The overall characteristic is more convenient for maneuvering measures of source, network and demand sides to control and manage frequency quality in the whole power system.
频率作为电能质量考核的重要指标之一 ,与电压、谐波的局部特性不同 ,它更多地呈现系统全局特性 ,更有利于在系统范围内调动电源侧、电网中和需求侧各方面的调控措施进行频率质量控制及管理。
A simple tension calculation algorithm as well as a ratio index,a quality index,and a global quality index is proposed to measure the size and shape of the workspace of wire-driven parallel kinematic manipulators.
采用一种简单的绳拉力计算算法,提出比例系数、质量系数和全局质量系数来衡量工作空间的大小和形状。
To improve the effectiveness of the elevator traction drive,three crucial parameters including car quality coefficient,accelerated speed,and balance coefficient that influence traction drive were analyzed and optimized.
为了提高电梯曳引传动的有效性,对影响曳引能力的3个主要参数轿厢质量系数、运动加速度和平衡系数进行分析。
On the basis of using quality coefficient to quantify the quality,the theory of value engineering(VE) is used to found the time-cost-quality optimization model.
针对工程项目工期、费用、质量的最优控制问题,在用质量系数对质量进行量化的基础上,利用价值工程的理论,建立了工期——费用——质量综合优化模型,采用微粒群算法通过MATLAB编程求得工期、费用、质量的目标值,为项目优化控制提供了参考依据。
A conception of mass coefficient was put forward to simplify cool consumption calculations of exterior protected construction.
通过对环境试验箱围护结构由高温降至低温时的非稳态传热过程建立物理模型和数学模型,并使用有限容积法及TDMA进行围护结构传热数值计算来分析3种不同降温工况下的围护结构的传热特性,提出了围护结构质量系数概念,用以简化计算其降温时的耗冷量。
The mass coefficient was brought forward to assess the activity factor of original coal gangue.
引入质量系数法评定原状煤矸石经热活化后辅助胶凝性能的大小。
The concep- tion of mass coefficient was introduced to simplify heating consumption calculations of exterior protection construction.
对高低温试验箱围护结构由低温升至高温时的非稳态传热建立了数学模型,使用TDMA方法进行了围护结构传热数值计算,对3种不同升温工况下的围护结构进行了传热特性分析,使用围护结构质量系数概念来简化计算其在升温时的耗热量。
According to the current situation of transmission and distribution sectors in China, and based on the existing research results and the prevailing tariff regulation methods in the world, this paper proposes a refined price cap regulation model which takes the environment-related factor and the power quality factor into consideration.
依据输配电企业的现状,借鉴已有的研究成果及目前国际上的电力市场价格管制方法,提出了同时考虑环境因子和电能质量系数的改进价格上限监管模型,并重点讨论了改进后的价格上限监管模型中电能质量系数的确定问题。
DSM BASED FREQUENCY QUALITY CONTROL OF POWER SYSTEMS
基于需求侧管理的频率质量控制探讨
Quality, Complexity, and Bit-rate Control for Video Coding;
视频编码中质量、复杂度和码率控制
Application of novel method of digital to frequency conversion in Coriolis mass flowmeter
新型数字-频率变换在科氏质量流量计中的应用
Measuring methods of power output for high frequency dielectric heating installatio
GB/T14809-1993高频介质加热设备输出功率的测量方法
Quality of electric energy supply--Permissible deviation of frequency for power system
GB/T15945-1995电能质量电力系统频率允许偏差
The vibration frequency is given by (4.25), except that m is replaced by the reduced mass.
振动频率在(4.25)中给出,只是m用折合质量代替。
Study on Additional Water Mass s Influence in the Natural Frequency of Ship Hull s Overall Vibration;
附加水质量对船体总振动固有频率影响的研究
Complexity, Rate Control and Quality Assessment in H.264;
H.264视频编码的复杂度、码率控制与质量评价
Preprocessing Techniques for Increasing Video Quality and Coding Efficiency
提高视频编码效率和质量的前处理技术研究
CALCULATION AND ANALYSIS ON NATURAL FREQUENCY OF A MOVING MASS AND BEAM’S COUPLED SYSTEM
移动质量与梁耦合系统固有频率的计算与分析
Exact wave function of the coupled harmonic oscillator with time-dependent mass and frequency
质量和频率均含时的耦合谐振子的严格波函数
Video conference system for enhancing quality of target region under low bit rate
低码率下增强目标区域质量的视频会议系统
Influence of Harmonic Generation on the Beam Quality and Focal Characterization of High-Power Laser Beams;
频率转换对高功率激光光束质量和聚焦特性的影响
Protons are capable of absorbing energy if exposed to electromagnetic energy at the frequency of oscillation.
如用与质子振动频率相同的电磁波激发它时,质子就能够吸收能量。
New signal processing method with negative frequency contribution for Coriolis mass flowmeter
计及负频率影响的科里奥利质量流量计信号处理方法
Diagonalization of Hamiltonian of coupled system of oscillators at different mass and frequency
不同质量和频率的耦合谐振子体系哈密顿量的对角化
Present Status and Prospects of Time-varying Frequency Tracking Methods for Coriolis Mass Flowmeter
科里奧利质量流量计信号频率跟踪方法研究现状与展望
preferred frequencies for acoustical measurement
声学测量的最佳频率
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