Abstract—Improving digging accuracy is a priority when constructing roads or buildings in urban environments due to infill development and previously laid utilities. The hydraulic shovel excavator is the most versatile construction equipment. The excavator is used on most construction sites of buildings, structures and road network. Improving digging accuracy is being considered for a hydraulic shovel excavator. The current legislation of Russia establishes strict requirements for the accuracy of earthworks, in particular, a shortage of soil less than 0.05 m is allowed. When carrying out earthwork to solve many construction problems, excessive soil removal is not allowed due to a violation of its structure. Modern excavators are equipped with a control system that allows you to assess the external conditions and the position of the working mechanism. To improve the digging accuracy, the author of the article proposes a method for making adjustments to the control system of the excavator working mechanism based on PID control. This method is based on an analysis of excavator position data and several previous positions to better predict changes in excavator bucket edge position.