根据步进送料机的设计要求,利用SolidWorks软件建立送料机的三维模型,用以验证设计方案的正确性,本方案采用双直线四杆机构实现步进送料动作。在后续设计中还会用到ADAMS软件对模型进行力学仿真分析,因为ADAMS软件的建模功能不如SolidWorks软件强大,故可先用SolidWorks软件建立三维模型,再导入ADAMS软件中进行仿真分析。SolidWorks软件的应用大大缩短了设计周期,节约了设计成本,在现代设计中占有举足轻重的地位。

According to the design requirement of step feeding machine,SolidWorks was used to set up a three-dimen-sional model of feeder with the aim of proving the validity of the design scheme.And in this scheme,the four pole double straight line mechanism was utilized to achieve the feeding.Because the soft ADAMS is not as good as SolidWorks in the modeling way,and it will be still used in the dynamic simulation analysis and in the subsequent design,the three-dimension-al model can be imported into ADAMS to analyze after modeling in SolidWorks.Using SolidWorks can greatly shorten the design cycle and save the design cost,which plays a decisive role in modern design.

在SolidWorks软件中建立了步进送料机三维模型,然后利用SolidWorks软件与ADAMS软件之间的接口,将模型导入ADAMS软件中,建立仿真模型,并在相同条件下,通过ADAMS软件,对引入虚约束分别是主动件和从动件这2种情况进行对比仿真,从而给该机构的后续设计以及基于该机构的模型提供了参考,缩短了设计周期;同时,也说明了ADAMS软件在产品开发中的重要作用。

Established the 3D model of the step feeding machine in SolidWorks and imported it into ADAMS to make dynamic simulation.Under the same condition,this paper analyzed the force situation of transmission rack,under the condi-tion of crank with redundant constraint as follower mechanism and it as driving member,which provided the reference for the follow-up design,shortened the design cycle.At the same time,it illustrated that ADAMS plays an important role in the process of product development.

电机失步严重影响步进电机调速系统的稳定性和安全性。非对称调速系统以步进电机控制器为主用后,出现过调速器步进电机失步现象。三峡技术人员对步进电机失步进行了深入分析和故障原因研究,现场增加步进电机驱动器反馈监视硬件回路、完善失步检测及失步后的步进电机重启程序。通过这些应对措施,提升了控制器对步进电机失步后的控制性能,增强了机组调速器的安全稳定性。

Losing step seriously affects the stability and security of the stepper motor based governing system.After using the stepper motor controller-based governing system,the losing step phenomenon appeared in the Three Gorges Power station.In order to analyze and study the reason of losing step,technical staffs add the feedback loop monitoring hardware of stepper mo-tor driver,and improve losing step detection and restart process of stepper motor.Through these responses,the controller per-formance after the losing step of stepper motor was improved,and security and stability of the unit governor was also en-hanced.

为了实现步进电机控制以及步进电机的相电流检测,采用Cortex-M3作为主控制器,利用专用驱动芯片L298N,设计实现了步进电机的控制与检测系统。该系统通过电流转换芯片MAX4172采集步进电机相电流,利用RS-232与上位机进行串口通信,完成步进电机的频率设置和数据显示等功能。整个系统性能良好、运行稳定、结构简单、成本低,便于多步进电机的控制与检测,具有良好的实际应用价值。

In order to achieve the control of stepping motor and detection for phase current of stepping motor, the control and detection system of the motor is designed and implemented by adopting Cortex-M3 as the main controller, and the dedicated driving chip L298N for controlling and driving the stepping motor. The phase current of the motor is acquired by the system through current conversion chip MAX4172, while the functions of frequency setting of the stepping motor and data display are conducted via RS-232 serial communication with the host computer. The overall system features good performance, stable operation, simple structure, low cost, easy to control and detect the stepping motor, and possesses excellent practical applicable values.

自助机器人的动作是由步进电机来驱动，步进电机的控制精度比较高，在工业上有着广泛的应用。介绍步进电机的控制机理和使用PLC对步进电机控制的具体过程，给出了控制系统的硬件、软件设计方法。实际使用效果明显。

The robot car is driven by stepper motor. Its control precision is very high and it is widely used in industry. This paper intro-duces the controling mechanism and process of the stepper motor which is equipped with PLC and gives out the hardware and soft-ware design method of the control system. The practical application shows that its result is perfect.