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A novel precise control method of clamping force is proposed for a new type of braking device, which is composed of a motor servo system and a mechanical transmission. Because of machining error, assembling error and friction force of mechanical transmission, a great deal of error exists in force transfer, which makes the champing force of the electromechanical braking device to be uncontrollable...
Vegetation is one of the most important parts of the city's ecological system, which has a great significance to improve the quality of city's environment and citizens' life quality. In this study the TM images of 1993, 1998, 2002 and 2005 are used as data resources, eCognition software and the method of object-oriented classification are used to extract vegetation information. And on this basis,...
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