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  • AHP toolbox AHPCALC Perform a complete AHP calculation. AHPHIER One-step hierarchic

    AHP toolbox AHPCALC Perform a complete AHP calculation. AHPHIER One-step hierarchical assembly of AHP weighting vector. AHPREORDER internal reordering function called by AHPCALC. AHPVECTOR Calculate the AHP ranking or weighting vector from an AHP reciproal matrix. AHPMAKEMAT Turn a vector of comparisons into an AHP reciprocal matrix. Copyright (C) 2001 Michael J. Scott

    標(biāo)簽: calculation hierarchic AHP One-step

    上傳時(shí)間: 2013-11-28

    上傳用戶:PresidentHuang

  • 自動(dòng)導(dǎo)引小車調(diào)度(外文)

    Guided vehicles (GVs) are commonly used for the internal transportation of loads in warehouses, production plants and terminals. These guided vehicles can be routed with a variety of vehicle dispatching rules in an attempt to meet performance criteria such as minimizing the average load waiting times. In this research, we use simulation models of three companies to evaluate the performance of several real-time vehicle dispatching rules, in part described in the literature. It appears that there is a clear difference in average load waiting time between the different dispatching rules in the different environments. Simple rules, based on load and vehicle proximity (distance-based) perform best for all cases. The penalty for this is a relatively high maximum load waiting time. A distance-based rule with time truncation, giving more priority to loads that have to wait longer than a time threshold, appears to yield the best possible overall performance. A rule that particularly considers load-waiting time performs poor overall. We also show that using little pre-arrival information of loads leads to a significant improvement in the performance of the dispatching rules without changing their performance ranking.

    標(biāo)簽: Testing and classifying vehicle dispatching rules in three real-world settings

    上傳時(shí)間: 2016-04-01

    上傳用戶:五塊錢的油條

  • Fuel+Cell+Micro-grids

    The solid high-polymer-film-type fuel cell (PEM-FC) system is used as the power supply equipment for transportation and replaces an internal combustion engine. A reduction of the environmental load is expected through the cogeneration system’s (CGS) use of the PEM-FC system as a distributed power supply to individual houses, apartments, and so forth [1–3]. The growing use of distributed power systems, such as fuel cells, the reduction of power-transmission losses, and an increase of waste heat recovery are expected. Therefore, the reduction of carbon- dioxide emission is also expected as compared to conventional energy supply methods using commercial electric power. 

    標(biāo)簽: Micro-grids Fuel Cell

    上傳時(shí)間: 2020-06-07

    上傳用戶:shancjb

  • Plug In Electric Vehicles in Smart Grids

    Plug in Electric Vehicles (PEVs) use energy storages usually in the form of battery banks that are designed to be recharged using utility grid power. One category of PEVs are Electric Vehicles (EVs) without an internal-combustion (IC) engine where the energy stored in the battery bank is the only source of power to drive the vehicle. These are also referred as Battery Electric Vehicles (BEVs). The second category of PEVs, which is more commercialized than the EVs, is the Plug in

    標(biāo)簽: Electric Vehicles Grids Smart Plug In in

    上傳時(shí)間: 2020-06-07

    上傳用戶:shancjb

  • Plug In Electric Vehicles

    Plug in Electric Vehicles (PEVs) use energy storages usually in the form of battery banks that are designed to be recharged using utility grid power. One category of PEVs are Electric Vehicles (EVs) without an internal-Combustion (IC) engine where the energy stored in the battery bank is the only source of power to drive the vehicle. These are also referred as Battery Electric Vehicles (BEVs). The second category of PEVs, which is more commercialized than the EVs, is Plug in Hybrid Electric Vehicles (PHEVs) where the role of the energy storage is to supplement the power produced by the IC engine. 

    標(biāo)簽: Electric Vehicles Plug In

    上傳時(shí)間: 2020-06-07

    上傳用戶:shancjb

  • Electric Vehicles in Smart Grids

    Plug in Electric Vehicles (PEVs) use energy storages usually in the form of battery banks that are designed to be recharged using utility grid power. One category of PEVs are Electric Vehicles (EVs) without an internal-Combustion (IC) engine where the energy stored in the battery bank is the only source of power to drive the vehicle. These are also referred to as Battery Electric Vehicles (BEVs). The second category of PEVs, which is more commercialized than the EVs, is the Plug in Hybrid Electric Vehicles (PHEVs) where the role of energy storage is to supplement the power produced by the IC engine. 

    標(biāo)簽: Electric Vehicles Smart Grids in

    上傳時(shí)間: 2020-06-07

    上傳用戶:shancjb

  • MiniCore

    An Arduino core for the ATmega328, ATmega168, ATmega88, ATmega48 and ATmega8, all running a [custom version of Optiboot for increased functionality](#write-to-own-flash). This core requires at least Arduino IDE v1.6.2, where v1.8.5+ is recommended. <br/> **This core gives you two extra IO pins if you're using the internal oscillator!** PB6 and PB7 is mapped to [Arduino pin 20 and 21](#pinout).<br/> If you're into "generic" AVR programming, I'm happy to tell you that all relevant keywords are being highlighted by the IDE through a separate keywords file. Make sure to test the [example files](https://github.com/MCUdude/MiniCore/tree/master/avr/libraries/AVR_examples/examples) (File > Examples > AVR C code examples). Try writing a register name, <i>DDRB</i> for instance, and see for yourself!

    標(biāo)簽: MiniCore

    上傳時(shí)間: 2021-02-22

    上傳用戶:

  • 基于TMS320F2812 光伏并網(wǎng)發(fā)電模擬裝置PROTEL設(shè)計(jì)原理圖+PCB+軟件源碼+WORD論

    基于TMS320F2812 光伏并網(wǎng)發(fā)電模擬裝置PROTEL設(shè)計(jì)原理圖+PCB+軟件源碼+WORD論文文檔,硬件采用2層板設(shè)計(jì),PROTEL99SE 設(shè)計(jì)的工程文件,包括完整的原理圖和PCB文件,可以做為你的學(xué)習(xí)設(shè)計(jì)參考。 摘要:本文實(shí)現(xiàn)了一個(gè)基于TMS320F2812 DSP芯片的光伏并網(wǎng)發(fā)電模擬裝置,采用直流穩(wěn)壓源和滑動(dòng)變阻器來模擬光伏電池。通過TMS320F2812 DSP芯片ADC模塊實(shí)時(shí)采樣模擬電網(wǎng)電壓的正弦參考信號(hào)、光伏電池輸出電壓、負(fù)載電壓電流反饋信號(hào)等。經(jīng)過數(shù)據(jù)處理后,用PWM模塊產(chǎn)生實(shí)時(shí)的SPWM 波,控制MOSFET逆變?nèi)珮蜉敵稣也ā1疚挠肞I控制算法實(shí)現(xiàn)了輸出信號(hào)對(duì)給定模擬電網(wǎng)電壓的正弦參考信號(hào)的頻率和相位跟蹤,用恒定電壓法實(shí)現(xiàn)了光伏電池最大功率點(diǎn)跟蹤(MPPT),從而達(dá)到模擬并網(wǎng)的效果。另外本裝置還實(shí)現(xiàn)了光伏電池輸出欠壓、負(fù)載過流保護(hù)功能以及光伏電池輸出欠壓、過流保護(hù)自恢復(fù)功能、聲光報(bào)警功能、孤島效應(yīng)的檢測、保護(hù)與自恢復(fù)功能。系統(tǒng)測試結(jié)果表明本設(shè)計(jì)完全滿定設(shè)計(jì)要求。關(guān)鍵詞:光伏并網(wǎng),MPPT,DSP  Photovoltaic Grid-connected generation simulator Zhangyuxin,Tantiancheng,Xiewuyang(College of Electrical Engineering, Chongqing University)Abstract: This paper presents a photovoltaic grid-connected generation simulator which is based on TMS320F2812 DSP, with a DC voltage source and a variable resistor to simulate the characteristic of photovoltaic cells. We use the internal AD converter to real-time sampling the referenced grid voltage signal, outputting voltage of photovoltaic, feedback outputting voltage and current signal. The PWM module generates SVPWM according to the calculation of the real-time sampling data, to control the full MOSFET inverter bridge output sine wave. We realized that the output voltage of the simulator can track the frequency and phase of the referenced grid voltage with PI regulation, and the maximum photovoltaic power tracking with constant voltage regulation, thereby achieved the purpose of grid-connected simulation. Additionally, this device has the over-voltage and over-current protection, audible and visual alarm, islanding detecting and protection, and it can recover automatically. The testing shows that our design is feasible.Keywords: Photovoltaic Grid-connected,MPPT,DSP 目錄引言 11. 方案論證 11.1. 總體介紹 11.2. 光伏電池模擬裝置 11.3. DC-AC逆變橋 11.4. MOSFET驅(qū)動(dòng)電路方案 21.5. 逆變電路的變頻控制方案 22. 理論分析與計(jì)算 22.1. SPWM產(chǎn)生 22.1.1. 規(guī)則采樣法 22.1.2. SPWM 脈沖的計(jì)算公式 32.1.3. SPWM 脈沖計(jì)算公式中的參數(shù)計(jì)算 32.1.4. TMS320F2812 DSP控制器的事件管理單元 42.1.5. 軟件設(shè)計(jì)方法 62.2. MPPT的控制方法與參數(shù)計(jì)算 72.3. 同頻、同相的控制方法和參數(shù)計(jì)算 8

    標(biāo)簽: tms320f2812 光伏 并網(wǎng)發(fā)電 模擬 protel pcb

    上傳時(shí)間: 2021-11-02

    上傳用戶:

  • 1 Seismic response control using electromagnetic

    This paper presents a new type of electromagnetic damper with rotating inertial mass that has been devel oped to control the vibrations of structures subjected to earthquakes. The electromagnetic inertial mass damper (EIMD) consists of a ball screw that converts axial oscillation of the rod end into rotational motion of the internal flflywheel and an electric generator that is turned by the rotation of the inner rod. The EIMD is able to generate a large inertial force created by the rotating flflywheel and a variable damping force devel oped by the electric generator. Device performance tests of reduced-scale and full-scale EIMDs were under taken to verify the basic characteristics of the damper and the validity of the derived theoretical formulae. Shaking table tests of a three-story structure with EIMDs and earthquake response analyses of a building with EIMDs were conducted to demonstrate the seismic response control performance of the EIMD. The EIMD is able to reduce story drifts as well as accelerations and surpasses conventional types of dampers in reducing acceleration responses.

    標(biāo)簽: electromagnetic response Seismic control using

    上傳時(shí)間: 2021-11-04

    上傳用戶:a1293065

  • SC3633

    Wide 2.2V to 6V Input Voltage Range ? 0.20V FB adjustable LED drive current ? Directly drive 9 Series 1W LED at VIN>=6V ? Fixed 800KHz Switching Frequency ? Max. 3A Switching Current Capability ? Up to 92% efficiency ? Excellent line and load regulation ? EN PIN TTL shutdown capability ? internal Optimize Power MOSFET

    標(biāo)簽: sc3633

    上傳時(shí)間: 2021-11-05

    上傳用戶:d1997wayne

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