Study On Application Of Accelerometers In Platform Stabilized System

Mobile Opto-Electronic stabilized Platform (abbreviated to MOEP below) has been used widely. To conquer the influences including the carrier locomotion and the other factors impacted to MOEP, the system of stabilized platform is made up by using gyroscope to measure the angular velocity relative to inertia space. Based on the theory about synthesis of angular velocity and acceleration with liner accelerometers, this paper discusses the application of accelerometers and the non-gyroscope platform stabilized system uses accelerometer instead of gyroscope in MOEP.At first, the general theory of synthesis angular acceleration and velocity with linear accelerometers is researched and proved in this paper. On the foundation of analyzing the applied barrier in platform stabilized system of angular locomotion, a new method that changes the installation structure from alterable space into plane, is put forward to solve the problems, so that the application of this theory in MOEP becomes possible.The development of accelerometers in the world is summarized in this paper, and some kinds of them are discussed in detail. According to the formula of synthesis angular velocity and acceleration, this paper analyzes the desired measure precision of the acceleration and finds out the appropriate accelerometers for lab or engineering.By introducing the double-axis silicon accelerometers ADXL202 and its application in angular locomotion measure device, the design process of this device is emphasized. Through experiments on the testing rotation platform, performances indicate the validity about the synthesis of this theory and improving method.At last, this paper analyzes the function of angular acceleration loop. Through the study with non-linearity friction on simulation model of the stabilized system, in theory the analysis of the angular acceleration loop's contribution is given. In testing platform, the measure devices of angular acceleration and velocity constitute the double loops, they are angular acceleration loop and angular velocity loop. And this experiment gives the proof that the angular acceleration loop could eliminate the errors which are taken by the motor's reversing.