$$\overline{X}$$ chart, CRL chart, Synthetic chart, Average time to signal,

No abstract

Gadre and Rattihalli [5] have introduced the Modified Group Runs (MGR) control chart to identify the increases in fraction non-conforming and to detect shifts in the process mean. The MGR chart reduces the out-of-control average time-to-signal (ATS), as compared with most of the well-known control charts. In this article, we develop the Side Sensitive Modified Group Runs (SSMGR) chart to detect shifts in the process mean. With the help of numerical examples, it is illustrated that the SSMGR chart performs better than the Shewhart's X chart, the synthetic chart [12], the Group Runs chart [4], the Side Sensitive Group Runs chart [6], as well as the MGR chart [5]. In some situations it is also superior to the Cumulative Sum chart p9] and the exponentially weighed moving average chart [10]. In the steady state also, its performance is better than the above charts.average time-to-signal, CRL chart, EWMA chart, GR chart, MGR chart, SSGR chart, steady-state ATS, synthetic chart,

No abstract

In this article following the approach of Lorenzen and Vance, an economic design of moving average control chart is developed for ceased as well for continued production during control actions. The performance of the control charts is compared for the two production modes by means of the loss cost per time unit. The ceased production mode yields about 30% saving in the loss cost when compared to that of the continued production. The example given provides some insight to the sensitivity of the model. Brought to you by | University of Georgia Libraries Authenticated Download Date | 5/26/15 6:48 PM[14] Yu, F.J. and Chen, Y.S. (2005): Economic design of moving average control charts.