Installation system and method for rotary encoder redundancy detection

The invention relates to an installation system and method for rotary encoder redundancy detection. The installation system includes a main gear, a slave gear, a first U-shaped installing plate and a second U-shaped installing plate, wherein the main gear sleeves an encoder installing shaft, and the main gear is fixedly installed on the first U-shaped installing plate; the slave gear sleeves a slave gear shaft, and is fixedly installed on the second U-shaped installing plate; and the slave gear is connected with the main gear in a meshed mode. When the installation system is used, a main encoder is used for detecting the operating data of the encoder installing shaft; the encoder installing shaft drives the main gear to rotate, the main gear drives the slave gear to rotate, the slave gear drives the slave gear shaft to rotate, a slave encoder is arranged on the slave gear shaft, and the slave encoder indirectly detects the operating data of the encoder installing shaft. When a fault occurs in the main encoder