WAW-1000DMicrocomputer controlled electro-hydraulic servo universaltesting machine(Six Pillars) is a closed-loop control system that sends control signals to the servo valve through a computer, controlling the opening and direction of the servo valve, thereby controlling the flow rate into the oil cylinder and achieving constant speed test force, constant speed displacement, and other functions. Thus, mechanical performance tests such as tensile, compressive, and bending tests can be conducted on metal materials, non-metal materials, product parts, components, structural components, and standard parts.

1）Four closed-loop controls have been implemented for testing force, sample deformation, piston displacement, and testing process;

2）The data collection system consists of4High precision road24positionA/DComposition of conversion channels. The highest resolution reaches1/300000The entire process is not divided into stages;

3）SelectBB、AD、XilinxWaiting for original branded integrated components, fully digital design;

4）Compliant withPCIBus standard, microcomputer automatic recognition and installation, achieving "plug and test";

5）The electronic measurement system does not have analog components such as potentiometers, ensuring interchangeability and facilitating maintenance and replacement.

The control and measurement system of this testing machine has absorbed various 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.
This system is equipped with dedicated measurement and control software for statistical analysis and processing of experimental data. It can automatically obtain data such as upper and lower yield points, tensile strength, fracture strength, elastic modulus, elongation at each point, and σ 0.2. During the experiment, the computer displays real-time parameters such as force, displacement, strain, as well as dynamic display of the test curve. It can switch between multiple curve modes such as force time, force displacement, and displacement time according to different needs, and can also output various test curves and reports
1. Hierarchical management of user permissions, where users log in and open corresponding operational modules based on their permissions;
2. Adopting multi-threaded technology to collect data, it has fast speed, strong stability, and can automatically perform various anti-interference treatments on sensor data, avoiding control failures caused by accidental collection failures and other defects;
3. It has a powerful report editing function, allowing users to prepare test reports according to their own requirements, output various required results, and save data in formats such as Word for easy editing;
4. Adopting a database management approach, all experimental data and curves are automatically saved, and curve amplification, comparison, and review functions are provided, providing a high-quality foundation for laboratory networking.