FIELD: machine building.
SUBSTANCE: measuring method for rotation speed of pneumatic vane-type motor, at which there measured is movement speed of vane in rotor slot by installing vane movement speed sensor in the vane in the form of constant magnet, and Hall sensor - in rotor, which interacts from time to time with vane magnet. The appeared pulses are fed to the inlet of programmable counter-divider which divides pulse subsequence into the number corresponding to the number of motor chambers. Pulses from which are supplied to inlet of electronic frequency metre which measures the frequency of measured shaft rotation speed.
EFFECT: enlarging manufacturing capabilities of the method owing to the possibility of measurement of rotation speed of built-in motors the access of which to the shaft is difficult.
2 cl, 2 dwg
