| 摘要 |
FIELD: measurement technology. SUBSTANCE: structure to control error of fibre-optical rotational speed transducer generates electromagnetic waves propagating in opposite directions, passing through modulator 19 shifting optical phase and working from generator 20 modulating phase. They both can introduce second harmonic distortion leading to errors of output signal of transducer. Control over contribution of modulator 19 shifting phase if this modulator includes piezoelectric body wound by part of optical fibre is carried out by installation of body between layers having nonlinear rigidity. EFFECT: increased authenticity of control over error of fibre-optical rotational speed transducer. 1 dwg |
