High-speed stability single-shaft test rotary table

The invention discloses a high-speed stability single-shaft test rotary table which comprises a mechanical table body connected with an electric cabinet, the mechanical table body comprises a base, a main shaft is installed in the base through a main supporting bearing and an auxiliary supporting bearing, and a slotless motor used for driving the main shaft to rotate is further arranged in the base. The upper end of the main shaft is connected with a table top arranged above the base, an angle encoder is installed at the lower end of the main shaft, the angle encoder comprises a grating drum installed at the lower end of the main shaft, and a plurality of reading heads installed on the base are evenly distributed on the side portion of the grating drum; the electric control box comprises a machine shell, a control circuit board connected with the angle encoder and a linear power amplifier connected with the slotless motor are arranged in the machine shell, and the linear power amplifier is connected with the