Method for estimating service life of motor, motor control system, blower system, and multicopter system
US10374544B2 · kind B2 · utility
208Cited by
1References
10Claims
0Family size
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Key dates
| Filing date | Dec 14, 2017 |
| Grant date | Aug 6, 2019 |
| Priority date | — |
| Expiry date | Dec 14, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for estimating a service life of a motor that is driven by variable duty cycle control. The method includes calculating an elapsed service life ratio representing a ratio of an elapsed service life to all service life according to the following formula to estimate the service life of the motor: where Ls represents the elapsed service life ratio, ti represents a driving time in a section i, Li represents a service life expectancy at a duty cycle Di in the section i and at an environmental temperature of the motor being 40° C., and Ki represents a temperature in the section i.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.