All digital controller DEDC500i:

The servo control system independently developed by the company is a fully digital controllerDEDC500i：

DEDC500iThe controller is based on classicPIDA fully digital controller for deviation control, using dualCPUUsed for control and data management respectively, ensuring control speed and accuracy at high frequencies and speeds.

The controller is an independent controller that communicates with the upper computer through Ethernet.

The single channel system can be configured with three digital universal conditioners and one valve driver to complete signal measurement and control. The control method can be any control channel conditioner signal such as load, displacement, and deformation.

Smooth switching of control modes in the open state of the hydraulic station;

The function generator and actual control frequency are0.001—100Hz；

Control waveforms include sine wave, square wave, triangular wave, monotonic wave (oblique wave), combined wave, etc;

And equipped with multiple digital meter heads to display measurement signals in real time;

All operations and settings are implemented through the virtual panel of the upper computer system software;

Open to usersDLLConvenient for users to expand or independently program the upper computer software according to different requirements.

The system defaults to configuring basic testing software for conducting routine fatigue tests and data storage.

Optional multitasking software provides users with a creative experimental environment, rich experimental and data storage methods;

It can achieve functions such as preset fatigue times, fracture shutdown, limit protection lock stop indication, etc.

Equipped with peak valley control compensation function to ensure control accuracy. Equipped with automatic data storage function;

The control system provides multiple digital channelsIOThe interface can complete the software startup of the hydraulic station and introduce hydraulic related alarm data, facilitating the implementation of interlock function during the testing process.

2Software Description

configurationDEDC500i.00Basic testing software that can perform routine fatigue tests and data storage; Multi task experimental software completes complex experiments and data storage.

3Specific technical indicators:

*The software runs onWINDOWSXP/WIN7Platform.

*Sampling and closed-loop control rate:10kHz.

*Function generator frequency:0.01～100Hz.

*Test frequency:0.01～100Hz.

*Control mode: Multiple control modes (such as displacement, load, deformation, etc.) can be smoothly switched.

*Function generator waveform: sine wave, square wave, oblique wave, triangular wave, etc.

*Control compensation: Comprehensive adaptive peak valley compensation function. The operator hardly needs to adjust the setting parameters.

*Protection function: Set limit protection function, choose to stop the program or close the substation/Oil source.

*Run the fade in/fade out function. Soft start and soft stop to prevent overshoot.

DEDC500i.00Basic experimental software (default)