Mitsubishi Electric Corporation

Daisuke Koyama

Hiroyuki Ono

Shuya Sano

Yudai Yoneoka

Hiroshi Sugie

Takashi Miyasaka

Norihiko Akashi

Yoshiaki Irifune

Hiroshi Mihara

Hiroki Imai

Masahiro Ougiwari

Shimpei Kasahara

A printed circuit substrate includes a circuit unit, a first main frame ground interconnection, a first sub frame ground interconnection spaced away from the first main frame ground interconnection in a first direction, and a first conductive via connecting the first main frame ground interconnection and the first sub frame ground interconnection to each other. In plan view from the first direction, a second outer periphery of the first sub frame ground interconnection is surrounded by a first outer periphery of the first main frame ground interconnection. Thus, a printed circuit substrate that can prevent the circuit unit from malfunctioning can be provided.

Printed circuit substrate

In a control apparatus for performing serial data communication, a transmitting section includes a memory to store data for other control apparatuses and a transmission control section to generate a frame containing the data and memory storage information indicating a storage position of the data in buffer memories of the receiving sections of the other control apparatuses. A receiving section includes a reception control section to extract the memory storage information and the data from the frame, a buffer memory to store the extracted data, and a data-storage processing section to store the extracted data in an address of the buffer memory designated by the memory storage information. The memory storage information is set for each of the control apparatuses. A control section reads out the data from an address of the buffer memory for each of the other control apparatuses.

Control apparatus, control system, and communication method for controlling one or more motors in serial communication with a controller

An upper-level control device includes a communication control unit that transmits a command, which is used after a command that is currently executed and includes an execution order, to an electric motor control device during electric motor control devices respectively perform driving controls of electric motors, and each of the electric motor control devices includes a command storage unit configured to store a plurality of commands, a communication control unit that stores the command received from the upper-level control device in the command storage unit in the execution order, and a command-follow-up control unit that performs a follow-up control of the electric motors based on the command. When the command storage unit is fully filled with the commands, the communication control unit stores a newly received command in the command storage unit by overwriting the newly received command in an area where an executed command is stored.

Electric motor control system and communication method

Growing community of inventors

Chiyoda-ku, Japan

Daisuke Koyama