雙閉環直流調速系統設計

電子機電論文編號:JD059    字數:21045.頁數:49

摘要................................................................ III
ABSTRACT .............................................................III
第一章 緒論 ...........................................- 1 -
1.1研究背景和意義 .........................................- 1 -
1.2國內外研究現狀和應用前景 .......................................- 1 -
1.3主要研究內容和主要技術指標 ......................................- 1 -
第二章 控制原理與方案確定.......................................... - 3 -
2.1直流調速系統的基本概念.......................................... - 3 -
2.2轉速、電流雙閉環調速系統........................................ - 4 -
2.2.1雙閉環調速系統的組成 ..........................................- 4 -
2.2.2雙閉環調速系統的工作原理..................................... - 5 -
2.3 控制方案的確定 ................................................- 7 -
2.3.1連續控制與數字控制的特點 ......................................- 7 -
2.3.2數字控制的雙閉環直流調速系統............................. - 8 -
第三章 控制算法設計.............................................. - 9 -
3.1數字PID控制算法 .............................................- 9 -
3.1.1PID算法的數字實現 .............................................- 9
3.1.2數字PID控制算法的改進....................................... - 11 -
3.2 模糊控制算法 ..................................................- 12 -
3.2.1模糊控制的基本原理 ...........................................- 13 -
3.2.2模糊控制器介紹 ...............................................- 13 -
3.2.3模糊控制器設計 ...............................................- 15 -
第四章 硬件設計 ..................................................- 21 -
4.1控制系統的組成................................................. - 21 -
4.2主電路設計 ....................................................- 21 -
4.2.1整流輸入電壓選擇 .............................................- 21 -
4.2.2 晶閘管保護環節.............................................. - 21 -
4.3 TMS320LF2407 DSP 簡介 ........................................- 21 -
4.3.1TMS320LF2407A DSP的特點及引腳功能............................. - 22 -
4.3.2TMS320LF2407DSP的組成及結構 ..................................- 23
4.4數字觸發器 ............................................. 23 -
4.4.1同步電路............................................. - 23 -
4.4.2定時控制移相角α .............................................- 25 -
4.5給定電路 .................................................- 26 -
4.6反饋電路...................................................... - 27 -
4.6.1速度反饋取樣信號.............................................. - 27 -
4.6.2電流反饋 .....................................................- 28 -
4.7保護電路 ......................................................- 29 -
4.8脈沖功率放大電路 ................................................-30 -
第五章 軟件設計 ...................................................- 31 -
5.1系統的軟件結構................................................. - 31 -
5.2主程序 .........................................................- 31 -
5.3中斷程序 .......................................... ............- 32 -
5.4電流環程序 .....................................................- 33 -
5.5速度環程序 ......................................... ...........- 34 -
第六章 系統整體分析 ................................... ............- 36 -
6.1系統組成 .......................................................- 36 -
6.1.1主電路分析 ...................................................- 37 -
6.1.2控制電路分析................................................. - 37 -
6.2系統參數設計分析................................................ - 38 -
6.2.1調節器參數................................................... - 38 -
6.2.2其他參數 ..................................................... 38 -
6.3動態性能分析 ..................................................- 39 -
結 論............................................................ - 41 -
參考文獻 .........................................................- 42 -
致 謝 ............................................................- 43 -

摘 要

本文對基于DSP的雙閉環直流調速系統進行了研究，并設計出應用于直流電動機的雙閉環直流調速系統。在參考相關資料基礎上，結合控制理論的相關知識以及直流調速系統的新型算法，轉速環采用模糊控制算法，電流環采用數字PI算法。在本系統的具體硬件實現上，采用了目前比較流行的數字信號處理器(DSP)作為系統的控制器，；軟件設計中，進行電流環和速度環中控制量的計算以及相位角度的計算，產生脈沖觸發信號。

關鍵詞：DSP，模糊控制，直流調速。

ABSTRACT

DC motor has excellent character on speed regulation, such as smooth timing in a wide range, simple method. Meanwhile as its capability on overload, enduring frequent impacting load, it is widely used in area of high performance electric drive such as cutting machine tool, paper machine, etc

This paper researches DC-drive speed system with a dual-converter and dual-closed-loop based DSP, discussing a new control method that combines DSP with D C-drive, designs applies in direct current motor's double closed loop current velocity modulation system. The union control theory's related knowledge as well as the direct-current velocity modulation system's new algorithm, the rotational speed link uses the fuzzy control algorithm, the electric current link uses the digital PI algorithm. Used digital signal processor (DSP) to take system's controller, its processing speed was high, happen to tallied this realizes timeliness to request the high characteristic; in the design of software , calculate the current loop and speed ,and generate trigger signal pulse.

Key work: DSP; fuzzy control; DC speed regulation