[Answer] How Does a Robotic Arm Ensure Its Zero Position?

[Answer] How Does a Robotic Arm Ensure Its Zero Position?

There are several ways to do this. The simplest, most economical, and most practical solution is to use a limit switch, which is often the best method for position detection in low-cost systems. Another option is an encoder. A high-quality encoder can also detect the zero position very accurately, but considering cumulative error, it is better to use the encoder together with a limit switch. As a supplement to limit switches, non-contact switches such as photoelectric sensors can also be used.