2 results about "GOT measurement" patented technology

The application provides a kind of terahertz wave power distribution measurement method based on circular sensor, belong to engineering and physical experiment measurement technical field, this method includes: obtaining the quantitative relationship of the output total power of circular sensor and the power density of measurement plane;Establish the resolution of the measured power distribution image of measurement plane, the constraint condition of measurement back-propagation error and the translation step of sensor;According to the translation step control of sensor, the translation measurement of circular sensor in measurement plane is carried out, to obtain the measurement power data set;According to the resolution, the measurement plane is discretized and the objective function is constructed, and the discrete power density of the measurement plane is obtained by solving the objective function;The measured power distribution image of measurement plane is reconstructed, and the measured power distribution image of measurement plane is output.The application has the advantages of high precision, adjustable resolution and controllable error, and is suitable for high-precision measurement scenarios of various engineering and physical experiments.

This invention provides a method for measuring the rotational error of a machine tool spindle based on installation error correction. A high-precision plane mirror is fixedly installed at the center of the bottom of the spindle tool head using bolts, and a laser interferometer is fixedly installed below the high-precision plane mirror. Before measurement, the corresponding data of different installation error values ​​and their caused residual synchronization errors are quantitatively calculated. Then, the installation error control range required to keep the residual synchronization error caused by the installation error within the required measurement accuracy is calculated. During testing, the installation error of the measuring device is obtained. Then, the installation error is adjusted by adjusting the installation position of the laser interferometer until the maximum amplitude of the basic synchronization rotational error extracted from the measurement data (i.e., the installation error) reaches the required installation error range. After the installation error of the measuring device is adjusted, data is collected to obtain the total axial rotational error data of the spindle, and the axial synchronous and asynchronous rotational errors of the spindle are calculated.