Abstract
A photoelectric detection system is a typical type of device widely used for detecting purposes based on unmanned aerial vehicles (UAV). Stability accuracy is the key performance index. Compared to traditional analysis methods aimed at unpredictable error-causing sources, assembly errors can be easily controlled during the manufacturing processes. In this research, an analysis method of assembly error effect on stability accuracy is proposed. First, by using kinematics analysis of homogeneous coordinate transformation, stability accuracy is comprehensively modeled and simulated. Then, by analyzing the manufacturing process, assembly errors of axis perpendicularities, run-outs and gyroscopes are defined and modeled. By simulating different carrier movements, the effects caused by assembly errors under various environments are studied. Finally, error sensitivity is proposed by using standard deviation analysis. Results show that the most sensitive assembly errors are identified, and ranked in order of sensitivity as follows: x-component of pitch axis perpendicularity, y-component of the azimuth gyroscope assembly, and z-component of the pitch gyroscope assembly. In conclusion, the results can be used as standards of manufacturing process improvements, and the proposed methods can be used to provide valuable references for real application scenarios.
Highlights
The unmanned aerial vehicle (UAV) photoelectric detection system is a typical type of device widely used in both military and civilian fields
They have been playing the roles of information transfer centers, and they are widely considered to be the most critical device for battlefield scouting based on UAV
Based on the kinematics of space mechanisms, those disturbances can be decomposed into angular motions around three vertical axes of inertial space, and they will all be coupled to line of sight (LOS)
Summary
The unmanned aerial vehicle (UAV) photoelectric detection system (hereinafter, the system) is a typical type of device widely used in both military and civilian fields. This kind of system is especially used for detecting purposes such as target search, identification, localization, tracking, damage effect feedback, etc. They have been playing the roles of information transfer centers, and they are widely considered to be the most critical device for battlefield scouting based on UAV. The field of sight (FOS) can be considered to be the vision plane chosen by the UAV operator. FOS is chosen to observe the target properly, and it is considered temporally stationary relative to the ground (or to the inertia space).
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