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基于dds和單片機(jī)數(shù)字控制信號(hào)發(fā)生器的設(shè)計(jì)外文翻譯、中英對(duì)照、英漢互譯(更新版)

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【正文】 G., “Suspended Sediment and Dye Concentration easurements Using a Digital Techniques”, Int. J. Electronics, 87, , pp 107, (2020). [2] Webster J. G. Ed., “Tactile Sensors for Robotics and Medicine”, Wiley, New York, (1988). [3] Dally J. W., Rilley W. F., Mcconnel ., “Instrumentation for Engineering Measurements”, Wiley, New York, (1993). [4] Tarchanidis K. N., Ioannidis I. N., Kakkalis I. K. And Lygouras J. N.“FLEXIMAT, an ntegrated System Scanning the Bending of Any Matress.”, Int. Workshop on Virtual and Intelligent Measurement Systems, VIMS 2020, Annapolis, MD, USA, 2930 April 2020, pp 115,(2020). [5] Koukourlis C. S., Voulgaris N. C., “A Digital Method for Sinewave Generation.” Archiv fur Electrotechnik, 72, pp 327, (1989). [6] Koukourlis Chr. S, Trigonidis V. K., Sahalos J. N., “Differential Synchronous Demodulation for Small Signal Amplitude Estimation.”, IEEE Instrumentation and Measurement, 42, No. 5, pp926, (1993). 。 數(shù)控改革信號(hào)源的優(yōu)勢 設(shè)計(jì)的數(shù)值的控制信號(hào)源被施加到車床改革實(shí)驗(yàn)。 圖 6 示波器出口實(shí)驗(yàn)圖片( a) 1 千赫茲的輸出波形( b) 1 兆赫茲的輸出波形( c) 20兆赫茲的輸出波形 用示波器測試,表明該電路工作穩(wěn)定,正確。 WCLK上升沿重復(fù) 5次后,在 WCLK上升沿將不再工作,直到復(fù)位信號(hào)或地址指針復(fù)位到第一個(gè)輸入寄存器的 FQUD上升沿。 圖 5 系統(tǒng)程序流程圖 植入的 uC/ GUI 數(shù)控信號(hào)源已足夠多的使用的 uC / GUI軟件建立許多窗口和控制按鈕。該系統(tǒng)輸出的 3個(gè) PWM信號(hào),它分別控制 AD9850的輸出范圍,占空比和輸出 DAC0832 的范圍。 圖 1 系統(tǒng)設(shè)計(jì)框圖 硬件設(shè)計(jì) AD9850的模塊 AD9850包含 DDS系統(tǒng)和高速比較器。 2 pi積累階段,使用 ROM來存儲(chǔ)相應(yīng)的相位幅度的一般正弦函數(shù)形式。 TC 外部參考時(shí)鐘周期,單位:秒 。實(shí)驗(yàn)和應(yīng)用測試表明,數(shù)控信號(hào)源所組成的 STM32微控制器和 DDS芯片可以很好地工作。該系統(tǒng)的優(yōu)點(diǎn)是輸出質(zhì)量好的精度和穩(wěn)定性,波形,頻率和高頻率的,空的振幅和相位是步入需要。 (c) 20 MHz wave form output. With the oscillograph testing, it shows that the circuit work stably and rightly. The various parametric index exhibit fine numerical control effect. a. Output frequency range: 1Hz—30MHz, peaktopeak value: 50mV~ 10V; dutyfactor: 10%~100%, difference≤1%。 TC external referenced clock circle, unit: s。Design of Digital Controlled Signal Generator Based on DDS and MCU Yinjun Chena, Zehuai Yuan Faculty of Electronic Information and Mechanical Electrical Engineering, Zhaoqing University, Zhaoqing 526061, China Keywords: DDS。 on the other hand, any wave form can be achieved by making use of micro controller unit (MCU) to carry out figure frequency bining and DA converting. The experiment and applying testing have shown that the numerical control signal source posed of STM32 micro controller and DDS chip can work well. DDS and wave form programming pattern The core of DDS system is phase accumulator carriage, and it is posed of a ADR and one unit phase register. When any clock es, the phase register increases by with the step length, phase register output and phase control word add together, and then the output is imported to sine inquiry form address. The sine inquiring form includes the numeral extent information of oneperiod sine wave, each address corresponds to the phase dot of 0~360 degrees of the sine wave. The mapping digital signal drives DAC and outputs analog value. The output sine circle and frequency are The phase register will return to the original state when the 2N/M fc clock is finished. Accordingly, the DDS system output a sine wave when the sine inquiring form finish a circle. The output sine circle and frequency is TO output sine wave circle, unit: s。 (b) 1 MHz wave form output。因此,我們利用它們之間的協(xié)同設(shè)計(jì)數(shù)字控制信號(hào)發(fā)生器。另一方面,可以任意波形通過開展數(shù)字頻率結(jié)合使用的微控制器單元( MCU)和 DA轉(zhuǎn)換實(shí)現(xiàn)。輸出正弦波的周期和頻率為 TO 輸出正弦波周期,單位:秒 。 合成所需的頻率信號(hào),它需要完成以下步驟: (頻率控制字 K),輸出 2 pi累計(jì)相位(使用相位累加器)。一個(gè)信號(hào)輸出通過控制 AD9850,可產(chǎn)生 30 MHz正弦波和矩形波,其他輸出的任意波形及其頻率低于 10千赫是通過頻率數(shù)值混合器 DAC0832 產(chǎn)生的。數(shù)字到模擬轉(zhuǎn)換電路,如圖 2所示 : 圖 2 DAC 電路 PWM轉(zhuǎn)換 DA電路 低通濾波器的 PWM信號(hào)從 STM32到穩(wěn)定使用電壓跟隨器,然后穩(wěn)定將產(chǎn)生一個(gè)穩(wěn)定的輸出電壓,通過調(diào)整 PWM占空比可調(diào)節(jié)電壓。系統(tǒng)軟件的設(shè)計(jì)過程如圖 5所示。 然后 8位數(shù)據(jù)被加載在 WCLK上升沿,將指針設(shè)置到下一個(gè)輸入注冊。圖 6給出了相應(yīng)的實(shí)驗(yàn)波形。 五、一步一步的自動(dòng)化,定義:最高值,最低值,一步一步的速度, 一步一步的計(jì)算,按升序或下降,循環(huán)或不循
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