鋰電池BMS管理技術是移動機器人的關鍵技術,本文設計了基于bq76PL455、STM32F103的鋰電池管理系統,實現了電池組電壓、電流、過壓、過流等狀態監測;系統配置均衡電路,電池充電過程中若出現電池單體電壓不平衡現象,會觸發均衡電路,進而提高電池的安全性,延長使用壽命。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.
上傳時間： 2022-04-02
上傳用戶：
電學中的測量技術涉及范圍非常廣,電流測量在電學計量中占有非常重要的位置。如何精確地進行電流測量是精密測量的一大難題。傳統的電流檢測電路多采用運算放大芯片與片外電流檢測電路相結合的方式,電路集成度很低,需要較多的接口和資源才能完成對電路的檢測。本文把所有電路部分都集成在一塊芯片上,包括檢測電阻,運算放大器電路及模擬轉數字轉換電路,從而在電路內部可以進行電流檢測,使電路更好的集成化。前置電路使用二級共源共柵結構的運算放大器,減小溝道長度調制效應造成的電流誤差。10位SAR ADC中采用電容驅動能力強的傳輸門保證了模數轉化器的有效精度。比較器模塊采用再生鎖存器與遲滯比較器作為基礎單元組合解決精密測量的問題。本設計可以作為嵌入芯片內的一小部分而檢測芯片中的微小電流1mA~100mA,工作電壓在1.8v左右,電流檢測精度預期達到10uA的需求。The measurement technology in electricity involves a wide range,and Current measurement plays a very important position in electrical measurement.How to accurately measure Current is a big problem in precision measurement. The traditional Current detecting circuit adopts the combination of the operational amplifier chip and theoff-chip Current detecting circuit, The circuit integration is very low, and more interfaces and resources are needed tocomplete the circuit detection.This topic integrates all the circuit parts into one chip, including detection resistance, operational amplifier circuit andanalog to digital conversion circuit. Highly integrated circuit makes the external resources on the chip more intensive,so that Current detection can be carried out inside the circuit, so that the circuit can be better integrated. Thefront-end circuit of this project uses two-stage cascade operational amplifier and cascade tube to reduce the Currenterror caused by channel length modulation effect. In 10-bit SAR ADC, the transmission gate with strong capacitivedriving ability ensures the effective accuracy of the analog-to-digital converter. Comparator module uses regenerativelatch and hysteresis comparator as basic unit to solve the difficult problem of precision measurement. This topic can beused as a small part of the embedded chip to detect the micro-Current in the chip 1 mA~100 mA, the working voltageis about 1.8v, and the Current detection accuracy is expected to reach the requirement of 10 uA.
上傳時間： 2022-04-03
上傳用戶：
隨著電磁閥在工業和日常應用的增多,其功耗越來越被人們所重視。通過對電磁閥驅動電路的研究,設計一套電磁閥節能驅動電路。不僅提高了電磁閥的響應時間,更重要的是降低了功耗,使電磁閥由工作在大電流狀態下,變成大電流啟動小電流維持的工作狀態。減少了由電流過大引起的電磁閥線圈過熱,增加了電磁閥的安全性。The power consumption of an electromagnetic valve is drawing increasingly more attentiori as it is widely used in industrial production and daily life. In this study, an energy - saving driving circuit of electromagnetic valves was designed. It can make an electromagnetic valve to start with a high Current while work with a low Current; thereby the power consumption can be reduced. Besides, it can shorten the response time of an electromagnetic valve and improve the security of the valve.
上傳時間： 2022-04-16
上傳用戶：
介紹一種萬能模擬信號輸入采集電路,可以同時支持電壓、電流、熱電偶、熱電阻等常見的工業類型信號,方便后級電路的測量。該研究成果通過不斷優化和完善,已成功應用到了中控儀表的新產品中。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.
標簽： 采集電路
上傳時間： 2022-04-21
上傳用戶：slq1234567890
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...
上傳時間： 2022-04-22
上傳用戶：
該步進電機驅動器又稱為EasyDriver，EasyDriver能夠為兩級步進電機提供大約每相750mA（兩極一共1.5A）的驅動。它默認設置為8步細分模式（所以如果你的電機是每圈200步，你使用EasyDriver時默認為每圈1600步），更多細分模式可以通過將MS1或MS2兩個接腳接地進行設置。這是一種基于Allegro A3967驅動芯片的細分斷路器。對于此設計的完整規格，請查閱A3967的參數表。它的最大每相電流從150mA到750mA。可以采用的最大驅動電壓大概是30V，其中包括板載5V的調壓器，所以只需要一個電源。質優價廉，這玩意兒只要十幾美元，比你自己制作電路板更便宜。步進電機驅動器設計特色：· 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
上傳時間： 2022-04-27
上傳用戶：
STM32 F0系列 MCU 集成庫 原理圖庫 PCB封裝庫文件CSV text has been written to file : STM32 F0.csvLibrary Component Count : 17Name Description----------------------------------------------------------------------------------------------------STM32F050C4T6A ARM Cortex-M0 32-bit RISC core (48 MHz max), 16kB Flash, 4 kB Internal RAM, 39 High Current I/Os, -40 to +85癈, 48-Pin LQFP, TraySTM32F050C6T6 ARM Cortex-M0 32-bit RISC core (48 MHz max), 32kB Flash, 4 kB Internal RAM, 39 High Current I/Os, -40 to +85癈, 48-Pin LQFP, TraySTM32F050C6T6A ARM Cortex-M0 32-bit RISC core (48 MHz max), 32kB Flash, 4 kB Internal RAM, 39 High Current I/Os, -40 to +85癈, 48-Pin LQFP, TraySTM32F050K4U6A ARM Cortex-M0 32-bit RISC core (48 MHz max), 16kB Flash, 4 kB Internal RAM, 27 High Current I/Os, -40 to +85癈, 32-Pin UFQFPN, TraySTM32F050K6U6A ARM Cortex-M0 32-bit RISC core (48 MHz max), 32kB Flash, 4 kB Internal RAM, 27 High Current I/Os, -40 to +85癈, 32-Pin UFQFPN, TraySTM32F051C4T6 ARM Cortex-M0 32-bit RISC core (48 MHz max), 16kB Flash, 4 kB Internal RAM, 39 High Current I/Os, -40 to +85癈, 48-Pin LQFP, TraySTM32F051C6T6 ARM Cortex-M0 32-bit RISC core (48 MHz max), 32kB Flash, 4 kB Internal RAM, 39 High Current I/Os, -40 to +85癈, 48-Pin LQFP, TraySTM32F051C8T6 ARM Cortex-M0 32-bit RISC core (48 MHz max), 64kB Flash, 8 kB Internal RAM, 39 High Current I/Os, -40 to +85癈, 48-Pin LQFP, TraySTM32F051K4U6 ARM Cortex-M0 32-bit RISC core (48 MHz max), 16kB Flash, 4 kB Internal RAM, 27 High Current I/Os, -40 to +85癈, 32-Pin UFQFPN, TraySTM32F051K6U6 ARM Cortex-M0 32-bit RISC core (48 MHz max), 32kB Flash, 4 kB Internal RAM, 27 High Current I/Os, -40 to +85癈, 32-Pin UFQFPN, TraySTM32F051K8U6 ARM Cortex-M0 32-bit RISC core (48 MHz max), 64kB Flash, 8 kB Internal RAM, 27 High Current I/Os, -40 to +85癈, 32-Pin UFQFPN, TraySTM32F051R4T6 ARM Cortex-M0 32-bit RISC core (48 MHz max), 16kB Flash, 4 kB Internal RAM, 55 High Current I/Os, -40 to +85癈, 64-Pin LQFP, TraySTM32F051R4T6TR ARM Cortex-M0 32-bit RISC core (48 MHz max), 16kB Flash, 4 kB Internal RAM, 55 High Current I/Os, -40 to +85癈, 64-Pin LQFP, Tape and ReelSTM32F051R6T6 ARM Cortex-M0 32-bit RISC core (48 MHz max), 32kB Flash, 4 kB Internal RAM, 55 High Current I/Os, -40 to +85癈, 64-Pin LQFP, TraySTM32F051R8T6 ARM Cortex-M0 32-bit RISC core (48 MHz max), 64kB Flash, 8 kB Internal RAM, 55 High Current I/Os, -40 to +85癈, 64-Pin LQFP, TraySTM32F051R8T7 ARM Cortex-M0 32-bit RISC core (48 MHz max), 64kB Flash, 8 kB Internal RAM, 55 High Current I/Os, -40 to +105癈, 64-Pin LQFP, TraySTM32F051R8TR ARM Cortex-M0 32-bit RISC core (48 MHz max), 64kB Flash, 8 kB Internal RAM, 55 High Current I/Os, -40 to +105癈, 64-Pin LQFP, Tape and Reel
上傳時間： 2022-04-30
上傳用戶：
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.
上傳時間： 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.
標簽： JW7805
上傳時間： 2022-05-06
上傳用戶：slq1234567890
基于DSP28335的永磁同步電機調速系統設計摘要（中英文） 本控制系統的設計是為了實現基于TMS320F28335的永磁同步電動機的調速系統，并把它引用到全電動注塑機當中。本系統使用SVPWM的控制方法，通過采樣電機電流和旋轉變壓器的位置信息，實現速度、電流雙閉環控制。通過TMS320F28335的硬件浮點處理核心，實現應用于永磁同步電機的浮點算法，去取代過去的定點算法，提高代碼效率。 Abstract: The control system is designed to realize TMS320F28335 based on the permanent magnet synchronous motor speed control system, and put it to quoting all electric of injection molding machine. The ystem of the control method used SVPWM, through the sampling motor Current and rotating transformer 1. 引言1.1 設計背景及目的 本永磁同步電機調速系統是全電動注塑機的其中一個應用部分。全電動注塑機憑借著其節約能源、清潔、噪聲少、速度控制效果好、精度高、可重復性高、成本低等眾多優點，成為了當下高端注塑機發展的一個方向。 全電動注塑機的所有運動機構都采用交流伺服電動機驅動，一個穩定高效的永磁同步電動機驅動方案成為了全電動注塑機性能的一個總要部分。本次設計以適用于全電動注塑機的永磁同步電動機控制系統為目標進行設計，采用TI公司的TMS320F28335作為控制核心。憑借TMS320F28335高速的運算能力，適用于電動機控制的各種外設，以及TMS320F283XX特有的硬件浮點運算能力，進行永磁同步電動機的調速控制系統的設計。
上傳時間： 2022-05-08
上傳用戶：
