本文選題：運梁車 + 電液比例��； 參考：《燕山大學》2014年碩士論文

【摘要】：按照中鐵二十三局成都地鐵2號線東延段線25m、30m雙線二箱砼箱梁的運輸要求，燕山大學與北京百善重工有限公司合作研制了用于預制梁運輸和架設的YL450t運梁車，本課題主要對YL450t運梁車電液控制系統(tǒng)進行了設計研究。 首先，按照使用工況要求，確定了YL450t運梁車的設計參數(shù)，在整車機械結構設計方案的基礎上，對整車液壓系統(tǒng)進行了全面設計。選擇了實用合理的驅動行走方案，并進行了閉式系統(tǒng)的設計計算；針對開式系統(tǒng)中關鍵部分的轉向系統(tǒng)，研究了其轉向原理，建立了數(shù)學模型，并最終確定了比例多路閥與負載敏感技術相結合的轉向方案；對液壓系統(tǒng)中關鍵部件進行了計算選型，最后給出了整車的液壓系統(tǒng)原理以及關鍵部件的選用。 其次，針對運梁車轉向中出現(xiàn)的轉向不夠協(xié)調，，響應較慢等問題，分別利用常規(guī)PID和模糊PID控制策略對運梁車轉向系統(tǒng)進行了優(yōu)化。建立運梁車轉向系統(tǒng)的數(shù)學模型，設計常規(guī)PID和模糊PID控制器，應用MATLAB/Simulink軟件，分別對兩種控制策略進行了轉向系統(tǒng)仿真分析，與常規(guī)PID控制策略相比，模糊PID控制可以更加有效提高運梁車大負載下的轉向速度，減小轉向的穩(wěn)態(tài)誤差。 最后，設計與實現(xiàn)了基于CAN總線的LY450t運梁車電控系統(tǒng)。針對運梁車主要液壓元件的電氣特性，合理選擇了相關電控元件，設計了電液控制系統(tǒng)，包括運梁車網絡拓撲結構設計，控制器布局與針腳分配等；在BODAS軟件開發(fā)環(huán)境下，編寫了運梁車實現(xiàn)各種模式下的動作任務的控制程序等。
[Abstract]:According to the transportation requirements of 25m / 30m double-line two-box concrete box girder in the east extension of Chengdu Metro Line No. 2 of China Railway 23 Bureau, Yanshan University and Beijing Beshan heavy Industry Co., Ltd. have jointly developed a YL450t beam conveyer for the transportation and erection of prefabricated beams. In this paper, the electric-hydraulic control system of YL450t beam-carrying vehicle is designed and studied. Firstly, according to the requirements of the working conditions, the design parameters of the YL450t beam carrying vehicle are determined, and the hydraulic system of the whole vehicle is designed comprehensively on the basis of the mechanical structure design scheme of the whole vehicle. The practical and reasonable driving scheme is selected, and the design and calculation of the closed system are carried out, and the steering principle of the steering system is studied, and the mathematical model is established for the key part of the open system. Finally, the steering scheme combining proportional multi-way valve with load-sensitive technology is determined, and the key components in hydraulic system are calculated and selected. Finally, the principle of hydraulic system and the selection of key components are given. Secondly, aiming at the problems of uncoordinated steering and slow response, the steering system of beam carrier is optimized by using conventional PID and fuzzy PID control strategy, respectively. The mathematical model of steering system of beam conveyer is established, and the conventional PID and fuzzy PID controller are designed. The two control strategies are simulated and analyzed by using MATLAB/Simulink software. Compared with the conventional PID control strategy, the two control strategies are compared with the conventional PID control strategy. Fuzzy PID control can effectively improve the steering speed and reduce the steady state error of steering. Finally, the electronic control system of LY450t beam carrier based on CAN bus is designed and implemented. According to the electrical characteristics of the main hydraulic components of the beam conveyer, the relevant electronic control elements are reasonably selected, and the electro-hydraulic control system is designed, including the design of the network topology, the layout of the controller and the distribution of the pin, etc. The control program is compiled to realize the action task in various modes.
【學位授予單位】：燕山大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U445.3;TP273

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