【作者】 崔彬；

【导师】 王立权；

【作者基本信息】 哈尔滨工程大学 ， 机械设计及理论， 2006， 硕士

【摘要】 探针支架本体及控制系统属于燃气轮机引射冷却吹风试验台中一套设备，用于实验室的探针定位。本探针定位系统采用全数字控制的，可同时适用于热线风速仪和压力探针两种传感器，具有定位精度高、多点分布式测量和探针自动定位等特点。本文在系统分析定位系统组成及特性的基础上，完成了探针定位系统总体设计，该系统采用模块化设计思想，由PC机、CAN总线转换接口，控制器和两自由度定位机构等模块组成系统。角位移的执行元件为无间隙啮合的圆弧齿轮副形式，采用丝杠螺母形式的执行部件使得探针定位系统两自由度运动平稳，定位精度高。对控制模块进行了设计，基于LM629完成了位置伺服控制模块的设计，保证了探针定位系统运动的可靠性。充分分析比较了现场总线各种类型，对通信系统设计机型了设计，基于CAN232模块构建了上位机单元与探针定位支架的通信系统，通讯单元完成与上位PC机的通讯功能，接收位置设定值和各种命令(如系统复位、系统自检等)；位置控制单元根据位置设定值驱动电机运动到指定的位置，同时反馈回实际运动位置值。CAN232模块延长了PC机的RS232通讯距离，提高了系统抗干扰能力，而且CAN总线可进行多点通讯，最多可实现PC机对128套两自由度定位机构的同步控制。从系统应用实际出发，开发了探针定位系统相应的控制软件，进行了探针定位系统的试验研究，以设计要求指标为对象，完成了两个自由度的试验分析，达到了设计要求。更多还原

【Abstract】 Probe scaffold and control system which belong to equipment in the injection blowing tester of combustion turbine are used for probe locating in the laboratory. This probe locating system with all-digital control is suitable for two types of sensors, the hot-wire anemoscope and pressure probe at the same time, which has high locating precision of probe, multiple-point distributed measurement and automatic position of probe and so on.This paper analyzes the institution and character of locating system, and then completes integrated design. This system which is comprised of PC, CAN bus conversion interface, controller, and locating institution module with two-degree-of-freedom and so on employs the idea of building block design. Executor of angular displacement is in the form of circular tooth gear of zero clearance mesh. It employed with the lead-screw nut form of executive component makes probe locating system with two-degree-of-freedom move smoothly, with high locating precision. After the design of control module and position servo module based on LM629 is accomplished, it guarantees the motional reliability of the probe locating system. Compare the practical all kinds of buses and design the communication system, establish the first cell and scaffold of probe locating based on CAN232 module. Communication cell completes the mission which connects with the first PC. And it accepts position stated value and all kinds of command (such as, system reset, system self-check and so on). In response to the positional value, position control cell drives motor to the specified position, at the same time it feeds back practical motional value. CAN232 module extends RS232 communication distance of PC, elevates systematic capability of anti-interference. Furthermore, CAN bus which at most 128 locating institutions with two-degree-of-freedom are controlled synchronously by PC can carry out multiple-point communication.From the reality of system application, this paper exploits control software according to the probe locating system and has proceeded with the experimental research of the probe locating system. According to indexing of the design requirement, it accomplishes the experimental analysis of two-degree-of-freedom, which meets the demand for design.更多还原