公开(公告)号：US20230327595A1

公开(公告)日：2023-10-12

申请号：US18091372

申请日：2022-12-30

申请人： SEMES CO., LTD.

发明人： Jun Beom LEE ,  Yeong Jae CHOE ,  Dong Hoon YANG ,  Byung Kwon LEE

IPC分类号： H02P23/14 ,  H01L21/677 ,  B65G43/02

CPC分类号： H02P23/14 ,  B65G43/02 ,  H01L21/6773 ,  H01L21/67733

摘要： Provided is a transport system to minimize an interference between motors of a transport vehicle. The transport system comprises: a first motor controller corresponding to a first wheel and configured to generate a first current value; a first motor system configured to move based on the first current value and provide a first position value according to the movement; a disturbance observer configured to receive the first current value and the first position value and calculate a first disturbance value affecting the first motor system; a second motor controller corresponding to a second wheel and configured to generate a second current value; a compensation current generator configured to generate a second compensation current value based on the second current value and the first disturbance value; and a second motor system configured to move by the second compensation current value and provide a second position value according to the movement.

公开(公告)号：US20210107745A1

公开(公告)日：2021-04-15

申请号：US17066671

申请日：2020-10-09

申请人： SEMES CO., LTD.

发明人： Jun Beom LEE ,  Yeong Jae CHOE ,  Dong Hoon YANG ,  Jeong Eun KIM

IPC分类号： B65G43/02 ,  B65G1/04

摘要： A method and a device for controlling an OHT vehicle are proposed. The method and device presents a solution in which it is possible to minimize a repetition of start and stop of a vehicle, due to congestion on a track, by providing a buffer distance or a buffer waiting time, when the control target vehicle starts due to moving out of range of a proximity distance to a preceding vehicle, after stopping according to reaching of the proximity distance to the preceding vehicle, during driving the OHT control target vehicle.