Maintenance method for electrical system of electric sweeper truck

Abstract

The invention discloses a maintenance method for an electrical system of an electric sweeper truck. The maintenance method comprises the steps of fitting Weibull distribution according to processed historical fault data of all components of the electrical system of the electric sweeper truck, and obtaining shape parameters beta of all the components; judging the shape parameter beta so as to classify all the components, and determining the components needing preventive maintenance; introducing a service age fallback factor tau into the part needing preventive maintenance, and obtaining the fault rate lambda and the reliability R of the part needing preventive maintenance in the life cycle according to tau; establishing an average cost rate model of the parts needing preventive maintenance;establishing a preventive maintenance optimization model by taking the lowest average cost rate in the life cycle as a target function, taking the reliability R and the availability A as constraint conditions and taking the preventive maintenance cycle and the frequency as decision variables; and obtaining an optimal solution of the preventive maintenance optimization model by adopting a dynamicprogramming algorithm, and maintaining the electric system of the electric sweeper truck according to the optimal solution.

Description

technical field [0001] The invention relates to the field of electrical system reliability, in particular to a method for maintaining the electrical system of an electric road sweeper. Background technique [0002] The electric road sweeper is the object that the government has vigorously promoted and developed in recent years. It is suitable for outdoor cleaning work in parks, sanitation, cleaning companies, property management companies, squares, and universities. Since the popularity of electric road sweepers is still in its infancy, there is currently no set of preventive maintenance decision-making systems for itself. Most enterprises and companies still refer to the traditional preventive maintenance methods of fuel-powered vehicles and the data provided by the manufacturer. However, even the existing maintenance methods for electric road sweepers still stay in the maintenance strategy for the whole vehicle, and few in-depth studies have been done on electrical compone...

AI Technical Summary

Problems solved by technology

Since the popularity of electric road sweepers is still in its infancy, there is currently no set of preventive maintenance decision-making systems for itself. Most enterprises and companies still refer to the traditional preventive maintenance methods of fuel-powered vehicles and the data provided by the manufacturer. , even the existing maintenance methods for electric road sweepers still stay in the maintenance strategy for the whole vehicle, and few have done in-depth research on electrical components and systems with high failure rates

[0003] However, the existing preventive maintenance usually adopts equal-period maintenance or variable-period maintenance. The medium-period maintenance is easy to operate, but the economy is often not optimal; the variable-period maintenance can better reflect the law of equipment degradation, but the operation is complicated and not conducive to implementation.

The most important thing is that the operating reliability of most electric road sweeping vehicles cannot be guaranteed at present, which will increase the number of accidental failures during the operation of the vehicles. Since the electric road sweeping vehicles generally work on the road, this will cause Increase the possibility of traffic accidents and seriously affect road safety

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