電控懸架論文電控懸架的硬件在環(huán)仿真研究

1、電控懸架論文：電控懸架的硬件在環(huán)仿真研究【中文摘要】電控懸架核心部分就是ECU,即電控控制單元。以往對于ECU的開發(fā)采用串行開發(fā)模式,這種模式開發(fā)周期較長。現代電子產品更新速度愈來愈快,串行模式難以滿足開發(fā)要求,因而V模式開發(fā)流程應運而生。硬件在環(huán)仿真(HIL)是一種硬件在線實時技術,它把實物通過計算機I/O接口與軟件結合,并要求系統(tǒng)的軟、硬件實時運行,能夠真實的模擬實物實際的運行狀況,既具有純數字仿真的高效性,又具有實物實驗的準確性,是V模式開發(fā)流程的關鍵技術。因此,對硬件在環(huán)仿真技術的研究具有重要現實意義。本文將某型轎車的電控空氣半主動懸架系統(tǒng)作為研究對象,在對汽車及懸架系統(tǒng)性能分析的基礎

2、上,在MATLAB/Simulink里建立了四分之一車懸架模型。通過試驗的方法獲取了減振器阻尼系數和空氣彈簧的剛度,并將該電控懸架進行了臺架試驗,經過對試驗數據的處理和分析,試驗的結果表明通過試驗所得到的減振器阻尼系數和空氣彈簧的剛度值是理想的?；赩模式開發(fā)理念：首先,對電控懸架進行了功能設計和離線仿真,針對某型轎車的電控空氣半主動懸架系統(tǒng),設計適合于該電控懸架的模糊邏輯控制器,分別以隨機位移信號、階躍信號和正弦位移信號作為激勵,進行了離線仿真,得到了被動懸架和電控半主動懸架的車身加速度對比曲線,結果表明電控半主動懸架系統(tǒng)比被動懸架具有更好的減振性能,同時也說明了本文所設計的模糊控制策略是可

3、行的,改善了乘坐舒適性。其次,為了進一步驗證控制器的效果,利用西南交通大學汽車工程研究所和成都歐內斯特科技有限公司聯合開發(fā)的電控半主動懸架試驗平臺,在該平臺基礎上,在宿主機中利用MATLAB/Simulink軟件搭建了汽車電控懸架硬件在環(huán)仿真模型,然后把實物嵌入到閉環(huán)系統(tǒng)中。通過雙機仿真模式,利用MATLAB實時工具xPC Target,將在宿主機中建立的硬件在環(huán)仿真模型經編譯后下載到目標機中,以目標機來替代實際的電子控制單元(ECU)控制電控半主動懸架,實現電控懸架的硬件在環(huán)實時仿真。結果表明,本文所設計的模糊控制器具有一定的效果?！居⑽恼縏he ECU is the core part

4、 of Electronically controlled suspension, the Electronic Control Unit. In the past for the development of ECU serial development model, with a longer development cycle. The speed of modern electronic product updates more quickly, the serial model can not meet the development requirements, and then V

5、 model development process came into being. Hardware in Loop Simulation (HIL) is a hardware-line real-time technology, It is the kind of computer I/O interfaces and software integration, and require the system software and hardware running in real time, to simulate the real operating conditions in t

6、he actual physical. Both a computer simulation of the efficiency, but also has real experimental accuracy, V model is the key technology development process. Therefore, the hardware in the loop simulation study has important practical significance.This car will be a certain type of semi-active elect

7、ronically controlled air suspension system as the research object, In the automotive and suspension system performance analysis, based on the MATLAB/Simulink in the establishment of a quarter car suspension model. Test method to get through the shock absorber damping and stiffness of air springs and

8、 electronically controlled suspension of the bench test conducted after the test data processing and analysis, test results show that the damping obtained by experiment Control damping and air spring stiffness is correct.V model development based on the concept:Firstly, electronically controlled sus

9、pension by the functional design and offline simulation. For a particular cars electronic control semi-active air suspension system, designed for electronically controlled suspension of the fuzzy logic controller. Random displacement of each signal, the displacement step signal and sine signal as an

10、 incentive to carry out the off-line simulation, the passive suspension and electronically controlled semi-active suspension, body acceleration contrast curve. The results show that semi-active suspension system, electronically controlled suspension is better than passive damping performance, but al

11、so to illustrate that the fuzzy control strategy is feasible, can significantly improve the ride comfort. Secondly, in order to further verify the effect of the controller, the use of Southwest Jiaotong University Automotive Engineering Research Institute and Chengdu, anyest technic CO.Ltd.co-develo

12、ped semi-active suspension electronic control test platform, based on the platform, a host computer using MATLAB/Simulink software to build a vehicle electronic control suspension hardware in the loop simulation model, and then embedded into the closed-loop system in the physical. Two-machine simula

13、tion model by using real-time tool MATLAB xPC Target, will host the hardware in the loop simulation model established by the compiled downloaded to the target machine to target machine instead of the actual electronic control unit (ECU) controlled electronically controlled semi-Active suspension, el

14、ectronically controlled suspension to achieve hardware in the loop simulation, results show that the fuzzy controller has a certain effect.【關鍵詞】電控懸架 V模式 硬件在環(huán)仿真 模糊控制 xPC Target【英文關鍵詞】Electronically controlled semi-active suspension V model HIL Fuzzy control xPC Target【目錄】電控懸架的硬件在環(huán)仿真研究摘要6-7Abstract7-8

15、第1章 緒論12-211.1 電控懸架控制方法及其研究現狀12-151.2 硬件在環(huán)仿真技術15-171.2.1 V模式的開發(fā)方法15-171.2.2 硬件在環(huán)仿真技術開發(fā)方法171.3 汽車電子硬件在環(huán)仿真技術國內外現狀分析17-191.4 本文主要研究內容19-21第2章 汽車懸架模型的建立及驗證21-312.1 電控懸架的類型212.2 電控懸架的功能21-222.2.1 減振力和彈簧剛度的控制21-222.2.2 車身高度的控制222.3 電控懸架的結構與工作原理22-252.3.1 電控懸架的組成22-232.3.2 電控懸架的工作原理23-252.4 路面譜模型的建立25-262.

16、5 汽車被動懸架和半主動懸架動力學模型26-282.5.1 兩自由度的單輪車輛動力學模型26-272.5.2 二自由度被動懸架Simu¨nk模型的建立27-282.6 四分之一車懸架模型的驗證28-292.6.1 試驗目的282.6.2 試驗步驟282.6.3 試驗參數282.6.4 試驗與仿真結果的對比28-292.7 本章小結29-31第3章 電控懸架系統(tǒng)特性試驗及分析31-433.1 電控懸架特性試驗31-323.1.1 試驗目的313.1.2 試驗系統(tǒng)31-323.1.3 試驗條件323.1.4 試驗方案323.2 試驗數據處理32-373.2.1 可調減振器阻尼32-363.2.2 空氣彈簧剛度36-373.3 減振器阻尼與步進電機轉角間的關系37-383.4 驗證電控懸架的參數38-423.4.1 試驗目的383.4.2 試驗方案383.4.3 數據處理38-423.5 本章小結42-43第4章 電控懸架系統(tǒng)的功能設計及離線仿真43-544.1 模糊理論概述43-444.2 模糊控制器的設計44-474.2.1 模糊控制器的組成444.2.2 輸入輸出變量的模糊化44-464.2.3 確定模糊控制規(guī)則46-474.3 二自由度半主動