In physics and engineering, the quality factor or Q factor is a dimensionless parameter that describes how underdamped an oscillator or resonator is. It is defined as the ratio of the initial energy stored in the resonator to the energy lost in one radian of the cycle of oscillation. [ 1 ]

品質因子或q因子是物理及工程中的無因次參數，是表示振子 阻尼性質的物理量 [1] ，也可表示振子的共振頻率相對於頻寬的大小 [2] ， 高q因子表示振子能量損失的速率較慢，振動可持續較長的時間，例如一個單擺在空氣中運動，其q因子較高，而在油中運動的 ...

品质因子或q因子是物理及工程中的无量纲参数，是表示振子阻尼性质的物理量，也可表示振子的共振频率相对于带宽的大小， 高q因子表示振子能量损失的速率较慢，振动可持续较长的时间，例如一个单摆在空气中运动，其q因子较高，而在油中运动的单摆q因子 ...

2020年10月4日 · Q factor (also known as Quality Factor or Q-factor) is defined as a dimensionless parameter that describes the underdamped condition of an oscillator or resonator. The quality factor measures the performance of a coil, a capacitor, or an inductor in terms of its losses and resonator bandwidth.

品质因子或q因子是物理及工程中的無因次參數，是表示振子 阻尼性质的物理量 [1] ，也可表示振子的共振頻率相對於頻寬的大小 [2] ， 高q因子表示振子能量損失的速率較慢，振動可持續較長的時間，例如一個單擺在空氣中運動，其q因子較高，而在油中運動的單 ...

Q 值是为了更好的研究电路谐振时的性质而引入的一个物理量，Q 是 Quality factor 的缩写，翻译成品质因数。 它用来描述谐振电路的质量或其谐振能力。 揭示了谐振电路的通频带和选择性之间相矛盾的关系；Q 值越大，通…

2022年9月3日 · 在电子学和信号处理中，Q 值（Quality Factor）是衡量一个系统的“尖锐度”或“选择性”的一个指标。 简单来说，Q 值 反映了滤波器在其特定频率（如截止频率）附近的响应特性。

The Q factor (quality factor) of a resonator is a measure of the strength of the damping of its oscillations, or for the relative linewidth. The term was originally developed for electronic circuits, e.g. LC circuits, and for microwave cavities , also for mechanical resonators, but later also became common in the context of optical resonators .

In many, many situations that involve oscillating systems, a common factor pops up. Usually denoted by the letter Q, and sometimes called the quality factor, this quantity has several different meanings. We'll only discuss a few of them here. It's not only in mechanical systems, such as pendula or shock absorbers, that this "Q" factor appears.

2024年12月9日 · Definition of the Q-factor consists of a ratio of the stored energy and the dissipated power at resonant frequency. Distinction should be made between the unloaded, loaded, and external Q . The article provides some frequently used equations related to the application of Q -factors.