Development of auto­oscillating system of vibration frequency sensors with mechanical resonator

Examining a cavitation heat generator and the control method over the efficiency of its operation

“…For the approbation of the control method developed, a tuning-fork oscillator sensor [22] was placed in a flexible support of the cavitation heat generator. Vibrations were measured at several temperature values.…”

Application of electromagnetic fields for intensification of heat and mass exchange in combined gas-liquid processes

“…The main disadvantage of such measuring instruments is presence of nonlinearity that complicates choice of the resonator type [13]. A self-oscillating system of vibrofrequency sensors with a varying character of nonlinearity proposed in [14] substantially simplifies development of resonator sensors.…”

“…pipe (1); rod (2); ionizer (3); water distributor (4); rotameter (5); valve (6); vessel (7); milliammeter (8); rectifier (9); autotransformer (10); cylinder with CO 2 (11); reducer (12); valve (13); flow regulator (14); rotameter (15); pipes (16,17); vibrofrequency sensor (18); oscillograph (19); power supply unit (20)…”

Development of the program for self­tuning a proportal­integral­differential controller with an additional controlling action

“…While developing the subject of non-linear controllers, authors of ref. [5] obtained a transfer function of the resonator, which predetermines the non-linear properties of control object. To conduct the study, the authors constructed a simulation model in order to determine stability of the amplitude and the frequency of auto-oscillations.…”