5 factors affecting the accuracy of electronic universal testing machine

First of all, the sensor is driven by the activity of the components of the ball screw, such as the silk rod has a gap in the future to make the experimental data, will have a direct impact on the experiment of the maximum deformation and post-breakage elongation. Currently on the market electronic universal testing machine has a screw is used T-shaped common screw, a gap is relatively large, the second is the friction is relatively large, the use of short life, Beijing Zhongsheng Huaye Technology Co., Ltd. used screw for Germany You Li Nieff high-precision non-gap ball screw, exterior quenching hardness of HRC58-62, the use of life of up to a few decades.

Secondly, the transmission system of the test machine, the current market test machine transmission system, some use reducer, some use common belt, the two transmission methods of the primary fault: the former need to add lubricating oil on a regular basis, the latter can not guarantee the synchronization of the transmission. Beijing Zhongsheng Huaye Technology Co., Ltd. of the test machine transmission system using the full arc synchronous belt deceleration, to ensure the synchronization of transmission precision, high transmission accuracy, high efficiency, smooth transmission, low dry sound, no maintenance, long service life.

Next is the force value of the test machine sensors, because the quality of the sensor determines the accuracy of the test machine and force invariance, the current market tensile force with a small force value of the sensor commonly used S-type sensors, sensors inside the ordinary resistance strain gage type. Beijing Zhongsheng Huaye Technology Co., Ltd. imported sensors for the world's most famous sensor manufacturer, the United States Ambrose force sensor, the sensor high precision, good linearity, stable function.

Again is the power source of the test machine (motor) is also called motor, the current market has a test machine using a common three-phase motor or frequency motor, this motor control response is slow, inaccurate positioning, ordinary speed limitations narrow. There is a high speed without a low speed or low speed without a high speed, and speed control is not accurate, Beijing Zhongsheng Huaye Technology Co., Ltd. motor used for the Japanese Panasonic full digital AC servo motor, control method using full digital pulse control, speed limitations, up to 0.001-1000MM / MIN, control positioning accuracy, fast response, 0.01 seconds can be added to the full range of speed control can be guaranteed! The motor can guarantee the full-scale speed control accurately, and long service life, up to several decades, and do not have to maintain.

The last is the test machine measurement and control system (that is, software and hardware), most of the current market tension machine measurement and control system using 8-bit microcontroller control, sampling speed is low, and anti-disturbance ability is poor, and then is the AD converter, if the number of bits of the AD converter that is, the resolution is low, then the measurement will not be accurate. Beijing Zhongsheng Huaye Technology Co., Ltd. measurement and control system using the world's most advanced 32-bit ARM skills developed by the throttle HytestV6.0. This throttle is based on the 32-bit ARM platform, and running the company's development of the operating system, so that the sequence of operation is more stable.Sampling speed up to 200 times per second, coupled with 24-bit high-precision low-dry sound high-speed AD converter, so that the entire measurement and control system is more high-precision, the upper computer software for the Beijing Zhongsheng Huaye Technology Co., Ltd. developed over several years of all-digital three Bi link system software, there are two kinds of control methods a. PID control conditioning method b. mode lake control conditioning method (the first in the industry). So that the entire experimental process can reach a constant force value control control, constant displacement control, constant deformation control, low-frequency commission control, and order arbitrary control.