Research On Cabin Air Pressure Adjustment,Optimization And Compensation Methods For High-speed Elevator Design

In recent years,with the continuous improvement of the height of modern buildings,high-speed elevators,which are an indispensable means of transportation in high-rise buildings,have also been widely used and developed.In order to improve the ride comfort,this paper conducts research on the air pressure change rules in the car during the operation of the high-speed elevator,the optimization of the air pressure adjustment curve in the car,and the car air pressure change compensation control.In the first chapter,this paper analyzes the development status of high-speed elevators at home and abroad.Aiming at the problem of air pressure changes in the car during high-speed elevator operation,the research status of high-speed elevator aerodynamic and pressure characteristics,vibration and noise reduction technologies,and energy consumption and energy conservation technologies are summarized.Research content and significance.In the second chapter,In order to explore the air pressure change in the car when the high-speed elevator is running in the hoistway,a model for the pressure change of the air flow inside and outside the car is established.The accuracy of the model is verified through experiments.The influence of air pressure has analyzed the causes of ear pressure.In the third chapter,aiming at the problem of air pressure compensation for highspeed elevator cars,the influencing factors and objective functions in the design of the ideal air pressure adjustment curve of the car were determined,and the performance index model of the car air pressure adjustment curve was established.The adjustment curve was optimized and designed,and the generation method and process of the target curve were introduced and improved.Finally,the method of generating the proposed curve was verified by an example.In the fourth chapter,The common methods of air pressure regulation in enclosed spaces are introduced,and the basic principle of car air pressure compensation control is given.Aiming at the non-linearity,uncertainty and strong coupling of the highpressure elevator car air pressure change model,an iterative learning control algorithm was selected to design the compensation system controller.Aiming at the fact that the traditional iterative learning control algorithm has no model control,the selection of the learning law is complicated and may not be able to converge.An adaptive iterative learning control algorithm based on a reference model is introduced,and each control algorithm is verified by simulation experiments.In the fifth chapter,Based on the technologies of high-speed elevator car air pressure modelling,car ideal air pressure adjustment curve optimization and tracking compensation control,etc.,a high-speed elevator digital design system for car air pressure characteristic analysis and compensation optimization subsystem module was developed.The application of KLK2 high-speed elevator design of Kang Li Elevator Co.,Ltd.was verified.The sixth chapter summarizes the research work and results of the full text,and looks forward to the follow-up research work.