基于单片机的悬挂系统设计.doc

摘 要 本次课题设计制作了一个单片机控制的悬挂系统，通过相关参数计算及程序的设计，使系统的各项性能指标满足课题要求。其核心部分是控制芯片，由于其具有高集成度、高性价比、最简单外围电路、高效率等优点，所以得到广泛应用。80cm×100cm的范围内作直线、圆、寻迹等运动，并且在运动时能显示运动物体的坐标。本设计采用MSP430F1611单片机对步进电机进行控制，通过多圈电位器实现对悬挂物位置的精确测量，并引入局部闭环反馈控制环节对误差进行修正,以达到对物体的控制和对坐标点的准确定位。控制信号经过L298驱动电路来驱动步进电机，完成相应的规定动作；同时用键盘来控制任意坐标点的参数，并用液晶显示器显示悬挂物体中画笔所在位置的坐标；软件功能模块主要完成对步进电机运动的位置、速度、方向以及运动时间的控制。 关键词：单片机 步进电机 算法 Abstract This topic designed a suspension system which controlled by microprocessor, through the calculation of relevant parameters and procedures which designed to make the performance of the system to meet the subject requirements. Its core part is the control chip microcontroller, since it has high level of integration, cost-effective, and the most simple buffer circuit，high efficiency etc, so that be widely applied in real life. Suspension track control system is a set of motor control system, it controls the object in straight line, round, tracing, sports within the scope of 80 cm×100 cm, and can show the coordinates of moving objects in sports by the time. This design uses the MSP430F1611 microcontroller to control the stepper motor, achieving accurate measurement of the pedants position through multi-turn potentiometer, and introduce local close-loop feedback control links to error correction, so that to achieve control the object and with a accurate location to coordinate. Control signal drive stepping motor by L298 drive circuit, completing the corresponding regulations action; At the same time, using the keyboard to control any points of parameters, and display the coordinates of the brush in hanging objects with liquid crystal display. The software function module mainly completed control of the stepper motor in position, speed, direction and movement time. Key words：Single chip computer Stepping motor Arithmetic 目 录 摘要 I Abstract II 绪论 1 1 方案的比较与论证 2 1.1 设计任务 2 1.2 设计要求 3 1.3 数学模型 3 1.4 系统方框图 4 1.5 方案的论证与选择 4 1.5.1 单片机的选择与论证 4 1.5.2 电机的选择与论证 5 1.5.3 驱动电路的选择与论证 5 1.5.4 显示模块的选择与