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Precision centrifuge
The aerospace science and technology institute's Beijing Aerospace Control Instrument Research Institute organized internal R&D forces to carry out technical research and achieved breakthrough innovation results. One is to propose a joint detection method of multi-axis error coefficients and cross-coupling error coefficients, which provides a technical means for accurate detection of a large number of high-precision accelerometers. The second is to break through the dual-axis rotation coupled modulation technology, put forward multi-position information fusion angle measurement, equal precision and servo real-time precise control technology, and achieve advanced angular position accuracy, speed stability and other indicators. The third is the invention processing precision dynamic monitoring method and the polymer surface coating process, which improves the processing precision and stability of the equipment structural parts, significantly prolongs the service life of the electric transmission device, and effectively solves the problems of instant circuit breaking, job hopping and the like. This achievement achieves the comprehensive detection of the accelerometer's input shaft, output shaft, pendulum shaft and its cross-coupling error coefficient. The detection range covers 10-10g to 90g, and the steady-state acceleration given accuracy reaches 4×10-6.
This achievement authorized 11 invention patents and 3 utility model patents, and won the first prize of China Machinery Industry Science and Technology Award. The expert group of the China Machinery Industry Federation’s scientific and technological achievements appraisal believes that this achievement has reached the international advanced level, and some of the technical indicators have reached the optimal level of the international similar products. The seven types of standardized spectral products have been formed in the precision centrifuges, biaxial rotation modulation turrets, and automatic single-axis turrets testing equipment invented in this project, and have been introduced to the market in large quantities, effectively supporting the technical breakthroughs of high-precision and high-range accelerometers. The development and production promoted the development of inertial technology and precision instrumentation in China and improved the level of high-end equipment manufacturing.
(Original title: Aerospace Science and Technology's large-scale high-precision accelerometer detection technology and series of equipment have reached the international advanced level)
High-precision accelerometer innovation promotes the development of precision instrumentation
[China Instrument Network Instrument R&D] Accelerometers are widely used in aerospace, aviation, marine, weaponry, and resource exploration and other military and civilian fields. Their accuracy directly affects the accuracy of carrier rockets, the accuracy of intersection docking for manned space projects, and the exploration of resources. Comprehensiveness and accuracy. The accelerometer detection technology is the basis of inertial technology and the guarantee of engineering application. Research in related fields in China started late, and there is a big gap with foreign countries in terms of detection accuracy and scope. As accelerometer calibration and detection technology and equipment can be applied to the military field, foreign developed countries are strictly blocked by China, and the detection of large-scale high-precision accelerometers can be used for reference without reference to mature technologies, which has become an important technological bottleneck restricting the development of related industries in China.