本文選題：機電無級傳動 + 混雜系統(tǒng)理論��； 參考：《華南理工大學》2014年碩士論文

【摘要】：機電無級傳動混合動力驅動系統(tǒng)（簡稱機電無級傳動系統(tǒng)，下同）兼顧機械和電氣端口，在進行能量轉換、耦合及分離時無需離合器與額外的起動電動機，具備在較寬速比范圍內實現(xiàn)無級變速傳動、使發(fā)動機在變負載情況下均能運行于最佳燃油經(jīng)濟線上，在減少燃油消耗、提升效率、優(yōu)化發(fā)動機性能等方面具有很大優(yōu)勢而成為研究的重點。 本文以具有自主知識產(chǎn)權的基于對轉雙轉子電機和雙排行星齒輪動力耦合機構為主要構件的機電無級傳動系統(tǒng)為研究對象，綜合運用理論推導分析、建模仿真研究及臺架試驗驗證等手段對其傳動特性、燃油經(jīng)濟性和模式切換平順性等方面進行系統(tǒng)的研究，主要工作包括： （1）對機電無級傳動系統(tǒng)的結構機理進行詳細的分析，利用模擬杠桿法建立系統(tǒng)的轉速轉矩傳動特性，根據(jù)設計初衷、分析其工作模式及能量傳遞路徑； （2）引入混雜系統(tǒng)理論來描述兼有連續(xù)變量動態(tài)系統(tǒng)和離散變量動態(tài)系統(tǒng)的機電無級傳動系統(tǒng)，利用Matlab/Simulink/Stateflow仿真平臺，建立其基于混雜系統(tǒng)理論的轉矩控制策略，建立駕駛員模型、車輛動力學模型、動力源、蓄電池、雙排行星齒輪動力耦合機構等關鍵零部件模型，并以UDDS、NEDC和1015循環(huán)工況為例，進行能量管理仿真分析，研究基于混雜系統(tǒng)理論的轉矩控制策略，研究機電無級傳動系統(tǒng)整車油經(jīng)濟性； （3）針對動力傳遞平穩(wěn)的需要，分析機電無級傳動系統(tǒng)不同動力源的動態(tài)響應特性，以降低機電無級傳動系統(tǒng)在模式切換過程中由于發(fā)動機和雙轉子電機不同動態(tài)響應特性引起的沖擊度為目標，利用發(fā)動機試驗數(shù)據(jù)，建立發(fā)動機轉矩估計的BP神經(jīng)網(wǎng)絡模型�；诳焖倌M杠桿法，建立雙排行星齒輪機構動態(tài)特性模型，，基于臺架試驗特性，建立雙轉子電機和制動器傳遞函數(shù)動態(tài)特性模型，根據(jù)系統(tǒng)結構特性、提出“轉矩分配+發(fā)動機轉矩估計+電動機轉矩補償+補償系數(shù)修正”的動態(tài)協(xié)調控制策略，并分別以由純電動模式切換到混合驅動模式H2的定工況和全工況為例進行仿真； （4）基于模塊化設計思想，搭建機電無級傳動系統(tǒng)總成試驗臺架，詳細闡述該總成試驗臺架的基本原理，并在前述理論的指導下，測量雙轉子電機的基本電氣性能，驗證機電無級傳動系統(tǒng)的工作模式并測試機電無級傳動系統(tǒng)在不同能量傳遞路徑的效率。
[Abstract]:Electromechanical stepless drive hybrid drive system (mechatronic stepless drive system, hereinafter referred to as mechatronic stepless drive system) takes account of both mechanical and electrical ports and requires no clutch and additional starting motor for energy conversion, coupling and separation,It has the ability to realize stepless variable speed transmission in a wide range of speed ratio, so that the engine can run on the best fuel economy line under variable load, which can reduce fuel consumption and improve efficiency.Optimization of engine performance and other aspects have great advantages and become the focus of research.In this paper, the electromechanical stepless transmission system with independent intellectual property rights, which is based on the coupling mechanism of dual rotor motor and double-row planetary gear, is taken as the research object, and the theoretical derivation and analysis are used synthetically.Modeling, simulation, bench test and other means to study its transmission characteristics, fuel economy and mode switching ride, the main work includes:1) the structure mechanism of electromechanical stepless transmission system is analyzed in detail. The rotational speed and torque transmission characteristics of the system are established by using the simulation lever method. According to the original intention of the design, the working mode and the energy transfer path of the system are analyzed.The hybrid system theory is introduced to describe the electromechanical stepless transmission system with continuous variable dynamic system and discrete variable dynamic system. The torque control strategy based on hybrid system theory is established by using Matlab/Simulink/Stateflow simulation platform, and the driver model is established.Vehicle dynamics model, power source, battery, double row planetary gear power coupling mechanism and other key parts model, and taking Uddes NEDC and 1015 cycle conditions as examples, the energy management simulation analysis is carried out.The torque control strategy based on hybrid system theory and the fuel economy of electromechanical stepless drive system are studied.In order to meet the need of steady power transmission, the dynamic response characteristics of different power sources of electromechanical stepless transmission system are analyzed.In order to reduce the impact caused by different dynamic response characteristics of engine and double-rotor motor in mode switching process of electromechanical stepless transmission system, a BP neural network model for engine torque estimation is established by using engine test data.Based on the fast simulation lever method, the dynamic characteristic model of double row planetary gear mechanism is established, and the dynamic characteristic model of transfer function of double rotor motor and brake is established based on bench test characteristics.The dynamic coordinated control strategy of torque estimation motor compensation compensation coefficient correction for torque distribution engine is put forward, and the simulation results of H _ 2 mode and H _ 2 from pure electric mode to hybrid drive mode are given respectively.Based on the modular design idea, the test stand of electromechanical stepless transmission system is built, and the basic principle of the test stand is expounded in detail, and the basic electrical performance of the double rotor motor is measured under the guidance of the above theory.The working mode of the electromechanical stepless transmission system is verified and the efficiency of the electromechanical stepless transmission system in different energy transfer paths is tested.
【學位授予單位】：華南理工大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U463.2;U467

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