Automatic control of working car engine vibrations using multi-stage discrete Fourier transformation

There are questions connected with work of automotive internal combustion engines quality control digitalization. The research goal is formalization of necessary and enough condition of automatic control of such engines' vibration levels by discrete Fourier transformation digital methods without completing hardware-intensive multiplication operations. During research there are used methods of mathematic and hardware-intensive modeling of digital algorithms of discrete Fourier transformation work and differential filtration on programmed logical integral devices. There are principals of this engine vibrations' level by digital methods of multi-stage discrete Fourier transformation, which does not require completing algorithmic multiplication operations. There are given formulas of such digital signals' transformation of differential digital filters by only algebraic addition of timing counts of these signals. The research results have shown and confirmed a possibility of lowering hardware costs with hardware and software realization of digital algorithms of working automotive internal combustion engine vibrations on programmed logical integral devices.