ts16949introduction-資料下載頁
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【正文】 ol: ?Calculate trial control limit by process date ?Identify special cause variation and take action Step 3. Analysis and improvement: ?Identify size of mon cause error and take action to reduce the variation. Repeat the three steps to continual improving. 2023/06/23 Lijia Process Capability is another important concept in SPC. Process capability examines the variability in process characteristics whether the process is capable of producing products which conforms to specifications ISO / TS 16949:2023 SPC Statistical Process Control Capability Index: Short time ability and Long time ability 2023/06/23 Lijia ISO / TS 16949:2023 MSA Measurement System Analysis Purpose: Qualify a measurement system for use by quantifying its accuracy, precision, and stability. If measurements are used to guide decisions, then it follows logically that the more error there is in the measurements, the more error there will be in the decisions based on those measurements. 2023/06/23 Lijia ISO / TS 16949:2023 MSA Measurement System Analysis Stability refers to the capacity of a measurement system to produce the same values over time when measuring the same sample. As with statistical process control charts, stability means the absence of Special Cause Variation, leaving only Common Cause Variation (random variation). Stability Time1 Time2 2023/06/23 Lijia ISO / TS 16949:2023 MSA Measurement System Analysis Bias, also referred to as Accuracy, is a measure of the distance between the average value of the measurements and the True or Actual value of the sample or part. See the illustration below for further explanation. Benchmark Practical average Bias 2023/06/23 Lijia ISO / TS 16949:2023 MSA Measurement System Analysis Linearity is a measure of the consistency of Bias over the range of the measurement device. For example, if a bathroom scale is under by pound when measuring a 150 pound person, but is off by pounds when measuring a 200 pound person, the scale Bias is nonlinear in the sense that the degree of Bias changes over the range of use. Range Benchmark Practical average Benchmark 2023/06/23 Lijia ISO / TS 16949:2023 MSA Measurement System Analysis Repeatability assesses whether the same appraiser can measure the same part/sample multiple times with the same measurement device and get the same value. Repeatability 2023/06/23 Lijia ISO / TS 16949:2023 MSA Measurement System Analysis Reproducibility assesses whether different appraisers can measure the same part/sample with the same measurement device and get the same value. Reproducibility Operator C Operator B Operator A 2023/06/23 Lijia Thanks for your time! 2023/06/23 Lijia 謝謝觀看 /歡迎下載 BY FAITH I MEAN A VISION OF GOOD ONE CHERISHES AND THE ENTHUSIASM THAT PUSHES ONE TO SEEK ITS FULFILLMENT REGARDLESS OF OBSTACLES. BY FAITH I BY FAITH
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