One or more functions in demonstration (operating procedures, safety), interaction (equipment disassembly and assembly, instrument operation), and assessment (process operation, troubleshooting); content complies with occupational standards, technical specifications, business procedures, and industry attributes, with no scientific errors; content complies with Chinese laws and regulations, respects the customs and habits of all ethnic groups, and has no copyright disputes; if it includes information in minority or foreign languages, the integrity of the original content should be maintained and processed in the original language.

The visuals are realistic, with colors, shapes, sounds, positions, etc., highly consistent with the characteristics of the actual object; the interface is user-friendly, with reasonable interactive design and simple operation; if there is narration, the dubbing should be standard, free of noise, pleasant to the ear, with appropriate volume and pace, and provide a control switch for the narration; background music should match the content, with a control switch provided; it includes assessment functionality and is supported by a backend server.

Provides a virtual environment for learning and verifying frequency conversion technology, enabling virtual experiments in frequency conversion technology without time or space constraints.

This system achieves control of various modes such as forward rotation, reverse rotation, jogging, speed increase, speed decrease, and multi-speed control of the motor based on the connection of the corresponding lines of the frequency converter and the setting of frequency converter parameters.

(1) The client implements the connection of frequency converter lines and the setting of frequency converter parameters.

(2) The client and backend use HTTP requests to achieve mutual data transmission.