In the teaching, scientific research, and technical verification of rotating machinery fault diagnosis, the PT400mini Mechanical Fault Simulator is a "miniature industrial scenario reproduction tool". Through its modular design, it accurately embeds various types of mechanical faults and provides users with a controllable and repeatable experimental environment, which can be called a "bridge equipment" connecting theoretical knowledge and industrial practice. The following explains its core functions, specific application scenarios, and practical value from three aspects:

Mechanical Fault Simulator

I. Core Positioning: A "Miniature Reproducer" of Industrial-Grade Faults

The PT400mini adopts a cantilever rotor strriments on real industrial equipment.

2. Providing a Standardized Data Acquisition Platform to Support the Development of Fault Diagnosis Technology

As a "data generation tool", the PT400mini provides key support for the development of fault diagnosis algorithms and the verification of sensor performance. Its advantages are reflected in three aspects:

Data controllability: The speed can be adjusted through a brushless DC motor (maximum 3000rpm), and with the load adjustment function, fault data under different working conditions (such as vibration differences between low-speed wear and high-speed broken teeth) can be generated. This solves the problem of "uncontrollable and non-reproducible" industrial on-site data.

Acquisition compatibility: The equipment is reserved with standard screw holes and brackets, supporting the installation of various monitoring devices such as vibration acceleration sensors and key-phase sensors. It can be seamlessly connected with multi-channel data acquisition systems to realize synchronous acquisition of time-domain/frequency-domain signals.

Typical characteristics: The vibration signals generated by simulated faults have clear characteristic frequencies (such as bearing outer ring fault frequency and gear meshing frequency), which can be directly used to verify the accuracy of algorithms such as FFT spectrum analysis and envelope analysis, and provide high-quality samples for the training of intelligent diagnosis models.

3. Adapting to Teaching Scenarios to Build an Immersive Practical Classroom

The PT400mini has been selected as an experimental equipment for mechanical engineering majors by many universities (such as Qilu University of Technology). Its teaching value is reflected in its ability to "turn abstraction into concreteness":

Principle visualization: Students can personally replace fault modules (such as replacing a standard gear with a broken-tooth gear), observe the changes in vibration waveforms at the same speed, and intuitively understand the "correspondence between fault types and vibration characteristics", which is easier to absorb than textbook theories.

Practical operation: It supports practical projects such as single-plane dynamic balance experiments, start-stop tests, and tapping experiments. Students can solve the problem of "rotor unbalance" by adjusting the position of balance weights and master the core skills of industrial equipment maintenance.

Systematic cognition: The full-process operation from "fault simulation → signal acquisition → feature extraction → diagnosis and positioning" helps students establish a complete fault diagnosis thinking system and lay a foundation for their future work in equipment operation and maintenance as well as research and development.