公开(公告)号：US11764717B2

公开(公告)日：2023-09-19

申请号：US17793868

申请日：2020-12-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hayata Sakai ,  Toru Tazawa ,  Kenta Murakami ,  Yusuke Nonogaki ,  Renya Kawakami

IPC: B65G35/06 ,  H02P25/064 ,  H02P6/28 ,  H02P6/00 ,  H02P6/16

CPC classification number: H02P25/064 ,  H02P6/006 ,  H02P6/16 ,  H02P6/28

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).