共查询到18条相似文献,搜索用时 156 毫秒
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基于dSPACE平台的电能计量实时仿真系统 总被引:1,自引:0,他引:1
在发展智能电网的新形势下,急需研究分布式能源、储能装置接入电力系统后对电能计量的影响,充电站和微网等新型负荷的电能计量,以及无功电能计量、冲击负荷计量、谐波线损等新问题.提出基于dSPACE平台构建电能计量实时仿真系统,进行电能表校验、电能计量算法优化设计、误差分析比较、电能质量分析、谐波分析、不同负荷对电能计量的影响和特种谐波源仿真等研究.介绍了电能计量实时仿真系统的基本思想和组成结构,设计了相应的硬件和软件,设计了高精度的全数字锁相环实现对电网频率的精密跟踪锁定,以减小非整周期采样带来的谐波分析误差,其锁定精度达到0.0002 Hz以上.计量仿真实验证明了用该系统开展高级电能计量研究的可行性. 相似文献
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针对西部和海上油气田开采过程中客观条件的限制,设计了一种两相流计量系统二次仪表,代替计算机进行数据采集和处理,实现在线实时计量.该系统选用DSP作为核心处理器,数据采集采用双缓冲的DMA传输,并利用在系统编程技术和DSP自举引导实现了系统的独立运行.实验证明该仪表具有性能高、功耗低、体积小等优点. 相似文献
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多传感器信息融合技术在动态油量计量中的应用 总被引:1,自引:0,他引:1
为了比较精确地计量原油储罐的动态油量,基于多传感器信息融合技术完成原油储罐油量计量系统的设计方案,建立了在线动态计量油量的数学模型.应用多传感器检测系统数据融合算法,实现原油储罐动态油量的实时计量.现场应用结果表明,提出的原油储罐检测系统方案和动态油量计量模型具有较高的精度和可靠性,能满足生产过程的要求,该方案可用于油田联合站和油库罐区动态油量的计量,并可应用于油田联合站自动化盘库系统. 相似文献
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为了测量采用锂离子动力电池组的电动汽车的剩余电量并估计其续驶里程,设计了一套电池SOC(荷电状态)的车载测量系统.该测量系统基于开路电压法与安时计量法,实现了电压、电流的实时采集,根据测量出的SOC可换算成剩余续驶里程并在液晶仪表上实时显示.车载试验表明,相比其他电量计量系统,该系统实用可靠. 相似文献
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基于B/S的工厂能源计量信息系统设计研究 总被引:3,自引:1,他引:2
该文根据某工厂能源计量要求,设计基于B/S的能源计量信息系统,重点分析了该系统的设计思想及实现方法,并就工程实现中遇到的问题进行分析和讨论。该系统涉及数据采集、SCADA系统、实时数据库结构与数据流的管理等,以满足系统实时性要求。 相似文献
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CCD技术在工业现场钢管长度测量中的应用 总被引:3,自引:0,他引:3
本文介绍了一种应用于工业现场的钢管长度自动测量系统,该系统采用CCD摄像头进行图像捕捉,通过软件进行图像处理和长度计算,达到较高的精度。系统构成简单,安装方便,在标定方法上别具一格,减小了测量误差,提高了测量精度。 相似文献
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Near Optimal Measuring Sequence Planning and Collision-Free Path Planning with a Dynamic Programming Method 总被引:2,自引:1,他引:1
Z.-C. Lin J.-J. Chow 《The International Journal of Advanced Manufacturing Technology》2001,18(1):29-43
A near optimal measuring sequence was introduced to complete the entire measuring process and reduce the measuring time of
a coordinate measuring machine (CMM) for a workpiece whose shape consists of several geometric elements. The number and positions
of the measuring points of the workpiece were planned by a CAD/CAM software system. A weight matrix of the number of probe
spins and the concept of the angle difference matrix were proposed for the measured feature face using the assumptions in
this paper, for the purpose of dynamic programming. First, a dynamic programming method was carried out to plan the optimal
measuring sequence of the feature face of the geometric elements. Then, a measuring point distance difference matrix was established
for an individual feature face. Then, a dynamic programming method was used to plan the measuring path of the measuring points
for solving the approximated shortest path. A collision-free interference inspection method established in this paper was
also used to include a collision-free path for paths with interference. The entire measuring path planning was thus completed.
With the help of CAD/CAM software and the powerful computation and analytical capability of computers, the system was able
to achieve an appropriate measuring sequence in a short time. 相似文献
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所研制的中药智能配药系统中,按处方每味颗粒成药进行精确快速秤量是系统最关键的问题。本文提出了用正态分布理论来研究中药颗粒几何形态特性(粒度、颗粒群粒度分布)和中药颗粒群聚集特性(填充率、空隙率和填充结构)对秤量装置下药量的影响。 相似文献
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关节臂坐标测量机是一种新型非正交系坐标测量设备,相比传统的三坐标测量机,具有体积小、重量轻、灵活、轻便等特点,现已在机械制造、电子、汽车和航空航天等领域得到应用,具有巨大的应用前景.在前期工作的基础上设计出一种六自由度关节臂坐标测量机,该关节臂坐标测量机关节零件采用航空铝合金材料、连杆采用碳纤维材料,因而具有强度高、重量轻的特点,内置式平衡机构可减轻操作者劳动强度,精密的关节角度传感器保证了测量机的高精度.基于Open CASCADE和VC++6.0平台开发了关节臂坐标测量机的测量软件和标定软件,并进行了整机的联机调试,验证了系统的可靠性. 相似文献
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再生料沥青混凝土搅拌机采用以要求喷洒的沥青量的闭环控制系统,提高石料重量和喷洒沥青量的测量精确度,采用合适的控制方法,才能保证油石比的控制达到规定的指标。本文介绍了沥青量的测量特点,进行了误差分析,实现沥青重量测量与控制。 相似文献
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双秤台超限检测和计重收费控制系统,该系统采用独创的秤台结构,运用恰当的数理模型,技术先进,车型判断准确可靠,系统计量精度高,为公路的超限管理及计重收费提供了可靠的计量手段,减少了公路收费的贸易纠纷,提高了工作效率,带来了明显的社会经济效益。 相似文献
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This paper concerns the development of an entirely new sensor for measuring forces using a gyroscope (called gyroscopic force measuring system, or simply GFMS) for measuring a force vectorially. In a previous paper [S. Kurosu, M. Adachi, K. Kamimura, Dynamical characteristics of gyroscopic weight measuring device, ASME J. Dynamic System Measurement, and Control 119 (1997) 346–350], the dynamics of the GFMS for measuring a vertical force were investigated and the principal characteristics were examined theoretically and experimentally. The results of this work are directly applicable to measurement of a vectorial force in three-dimensional space. The principle and the dynamical characteristics of the GFMS for measuring a force vector are analyzed theoretically. To measure a force vectorially, two auxiliary turntables (driven by servomechanisms) are installed around the gyroscope, in which turntable outputs are required to follow some angles of incidence of a force vector. Some unfavorable errors caused by various factors and disturbances are analyzed. Two types of compensation methods are proposed as a device both for accurate force measurement and disturbance suppression. The feasibility of the proposed GFMS is confirmed by numerical simulations. 相似文献