51 51匯編指令表
上傳時間: 2013-10-16
上傳用戶:micheal158235
小弟簡單的做了一個數碼表(匯編寫的),望大神們指點一二
上傳時間: 2013-10-17
上傳用戶:waixingren
STM32L151xx數據表
上傳時間: 2013-10-26
上傳用戶:swing
當執行機構需要的不是控制量的絕對值,而是控制量的增量(例如去驅動 步進電動機)時,需要用PID的“增量算法”。 增量式PID控制算法可以通過(2-4)式推導出。由(2-4)可以得到控制器 的第k-1個采樣時刻的輸出值為:
上傳時間: 2013-10-11
上傳用戶:waizhang
首先研究CAN總線和SAE J1939協議,提出一種基于MC9S12HZ256微控制器的總線式汽車數字儀表解決方案。詳細介紹SAE J1939協議的報文幀格式及應用層協議中發動機相關參數的定義,以及步進電機及其驅動和車速信號的處理方法。該數字儀表系統硬件平臺由微處理器和信號采集和信息處理及顯示等模塊組成。軟件設計部分編程實現了對CAN總線和各傳感器數據的讀取、處理。該系統能夠實時反映車輛工況。 Abstract: In this paper,CAN bus and SAE J1939protocol are researched,and a vehicle digital instrument solution based on MC9S12HZ256MCU is proposed.The message frame format and some engine-related parameters’definition in SAE J1939application layer protocol are introduced in detail.Stepper motor and its driver,the methods of speed signal process-ing are also introduced.The hardware platform of vehicle digital instrument is composed by MCU,signal acquisition mod-ule,and signal processing and displaying module.Data receiving and processing from CAN bus and sensors are accom-plished by programming,and vehicle condition can be reflected in real-time.
上傳時間: 2013-10-20
上傳用戶:huannan88
摘要:本文介紹應用PIC16C57單片機設計的一種可編程、高性能的數碼式樓宇對講系統,詳細闡明了有關工作原理和關鍵技術。本系統充分應用PIC單片機的軟硬件資源,具有可編程、電路簡單、功能強大等優點,在安居工程、樓宇技防系統等領域具有廣泛的應用前景。 關鍵詞:PIC 單片機 樓宇對講 編碼 譯碼 可編程
上傳時間: 2013-11-14
上傳用戶:hj_18
摘要:本文介紹了一種基于單片機和測量電壓真有效值方案設計的智能數字交流毫伏表。它能精確測量任意波形的低頻模擬周期信號并同時顯示其有效值和分貝值。具有智能量程轉換功能。 關鍵詞:單片機 數字毫伏表 真有效值 智能量程轉換
上傳時間: 2013-11-09
上傳用戶:gaoqinwu
針對材料試驗機等設備中要求測量或控制材料拉伸或壓縮的位移,一般采用光電軸角編碼器檢測位置信號,輸出正交編碼脈沖信號。若采用其他方法檢測位置信號,必然導致電路設計復雜,可靠性降低。因此,提出一種基于LS7266R1的電子式萬能材料試驗機設計方案。給出了試驗機中的控制器工作原理,LS7266R1與單片機的接口硬件設計,以及主程序軟件流程圖。巧妙地把力量傳感器,位移傳感器等機械運動狀態的壓力或拉力以及位置坐標,變成了電壓信號和電脈沖數字信號,供A/D測量和LS7266R1計數,從而實現了獨立完成材料試驗控制或通過PC機串口命令完成材料試驗控制。 Abstract: Aiming at the requirement that the displacement of the tension and compression always be tested and controlled in the equipement such as material testing machine. The position signal was tested by photoelectric axial angle coder. Therefore, the paper proposes the design of electronic universal testing machine design based on LS7266R1. If the position signal detected by other methods, will inevitably lead to the circuit design complexity, reliability decreased. The work theory of the controller, the hardware interface design between LS7266R1 and single chip, and the flow chart of main program, are presented in this paper. The signal of the compression or tension power and displacement at working, which tested by power sensor and displacement sensor especially, is changed into electric voltage and electric pulse numerical signals. And these signals can be tested by A/D and counted by LS7266R1. Finally the test of the material properties can be controlled by itself, or controlled by the COM command of PC.
上傳時間: 2013-11-02
上傳用戶:yl1140vista
以FPGA為數字邏輯平臺,借助繼電器矩陣和多路模擬開關,以ADS1211為核心,在單片機控制下,聯合實現手持式虛擬/智能存儲示波表中數字多用表功能,實驗表明該設計是行之有效的。文中介紹了數字多用表的系統結構,重點討論了其測量電路和智能控制方案。 Abstract: The digital multimeter in virtual/intellect digital-oscillorgaph was fulfilled, which was controlled by singlechip computer by relay matrix and analogue switches,in which FPGA was used for digital logical plot-form, ADS1211 for kernel chip, the experiment showed the design was feasible, the system struction was present-ed in the paper, measure circuit and intellect control plan of digital multimeter were mainly given.
上傳時間: 2013-11-02
上傳用戶:瓦力瓦力hong
設計實現了一種基于MSP430系列超低功耗單片機的新型高精度自控式骨矯形器,介紹了系統的總體設計及硬件軟件設計。試驗表明,該骨矯形器可實現自控內固定、牽張、回縮及加壓固定功能,且功耗低、操控簡單、控制精度高、安全可靠。
上傳時間: 2013-10-16
上傳用戶:1427796291