Research On Semi-physical Simulation Of Stabilization Loop Control In Platform Inertial Navigation System

Nowadays,the continuous development of science and technology and the ever-changing international environment put forward high requirements for the stabilization loop of the platform inertial navigation system.Not only its precision needs to be furtherly improved but also its product development cycle needs to be shortened.At present,the design of the stabilization loop of the platform inertial navigation system mostly adopts the serial research and development mode,and there are many problems,such as low efficiency and long cycle due to the lack of flexible testing means and poor human computer interaction ability.Rapid control prototyping has been a popular engineering research tool because it can effectively shorten the product development cycle.Therefore,aiming at the above problems,a study on the rapid control prototyping semi-physical simulation of the stabilization loop of the platform inertial navigation system is carried out.In this paper,firstly the model of the stabilization loop is established based on the analysis of the composition and principle of the stabilization loop of a certain type of inertial navigation system.After that,two control algorithms of PI type fuzzy control and lead-lag are designed based on the model.The simulation results meet the requirements of the index and show that the algorithms are reasonable and effective.Then the emphasis is put on the design of the semi-physical simulation system,in which the design project of the system is put forward and the architecture of the semi-physical simulation system based on cRIO(Compact RIO)is completed,which includes the selection of the cRIO simulation platform,the combing of the system interface,the construction of the software and hardware of the cRIO simulation platform,the design of the peripheral power drive circuit and the design and debugging of the program module in Labview.Finally,the open loop and closed loop system experiments are performed to verify the function of the rapid control prototyping semi-physical simulation system.The results of the experiments show that the system performs well.The research lays the foundation for the semi-physical simulation of the entire electrical part of the platform inertial navigation system.