Control device and communication method in control device
The control device in the motor drive system addresses noise oscillation and electromagnetic interference by synchronizing MCU and IC communication and optimizing data exchange, resulting in reduced noise oscillation and improved system stability.
JP7657850B2Active Publication Date: 2025-04-07MITSUBA CORP +1
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Patent Information
- Application Number
- JP2023035770
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2023-03-08
- Publication Date
- 2025-04-07
- Estimated Expiration
- 2043-03-08
AI Technical Summary
Technical Problem
Noise oscillation during communication in motor drive systems can cause electromagnetic interference, leading to malfunctions, data loss, and safety risks.
Method used
A control device with an MCU that includes a communication time determining unit to synchronize communication between the MCU and IC, avoiding timing overlaps with noise generation from other sources, and comparing communication traffic volumes to optimize data exchange.
Benefits of technology
The solution effectively reduces noise oscillation caused by communication, minimizing electromagnetic interference and associated risks, thereby ensuring stable system operation.
✦ Generated by Eureka AI based on patent content.
Abstract
To reduce noise oscillation caused by communication on the same system.SOLUTION: A motor control device 10 includes an MCU 12 and a pre-driver 13 that form at least part of the circuit for controlling the drive of a motor, and the MCU 12 includes a communication timing determination unit 121 that outputs a communication execution command when it is determined that it is a timing for executing communication between the MCU 12 and the pre-driver 13 by determining whether it is the timing for executing the communication between the MCU12 and the pre-driver 13 and a communication unit 122 for executing the communication between the MCU12 and the pre-driver 13 when the communication execution command is input. The communication timing determination unit 121 determines that a timing that does not overlap with a timing at which noise is generated due to a factor other than the communication between the MCU 12 and the pre-driver 13 is a timing at which the communication between the MCU 12 and the pre-driver 13 is executed.SELECTED DRAWING: Figure 3
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