The Optimal Design Of Three-axis Air Floatation Platform Based On H-PSO Algorithm

As an important equipment for the full physical simulation of the control system,the three-axis air floating platform is widely used to simulate the motion of satellites in the outer atmosphere.Using contractions air in high pressure gas mode between the bearing and the bearing seat,float the platform,which constitute a close to frictionless relative motion,and then simulate the satellite in outer space interference torque small mechanical movement environment,in order to facilitate in the approximate real environment comprehensive check its function index,performance,reliability and movement.So how to reduce the interference of ground environment as much as possible moment became the three axis platform design,the key technologies in all interference torque due to gravity the unbalance torque is affect the normal use one of the main causes of air floatation machine,so how to reduce as much as possible in the design of unbalanced moment on the effects of the experiment became the cause we attach great importance to the problem.Research institutions at home and abroad have carried out a series of optimization studies on the unbalanced moment of the air floating platform,and established a full simulation model to simulate the movement of the air floating platform.Academia in recent years,the algorithm of three axis gas floating platform simulation,a series of optimization research,but when calculating the unbalance torque has tend to fall into local minimum solution or speed slower,this article first through the three-dimensional modeling of the truss type gas platform to model,then using the finite element method for cylindrical truss type three axis platform model is analyzed,and combining the analysis software of statics and kinematics analysis,finally concluded three axis platform under various posture imbalance torque formula,which limit the scope of research variables,In other words,the arm length and pipe thickness of the truss type air floatation platform were evaluated by discrete correlation.Terms by academia and industry the most commonly used search algorithm of particle swarm optimization algorithm combined with annealing form is as the computing time step by step through the fixed step search factor coefficient and other forms in front of,to control the search speed and then change the algorithm of particle swarm algorithm the unbalanced moment of three-axis air floating platform to optimize the performance of the formula of purpose;Compared with the traditional particle swarm optimization(PSO)and genetic algorithm(GA),the optimized algorithm is faster and has smaller error,which improves the precision of the calculation and control process of the three-axis air floatation platform and the sensitivity of the sensor.It will be helpful for the future production and optimization design of the performance index of the three axis air floating platform simulation satellite in outer space simulation experiment.