Motor control device, blowing device, and cleaner
US10396701B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2018 |
| Grant date | Aug 27, 2019 |
| Priority date | — |
| Expiry date | Jul 31, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/032
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A motor control device of a motor includes voltage acquisition circuitry that acquires a drive voltage of the motor; rotational speed acquisition circuitry that acquires a rotational speed of the motor; setting circuitry that sets a rotational speed instruction value of the motor; calculation circuitry that calculates a rotational speed threshold value of the motor; change circuitry that changes the rotational speed instruction value; and storage circuitry that stores reference data. The reference data includes at least three types of reference value sets each including a reference drive voltage value, a reference rotational speed instruction value, and a reference rotational speed threshold value. The calculation circuitry performs a proportional calculation, a current rotational speed instruction value, and the reference value set to calculate the rotational speed threshold value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.