Force Spectrum(力谱)研究综述
Force Spectrum 力谱 - Then both the parameters of the force spectrum and the system properties are identified using the output data. [1] To solve this problem, this paper presents a spectrum, namely a control-force spectrum, to estimate the maximum control force while considering the combination of PBI and ASC. [2] We first explore the viability of force disambiguation to evaluate the force division within the force spectrum. [3]然后使用输出数据识别力谱参数和系统属性。 [1] 为了解决这个问题，本文提出了一个谱，即控制力谱，用于估计最大控制力，同时考虑 PBI 和 ASC 的组合。 [2] 我们首先探索力消歧的可行性，以评估力谱内的力划分。 [3]
Cutting Force Spectrum 切削力谱
The cutting force spectrum of the CNC lathe is the basic data for the reliability design, reliability test and reliability evaluation of the CNC lathe and its components. [1] Then, the proposed formulations are applied to identify both radial and axial depths of cut exploiting the normalized cutting force spectrum. [2] The dynamic cutting force signal of CNC machine tool under constant speed cutting condition was reconstructed and extrapolated using the proposed method, and the dynamic cutting force spectrum of CNC machine tool was compiled. [3] Correctly establishing its distribution is an important prerequisite for the preparation of CNC machine tool cutting force spectrum and the reliability design of CNC machine tools. [4]数控车床切削力谱是数控车床及其零部件可靠性设计、可靠性试验和可靠性评价的基础数据。 [1] 然后，应用所提出的公式来识别利用归一化切削力谱的径向和轴向切削深度。 [2] 采用该方法对数控机床恒速切削条件下的动态切削力信号进行重构和外推，编制数控机床动态切削力谱。 [3] 正确建立其分布是编制数控机床切削力谱和数控机床可靠性设计的重要前提。 [4]
Excitation Force Spectrum
The excitation force spectrum is controlled by a variable air gap over the circumference between device and blade. [1] It is shown that the mean estimated frequency of the EKF and FLL, converges, respectively, to the mean centroid frequency and energy frequency, of the excitation force spectrum. [2] When using a tapping machine, the excitation force spectrum generated – necessary to achieving experimental frequency force to sound response functions – is unknown. [3]激振力谱由装置和叶片之间圆周上的可变气隙控制。 [1] 结果表明，EKF 和 FLL 的平均估计频率分别收敛到激振力谱的平均质心频率和能量频率。 [2] 使用攻丝机时，产生的激振力谱——实现实验频率力到声音响应函数所必需的——是未知的。 [3]
Lift Force Spectrum
Both oscillation modes are characterized by higher harmonics in the lift force spectrum, with the third harmonic being very pronounced, while even harmonics are present for the case of clockwise mode, resulting from a wake transition to a “S + P” mode. [1] The cross-wind excitation of chimneys by vortex shedding is calculated in the CICIND model applying a negative aerodynamic damping to incorporate the motion induced forces, and a bandwidth factor to account for the reduction of the lift force spectrum caused by wind turbulence. [2]两种振荡模式都以升力谱中的高次谐波为特征，三次谐波非常明显，而顺时针模式的情况下存在偶次谐波，这是由于尾流过渡到“S + P”模式的结果。 [1] 通过涡旋脱落对烟囱的侧风激励在 CICIND 模型中计算，该模型应用负气动阻尼来合并运动引起的力，并使用带宽因子来解释由风湍流引起的升力谱的减少。 [2]