The robot controller is the core brain of the robot control system. The main task of the controller is to solve the forward and inverse kinematics of the robot to achieve the mutual conversion between the operation space coordinates and the joint space coordinates of the robot, complete the trajectory planning task of the robot, and realize high-speed servo interpolation operation and servo motion control. The robot controller consists of robot controller hardware and robot controller software. The software part of the robot controller is the "heart" of industrial robots. With the development of technology, there have been research achievements of varying degrees in the application software of industrial robots from the lower computer to the upper computer.

The market share of controllers is basically the same as that of robots, and domestic enterprises have not yet formed a large market share of controllers. The controller, software and the main body are generally designed and developed independently by the robot manufacturer. At present, the controllers of mainstream foreign robot manufacturers are all independently developed based on the general multi-axis motion controller platform, and each brand of robot has its own control system to match it. Therefore, the market share of controllers is basically the same as that of robots, and domestic enterprises' controllers have not yet formed a competitive advantage in the market.

Domestic enterprises' robot controller products have become relatively mature and are the key components with the smallest gap compared to foreign products in robot products. The main gap between domestic controllers and foreign products lies in the ease of use of control algorithms and secondary development platforms. The development of control systems involves a considerable number of core technologies, including hardware design, low-level software technology, and upper-level functional application software. With the accumulation of technology and application experience, the hardware platforms adopted by domestic robot controllers do not have a significant gap compared with foreign products. The main gap lies in the ease of use of control algorithms and secondary development platforms.

In the coming years, domestic robots in China will experience rapid development, and the application market for domestic robot controllers is facing a good development opportunity, especially for enterprises that have been deeply engaged in the field of motion control for many years. The more axes a robot has, the higher the performance requirements for the controller will be: the degree of freedom of a robot depends on the number of its movable joints. The more joints there are, the higher the degree of freedom, and the higher the displacement accuracy. The number of servo motors it uses will also be relatively larger, that is, the more precise the industrial robot, the more servo motors it uses.