永磁同步电动机系统具有力矩系数大、力矩波动小以及控制灵活等优点,在许多精密伺服控制系统中得到广泛应用。
Due to the large torque coefficient, small torque ripple and ease of control, permanent magnet synchronous motor (PMSM) system has been widely used in many accurate servo control systems.
同步(Synchronization)——可以通过通信通道在应用程序(比如邮件服务器和关系数据库)之间进行数据同步。
Synchronization — Provides data synchronization with applications like mail servers and relational databases through communication channels.
DB 2EveryplaceSyncServer和ISync提供了一个用于同步关系数据的强大的开箱即用引擎。
DB2 Everyplace sync Server and ISync provide a powerful out-of-the-box engine to synchronize relational data.
该方法包括信号频率实时估计、采样频率同步跟踪和谐波系数误差校正几个要素。
The method consists of real-time estimation of signal frequency, synchronous tracking of sampling frequency and error correction of harmonic coefficients.
同步信号嵌入时域,以提高搜索效率,水印隐藏在离散小波变换域的低频系数中,以达到较好的鲁棒性。
Search efficiency is improved by embedding synchronous signals into time domain. Better robustness is achieved by hiding the watermarking into the low frequency coefficient of DWT domain.
转子绕组交叉连接倍极感应励磁新结构可显著提高倍极感应励磁同步发电机的磁势感应系数。
The configuration of double-pole induced-excitation with cross-connected rotor field coils can obviously increase the mmf transfer coefficient of DPIE synchronous generator.
采用最小二乘辨识方法,得到感应同步器测角误差模型的系数。
The parameters of error model were identified by the least square method.
针对感应同步器测角系统,提出了一种自动检测测角误差、辨识误差模型系数和补偿误差的方法。
A method that measuring angular displacement error, identifying parameters of error model and compensating error automatically was put forward based on inductosyn angular measuring system.
介绍了同步附着系数对汽车制动力分配特性的影响。
The influence of synchronous adhesion coefficient on brake force distribution of motor vehicles is described in this paper.
计算分析U型永磁体转子磁路结构永磁同步电动机的隔磁措施对极间漏磁系数的影响,并得出了一些结论。
The effect of flux-insulation methods of pole-to-pole leakage factor of PMSM with rotor of Us permanent magnet are computed and analyzed, and some conclusions are given.
地表反射率和大气光学特性地面同步测量结果显示:敦煌场地的地面均匀性好,各个通道反射率的变化系数(即相对变化百分比)均小于3%。
The results show that the test site has a very good homogeneity with a variation coefficient of the reflectance in any channel lower than 3%.
提出在多闸坝河流上,利用枯水期断面化学需氧量同步监测数据测算COD综合衰减系数的方法。
A method to calculate the fall coefficient of COD in rivers which have many DAMS was put forward.
根据由李亚普诺夫定理导出的综合阻尼系数的原理,统一定义了同步发电机的动态阻尼力矩系数和动态同步力矩系数。
A unified definition for damping torque coefficient of synchronous machines is proposed in this paper according to the principle of synthetic damping coefficients deduced from the Lyapunov Theorem.
数值模拟表明,这两个时空系统可以准确地通过选择合适的耦合强度和平衡系数是同步的。
Our numerical simulations show that the two spatiotemporal systems can accurately become synchronized by appropriately selecting the coupling strength and the equilibrium coefficient.
通过求取相关系数平均值,避免数据采集不同步引起的计算误差,得到按照发生线路故障可能性大小排列的故障选线序列。
The average correlation coefficient is calculated to remove the errors caused by asynchronous sampling and the faulty line selection list is sorted according to the fault probability of line.
变型拖拉机受生产使用条件及结构设计等因素的影响,载荷分配一般是前轴载荷偏大,同步附着系数小,在制动状态下易出现后轮先抱死而发生后轴侧滑,制动性能降低。
With the limit of the use condition and structure of derivate tractor, its front load distribution is more than that of the rear and synchronism adhesion coefficient is small.
结果表明:消化道的重量随体重同步变化,回归分析表明二者的幂回归相关系数最高。
It was found that the relations between the weight of stomach, intestines, pancreas and body weight are positive correlation and correlation coefficient of power regression is highest.
文章在分析数字音频水印同步性的基础上提出了一种结合音频倒频谱系数和以音频能量特征决定数字水印嵌入位置的数字水印方法。
This paper gives a new method for digital audio watermarking which uses audio cepstrum domain and energy features to decide the location of embed frames.
由于具有恒李雅普诺夫指数的类Colpitts混沌系统存在特殊的常数项参数与系数参数,因此,整个同步体系的状态变量具有幅度与相位的调节灵活性。
There exists adjustable flexibility on amplitude and phase of state variables owing to the special parameters, i. e. constant term and coefficient of CCSCLE.
对一个仅含有直流输电线路的系统,采用复转矩系数——测试信号法,对其次同步振荡特性进行了分析。
Using the test signal method, a detailed analysis of subsynchronous oscillation for a HVDC system is performed.
对一个仅含有直流输电线路的系统,采用复转矩系数——测试信号法,对其次同步振荡特性进行了分析。
Using the test signal method, a detailed analysis of subsynchronous oscillation for a HVDC system is performed.
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