Design And Development Of Control System For Mounter Based On ARM

In recent years,with the rapid development of China's economy,the market demand for all kinds of electronic products is increasing.As an important equipment of electronic components mounting process,the demand of mounter is also expanding.Because the current popular Mounter in the market is mainly for large and medium-sized enterprises in mass production,the system is complex and expensive,while the small Mounter system with simple structure has problems of unstable start and stop,slow running speed and low accuracy.Therefore,the design and development of a desktop Mounter control system with simple structure and excellent performance is of great significance to reduce the production cost of small enterprises.A desktop chip mounter control system based on ARM microcontroller is designed in this thesis.The main contents of this research include the following aspects:(1)A motion controller based on STM32F407ZGT6 microprocessor is designed according to the actual demand of the control system of the chip mounter.The overall framework and functional modules of the system are introduced in detail.(2)The commonly used linear and S-curve acceleration and deceleration planning algorithms are analyzed,and their respective advantages and disadvantages and their applicable control systems are pointed out.According to the actual requirements of smooth start-stop,fast acceleration and high speed for the desktop mounter control system combining the advantages of linear and S-curve programming algorithms,the S+T curve speed planning algorithm is designed.The acceleration and deceleration process and mathematical model are analyzed in detail.The specific design realization process is given,and the simulation comparison test is carried out.(3)The target position and target speed obtained by speed planning are input as reference signals.The linear auto disturbance rejection controller(LADRC)of X and Y axes is designed.The design principle and implementation process of the control algorithm are analyzed in detail.(4)The software development of SMT motion control system is completed,including main function,serial port communication function,manual test function,etc.the operation of SMT system is controlled by upper computer operation software,and two speed planning algorithms are tested under the given maximum speed.The results show the superiority of the method proposed in this thesis,and the real location tracking algorithm is further completed.The results show the effectiveness of the algorithm.Finally,the research work of this thesis is analyzed and summarized,the shortcomings are found,and the future research directions are prospected.