The design of real-time distributed arrival time control system in a cell manufacturing
In this study a real-time distributed arrival time control system in a cell manufacturing system for JIT-oriented production environment is designed. The distributed arrival time control (DATC) system is introduced to improve the scalability and practicality of the assembly cells manufacturing systems in heterarchical manufacturing systems. The simulation experiments are implemented to present the advantage of this new control system under JIT environment. The results indicate that DATC used in assembly cells was effective and can handle a wide range of variability with little change in mean squared deviation. The research also shows that distributed arrival time control system can provide the stability of the scheduling of manufacturing system.
This paper addresses the problem of channel and propagation delay estimation in asynchronous DS/CDMA systems. We consider the uplink connection in DS/CDMA with long spreading codes. The MIMO stochastic gradient algorithm proposed in [6] is estimating a linear combination of the channel impulse responses and the propagation delays. This estimate suffices for the equalization purposes. The propagation delays are estimated with a simple matching scheme.