Intelligent Working Face Bracket Controller Development

The research,content of this topic is the research and application of the control system of hydraulic support controller in coal mine.At present,the foreign hydraulic support electrohydraulic controller products used have communication protocol encryption,difficult to crack,difficult to upgrade and upgrade,and do not have defects such as fault self-diagnosis.The domestic hydraulic support electrohydraulic controller are cheap,but the overall function is weak,and there are problems such as low reliability,short life,poor real-time responsiveness,and weak resistance to interference.Based on the research status of hydraulic controller in coal mine at home and abroad,this paper has developed a set of hydraulic support controller for mine,which can realize the independent control of the pull frame and slide of the bracket tracker through the data acquisition and transmission processing at the end of the bracket.The design of the hydraulic support controller is based on the original controller module.By upgrading the hardware circuit and software flow,the controller's autonomous control and self-diagnosis function are realized,and the stability,reliability and safety of the hydraulic support controller are greatly improved.The main work of the paper is:(1)Research and analysis of electrohydraulic control system of hydraulic support.The basic composition,working principle and main functions of this new automatic control system are analyzed.It will lay the foundation for optimizing the electrohydraulic controller design of hydraulic support.(2)The overall design of the electro-hydraulic controller for hydraulic support.First find the position of the quasi-controller,analyze the control method and working principle of the controller,and then explore the realization of the controller's function,and finally according to the relevant specifications of the corresponding index indicators.(3)The hardware and software realization of the support controller.The hardware part includes the formulation of main parameters,the realization of main functions,the design of logic circuits,the design of the core control module of the controller,the design of the communication module,the design of the electromagnetic drive circuit amount,and the design of anti-interference design and interface design.The software part of the bracket controller is transplanted into the uC/OS-? system,which provides the necessary support for the embedded operating system system,constitutes the support layer of the controller software,and the driver of the control circuit constitutes the physical layer of the controller software.Various applications of the system constitute the application layer of the system.There is also a logical layer between the application layer and the physical layer to achieve the mapping of the application layer and the physical layer.(4)Debugging and operation of the support plus controller.The test platform construction,hardware circuit and communication ability are tested first,and the results meet the design requirements.The test of the electrical and hydraulic control system of the bracket controller is carried out,and the results meet the requirements of comprehensive mining.