The Optimum Assignment of Repairmen in Serving Automatic Machines : Part 4. Regular and Irregular Patrolling
Shizuo Senju · Transactions of the Japan Society of Mechanical Engineers · 1958
When an operative takes charge of several machines which require his attention at random intervals, there are two types of patrolling : one of them is the "regular" one, whereby he tends machines according to a fixed pattern, and the other is the "irregular" one where no difinite order of attention is specified. The walking time of the operative and the productivity of machines or the duration of wrong state of machines vary with the method of patrolling. In this paper, the walking time of an operative, the time interval of his patrolling, the average productivity of machines and the average duration of wrong state of machines are compared from the probability's point of view with respect to the two types of an operative's patrolling.