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基于嵌入式系統(tǒng)的汽車溫度精確控制研究

發(fā)布時間:2018-03-04 07:29

  本文選題:客車空調(diào) 切入點:模糊PID控制 出處:《河北科技大學(xué)》2016年碩士論文 論文類型:學(xué)位論文


【摘要】:隨著科學(xué)技術(shù)的進步,客車空調(diào)溫度控制技術(shù)飛速發(fā)展,傳統(tǒng)的溫度控制技術(shù)難以滿足人們對客車空調(diào)溫度舒適性與穩(wěn)定性的新要求,由于客車內(nèi)部與外部環(huán)境難以做到絕對隔離,外部環(huán)境對于車內(nèi)溫度的影響因素一直存在,如何時刻根據(jù)車內(nèi)溫度的變化進行實時的調(diào)整,已成為影響客車空調(diào)系統(tǒng)控制性能的關(guān)鍵性因素。本論文針對客車空調(diào)采暖系統(tǒng)進行優(yōu)化控制,首先介紹了客車空調(diào)采暖系統(tǒng)的組成,運用Matlab軟件建模仿真比較結(jié)果的方式確立了運用模糊規(guī)則實時在線調(diào)整PID參數(shù)的智能控制算法,并將模糊PID控制表放到內(nèi)存中,只需進行查表操作即可完成對溫度數(shù)據(jù)的處理工作,大大節(jié)省了系統(tǒng)運行的時間,體現(xiàn)了實時性控制的特點。客車空調(diào)采暖系統(tǒng)采用主從結(jié)構(gòu)布局,上下分工明確,下位機主要負(fù)責(zé)溫度采集與電機控制工作,上位機主要負(fù)責(zé)算法控制以及溫度顯示工作,上位機與下位機通過CAN總線進行實時的數(shù)據(jù)交互,本論文有效地將μC/OS-Ⅱ移植到上位機中,應(yīng)用程序以任務(wù)的形式運行在操作系統(tǒng)之上,系統(tǒng)根據(jù)任務(wù)的優(yōu)先級進行任務(wù)的調(diào)度與管理工作,彼此之間互不影響,大大提高了系統(tǒng)的運算能力。本文成功地將模糊PID控制算法、嵌入式操作系統(tǒng),CAN總線技術(shù)運用于客車空調(diào)采暖系統(tǒng)的優(yōu)化控制當(dāng)中,提高了溫度控制精度,加速了客車空調(diào)溫度控制智能化的進程。
[Abstract]:With the progress of science and technology, the temperature control technology of passenger car air conditioning is developing rapidly. The traditional temperature control technology can not meet the new requirements of the passenger car air conditioning temperature comfort and stability. Because the internal and external environment of the bus is difficult to achieve absolute isolation, the influence factors of the external environment on the internal temperature of the vehicle exist all the time, so how to adjust it in real time according to the change of the temperature inside the vehicle, It has become a key factor to affect the control performance of passenger car air-conditioning system. This paper focuses on the optimization control of bus air-conditioning heating system. Firstly, the composition of bus air-conditioning heating system is introduced. An intelligent control algorithm is established to adjust the parameters of PID by using fuzzy rules in real time, and the fuzzy PID control table is put into memory by the way of modeling and comparing the results of simulation with Matlab software. The processing of temperature data can be completed only by table checking operation, which greatly saves the running time of the system and embodies the characteristics of real-time control. The heating system of passenger car air conditioning adopts the master and slave structure layout, and the division of labor between the upper and lower parts is clear. The lower computer is mainly responsible for temperature collection and motor control, and the upper computer is mainly responsible for the algorithm control and temperature display. The upper computer and the lower computer interact with each other through the CAN bus in real time. In this paper, 渭 C / OS- 鈪,

本文編號:1564729

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