鋰電池BMS管理技術(shù)是移動(dòng)機(jī)器人的關(guān)鍵技術(shù),本文設(shè)計(jì)了基于bq76PL455、STM32F103的鋰電池管理系統(tǒng),實(shí)現(xiàn)了電池組電壓、電流、過(guò)壓、過(guò)流等狀態(tài)監(jiān)測(cè);系統(tǒng)配置均衡電路,電池充電過(guò)程中若出現(xiàn)電池單體電壓不平衡現(xiàn)象,會(huì)觸發(fā)均衡電路,進(jìn)而提高電池的安全性,延長(zhǎng)使用壽命。Lithium battery BMS management technology is the key technology of mobile robot.The lithium battery management system based on bq76PL455 and STM32F103 is proposed to realize the monitoring of battery pack voltage,current,overvoltage and overcurrent.The system is equipped with equalization circuit.When the battery cell voltage imbalance occurs,the equalization circuit is triggered to improve the safety and service life of the battery.
標(biāo)簽： 移動(dòng)機(jī)器人 鋰電池 bms管理系統(tǒng)
上傳時(shí)間： 2022-04-02
上傳用戶：
在全球氣候變暖和石油資源短缺的形勢(shì)下,推動(dòng)新能源汽車的發(fā)展將成為汽車行業(yè)一種新的發(fā)展方向。在大力發(fā)展新能源電動(dòng)汽車行業(yè)的同時(shí)還應(yīng)兼顧電動(dòng)汽車充電設(shè)施的發(fā)展,因此對(duì)電動(dòng)汽車充電樁的設(shè)計(jì)與研究顯得十分必要。對(duì)電動(dòng)汽車直流充電樁的硬件系統(tǒng)進(jìn)行設(shè)計(jì),主要的硬件電路包括安全監(jiān)測(cè)電路、總壓采集電路、溫濕度檢測(cè)電路、語(yǔ)音電路。軟件包括主要流程圖和溫濕度檢測(cè)流程圖。Under the situation of global warming and shortage of petroleum resources,promoting the development of new energy vehicles will become a new development direction for the automotive industry.While vigorously developing the new energy electric vehicle industry,we should also take into account the development of electric vehicle charging facilities.Therefore,the design and research of electric vehicle charging piles is very necessary.The hardware system of the electric vehicle DC charging pile is designed.The main hardware circuits include safety monitoring circuit,total voltage collecting circuit,temperature and humidity detecting circuit,voice circuit and CAN communication.The software includes a main flow chart and a temperature and humidity detection flow chart.
標(biāo)簽： 電動(dòng)汽車
上傳時(shí)間： 2022-04-03
上傳用戶：jason_vip1
為設(shè)計(jì)高效率、低損耗的PFC電路,本文基于UCC28019進(jìn)行電路設(shè)計(jì)。以UCC28019輸出的PWM波形來(lái)控制Boost升壓斬波為核心電路,使電路中的電容交替地充放電、電感交替的儲(chǔ)存和釋放能量,最后實(shí)現(xiàn)在輸入AC20V~24V電壓情況下穩(wěn)定輸出DC38V。測(cè)試結(jié)果表明,系統(tǒng)實(shí)現(xiàn)效率為95%左右,電壓調(diào)整率小于1%,電源功率因數(shù)0.99。交流輸入電壓為19.0-25.8 V時(shí),輸出直流電壓穩(wěn)定性較好,電感無(wú)明顯嘯叫且紋波小,具有一定的帶負(fù)載能力和實(shí)用性。In order to design the PFC circuit with high efficiency and low loss,this paper designs the circuit based on UCC28019.The PWM waveform output by UCC28019 is used to control boost chopper as the core circuit,which alternately charges and discharges capacitors,stores and releases energy by inductors,and finally achieves stable output of DC38 V under the input voltage of AC20 V~24 V.The test results show that the system achieves about 95% efficiency,the voltage adjustment rate is less than 1%,the power factor is 0.99,and the AC input voltage is 19.0-25.8 V.The output DC voltage stability is good,the inductance has no obvious whistle and the ripple is small,so it has certain load capacity and practicability.
標(biāo)簽： ucc28019 pfc 電路設(shè)計(jì)
上傳時(shí)間： 2022-04-03
上傳用戶：
本文設(shè)計(jì)了一種磁致伸縮位移傳感器,介紹了該磁致伸縮位移傳感器的測(cè)量原理,通過(guò)結(jié)構(gòu)優(yōu)化設(shè)計(jì)提高了儀器的性能,詳述了硬件電路設(shè)計(jì)及實(shí)現(xiàn)方法,完成了軟件設(shè)計(jì),實(shí)現(xiàn)了高壓充電、問(wèn)詢脈沖加載、時(shí)間測(cè)量及濾波等功能,并通過(guò)實(shí)驗(yàn)對(duì)其性能進(jìn)行了驗(yàn)證。所研制的磁致伸縮位移傳感器具有測(cè)量精度高、長(zhǎng)期穩(wěn)定性好等特點(diǎn),滿足了大量程、高精度、惡劣環(huán)境等測(cè)量的要求。A kind of sensor based on magnetostrictive principle is designed.The measuring principle of the magnetostrictive displacement sensor is introduced,the performance of the instrument is improved by the structural optimization design,and introduced the hardware circuit design and the realization method,completed the software design,realized the functions of the high voltage charging,inquiries pulse loading,time measurement and filtering,and its performance is verified through the experiment.The magnetostrictive displacement sensor has the characteristics of high measuring precision.The sensor meets the requirements of large range,high precision,poor environment and so on.
標(biāo)簽： 位移傳感器
上傳時(shí)間： 2022-04-06
上傳用戶：
介紹一種萬(wàn)能模擬信號(hào)輸入采集電路,可以同時(shí)支持電壓、電流、熱電偶、熱電阻等常見(jiàn)的工業(yè)類型信號(hào),方便后級(jí)電路的測(cè)量。該研究成果通過(guò)不斷優(yōu)化和完善,已成功應(yīng)用到了中控儀表的新產(chǎn)品中。The paper introduces a collection circuit of universal signal input. The circuit support voltage, current, thermocouple, thermal resistance and other common industrial type signal. The research results, which has been continuous optimized and improved, has been successfully applied to the new production of Zhejiang Supcon Instrument Co., Ltd.
標(biāo)簽： 采集電路
上傳時(shí)間： 2022-04-21
上傳用戶：slq1234567890
為適應(yīng)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(zhuǎn)換為正向電壓輸出。通過(guò)理論分析與仿真結(jié)合的方法對(duì)電流鏡采樣原理及4種不同的偏置電流電路方案進(jìn)行對(duì)比,最后通過(guò)實(shí)驗(yàn)數(shù)據(jù)驗(yàn)證了高精度高邊電流采樣電路的有效性。實(shí)驗(yàn)數(shù)據(jù)表明,該采樣電路可在-25~75℃的溫度工作范圍內(nèi),針對(duì)-10~＋10 A范圍內(nèi)的電流采樣實(shí)現(xiàn)優(yōu)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...
上傳時(shí)間： 2022-04-22
上傳用戶：
該步進(jìn)電機(jī)驅(qū)動(dòng)器又稱為EasyDriver，EasyDriver能夠?yàn)閮杉?jí)步進(jìn)電機(jī)提供大約每相750mA（兩極一共1.5A）的驅(qū)動(dòng)。它默認(rèn)設(shè)置為8步細(xì)分模式（所以如果你的電機(jī)是每圈200步，你使用EasyDriver時(shí)默認(rèn)為每圈1600步），更多細(xì)分模式可以通過(guò)將MS1或MS2兩個(gè)接腳接地進(jìn)行設(shè)置。這是一種基于Allegro A3967驅(qū)動(dòng)芯片的細(xì)分?jǐn)嗦菲鳌?duì)于此設(shè)計(jì)的完整規(guī)格，請(qǐng)查閱A3967的參數(shù)表。它的最大每相電流從150mA到750mA。可以采用的最大驅(qū)動(dòng)電壓大概是30V，其中包括板載5V的調(diào)壓器，所以只需要一個(gè)電源。質(zhì)優(yōu)價(jià)廉，這玩意兒只要十幾美元，比你自己制作電路板更便宜。步進(jìn)電機(jī)驅(qū)動(dòng)器設(shè)計(jì)特色：· A3967 Microstepping Driver· MS1 and MS2 pins broken out to change microstepping resolution to full, half, quarter and eighth steps (defaults to eighth)· Compatible with 4, 6, and 8 wire stepper motors of any voltage· Adjustable current control from 150mA/phase to 700mA/phase· Power supply range from 6V to 30V. The higher the voltage, the higher the torque at high speeds
標(biāo)簽： 步進(jìn)電機(jī) 驅(qū)動(dòng)器 pcb 驅(qū)動(dòng)
上傳時(shí)間： 2022-04-27
上傳用戶：
基于PSIM仿真軟件，分析了Boost電路拓?fù)浣Y(jié)構(gòu)，設(shè)定了參數(shù)要求進(jìn)行電路仿真設(shè)計(jì)，通過(guò)電路仿真軟件PSIM對(duì)Boost電路工作在CCM模式下，合理設(shè)置占空比參數(shù)。實(shí)驗(yàn)結(jié)果表明理論分析與仿真的一致性和參數(shù)設(shè)計(jì)的正確性，輸出電壓和電流參數(shù)穩(wěn)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(biāo)簽： psim 開(kāi)關(guān)電源 boost
上傳時(shí)間： 2022-05-04
上傳用戶：
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
基于DSP28035的高速永磁無(wú)刷直流電機(jī)驅(qū)動(dòng)系統(tǒng)，包括論文和軟硬設(shè)計(jì)資料。摘要參賽作品為基于DSP28035的高速永磁無(wú)刷直流電機(jī)驅(qū)動(dòng)系統(tǒng)。該系統(tǒng)以一臺(tái)額定轉(zhuǎn)速60 krpm的高速永磁無(wú)刷直流電機(jī)、交錯(cuò)并聯(lián)的Buck電路以及全橋電路為硬件平臺(tái)，以DSP28035為控制核心，實(shí)現(xiàn)了調(diào)壓調(diào)速功能和基于坐標(biāo)變換的無(wú)位置傳感器新技術(shù)。為實(shí)現(xiàn)該系統(tǒng)要求，本作品充分利用了DSP28035的資源例如：CLA模塊，模擬比較器、HPWM模塊以及AD轉(zhuǎn)換模塊等。AbstractThis work is the drive system for a high speed permanent magnet burshless dc motor based on DSP28035. The hardware platform consists of a BLDC motor(rated speed is 60000rpm), a Buck circuit and an inverter. Under the control of DSP28035, this system can achieve the goal of adjusting the motor’s speed with voltage and the function of sensorless control based on the coordinate transformation. By making full use of resources of the core, such as CLA, analog comparator, HPWM and AD converters, the whole system can meet the requirements.1 引言高速永磁無(wú)刷直流電機(jī)驅(qū)動(dòng)系統(tǒng)由于基波頻率較高（一般在1kHZ以上），利用逆變橋斬波進(jìn)行調(diào)速的控制方式通常會(huì)受到開(kāi)關(guān)管開(kāi)關(guān)頻率的限制，因此該系統(tǒng)多采用三相全橋前級(jí)加Buck電路進(jìn)承擔(dān)調(diào)壓調(diào)速的功能，而三相全橋主要承擔(dān)邏輯換相的功能。然而，傳統(tǒng)Buck電路所需電感的體積較大，增加了系統(tǒng)的體積，降低了系統(tǒng)的功率密度。
上傳時(shí)間： 2022-05-08
上傳用戶：bluedrops
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