Design Of High Precision Video Acquisition And Control System Based On Step Translation Platform

With the rapid development of modern electronic technology,recording system is more and more popular.People can watch and monitor the play in real time based on Lab VIEW system.In order to realize the three-axis linkage four axis control technology,the system itself also needs to expand various functions according to different needs,which has a certain practical value.In order to test and use the system to achieve certain functions,Thus,a set of high-precision video acquisition control system based on step translation platform is designed.The file firstly discusses the stepper control system of the present situation and development trend,research the significance of this topic,stepper control system and the characteristics of development and application status of the monitoring system,this article through the stepper control system of the development of the research at home and abroad,this paper proposes a use pan Boolean control three axis motor,PID algorithm is used to control the movement of the camera,is used to realize various acquisition function,and designed a PC to convenient remote operations,and other functions.Based on the mathematical model of hybrid stepper motor obtained by simplifying various conditions,two control algorithms,traditional PID and pan-Boolean PID,are applied to the motor model respectively,and the stepping servo control system has better anti disturbance ability,faster response speed and stronger position tracking ability,effectively improve the dynamic and static performance of the server system in the combination area,and produce good results.Then,in the principle analysis,the main working principles and the concept of system specification are described as six steps.In the software design,the program design of Labview part of the upper computer is mainly introduced,and the software realization of four axis control of three-axis linkage of stepping motor is briefly summarized.In the hardware design,the system is completed from two aspects of hardware circuit and mechanical structure design Finally,the control accuracy of the system is verified by analyzing the experimental data.The system consists of five parts: Labview,core board,single axis control card,stepper motor driver and stepper motor.Based on embedded technology,the system cooperatively controls the operation of four stepper motors.According to the requirements of Labview,the modular design idea is adopted.Starting from the parameter setting,motor control,communication configuration and other functional modules,the speed,position,maximum acceleration,transmission ratio and fraction of the stepper motor in the three-axis linkage four axis control system are accurately controlled,The motor will adjust according to the real-time data sent from the bottom computer to the upper computer.And the relative position of the slide.When the microcontroller on the core board receives the important data parameters sent by the upper computer Labview,it uses the expansion chip CH438 Q to register temporarily,which can reduce the workload of the main CPU,free the extra CPU memory for more peripheral expansion,and then transmits the data to the processor corresponding to max13487 for control.According to the RS485 serial communication mode,the parsed data parameters are stored The information is transmitted to the stc15 single-chip microcomputer on four single axis control cards,and connected with the motor driver by using the interface on the single axis control card to control the rotation of the stepping motor,which also acts on the corresponding lead screw to drive the sliding table on the optical axis to do linear motion,so as to realize the four axis control technology of three-axis linkage,so as to drive the camera to complete the high-precision and multi angle video acquisition work.