Resarch On Superfluous Force Elimination Of Electro-Hydraulic Load Simulator And Its δ Rule Neural Network Control

The electro-hydraulic load simulator can reappear and simulate, on the lab condition, different air dynamical (torque) or hydraulic (torque) load on rudder when the aerocraft or the ship move normally, then we can check the response ability of the rudder worked under the different load above. We can let forecast, hybrid simulation experiment on the lab condition in stead of demolishing, not resumptive, practicality and praxis experiment.The load system loads to rudder system one hand, on the other hand, the rudder system brings to bear the strong position disturb to the load system, so the compulsory flow come into being in the load system inevitably, if the load system can not responds this compulsory flow, the superfluous force is resulted from compulsory flow. If the superfluous force commixes the normal load force together as the output force of the load system brings to bear on the rudder system, the load precision must be reduced, so the passive dynamic load performance of the electro-hydraulic load simulator must be influenced badly, therefore, how to eliminate the superfluous force is the key technique of the high performance electro-hydraulic load simulator research.According to the configuration and its work principle of the electro-hydraulic load simulator, the transfer function model and the bond model of the electro-hydraulic load simulator system are built, especially we think over the electro-hydraulic servo valve port nonlinear performance, the liquid capacitance saturation performance, the dynamic performance of the servo valve and the flow nonlinear of the slip valve stage, etc. during we build the models, the aim of this is the accuracy request of the models.The influence of the parameter variety such as the stiffness of the spring load and the mass of the inertia load etc. to the rudder system and the load system is analyzed, and the frequency field performance and the time field performance are analyzed too, these work are the reference basis of the configuration design of the electro-hydraulic load simulator. The reason of the superfluous force coming into being and the basic performance are analyzed from physics meaning, and the influence reason of the superfluous force is analyzed too.The structure inner loop feedforward compensation tache is designed and used to eliminate the superfluous force, and the flow press electro-hydraulic servo valve is set to the load system as a leakage tache to eliminate the superfluous force, the model of the electro-hydraulic load simulator system with this special configuration is built. The inner special structure of the flow press electro-hydraulic servo valve with press feedback passage can be used to eliminate the superfluous force.The neural network control strategy based onδrule is introduced, and the design process of the load system neural network controller based onδrule is expatiated and the constringency performance of theδrule is analyzed. The output response signal of the load system with the neural network controller based onδrule can track the input signal, the passive dynamic load precision and the speediness performance of the load system is enhancedThe experiment research is worked on the electro-hydraulic load simulator experimental equipment, the RTW real time exploitation circumstance of Matlab software is used, and the control system of the experimental equipment is empolderd by speediness control prototype technique. The experiment research combined the mechanism structure and the control electrocircuit. The experiment research validates the theory analysis and the model of the electro-hydraulic load simulator is correct, and validates the method and the control strategy, in above chapter, of eliminating the superfluous force is effective in enhancing the load performance of the electro-hydraulic load simulator system.