Microcomputer controlled electro-hydraulic servo universal testing machine (single space)

1. In terms of mechanical process structure

• The main unit of this machine adopts an upward mounted oil cylinder, and the stretching space is set very reasonably, making it very convenient to operate
• The host adopts a rigid structure design and has a low center of gravity,Make the ground vibration less noticeable
• Using imported load sensors,High measurement accuracy and good linearity
• Adopting imported pull-out photoelectric encoder with high measurement accuracy
• Long stroke bidirectional oil cylinder can meet the tensile requirements of specimens of different length specifications
• The DDV D633 servo valve produced by MOOG company in the United States is used to replace the traditional nozzle baffle servo valve, which has the characteristics of rapid response, high control accuracy, improved pollution resistance, and easy maintenance
• Coaxiality guarantee
• The system has two sets of differential circuits

2. In terms of control and measurement systems

The control and measurement system of this machine has absorbed various advanced experiences in current testing machine control, and adopts a fully digital electro-hydraulic servo closed-loop control and measurement system to achieve control functions such as constant velocity stress, constant velocity strain, constant velocity test force, constant velocity displacement, test force maintenance, displacement maintenance, etc. This system has multiple layers of protection functions, which can achieve various safety protections such as overload, overcurrent, overvoltage, undervoltage, overspeed, and limit for the testing machine.

Application software is used to set experimental methods, control the experimental process, and save experimental data and graphics after the experiment is completed. The developers of this application software are very familiar with the standards, especially with the latest GB/T 228.1-2010 standard. The application software has undergone extensive modifications and is fully capable of meeting the requirements of the new standard.