NUMERICAL CONTROLLER

• US 20180032067A1
• Filed: 07/21/2017
• Published: 02/01/2018
• Est. Priority Date: 07/27/2016
• Status: Abandoned Application

• Current Assignee: Fanuc Corporation
• Original Assignee: Fanuc Corporation
• Inventors: Maeda, Kouji
• Application Number:
  US15/656,100
• Publication Number:
  US 20180032067A1
• Time in Patent Office: Days
• CPC Class Codes: G05B 23/0221 Preprocessing measurements, e.g. data collection rate adjustment; Standardization of measurements; Time series or signal analysis, e.g. frequency analysis or wavelets; Trustworthiness of measurements; Indexes therefor; Measurements using easily measured parameters to estimate parameters difficult to measure; Virtual sensor creation; De-noising; Sensor fusion; Unconventional preprocessing inherently present in specific fault detection methods like PCA-based methods

Abstract

A numerical controller capable of suppressing a load on monitoring processing by monitoring only necessary items according to the operation state of a machine tool or the like includes a monitoring pattern storage unit loaded with a monitoring pattern defined for each operation state of the device to be monitored, a determination unit configured to determine the operation state of the device to be monitored, a monitoring pattern selection unit configured to acquire the monitoring pattern corresponding to the determined operation state from the monitoring pattern storage unit and create a monitoring list based on the acquired monitoring pattern, and a monitoring unit configured to monitor the device to be monitored based on the monitoring list and acquire the monitoring data.

Claims

1. A numerical controller configured to monitor a device to be monitored and acquire monitoring data, comprising:

a monitoring pattern storage unit loaded with a monitoring pattern defined for each operation state of the device to be monitored;

a determination unit configured to determine the operation state of the device to be monitored, acquire the monitoring pattern corresponding to the determined operation state from the monitoring pattern storage unit, and create a monitoring list based on the acquired monitoring pattern; and

a monitoring unit configured to monitor the device to be monitored based on the monitoring list and acquire the monitoring data.

2. The numerical controller according to claim 1, wherein the monitoring pattern contains one or more monitoring items and monitoring periods for the individual monitoring items, and the monitoring unit monitors the monitoring items at the monitoring periods.

3. The numerical controller according to claim 1, wherein the determination unit acquires a plurality of the monitoring patterns corresponding to the determined operation state from the monitoring pattern storage unit and creates the monitoring list by combining the plurality of the monitoring patterns.

4. The numerical controller according to claim 1, wherein the determination unit updates the monitoring list when the operation state is changed.

5. The numerical controller according to claim 1, wherein the determination unit updates the monitoring list at regular time intervals.