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Simulation

模擬(mónǐ),是對真實事物或者過程的虛擬。模擬要表現出選定的物理系統或抽象系統的關鍵特性。模擬的關鍵問題包括有效信息的獲取、關鍵特性和表現的選定、近似簡化和假設的應用,以及模擬的重現度和有效性。可以認為仿真是一種重現系統外在表現的特殊的模擬。
  • 基于Proteus的單片機模數轉換電路的設計與仿真

    以單片機控制A/D轉換器TLC549為例,對A/D轉換器的主要技術指標進行了分析研究,在Proteus平臺下,完成了A/D轉換電路的構建,采用器件工作時序方式進行程序編寫,借助仿真圖表、虛擬儀器等工具對A/D轉換的數據進行測量并對失調誤差、增益誤差、微分非線性、積分非線性和轉換時間等重要參數進行了詳細分析。結果表明:使用Proteus軟件可對A/D轉換過程進行定性分析,將抽象的A/D轉換器技術指標直觀化、形象化展現出來,有助于學生更好地理解A/D轉換過程。The main technical indicators of A/D converter were analyzed and studied with an example from A/D converter TLC2543 which is controlled by using SCM.It was completed the construction of the A/D converter circuit under the Proteus software.The programming based on the operation sequence of the chip is put forward.With the aid of the Simulation tools such as virtual instrument,Simulation charts provided by Proteus,the important parameters of circuit such as offset error,gain error,differential nonlinearity(DNL),integral nonlinearity (INL) and conversion time are analyzed detailedly.Simulation results show that the A/D conversion process can be qualitatively analyzed and visualized the abstract indicators of A/D.The system can help students better to understand the SCM conversion process.

    標簽: proteus 單片機 模數轉換

    上傳時間: 2022-04-04

    上傳用戶:

  • 基于數字電路的八路搶答器的設計與實現

    搶答器是一種智力競賽常用的器件,搶答器的設計方法千差萬別,文章利用常用的數字電子器件,設計了八路搶答器電路的設計、仿真及實現的全過程,提出兩種可行的設計方案:方案1采用74ls373實現電路鎖存,74ls148實現電路編碼,74ls74及數碼管實現電路顯示;方案二采用CD4511BCN和LMC555CM集成電路及數碼管實現搶答器的控制和顯示。本文設計用的器件簡單,容易理解,適用于初學電子技術的人員。Answer scrambler is a common device in intelligence competition, and its design methods vary greatly. This paper designs the whole process of design, Simulation and Realization of the circuit of eight-way answer scrambler by using common digital electronic devices, and puts forward two feasible design schemes: scheme 1 uses 74 ls373 to realize circuit latching, 74 ls148 to realize circuit coding,74 ls74 and digital tube to realize circuit. The second scheme uses CD4511 BCN, LMC555 CM integrated circuit and digital tube to control and display the answerer. The device designed in this paper is simple and easy to understand, and it is suitable for the beginners of electronic technology.

    標簽: 搶答器

    上傳時間: 2022-04-05

    上傳用戶:

  • 基于Multisim和LabVIEW的虛實結合數字電路實驗教學

    實驗教學一直是工科教學中不可或缺的組成部分,對培養學生的動手能力,獨立思考能力,創新思維與發散思維具有重要的作用。針對目前電路教學實驗中電路仿真實驗與實物電路實驗各自獨立,無法統一問題,提出將仿真電路實驗與實物電路實驗有機的結合同步操作,并使用Web發布實現遠程實驗操作。采用Multisim作為電路實驗仿真平臺,NI Eiviss II作為實物電路實驗硬件平臺,運用LabVIEW整合Multisim電路仿真實驗與實物電路實驗,實現仿真與實物實驗有機結合,兩種實驗可同步進行。學生在仿真實驗中先可探索實驗,然后做實物實驗。同時運用LabVIEW開發出實驗過程人機交互操作接口界面,使用過程中效果良好。Experimental teaching has always been an indispensable part of engineering education.And it always plays an important role in cultivating students'practical ability,independent thinking ability,innovative thinking and divergent thinking.But Simulation experiment and physical experiment cannot be unified in the circuit teaching experiment at present.In order to solve this problem,this paper proposes to combine organically the Simulation circuit experiment with physical circuit experiment,and synchronously operate them.This paper uses the WEB publishing to achieve remote experimental operation.Multisim is used as the circuit Simulation platform,and NI Eiviss II is used as the physical circuit hardware platform.Multisim circuit Simulation experiment and physical circuit experiment are implemented by LabVIEW to realize the combination of Simulation experiment and physical experiment.Students do explore experiments in Simulation experiment firstly,and then do physical experiment.And this paper uses LabVIEW to develop the experimental man-machine interface.

    標簽: multisim labview

    上傳時間: 2022-04-05

    上傳用戶:

  • 高精度雙向DC電源電流采樣電路設計

    為適應雙向DC/DC功率變換的電流采樣需求,一種高精度高邊電流采樣電路被提出。其基本思想是在功率電路的高邊串入采樣電阻,借助電流鏡原理并引入偏置電流電路,將雙向電流均轉換為正向電壓輸出。通過理論分析與仿真結合的方法對電流鏡采樣原理及4種不同的偏置電流電路方案進行對比,最后通過實驗數據驗證了高精度高邊電流采樣電路的有效性。實驗數據表明,該采樣電路可在-25~75℃的溫度工作范圍內,針對-10~+10 A范圍內的電流采樣實現優于5%的采樣精度。Current sensing plays an important role in controlling,monitoring or protection functions of power systems.To meet the current sensing requirement of bidirectional DC/DC converters,a high-accuracy bidirectional current sensing circuit is proposed.The proposed current sensing circuit inserts a resistor in the path of the current to be sensed,while the current mirror and biased current circuit are introduced.Therefore,the bidirectional current can be expressed by positive voltage.By theoretical analysis and Simulation,the sampling theory is analyzed and four biased current circuits are compared.At last,experimental results verified the proposed method.It is demonstrated that the proposed current sensing circuit can achi...

    標簽: 雙向DC電源 電流采樣

    上傳時間: 2022-04-22

    上傳用戶:

  • 基于LM339電壓比較器的交流過零檢測電路設計

    針對交流電路過零檢測電路存在結構復雜、過零點檢測不準確、編程繁瑣等問題,設計了一種基于LM339的硬件結構簡單的過零檢測電路。通過仿真軟件Mulisim對該設計電路進行了仿真,實驗證明了該方案過零檢測的可行性、穩定性和可靠性,可直接作為交流電路中CPU的過零信號。Aiming at the problems of AC cilsuit zero crossing detection circuit such as complex structure, zero crossing detection and cumbersome programming, a zero crossing detection circuit with simple hardware structure based on LM339 was designed. The design circuit was simulated by Simulation software Mulisim, and the feasibility, stability and reliability of zero crossing detection were proved by experiments, which can be used as zero crossing signal of CPU in AC circuit directly.

    標簽: lm339 電壓比較器

    上傳時間: 2022-05-03

    上傳用戶:

  • 基于PSIM仿真的開關電源Boost電路的設計

    基于PSIM仿真軟件,分析了Boost電路拓撲結構,設定了參數要求進行電路仿真設計,通過電路仿真軟件PSIM對Boost電路工作在CCM模式下,合理設置占空比參數。實驗結果表明理論分析與仿真的一致性和參數設計的正確性,輸出電壓和電流參數穩定,Boost電路輸出效率高。This design is based on PSIM Simulation software,analyzes the topology of Boost circuit,sets the parameter re- quirements for circuit Simulation design,and reasonably sets the duty cycle parameters for Boost circuit working in CCM mode through PSIM Simulation software.The experimental results show that the theoretical analysis and Simulation are consis- tent and the parameter design is correct,the output voltage and current parameters are stable.

    標簽: psim 開關電源 boost

    上傳時間: 2022-05-04

    上傳用戶:

  • 基于STM32的無刷直流電機控制器硬件電路設計及實驗研究

    以STM32F103C8T6為核心,設計了無刷直流電機控制器硬件電路。電路主要包括IR2310構成的PWM驅動電路、IRF3808構成的逆變電路、增量式旋轉編碼構成的速度反饋電路。控制器具有CAN和RS232通信接口,可與計算機或PLC構成速度或位置伺服系統。利用由xPC目標搭建的半實物仿真平臺對PI參數進行整定。測試了控制器的速度伺服響應性能,給定速度為2400rpm時,控制器響應時間為0.32s。實驗結果表明,系統工作可靠,穩定性好,響應速度快,可以滿足上肢康復機器人的機械臂速度控制性能要求。The hardware circuit of Brushless DC motor controller is designed by taking STM32F103C8T6 as the core,which mainly includes PWM driving circuits made up of IR2310,inverter circuit formed by IRF3808,speed feedback circuit composed of incremental rotary encoder and so on.Speed servo control system or position servo control system can be composed of BLDM controller with computer or PLC through CAN communication interface or RS232 serial communication interface.By using the hardware in the loop Simulation platform built by xPC target,the PI parameters are set up.The Speed servo response performance of the controller is tested.When the speed is 2 400 rpm,the response time of the controller is 0...

    標簽: stm32 無刷直流電機

    上傳時間: 2022-05-07

    上傳用戶:

  • 血氧儀核心硬件電路設計及Multisim仿真

    為了實時檢測血氧量,能使缺氧特別敏感的腦組織或心臟類疾病患者得到及時治療,采用近紅外雙波長透射式光電脈搏血氧測定法,以H橋電路對發射光源進行控制及通用運算放大器搭建濾波電路。運用參數理論計算和計算機仿真結果相對比的方法,通過Mu ltisim軟件對所設計電路進行仿真,仿真結果與理論參數計算相吻合,證明了電路參數設計的可行性,為血氧儀的實物制作提供參考。For real-time detection of oxygen saturation for timely treatment of the brain or heart,which are very sensitive to oxygen inadequacy,the near-infrared wavelengths double photoelectric pulse oximeter transmission method is adopted.The illuminant is controlled with the H bridge circuit and the filter circuit is built with general op-amps.Parameters by theoretical calculation is compared with the computer Simulation results in Multisim and satisfactory results are obtained.It is shown that the design of the circuit parameters is feasible and can be a help in making the physical blood-oxygen monitor.

    標簽: multisim 光電二極管 濾波器

    上傳時間: 2022-05-12

    上傳用戶:

  • 51單片機TLC2543電壓表相關資料

    說明:  基于51單片機的數字直流電壓表相關材料,內容有原理圖,仿真文件,論文材料,程序源碼等。(The related materials of digital DC voltmeter based on 51 single chip computer include schematic Simulation files, paper materials, program source code, etc.)

    標簽: 51單片機 tlc2543 電壓表

    上傳時間: 2022-05-16

    上傳用戶:fliang

  • 89C52單片機數控直流穩壓電源的Proteus仿真

    說明:  89C52單片機數控直流穩壓電源的Proteus仿真+Keil C源碼(SCM Simulation+ NC DC power supply source)

    標簽: 89c52 單片機 數控直流電源

    上傳時間: 2022-05-16

    上傳用戶:xsr1983

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