Weiheng Engineering • Version 1.0 • October 30, 2026
Integrated Robot Joint Efficiency Mapping Method Passport
An efficiency map is valid only when input and output power boundaries, motoring or generating quadrant, direction, speed, torque, thermal state, and synchronized electrical and mechanical channels are declared. Keep motor, inverter, reducer, and complete-joint results separate.
Project and efficiency boundary
| Project / DUT | | Revision | | Date | |
|---|
| Reported efficiency | | Electrical input plane | | Mechanical output plane | |
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| Included components | | Excluded auxiliaries | | Fixture/load losses | |
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Boundary definitions
| Efficiency boundary | Input | Output | Must remain outside unless measured | Project entry |
|---|
| Reducer mechanical | Mechanical power at reducer input | Mechanical power at reducer output | Motor, drive, and auxiliary electrical losses | |
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| Motor | Electrical power at motor terminals under declared convention | Motor-shaft mechanical power | Drive input and reducer losses | |
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| Motor-drive | Electrical power at declared drive input | Motor-shaft mechanical power | Reducer and downstream mechanical losses | |
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| Complete joint | Electrical power at declared system boundary | Mechanical power at declared joint output | Excluded auxiliaries, cooling, and site loads | |
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Map-point passport
| Point ID | Speed / torque | Direction / quadrant | Thermal / cooling state | Electrical and mechanical planes | Input / output power and loss | Validity / uncertainty / raw reference |
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| P-01 | | | | | | |
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| P-02 | | | | | | |
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| P-03 | | | | | | |
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Validity and reporting controls
- Define positive and negative directions and motoring/generating sign conventions separately.
- Predefine near-zero-power exclusion or alternate loss reporting; do not hide excluded points.
- Record point order, stabilization or sweep rate, duty, voltage/bus, controller mode, temperatures, cooling, alarms, saturation, and limits.
- Use one approved timebase and analysis window for electrical, torque, and speed channels.
- Preserve invalid points, deviations, repeats, retests, calculation version, raw-data reference, and uncertainty status.
Evidence limit: This passport defines an efficiency-mapping method. It does not claim a Weiheng efficiency, accuracy, torque or speed range, sampling rate, customer result, or universal limit. Component loss separation requires independent measurement or an approved model.