Open AccessProcess capability control procedure for electrical machines by using a six‐sigma process for achieving six‐sigma quality level
Author(s) -
Jun ChaSeung,
Kwon ByungIl
Publication year - 2017
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
ISSN - 1751-8679
DOI - 10.1049/iet-epa.2017.0011
Subject(s) - six sigma , design for six sigma , sigma , rotor (electric) , process (computing) , context (archaeology) , process capability , quality (philosophy) , torque , computer science , engineering , reliability engineering , control theory (sociology) , control (management) , work in process , manufacturing engineering , mechanical engineering , artificial intelligence , physics , paleontology , operations management , quantum mechanics , lean manufacturing , biology , operating system , thermodynamics
An overall six‐sigma process (SSP) that includes a novel process capability control (PCC) procedure is presented for satisfying a six‐sigma level for a Z ‐value as well as a mean value of target performance. An example of this process is present for the efficiency and torque ripple in a spoke‐type permanent magnet motor considering the manufacturing tolerances of five rotor dimensions. In this context, six‐sigma means that the probability of failure of the product or system is 0.00034%. A novel SSP with a PCC procedure is suggested for designing electrical machines. In this procedure, three possible PCC methods were determined based on the definition of the Z ‐value. Next, each method was carried out to achieve the target Z ‐value and to illustrate the advantages and possible issues associated with each method. Finally, the authors showed that the suggested PCC procedure effectively achieves the target Z ‐value of the motor and can be widely used for the design of electrical machines.