To address the issues of uncontrollable motion during water flow simulation of sea conditions,as well as low simulation levels and insufficient degrees of freedom in conventional sea condition simulation platforms,a method of using an eight-degree of freedom motion platform to simulate advanced sea conditions for wave surge testing is proposed.A series parallel eight-degree of freedom advanced sea state environment simulation platform is designed,which is composed of linear motion platform,rotating mechanism and 6 degrees of freedom(6-DOF)parallel mechanism.The platform has large motion acceleration,many degrees of freedom and various motion modes.Based on EtherCAT real-time bus technology,an eight-axis and seven linkage motion control algorithm is designed.Inertia matching technology is used to suppress jitter and noise,and accurate,stable and synchronous control(less than 1 μs)of wide inertia range is realized.The real-time precision compensation technology based on external signal receiver and the dual gear backlash elimination technology are designed to improve the speed accuracy,speed stationarity and positioning accuracy(less than 10 μm).The composite superposition sway,file simulation,composite superposition sway and file simulation superposition motion and real-time simulation motion modes are designed,which can simulate up to level five high sea conditions or simulate the underwater,surface or airborne motion conditions after the real flight data is recharged,and complete the attitude simulation test of the tested navigation system.
series-parallel mixinginertia matchingreal-time precision compensationadvanced sea state simulation
NETL
NSTL
维普
万方数据
