A method suitable for upgrading the parameters of the whole production process of inertial measurement unit

Abstract

The invention relates to a method applicable to parameter upgrading in the whole production process of an inertial measurement unit. The method comprises the following steps: (1) before sealing and covering, an embedded type program and an initial calibration parameter are written into an inertial measurement unit Flash; (2) after finishing a screening test stage and a temperature compensation test, the inertial measurement unit upgrades a zero-position temperature compensation coefficient and a scale-factor temperature compensation coefficient; (3) after finishing a normal-temperature calibration test, the inertial measurement unit upgrades a normal-temperature calibration compensation coefficient and a cross coupling compensation coefficient; (4) an accuracy verification test is finished. The method has the advantages that the problem of needing to correct the embedding type program for multiple times in the traditional production process of the inertia measurement unit is solved; in the whole production process, the embedded type program only needs to be written into the inertial measurement unit once, then corresponding parameters are upgraded according to the production condition, and a header file of the embedded type program does not need to be corrected, so that artificial errors are reduced, the safe and reliable effects are achieved ,and the applicability to large-batch production of the inertial measurement unit is achieved.

Description

technical field [0001] The invention relates to a method suitable for upgrading parameters in the whole production process of an inertial measurement unit, in particular to a method for separating an embedded program of an inertial measurement unit from product parameters, and belongs to the technical field of inertial measurement units. Background technique [0002] An inertial measurement unit integrated with a microsensor (micromechanical gyroscope and accelerometer), a microprocessor (ARM or DSP) and a circuit can provide the angular velocity and linear acceleration of the carrier in real time. It is currently used in tactical weapon control and strategic weapon telemetry, etc. has been widely used in the field. [0003] The inertial measurement unit needs to conduct screening tests, temperature compensation tests, normal temperature calibration tests, and accuracy verification tests during the entire generation process. After delivery to the user or when returning to th...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a method suitable for upgrading the parameters of the entire production process of the inertial measurement unit. This method solves the problem that the embedded program needs to be modified when the parameters are upgraded in the traditional method, and can effectively prevent modification The software introduces the risk of errors, is simple, convenient, safe and reliable, and is suitable for mass production of inertial measurement units

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