Abstract
A method for steam turbines 3D geometry optical control for effective heat power equipment quality improvement is proposed. It is shown that technical characteristics of the developed optical phase triangulation method for precision contactless geometry diagnostics of steam turbines meet modern requirements to 3D geometry measuring instruments and are perspective for further development. It is shown that used phase step method provides measurement error less than 0.024% of measurement range.
Highlights
In the field of increasing dynamic range of phase triangulation methods measurement it is necessary to develop phase steps method for phase field expansion for the purpose of determination an absolute value of phase shift
Within performance of this work the new method of an optical phase triangulation with an expanded dynamic range of measurement based on phase steps method and pixels binary coding method is offered [1]
We will carry out an assessment of an error of an optical phase triangulation method for precision contactless steam turbines geometry diagnostics
Summary
In the field of increasing dynamic range of phase triangulation methods measurement it is necessary to develop phase steps method for phase field expansion for the purpose of determination an absolute value of phase shift. Within performance of this work the new method of an optical phase triangulation with an expanded dynamic range of measurement based on phase steps method and pixels binary coding method is offered [1]. In combination with phase steps method, the pixel binary coding method provides the greatest possible range of measurement. The offered method of an optical phase triangulation for precision contactless diagnostics of steam turbines geometry allows to increase the dynamic range of measurements in more than 10 times.
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