精度和须宽等要求相应调整有关参数，因此操作人员必须根据试验要求不断调整有关参数，使之达到优良的性能。现将试验机的电液控制系统合理的操作和调整简要介绍如下。
Because of the same test machine in the specimens with different control state, its gain is different, also according to the requirements of precision and wide adjustment shall becorresponding parameters, therefore the operator must constantly adjust the parametersaccording to the test requirements, so as to achieve excellent performance. The electro-hydraulic control operation and adjustment introduces reasonable system following testing machine.
开机时应先使控制台通电，然后再启动液压源，如果先启动液压源而未使控制台处于控制状态，一方面由于伺服阀的零位偏置而使液压油进人液压虹的一往，导致活塞向一个方向运动直到碰到缸盖，有时甚至发生撞缸事故；另方面一些电子器件需要顶热，尤其是应变片的电路，需要预热半小时以上才能使零位比较稳定。因此开机时首先应使控制台通电检查各仪表是否都处在正常情况。对具有位置、力和变形控制等几种控制状态的试验机，应先将控制状态置于位置控制处，等全部启功完毕后再根据需要转换到相应的控制状态。
The boot should enable the console is energized, and then start the hydraulic source, if youstart the hydraulic source without the console is in control, on the one hand the hydraulic oilinto the hydraulic of the rainbow to the bias of the servo valve, causing the piston moving in one direction until it meets the head, sometimes even hit the cylinder accident; on the other hand, some electronic devices require the top heat, especially the circuit of strain gauge,preheat is required for more than half an hour to make zero stability. Therefore, the bootshould first make the console to check the power of each instrument are in normal condition.The testing machine with some position, force and deformation control state, should firstcontrol state in position control, etc. according to the needs of Qi Gong after conversion tothe corresponding control status.
拉伸试验机 http://www.ksshiyanji.com/
