Study And Application Of Synchronous Motion Control Of Large Inertia Multi-axis Equipment In Wind Tunnel

The design and operation of wind tunnel equipment needs to deal with a large number of large inertia mechanisms,and a large part of them need to be driven by means of multi-axis synchronization.These motor drive shafts are of various types,such as multiple hydraulic shafts,multi-motor shafts and multi-electro-liquid mixtures.Control strategies are complex,and the degree-of-freedom of the controlled axis is one-way and multi-directional.The control quality of these mechanisms directly influences the test range of the model,the accuracy of the aerodynamic characteristics of the model and the experimental efficiency.Therefore,it is of great significance to carry out synchronous control research on large inertia equipment used in wind tunnel.It has some common control model in that synchronous control of large inertia equipment of wind tunnel,which are studied and analyzed in this paper.The main order reference model has poor adaptability to complex controlled objects,and cannot intervene in the disturbance in the load in time,but its control structure is simple and can effectively control the synchronous motion of most common simple mechanisms.The most widely used synchronous control model in various industrial fields is the master-slave model,which has certain advantages over the main order reference model,which can accommodate the interference caused by the main shaft,however,the main shaft cannot get the signal when the load of slave shaft is changed,and the overall performance is also limited by the performance of the main shaft.Coupled type synchronous control model has the advantage of the strongest adaptability and anti-interference ability,the disadvantage is that it needs coupling controller,which complicates the whole control structure,and the appropriate parameters are needed to be chosen,which increases the difficulty of debugging.Based on the above problems,a new synchronous control strategy is proposed in this paper,whic78 h combines the master and the coupled control model.The study of multi-type axis synchronous control is carried out to demonstrate the universal validity of the synchronized control strategy.The main research works are as follows:(1)The analysis of the large inertia synchronous motion equipment of wind tunnel,and the research on its control strategy.(2)Kinds of axis synchronous motor control system modeling,and the paper is modeled on the dual motor shaft,dual hydraulic shaft,electric-hydraulic hybrid axis respectively and driver of some attack angle.(3)Wind tunnel large synchronous movement of equipment control system design and multi-type axis synchronous motion simulation,the paper through a certain Angle of attack control system design to explore the methods of this type of organization control system,and then the multi-type axis synchronous motions are simulated to verify the wide validity of the synchronous control method mentioned in this paper.(4)The application of the synchronous motion control method,first sets up multiple types of synchronous motion systems in the laboratory,uses the methods mentioned herein to carry out the test,and the test results are good,and then,the method is introduced into an attack Angle control system to obtain satisfactory control effect.The results show that the control strategy proposed by the paper has better anti-jamming capability,which can improve the synchronization precision of multiple types of multi-axis synchronous motion systems,and can be successfully applied in the wind equipment.