物流系統是指在一定的時間和空間里，由所需輸送的物料和包括有關設備、輸送工具、倉儲設備、人員以及通信聯系等若干相互制約的動態要素構成的具有特定功能的有機整體。隨著計算機科學和自動化技術的發展，物流管理系統也從簡單的方式迅速向自動化管理演變，其主要標志是自動物流設備，如自動導引車(AGV-Automated guided vehicle)、自動存儲、提取系統(AS/RS-Automated storage/retrieve system)、空中單軌自動車(SKY-RAV-Rail automated vehicle)、堆垛機(Stacker crane)等，及物流計算機管理與控制系統的出現。
標簽： 物流系統
上傳時間： 2014-01-08
上傳用戶：zhaiyanzhong
NEA1803 51單片機與12864 由串口中斷收取數據 顯示經度緯度 高度 速度 時間 使用衛星數-GPS development NEA1803 51 SCM and 12864 collected by the serial interrupt data show a high degree of longitude latitude speed time-use satellite
標簽： 12864 1803 development NEA
上傳時間： 2017-08-22
上傳用戶：lepoke
Software-defined radios (SDRs) have been around for more than a decade. The first complete Global Positioning System (GPS) implementation was described by Dennis Akos in 1997. Since then several research groups have presented their contributions.We therefore find it timely to publish an up-to-date text on the subject and at the same time include Galileo, the forthcoming European satellitebased navigation system. Both GPS and Galileo belong to the category of Global Navigation Satellite Systems (GNSS)
標簽： Software-defined complete Global radios
上傳時間： 2013-12-16
上傳用戶：xauthu
Yet another mp3 player, but this time using SVGALib under Linux. The idea was to use a 320x240 display which can be used in a vehicle. I wrote this quite a few years ago, before mp3 players were so cheap. It uses mpg123 for the mp3 decoding.
標簽： SVGALib 320x240 another player
上傳時間： 2013-12-26
上傳用戶：zmy123
The STi7105 uses state of the art process technology to provide an ultra low-cost, fully featured HD AVC decoder IC. It is a highly integrated system-on-chip suitable for STB markets across all networks (cable/satellite/DTT/x- DSL/IP) worldwide
標簽： technology low-cost featured process
上傳時間： 2013-12-22
上傳用戶：時代電子小智
The TJA1040 is an advanced high speed CAN transceiver for use in automotive and general industrial applications. It supports the differential bus signal representation described in the international standard for in-vehicle high speed CAN applications (ISO11898). CAN (Controller Area Network) is the standard protocol for serial in-vehicle bus communication, particularly for Engine Management and Body Multiplexing. The TJA1040 provides a Standby mode, as known from its functional predecessors PCA82C250 and PCA82C251, but with significantly reduced power consumption. Besides the excellent low-power behavior the TJA1040 offers several valuable system improvements. Highlights are the absolute passive bus behavior if the device is unpowered as well as the excellent EMC performance.
標簽： CAN
上傳時間： 2015-03-23
上傳用戶：Yuan Lo
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.
標簽： Testing and classifying vehicle dispatching rules in three real-world settings
上傳時間： 2016-04-01
上傳用戶：五塊錢的油條
電動舵機（EMA）由于具有結構簡單、重量輕、負載特性好和可靠性高等優點，因而在 無人駕駛飛機（UAV）、導彈、航天器等飛行器中得到越來越廣泛的應用。 傳統 PID 控制以其實時性好、易于實現等特點廣泛應用于控制系統，只要正確設定參 數，PID 控制器便可實現其作用，但由于舵機系統存在著非線性、時變性等不確定因素，此 時，PID 的控制效果將難于達到預期的目標。而模糊控制對控制對象的非線性、時變性等具 有較強的適應能力，其靈活性和魯棒性較好，并且控制簡單，在電機控制領域應用非常廣 泛。但在模糊控制的系統中很難完全消除穩態誤差，一般情況下，控制精度不太理想。 針對上述兩種控制器的特點，為了提高舵機位置伺服系統的控制性能，本文設計了一 種模糊自適應 PID 控制器，兼顧了兩種控制方法的優點，通過模糊規則進行推理和決策， 在線整定 PID 控制器的三個參數，實驗結果表明，該控制器結構簡單，效果良好。
上傳時間： 2016-04-27
上傳用戶：547453159
基于ARM平臺控制和圖像處理的設計方案（參考），可用于視頻對話、攝像、采集等領域
上傳時間： 2017-03-12
上傳用戶：klum
This book was conceived in such a special way. From our experience, and despite the increasing interest that we perceived amongst the research community in HAPS, there was not any book in the market entirely devoted to HAPS. We could only find some satellite communications books including only fragments related to HAPS, covering the ‘generalities’. A need for a reference book which could highlight state- of-the-art HAPS-related topics was therefore envisaged. Moreover, most of the information related to HAPS could only be found in technical reports, official recommendations, conference proceedings and journal papers.
上傳時間： 2020-05-27
上傳用戶：shancjb
