Performance Analysis Of Horizontal Vibration In High-speed Elevator And Design Optimization Of Guidance System And Its Application

With development of economy, height of buildings has been increasing rapidly. As a result, more and more high-speed elevators are needed and stricter requirements for stability and comfort index are raised. There exist some problems in current procedures of products designing. Firstly, influences of elastic elements’parameters are neglected in roller guide selection. Secondly, it’s difficult to analyze horizontal acceleration of the cage quantitatively. Last but not least, fluctuation of roller guide parameters affects stability of performance in vibration reduction. Techniques of performance analysis of horizontal vibration in high-speed elevator and design optimization of guidance system are proposed and applied to actual R&D of the type KLK2 high-speed elevators. The main contents are as follows.Situations of horizontal vibration of high-speed elevator were summarized in Chapter 1, including horizontal vibration mechanism analysis, parametric design & optimization, rating of horizontal vibration, etc. Techniques of performance analysis of horizontal vibration in high-speed elevator and design optimization of guidance system were proposed and main contents of full text were summarized.Technique of elevator car system and guidance system modelling and influence factors of vibration was proposed in Chapter 2. Mathematic model of horizontal vibration system is established. Response of horizontal vibration of high-speed elevator was calculated based on Precise Integration Method (PIM). Influences of relevant parameters on horizontal vibration of elevator car were analyzed. Feasibility of above-mentioned method was verified by using the type Canny KLK2 high-speed elevator as example.Technique of approximate elevator vibration response model and its parameter design was proposed in Chapter 3. Set elevator vibration response as objective functions and established parameter design model of high-speed elevator vibration. Response surface approximate model of horizontal vibration acceleration peak to peak indicator was established based on Latin Hypercube Design and solved through Multiple Object Genetic Algorithm. Selected the ideal design solution based on min-max standardization method. Validity of above-mentioned method was verified by using the type Canny KLK2 high-speed elevator as example.Technique of design robustness assessment and optimization of guidance system of high-speed elevator was proposed in Chapter 4. Assessment of designing scheme robustness of guidance system was carried out based on Monte Carlo method. Set mean value and variance of elevator vibration response as objectives and established optimization design model of high-speed elevator vibration and robust optimal solution is obtained. Similarly, validity of above-mentioned method was verified by taking the type Canny KLK2 high-speed elevator as example.Aided system for design and optimization of guidance system in high-speed elevator was developed combined the enterprise project in Chapter 5. Verified effectiveness of the system and techniques proposed in this paper through the Type KLK2/VF1600/7.0 high-speed elevator.In the sixth chapter, further research was put forward after summarizing contents of the dissertation.