The Temperature Control And Compensation System For The Certain Laser Gyro Strapdown Intertial Measurement Unit

With the development of the Inertial Navigation, the strap-down Inertial Navigation system is widely used. According to the disadvantage of low precision and instability of zero offset presented by the domestic laser gyro and accelerator, this paper proposes a integrated method of error-compensation based on a series of analysis, ratiocination, and experiment. Making the inertial navigation system to meet precision of the system is the object of this paper, so the content of this paper is the following:Put in order,compare,analyses it on the basis of data gathered,Put forward based on the artificial neural. The model carry on method that data fit is it study temperature. Impact on error relation to come,thus set up error model then compensate.At first, the paper prescribes the make-up, principle of the strap-down inertial system. The design of the temperature control system are discussed in detail, thus error model for compensation is set up.In the second part, we discuss temperature hardware and software design for acceleration of a certain IMU, finishes the hardware design based on ADμC812 and software design on PI control.On the base of the theory analysis, we comprehended the states of the navigation system bias in the various temperature environments. And we got the experiment data. Then the test data indicates the effectiveness of the dynamic error compensation algorithm.Then, according to the system desire, we introduce the compensation method and the model, and test temperature error compensation.At last, we describe the whole work of the paper, and look forward to the later study work.