One of the most important and complex issues in the automation of technological processes is control automation. At present, active control is the most promising, aimed at ensuring the required quality of dimensional and other parameters of products in the very process of their production, at automating high-precision technological processes, reducing losses from rejects and control costs. In modern production with the help of active control means, the problem of increasing the manufacturing accuracy can be solved by choosing a rational control algorithm. To create an effective control system for the accuracy of machining a part, active control devices are often used that work according to various algorithms. Most modern machine tools are equipped with active control sensors that allow measuring the dimensions of the manufactured parts and setting up the machines during operation. The sensors are controlled by microprocessor blocks, which allow additional control to be introduced and the machine to adapt to changing processing conditions, which increases productivity and accuracy. Modern software allows you to effectively control the processing process, therefore, the choice of a rational control algorithm plays a special role.