Research Of Control And Test Technology For Linear Vibration Table With High Precision Based On MAPLESIM

PIGA(pendulous integrating gyro accelerometer) is a kind of inertial instruments used to measure the acceleration. And it is of great significance to study on the error modeling and testing techniques to improve the measurement accuracy of PIGA. It is commonly used the gravity field experiment, precision centrifuge experiment and high precision linear vibration table experiment to test and calibrate the coefficients of PIGA error model. Among them, the gravity field experiment can only provide input acceleration within 1g and unable to excite the quadratic coefficient, the precision centrifuge is not suitable for extensive analysis and research because it has a lot of error sources, need a long time and high cost to test, and is very complicated. Therefore, the study of high-precision linear vibration table test technology becomes more important.At present, the study, control and testing methods of the high precision linear vibration table is few in China. Through a new physical modeling method, this article is the first time in china to built good performance model of PIGA and high-precision linear vibration table, to research the control of precision linear vibration table with the idea of HAPAC, and to study the high-precision linear vibration table test technology by recombining model of PIGA and high-precision linear vibration table by Maple Sim, which is a powerful multi-domain modeling and simulation tools of complex systems. The main research contents of this paper are as follows.Study on the modeling method of PIGA based on Maple Sim. Firstly, the working interface, features and common modeling components of Maple Sim are analyzed and summarized in order to familiar with the application of Maple Sim. Then, the structure, working principle, dynamics model and the traditional modeling method of PIGA are studied, which lays the theoretical foundation for studying the modeling method of PIGA. Finally, the modeling method of PIGA based on Maple Sim are studied from the following three aspects: the selection of physical components and its parameters, the debugging and selection of servo circuit, the 3-D view and functional verification of model. And the PIGA model with good performance is acquired.Study on the control of high-precision linear vibration table based on Maple Sim. Firstly, the working principle and periodic disturbance of high-precision linear vibration table is studied and analyzed. Then the HAPAC control strategy for periodic disturbance is researched, and the compensation effect is verified by Simulink simulation, which lays the theoretical foundation for the control of high-precision linear vibration table based on Maple Sim. At last, the model of linear vibration table is builded by Maple Sim, and the control problem is studied by control compensation subsystem and error subsystem. And the model of the high precision line vibration is obtained.Study on the test technology of high-precision linear vibration table based on Maple Sim. Firstly, the PIGA model equation is studied and the PIGA gravity field test is conducted to calibrate the zero order and one term coefficient of its model equation. Then the high-precision linear vibration table test is carried out, and the experimental data are processed by integer periodic integral method and amplitude mean value method to calibrate the quadratic coefficient. Finally, the calibration results of the gravity field test and the high-precision linear vibration table test are compared and analyzed. The research of test technology has accumulated important test method and experience, which provides valuable reference for driving the test technology of high-precision linear vibration table.