Abstarct: In this dissertation, using an analytical method, a model for designing and constructing a rotating electrostatic system as a sensor for the application of measuring the speed of electric machines is presented. First, studies of electrostatic systems are performed, various structures of rotating electrostatic systems are examined to achieve the result, and a model is proposed. With the help of finite element software and capacitance matrix elements, various variations are identified and accelerated using trial and error to design and build a practical version of an electrostatic device. The efficiency of modeling is examined using Simulixnk simulation in MATLAB software and a few steps later the theory and results obtained from computational software are tested by building a laboratory. The sample is made by answering the basic design questions of this device, the number of poles, the design and the amount of drive voltage using printed circuit boards. Stator device tests are performed with the help of alternating and direct voltage. The results obtained in practical experiments show that by rotating the rotor of the speed measuring device and by applying zinc motion from the stators, the voltage signal observed on the other stator was completely affected by the rotation of the device rotor, which itself used couplings. It is specially connected to the rotor of another electric motor that we need to read. This has been confirmed with the help of software simulations. Electronic machines have very low current flow and losses. Electronic currents in electronic machines are usually fast and have high efficiency.