DEVICE FOR VIBRATION TESTS Russian patent published in 1999 - IPC

FIELD: electronic engineering. SUBSTANCE: device has series-connected generator and vibrator, as well as series-connected vibrator converter, accompanying filter, amplitude detector, and proportionally-differentiating link. Second output of generator is connected to second in put of accompanying filter, and generator input, to output of proportionally-differentiating link. Device is provided with phase detector, differentiator and comparator connected in series. First and second inputs of phase detector are connected to accompanying filter output and second output of generator, respectively, and proportionally-differentiating link is made controllable. Its control input is connected to comparator output. Device ensures enhanced accuracy of maintaining the preset level of vibration loading by adjustment of parameters of proportionally-differentiating link. EFFECT: improved design. 3 dwg