Figure 4.
Self-designed experimental system for shearer cutting coal: (a) The experiment bench of shearer cutting coal; (b) The installation sketch of accelerometers; (c) Vibration signals processing device.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.