State identification device, state identification method and mechanical device

A state identification method of a state identification device, comprising:

• extracting, via a processor, a feature amount from physical data of a tool which shifts to a plurality of operation states;
• calculating, via the processor, a similarity between the extracted feature amount and a feature amount stored in a memory;
• determining, via the processor, an operation state of the tool based on the calculated similarity;
• and
• determining, via the processor, a region in the memory that serves as a storage destination of the extracted feature amount based on a determination result by determining the operation state, wherein
• the memory is provided with a region that serves as a storage destination of the extracted feature amount for each of the plurality of operation states to which the tool shifts.

A mechanical device, comprising:

• a tool that shifts to a plurality of operation states;
• a sensor that detects physical data of the tool;
• a processor that is communicatively coupled to the machine and the sensor, the processor configure to:
• extracts a feature amount from the detected physical data;
• provide a region as a storage destination of the extracted feature amount for each of the plurality of operation states to which the tool shifts;
• calculate a similarity between the extracted feature amount and a feature amount stored in a memory;
• determine an operation state of the tool based on the calculated similarity;
• and
• determine the region serving as the storage destination of the extracted feature amount based on a determination result.