Study on PIGA Test Method on Centrifuge

The experiment design of PIGA test on centrifuge has been studied. Based on the identification method for high-order coefficients of PIGA (pendulous integrating gyro accelerometer) on precision centrifuge with counter-rotating platform, which can isolate the rotary movement caused by centrifuge arm so as to improve the environment of PIGA test on centrifuge, the method of the D-optimal designs is used in the data processing for separating the error model coefficients to optimize the test plans. The relation between the different values of the factors taken in the testing procedures and the estimated accuracy is discussed according to the D-criterion by way of simulation analysis. The results of the simulation analysis show that by optimizing the values of the factors in a test plan, the calibrating accuracy can be greatly improved.