Linear motor system
US11764717B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2020 |
| Grant date | Sep 19, 2023 |
| Priority date | — |
| Expiry date | Dec 23, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/41337
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A linear motor system includes: a stator including first to tenth coils; a mover including a permanent magnet; a switcher that switches one or more power supply target coils; and first to tenth amplifiers provided in one-to-one correspondence with first to tenth coils. One or more amplifiers that serve as new one or more power supply target amplifiers immediately after the switching calculate Δθ (t0), which is a position deviation at time t=t0, based on Δθ (t0)=Δθ (t0−td)+A−B, where A is a difference between an instructed position at time t=t0 and an instructed position at time t=t0−td, and B is a difference between an actual position at time t=t0 and an actual position at time t=t0−td, and supply power to the power supply target coils by the position deviation Δθ (t0).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.