公开(公告)号：US20220085696A1

公开(公告)日：2022-03-17

申请号：US17421064

申请日：2019-11-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： MASASHI MISHIMA ,  YOSHIAKI IKEUCHI ,  YUSUKE IMADA

IPC: H02K11/21 ,  H02P6/185

Abstract: A motor control device includes an instruction position detector that calculates, as an instruction position detection value, a position detection value at an external instruction timing. The instruction position detector includes an internal counter, a detection position calculator, and a correction value generator. The internal counter outputs a count value counted at a cyclic interval shorter than a position read cycle that is an interval at which a motor position detected by a rotary encoder mounted on a motor is read as a position detection value. The detection position calculator controls a rotation of the motor by use of the position detection value, is supplied with an external detection instruction signal including an instruction pulse, and calculates the instruction position detection value by use of a count value at the external instruction timing indicated by an edge of the instruction pulse. The correction value generator includes an external input terminal, an input circuit, a count value acquisition unit, and a correction value calculator.

公开(公告)号：US20240223351A1

公开(公告)日：2024-07-04

申请号：US18551888

申请日：2022-02-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： ATSUKI KYUHATA ,  HAYATA SAKAI ,  MASASHI MISHIMA

IPC: H04L7/02

CPC classification number: H04L7/02

Abstract: A bandwidth used in a network of a communication system is suppressed. Communication system includes master device and slave device. Master device includes: first counter that increments a first count value every time a first unit time elapses; second counter that updates a second count value every time a second unit time elapses; and master transmitter that transmits timing information indicating a timing at which the second count value is updated to slave device. Slave device includes: third counter that increments a third count value every time the first unit time elapses; fourth counter that increments a fourth count value every time a third unit time shorter than the first unit time lapses, and resets the fourth count value at a timing of incrementing the third count value; and slave receiver that receives the timing information from master transmitter.

公开(公告)号：US20230280718A1

公开(公告)日：2023-09-07

申请号：US18004328

申请日：2021-06-17

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： MASASHI MISHIMA ,  DAISUKE SONODA ,  YOSHIAKI IKEUCHI

IPC: G05B19/414

CPC classification number: G05B19/4141 ,  G05B2219/2231

Abstract: A communication device includes a processor and a communication part. The communication part communicates with one or more slaves. The processor has a function of executing communication processing and setting processing. The communication processing includes causing the communication part to transmit a frame including main data to the one or more slaves in a first period. The setting processing includes setting N (N is an integer of 2 or more) second periods within the first period. The setting processing includes setting a slot for performing communication of sub-data other than the main data for each of the second periods. The frame includes at least one of the slots during a transmission period of the main data.

公开(公告)号：US20240106735A1

公开(公告)日：2024-03-28

申请号：US18263897

申请日：2021-12-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： HAYATA SAKAI ,  ATSUKI KYUHATA ,  MASASHI MISHIMA

IPC: H04L45/28 ,  H04L12/437 ,  H04L41/0677

CPC classification number: H04L45/28 ,  H04L12/437 ,  H04L41/0677

Abstract: The time taken from an occurrence of an anomaly related to network connection to a change of a transmission path of a frame is shortened as compared with a conventional art. Communication system includes controller and a plurality of slaves each including third input and output port and fourth input and output port. Slave includes detector and slave transmission control part. Detector detects an anomaly related to connection of third input and output port and an anomaly related to connection of fourth input and output port. When detector detects the anomaly, slave transmission control part attempts to transmit a disconnection node notification frame indicating that a change in a connection state is detected from third input and output port and fourth input and output port. The controller changes the transmission path of the normal frame in a case of receiving the disconnection node notification frame.

公开(公告)号：US20220368559A1

公开(公告)日：2022-11-17

申请号：US17757154

申请日：2020-12-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： MASASHI MISHIMA ,  DAISUKE SONODA

IPC: H04L12/403

Abstract: A communication device includes a processing part and a communication part that communicates with one or more slaves. The processing part has a function of executing communication processing and setting processing. The communication processing is processing for transmitting a main frame including main data from the communication part to one or more slaves in a first period. The setting processing is processing for setting a second period shorter than the first period and a time slot allocated to at least one slave among the one or more slaves in every second period.