電子書-RTL Design Style Guide for Verilog HDL540頁(yè)A FF having a fixed input value is generated from the description in the upper portion of Example 2-21. In this case, ’0’ is output when the reset signal is asynchronously input, and ’1’ is output when the START signal rises. Therefore, the FF data input is fixed at the power supply, since the typical value ’1’ is output following the rise of the START signal. When FF input values are fixed, the fixed inputs become untestable and the fault detection rate drops. When implementing a scan design and converting to a scan FF, the scan may not be executed properl not be executed properly, so such descriptions , so such descriptions are not are not recommended. recommended.[1] As in the lower part of Example 2-21, be sure to construct a synchronous type of circuit and ensure that the clock signal is input to the clock pin of the FF. Other than the sample shown in Example 2-21, there are situations where for certain control signals, those that had been switched due to the conditions of an external input will no longer need to be switched, leaving only a FF. If logic exists in a lower level and a fixed value is input from an upper level, the input value of the FF may also end up being fixed as the result of optimization with logic synthesis tools. In a situation like this, while perhaps difficult to completely eliminate, the problem should be avoided as much as possible.
標(biāo)簽： RTL verilog hdl
上傳時(shí)間： 2022-03-21
上傳用戶：canderile
本設(shè)計(jì)介紹了一種基于STM32單片機(jī)控制的智能水杯,可利用插口式電源或無線充電底座為加熱器提供能量,并在達(dá)到某種飲品所需溫度時(shí)進(jìn)行保溫。水杯內(nèi)置充電電池,可選用USB接口或無線充電。在水杯內(nèi)部設(shè)置無線模塊,用戶利用手機(jī)App與水杯進(jìn)行匹配進(jìn)行加熱操作,加熱完后水杯會(huì)通過手機(jī)App和液晶顯示屏實(shí)時(shí)反饋液體溫度,通過指示燈顯示電量情況等,給用戶進(jìn)行提醒。該智能水杯設(shè)計(jì)創(chuàng)新,實(shí)用價(jià)值較高。This paper introduces an intelligent water cup based by STM32 microcontroller,it can provide energy for the heater by socket type power supply or wireless charging base,and hold temperature needed for some kind of drink.Builtedin rechargeable battery,water cup can use USB or wireless charging.The wireless module is set up inside it,and customers can use mobile App to match and heat.After heating,water cup feeds back liquid temperature through the mobile App,and then displays on LCD,reminds users through the indicator light.The intelligent water cup is designed innovatively and has high practical value.
上傳時(shí)間： 2022-03-28
上傳用戶：
近距電能傳輸——高效安全近距電能傳輸一般基于電磁感應(yīng)原理進(jìn)行。在此技術(shù)基礎(chǔ)上，當(dāng)接收器鄰近發(fā)射器時(shí)才會(huì)進(jìn)行電能傳輸。電磁感應(yīng)技術(shù)的歷史長(zhǎng)達(dá)百年，多年米一直應(yīng)用于各類電子產(chǎn)品中—如此普及全因其簡(jiǎn)單、高效以及安全技術(shù)概覽以下將為你簡(jiǎn)要介紹無線電能傳輸技術(shù)。System Overview(Communication)Receiver sends messagesTo provide control information to the transmitterBy load modulation on the power signaTransmitter receives messagesTo receive control information frorn the recelverBy de-modulation of the reflected loadPower Pick Up( Receiver)Secondary coil (L Serial resonance capacitor (C) for efficient power transfer Parallel resonance capacitor(C, )for detection purposes Rectifier: full bridge(diode, or switched)+ capacitor Output switch for(dis)connecting the loadReceiver modulates load by Switching modulation resistor(R,n),or Switching modulation capacitor(Ca)Transmitter de-modulates reflected load by Sensing pnmary coil curent (p)and/o Sensing primary coil voltage (V,
上傳時(shí)間： 2022-03-31
上傳用戶：
目的:自主研制一款超聲手術(shù)刀電源控制系統(tǒng),以減少能量的消耗,維持手術(shù)刀的正常溫度。方法:對(duì)超聲換能器在諧振附近的等效電路建立模型,并設(shè)計(jì)基于數(shù)字信號(hào)處理(DSP)的超聲手術(shù)刀的硬件控制系統(tǒng)。結(jié)果:經(jīng)對(duì)電源控制系統(tǒng)的電路和工作性能測(cè)試,生成的電流和電壓的有效值等參數(shù),能夠及時(shí)調(diào)整電源的頻率,并達(dá)到預(yù)期的功能指標(biāo),使超聲手術(shù)刀工作在諧振狀態(tài)。結(jié)論:以DSP為核心設(shè)計(jì)的超聲手術(shù)刀電源控制系統(tǒng),測(cè)試指標(biāo)均能夠達(dá)到預(yù)期的要求,能夠使系統(tǒng)在諧振狀態(tài)下工作。Objective: To independently develop a power control system of ultrasonic scalpel so as to reduce the energy consumption and maintain the normal temperature of ultrasonic scalpel. Methods: In this paper, the model of equivalent circuit of ultrasonic transducer nearby syntony was built up, and the hardware control system of ultrasonic scalpel based on digital signal processing(DSP) was designed. Results: Through testing the circuit and work performance of power control system, the series of parameters such as effective value and so on which were produced by this system could adjust frequency of power source in time and attain anticipative functional indicator, and it took the ultrasonic scalpel to work in syntonic situation. Conclusion: The tested indicators of power control system of ultrasonic scalpel based on the kernel design of DSP can attain anticipative requirement, and can take this system to work in syntonic situation.
標(biāo)簽： 數(shù)字信號(hào)處理 超聲手術(shù)刀 電源控制
上傳時(shí)間： 2022-04-03
上傳用戶：bluedrops
針對(duì)目前MSP430單片機(jī)實(shí)驗(yàn)裝置較少、實(shí)驗(yàn)內(nèi)容少,而且無MSP430高端產(chǎn)品的實(shí)驗(yàn)裝置,研制了基于MSP430F5529單片機(jī)的綜合實(shí)驗(yàn)裝置,主要包括MSP430 Launch Pad和母板兩部分。較傳統(tǒng)的單片機(jī)實(shí)驗(yàn)裝置增加了模擬電路的設(shè)置,設(shè)計(jì)的實(shí)驗(yàn)?zāi)軌蚶脝纹瑱C(jī)的所有外設(shè),可進(jìn)行模塊基礎(chǔ)實(shí)驗(yàn)和綜合實(shí)驗(yàn)兩大類實(shí)驗(yàn),非常適合自動(dòng)化和電氣信息類大學(xué)生學(xué)習(xí)使用。Concerning with the lack of experimental equipment and content based on MSP430,and especially,the experimental equipment of MSP430 senior products,an experimental equipment based on MSP430F5529 microcontroller is developed. It mainly consists of two parts： MSP430 Launch Pad and main board. Compared with traditional microcontroller experiment equipment,a few analog circuits were added. The experiment we set up takes advantage of all microcontroller peripherals. Students can do two kinds of experiments： module experiment and complex experiment.Therefore it fits university students in automation and electrical major very well.
標(biāo)簽： msp430f5529 單片機(jī)
上傳時(shí)間： 2022-04-13
上傳用戶：
意法半導(dǎo)體STM8系列參考手冊(cè)Program memory: 8 Kbyte Flash memory; dataretention 20 years at 55 °C after 100 cycles? RAM: 1 Kbyte? Data memory: 128 bytes true data EEPROM;endurance up to 100 k write/erase cycles
標(biāo)簽： stm8
上傳時(shí)間： 2022-04-27
上傳用戶：zhaiyawei
為解決移相全橋電路驅(qū)動(dòng)及相角控制問題,設(shè)計(jì)了一種數(shù)字控制的移相全橋驅(qū)動(dòng)電路.以TPL521為光耦隔離、IR2110為柵極驅(qū)動(dòng)芯片.由DSP產(chǎn)生PWM信號(hào),經(jīng)過光耦隔離和邏輯電路后送至IR2110進(jìn)行相角控制.文章對(duì)IR2110驅(qū)動(dòng)電路原理進(jìn)行分析及參數(shù)進(jìn)行設(shè)計(jì),對(duì)TMS320F28335進(jìn)行設(shè)置并給出部分代碼.實(shí)驗(yàn)結(jié)果表明：通過TMS320F28335可產(chǎn)生的不同相角的PWM波形,滿足了移相全橋?qū)Σ煌嘟强刂频囊?In order to solve the problem of phase-shifted full-bridge circuit driving and phase angle control,a digitally controlled phaseshifted full-bridge driving circuit was designed. TPL521 optocoupler isolation,IR2110 gate driver chip. PWM signals are generated by the DSP and sent to the IR2110 for phase angle control after optocoupler isolation and logic circuits. This text carries on the analysis to the principle of IR2110 drive circuit and parameter design,set up and give out some code to TMS320F28335. The experimental results show that the PWM waveforms with different phase angles generated by TMS320F28335 can meet the requirements of phase-shifted full-bridge control for different phase angles.
上傳時(shí)間： 2022-05-03
上傳用戶：zhanglei193
The JW? 7805 is a low noise low-dropout (LDO) voltage regulator with enable function that operates from 1.8V to 5.5V. It provides up to 300mA of output current and offers low-power operation in miniaturized packaging. JW7805 supports fixed output voltage 0.9V, 1.0V, 1.05V, 1.1V,1.2V, 1.3V, 1.35V, 1.5V, 1.8V, 1.85V, 2.1V, 2.2V, 2.3V, 2.5V, 2.6V, 2.7V, 2.8V, 2.85V, 2.9V, 3.0V,3.1V, 3.3V, 3.6V, 4.2V, 4.4V and 5.0V. The features of low quiescent current as low as 6uA and almost zero disable current are ideal for powering the battery equipment. JW7805’s low output noise and high PSRR are also friendly to RF systems.
標(biāo)簽： JW7805
上傳時(shí)間： 2022-05-06
上傳用戶：slq1234567890
以STM32F103C8T6為核心,設(shè)計(jì)了無刷直流電機(jī)控制器硬件電路。電路主要包括IR2310構(gòu)成的PWM驅(qū)動(dòng)電路、IRF3808構(gòu)成的逆變電路、增量式旋轉(zhuǎn)編碼構(gòu)成的速度反饋電路。控制器具有CAN和RS232通信接口,可與計(jì)算機(jī)或PLC構(gòu)成速度或位置伺服系統(tǒng)。利用由xPC目標(biāo)搭建的半實(shí)物仿真平臺(tái)對(duì)PI參數(shù)進(jìn)行整定。測(cè)試了控制器的速度伺服響應(yīng)性能,給定速度為2400rpm時(shí),控制器響應(yīng)時(shí)間為0.32s。實(shí)驗(yàn)結(jié)果表明,系統(tǒng)工作可靠,穩(wěn)定性好,響應(yīng)速度快,可以滿足上肢康復(fù)機(jī)器人的機(jī)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(biāo)簽： stm32 無刷直流電機(jī)
上傳時(shí)間： 2022-05-07
上傳用戶：
CodeWarrior Development Studio(開發(fā)工作室)是完整的用于編程應(yīng)用中硬件bring-up的集成開發(fā)環(huán)境。 采用CodeWarrior IDE，開發(fā)人員可以得益于采用各種處理器和平臺(tái)(從Motorola到TI到Intel)間的通用功能性。根據(jù)Gartner Dataquest的報(bào)告，CodeWarrior編譯器和調(diào)試器在商用嵌入式軟件開發(fā)工具的使用率方面排名第一。而這只是流行的CodeWarrior軟件開發(fā)工具中的兩個(gè)。CodeWarrior包括構(gòu)建平臺(tái)和應(yīng)用所必需的所有主要工具 - IDE、編譯器、調(diào)試器、編輯器、鏈接器、匯編程序等。另外，CodeWarrior IDE支持開發(fā)人員插入他們所喜愛的工具，使他們可以自由地以希望的方式工作。
標(biāo)簽： codewarrior
上傳時(shí)間： 2022-05-09
上傳用戶：
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