Performance Analysis And Application Research Of Vehicle Engine Motion Simulation Platform

Whether in the field of vehicles,ships,or aerospace,the performance and life of an engine are key technical issues that affect its normal operation.Engine performance testing and life prediction are important content of people’s research on the engine,and the indoor tilt dynamic test of the engine is also a necessary content of the research.Aiming at the performance test of vehicle engines working in different environments,this paper proposes a new parallel motion simulation platform as the engine test motion simulation platform.The specific research content is as follows:First of all,according to the actual operating environment of different vehicles,this paper determines the technical indicators of the engine test motion simulation platform,and puts forward the design requirements of the engine motion simulation platform.Based on the technical indicators and design requirements of the engine motion simulation platform,based on the configuration of the 3-RPS mechanism with unaccompanied motion characteristics,this paper proposes a motion simulation platform that can meet the requirements of the motion simulation platform by adding unconstrained redundant drive branches.Using the required new configuration of 2-RPS/2-UPS/PS parallel mechanism,the continuous motion capability of the mechanism is analyzed and researched.Secondly,by studying the kinematics of the engine motion simulation platform,the position inverse solution and the speed Jacobian matrix of the mechanism are obtained;according to the technical indicators of the engine motion simulation platform,specific kinematics numerical examples are given,and Matlab software and Adams software performs theoretical calculations and simulation analysis to verify the correctness of the kinematics results;analyzes the factors affecting the work space of the parallel kinematics simulation platform,and studies the work space of the parallel kinematics simulation platform based on the inverse kinematics solution;and then analyzes The static characteristics of the parallel motion simulation platform is obtained by the force Jacobian matrix.Then,based on the dexterity index,the carrying capacity index and the motion/force transmission performance index,the performance of the parallel motion simulation platform was analyzed,and the dexterity index and the carrying capacity index were obtained by using the Jacobian matrix and the inverse Jacobian matrix of the mechanism.Spiral theory calculates and obtains the motion/force transmission performance indicators of the mechanism,analyzes the performance graph of each indicator,and obtains the relationship between these performance indicators and the various parameters of the mechanism.Finally,according to the technical indicators and design requirements of the engine motion simulation platform,the body structure of the prototype was designed and optimized.The prototype model and modal analysis was analyzed using ANSYS,and related products were selected,an experimental prototype and control system was built.A prototype of a parallel motion simulation platform was obtained,and related experiments were carried out to verify.