Error Analysis Of Missile's Hardware-In-the-Loop Simulation System

Hardware-In-the-Loop Simulation (HILS) is an essential research means in the weapon system development. Accredited HILS system plays an important role in weapon system development and design finalizing.This paper takes a Missile HILS system as the research object, analyses it's error, ascertains it's main source of error, and investigates all kind of error's affection to the result of simulation. The main content of this paper is:First, the theoretical model of the main components in simulation system is established through theoretically analyzing. Based on the theoretical model, we gives the simulation devices Step-Signal and measures it's Step Response, using System Identification method to estimate the parameter of the models, then establishes the actual models of the devices.Then, this paper analyzes the error source of the simulation system in detail, identifies the most influential error factor. After that, this paper researches the reason of target simulator's error and single axis simulator's error and it's transmission mechanism in the simulating process and it's influence. Then, it takes error of the target simulator's pitch mirror as an example, put the model into an missile three Degree of Freedom simulation system and investigate it's affection, the results proved that the error of pitch mirror increased the error of simulation.Finally, based on the analysis of HILS system, this paper ulteriorly discuses the problem about model Validation. The paper introduces some basic concept and method of model Validation, and then uses hierarchy process to evaluate credibility of missile simulation systems, the result proved the system's validity.