Optimal Control of Discrete and Continuous Time Maintenance Systems with Variable Service Rates

Wayne Winston
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Wayne Winston: Indiana University, Bloomington, Indiana

Operations Research, 1977, vol. 25, issue 2, 259-268

Abstract: A maintenance system consists of o finite number of machines and a single-server repair facility that may be operated at several rates. Machines are subject to failure and machines that fail are sent to the repair facility. Under the assumption that costs depend on the repair rate and lost production, we derive conditions that ensure that, for a discrete time maintenance system, the optimal repair rate is a non-increasing function of the number of machines in good condition. By considering a continuous time maintenance system as a limit of a sequence of discrete time maintenance systems, we derive analogous conditions that ensure that the optimal repair rate for the continuous time maintenance system is a non-increasing function of the number of machines in good condition.

Date: 1977
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