The Development Of Microcomputer Anti-skid Braking System Of Mining Electric Locomotive

With the advantage of its large traction force and low maintenance costs, miningelectric locomotive is one of the most important transport equipment in the coal mine.Because the coal mine has complex production environment, it makes a great challenge to itssafe operation. At the same time, economic benefit requires a corresponding increase in thespeed of mining electric locomotive. How to ensure the mining electric locomotive to getbetter braking performance and shorter braking distance when it runs at high speed? Thisproblem becomes the focus and difficulty of anti-skid braking system for mining electriclocomotive.In this paper, the history, current situation and development trend of anti-skidcontrol system of mining electric locomotive are introduced. The relationship betweenadhesion coefficient and slip ratio is explained and the factor affecting adhesion is analysed.Through the research of working principle, structure and workflow of anti-skid control system,several physical quantities are used as control parameters and their advantages. The advantageand disadvantage of physical quantities are also analyzed. The parameters selection ofcommon anti-skid controller is introduced. A brief introduction to control algorithm such aslogical threshold control and fuzzy logic control is also analyzed. This paper focuses on thecomposition of the central control unit based on Single-chip microcontroller8051F410.Adoptting Single-chip microcontroller as the core, signal collection circuit, solenoiddrive circuits and power circuit were designed. The microcomputer anti-skid braking systemof mining electric locomotive was set up using modular design methodd. Optocouplers waschosen to achieve signal transmission and voltage insulation, so it can enhnceanti-interference ability. By analyzing anti-skid control strategy, slip ratio and deceleration were selected as control parameters and the logic threshold control method was adopted tofulfil the control of the braking process. The software of the system was designed to realizethe functions such as signal collection, computing and output control. Finally, collectingmodule and control module of control system were debugged and experimented. The brakingprocess of anti-skid system was simulated using the simulation experiment data. The accuracyof the microcomputer anti-skid braking system designed in this paper was examined. Itprovides an experimental basis for applying microcomputer anti-slip control system to miningelectric locomotive.