PPK, also known as the Process Performance Index, is a metric used to evaluate the capability of a process to meet specified requirements. It provides a quantitative measure of how well the process is performing in terms of quality and consistency.

Hint: Use this calculator to compute the process performance or capability indices (Pp, Ppk or Cp, Cpk) for continuous data having both Upper and Lower Specification Limits. Select whether you have overall or within standard deviation. Overall will give Pp, Ppk. Within will give Cp, Cpk.

2024年10月3日 · By factoring in the mean and variation of the process, PPK evaluates how well the process centers around the target and the extent of variation present. A PPK value above 1 indicates a process that meets the required standards efficiently, while a value below 1 suggests deficiencies in meeting those standards.

2024年10月3日 · PPK（过程性能指数） 是质量控制中一个重要的指标，代表了过程满足指定标准的能力。 它通过将收集到的数据（如测量值或观察值）与设定的目标或规格限进行比较，来量化过程的一致性和质量。 通过考虑过程的均值和变异，PPK 评估了过程在目标周围的集中程度以及存在的变异程度。 PPK 值大于 1 表示过程能够有效地满足所需标准，而小于 1 的值则表示在满足这些标准方面存在缺陷。 PPK 越高，过程能力和效率就越高。 历史背景. PPK 及相关的指标， …

* ppk 通常用来与cp及Cpk对比，度量和确认内改进的优先次序。 适用环境. ppk： 过程性能指数，表示的是过程在一段时间内的表现。 1 . 输出满足规格要求+预测图形+长期不稳定过程（不要求过程稳定）； 2 . 小批生产（试产）的过程性能评价，要求Ppk>1.67； 3 . 用于实时过程性能研究和初始过程能力评估。 Cpk： 过程能力指数，表示过程本身的能力，一种理想的状态下的指数。 1 . 过程稳定+足够历史数据/初始数据（More than 100个体数据&25子组； 2 . 大批量生产后的生 …

The Process Performance Calculator is a numerical tool designed to assess the capability of a process through the calculation of PP and PPK indices. By inputting key parameters such as Upper and Lower Specification Limits, Standard Deviation, and Mean, the calculator evaluates how consistently a process operates within specification limits.

使用过程性能指数Pp与Ppk，可以测量过程能力。 过程性能指数可以衡量过程产生的结果是否满足客户需求。 使用这个计算器，以及已知的LSL、USL、SD和平均值计算出Pp与Ppk。

Tutorial on how to calculate Pp and Ppk with clear example, and definition online.

Cpk is calculated by using the minimum of CPL and CPU. Ppk is calculated by using the minimum of PPL and PPU. After the standard deviation has been calculated, the process capability Cpk and the process performance Ppk can be calculated. Therefore, with DATAtab it is very easy to calculate the cpk value directly online.

What are Process Capability Indices? Cp, Pp, Cpk, and Ppk are capability and performance indicators for your process. Is a process capable? Is the process acceptable? How is the process actually behaving vs. how it theoretically could be behaving?