The uniaxial heliostats in conventional tower solar energy mirror field are unsteady and easy to be damaged. To solve this problem

a control system of tower solar energy mirror field based on triaxial support heliostats was proposed and a unique triaxial support heliostat was designed. According to the actual operation needs

the method of mixed control of the program and sensor was adopted to realize real-time monitoring of the solar light. In order to improve the heat-absorbing efficiency of the system

a method of image monitoring and processing was adopted

and the quantitative heliostat was periodically extracted for deviation correction. By three methods of sunlight tracking control

the three major computing modules based on PLC was designed to calculate the ideal position of the mirror in real time. The experimental results show that

the control system of the tower solar energy mirror field based on triaxial support heliostat can satisfy the requirements of actual project to realize sun location tracking.