滚筒洗衣机能效评价与用户使用习惯关系的探讨

本文主要是从用户使用的角度出发,对美国、欧盟和我国的滚筒洗衣机能效实施措施分别进行了介绍和探讨。结合国内洗衣机用户的使用习惯,就目前洗衣机能效国标GB 12021.4-2004《电动洗衣机耗电量限定值及能源效率等级》新版本的修订提出能效实施措施方面的建议和可行性分析。

CAN总线使用率和故障侦测系统设计研究

本文实现了一种通过采集CAN总线物理层通信波形,不需要复杂的CAN通信协议解码过程,分析CAN总线故障和使用率的侦测系统,并输出相关故障预警信息。通过采样、识别和分析总线数据帧信息,测量总线使用率并进行一系列比较,输出总线故障预警信号,实时监测CAN总线的工作状态和故障侦测。具体内容包含系统实现原理和方案,并详细讨论CAN总线数据帧提取、使用率测量和异常监测方法。实际运行效果表明:该系统结构合理、性能稳定、准确性高,具有广阔的应用前景。

Variation of Dynamic Wheel-Rail Forces in High Speed Trains

In this paper, variation of wheel-rail forces in dynamic train-track interaction at high speed track is investigated. To analyze track and train dynamically, a model of standard fleet and train is provided. To model the loads of track and train realistically, ADAMS / RAIL software is used. In modeling of a car by ADAMS / RAIL, an ERRI standard model of the car on a high speed track with corrugated rail （1 mm amplitude, 1 meter wavelength and total length of 5 meters） is provided. To verify the equations of dynamic load factors, offered in some codes, the software outputs and equations are compared to judge. The results of the dynamic analysis of the train shows that the equations offered in ORE manual are more applicable than those offered in the other codes.