Imperfect Preventive Maintenance Model Based On Limitation Of Reliability With The Restoration Factor

The imperfect preventive maintenance is a state between "as good as new" and not "as good as new", which is not a kind of traditional maintenance model, which depending on the maintenance experience and qualitative judgment. It always used to do quantitative description and analysis of the maintenance work, which is scientific to guide the practice of enterprise equipment maintenance work.Model1:By taking into account that the hybrid hazard rate based on the concept of age reduction factor and improvement factor for the repairable system consisting of one component. In order to determine the best strategy for flexible cycle preventive maintenance, minimizing the each cost of system, in the same time, limiting the reliability and performance period, then to solve the optimal flexible cycle.Model2:In the actual production, the repair component after repair is not "as good as new", considering the repair equipment of the actual age or failure rate may return to a specific value. In order to determine the best strategy for preventive maintenance, minimizing the total production cost of manufacture equipment and limiting the reliability. At last, calculating the equipment of the best maintenance times N*and interval Tp*Model3:Proposed to build a new preventive maintenance model for describing the system improvement. In order to determine the best strategy for preventive maintenance, minimizing maintenance cost of the system per unit time of manufacture equipment and limiting the reliability.Finally, using the Matlab to numerical calculation and drawing, it shows that the model is more feasible and effective in actual production.