论文标题:基于C8051F005单片机的两相混合式直线步进电机驱动系统的设计
Design of Dual-phasic Composite LSM Drive System Based on C8051F005 SCM
论文作者
论文导师 钱珊珠,论文学位 硕士,论文专业 农业电气化与自动化
论文单位 内蒙古农业大学,点击次数 124,论文页数 42页File Size1991K
2007-05-01论文网 http://www.lw23.com/lunwen_553218787/
Linear stepper motor;;Subdivision;;Index movements frequency;;SCM
本课题采用比普通单片机快十多倍的C8051F005单片机,设计了基于C8051F005控制的直线步进电机驱动控制系统,扩大了细分度和速度的可调节范围。 在控制策略上,依据直线步进电机力-速特性和动力学方程,推导了直线步进电动机理想的升降速控制曲线,实现了指数规律的升降速控制,使系统具有良好的动态特性,解决了点位控制中的失步和直线步进电机行程末端的机械冲击问题;采用等幅均匀细分控制技术,有效地克服直线步进电机低频振动,提高了电机在中、低速运行时的性能,提高了系统的分辨率,减小了噪音;采用具有恒流斩波功能的专用驱动芯片,使直线步进电机绕组电流恒定,电机运行更加平稳。 完成了C8051F005单片机和UC3717A结合的硬件电路设计,用汇编语言编写直线步进电机定位、匀速往返和加减速三种运行方式控制程序。实现了对直线步进电机的启停、定位、调速及正反向运行的控制。最后在SLPMU-025A样机上进行了测试,实验结果满足设计要求。 该驱动控制系统可做为步进电机本体研发的配套设备,通过修改软件参数也可推广应用于其他步进电机的驱动控制,具有较好的应用前景。
The linear stepper motor control system based on C8051F005 SCM(Single Chips Micyoco), which tenfold quicker than ordinary one, is designed in this thesis, the subdivision range and velocity’s continuous reconcilability is extended. In the control strategy, the accelerate/decelerate rule of linear stepper motor is gained according to its power-velocity peculiarity and the dynamics equation, and thereby ascend-descend control of exponential rule is achieved and possessing a better dynamic peculiarity. Meanwhile the miss-step of dot-position control and mechanical impact of linear stepper motor action bottom are all solved. The equal-breadth symmetrical subdivision control technology is adopted in order to overcome low-frequency of linear stepper motor, and consequently orientation accuracy and noise are all improved. The appropriative driving chip which has invariance wave function is adopted, consequently linear stepper motor can has invariance current and a better balanced drive function. The hardware circuitry, its kernel is C8051F005 SCM and UC3717A, drive appropriative chip is designed. Three circulate mode procedure: orientation, parallel velocity and accelerate/decelerate are compiling by assemble language; the start/stop, orientation, velocity modulate and positive/negative circulation are effectively controlled. It is tested in SLPMU-025A sample machine finally. The experimental result is satisfied with the design requirement. It can be lab partnership equipment for motor noumenal R&D(research and development), and can be generalized to the production of linear stepper motor’s appropriative driving control instrument in virtue of modifying parameter, which has a preferable application foreground.
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