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A new DSC system that based on the STM32F4 MCU and CPLD is designed in this paper, the STM32F4 mainly takes on the data operation, and the CPLD generate the PWM signals based on the data calculated by the MCU part. the duty cycle of the PWM signal is computed baed on the input Shaft-angle, after calculation and the PWM signal's production, the Full-bridge will be controlled to creat the modulation...
The focus of this paper is information forecast value and the profound impact it has in today's market. When a firm sells its new product through the direct market, the accuracy of marketing forecast information plays important impact on price and advertising spending, and thus expected profits. We develop a price-advertising model to see how the effect of marketing forecast information on the price...
It has been an increasing trend for companies to migrate their businesses onto or publicize themselves on the Internet. Business process reengineering (BPR) is applied to migrate the business processes of the supply chain onto the Web. Such migration may cause some of the processes merged together, minimized or transformed into other processes within a supply chain. Therefore, careful planning for...
With the position of the test equipment has becoming more and more important and limited by the number of computer slots, address and hard resources, the test equipments which use traditional bus such as ISA and PCI cannot satisfy the test requirement. This paper introduces a design of test equipment based on USB. It supports plug-and-play and has high speed transmitting, high reliability and practicability...
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