Trace Data Collection System for Motor Control Devices
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Solution Overview
Problem
Existing trace data collection systems face challenges in precisely controlling the timing of data collection by motor control devices due to short control cycles and limited memory capacity, making it difficult to obtain detailed data at the required timing, and simultaneously comparing multiple pieces of trace data from different motors.
Innovation Solution
A trace data collection system comprising a controller and motor control devices, where the controller determines and transmits a trace start signal based on conditions such as temporal relationships and data values, allowing precise control over trace data collection, and an operation terminal displays the data as graphs to facilitate comparison.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If trace data is collected by motor control device at high speed due to short control cycle, then data collection frequency is improved, but memory capacity is exceeded and detailed data at required timing cannot be obtained
Solution Approach 1:
The patent segments the data collection function into two parts: the motor control device collects data at high speed and stores it temporarily in its memory, while the controller collects data at lower speed and stores it in its larger memory. This segmentation allows each device to operate within its memory capacity constraints while achieving overall high-frequency data collection.
Solution Approach 2:
The motor control device acts as an intermediary that temporarily holds trace data in its memory before transferring it to the controller. This intermediary role allows the system to maintain high data collection frequency without exceeding the controller's memory capacity, as the motor control device buffers the data flow.
2Adaptability or versatility
If multiple pieces of trace data from different motors are collected simultaneously, then comparison capability is improved, but synchronization accuracy deteriorates due to independent collection timing
Solution Approach 1:
The controller sends a trace start signal to synchronize data collection across multiple motor control devices. The motor control devices use this signal as feedback to coordinate their data collection timing, ensuring that all devices start collecting data at the same moment despite having independent control cycles.
Solution Approach 2:
The controller performs a preliminary action by sending a trace start signal before the actual data collection begins. This preliminary synchronization signal ensures that all motor control devices are ready to collect data simultaneously, establishing a common reference point for accurate comparison.
3Device complexity
If trace data collection is performed without centralized control, then system complexity is reduced, but collection timing precision deteriorates
Solution Approach 1:
The patent merges the control function with the data collection function by having the controller send a trace start signal that simultaneously triggers data collection in multiple motor control devices. This merging ensures synchronized timing without requiring complex independent coordination mechanisms in each device.
Data Source
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AI summary
Provided is a trace data collection system (1), including: a controller (2) including: a trace start signal transmission determination unit (22) configured to determine a condition for transmitting a trace start signal; and a trace start signal transmission unit (23) configured to transmit the trace start signal; and a motor control device (3a, 3b) including: a trace start signal reception unit (32) configured to receive the trace start signal; a trace start determination unit (34) configured to set at least reception of the trace start signal as a trace start condition; and a first trace data collection unit (35) configured to collect first trace data relating to a motor.