The dynamic fatigue software testing system is an electro-hydraulic servo controller independently developed by Jinan Jingliang Electronics, which can be flexibly configured according to customer testing requirements. The control system mainly consists of controllers that perform real-time task processing and controllers with user-friendly interfacesPCThe human-machine interface software consists of two parts.PCMachine and controller throughUSB2.0Connecting and high-speed data transmission, with a transmission rate of up to480Mb/sMeet the real-time requirements of the experimental system control.USB2.0The interface is easy to plug in, making the human-machine interface software suitable for both industrial computers and laptops.

The main features of the dynamic fatigue software testing system are:

1Based on high-speed DSP, the operation speed is high, and the closed-loop frequency of a single channel can reach 5KHz.

2The optimized PIDF algorithm can be set through system settings, such as speed feedforward or auxiliary feedback.

3The internal hardware adopts a fully isolated approach to resist interference.

4The board adopts a European style card insertion method, which is convenient for equipment maintenance and upgrading.

5Both software and hardware are based on modular design, which facilitates channel management and expansion.

Dynamic fatigue software testing systemmodular:

1Analog signal conditioning moduleUsed for conditioning displacement and force signals and sending them inCPUProcess and participate in real-time closed-loop computation. Signal conditioning moduleADThe resolution is18Bit, oversampling can reach19Position. The data sampling frequency is49.152KHz.

2Digital Input/Output ModuleUsed for switch input/output control, monitoring other switch signals, and achieving automatic and emergency shutdown functions.

3Servo drive moduleUsed to output driver voltage signals. Equip according to the performance requirements of the system.DAThe resolution is16Bit, data output update frequency is49.152KHz.

4Encoder acquisition moduleUsed for collecting and processing orthogonal signals from encoders, orthogonal signal sampling clock10MHz.