航空发动机分布式控制系统
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摘要
航空发动机控制正在向小型化、综合化、高性能、高可靠性方向发展,分布式控制系统是一个很有前途的新型控制系统。
     本文分析了航空发动机分布式控制系统的结构、特点和功能,指出了航空发动机分布式控制系统开发的关键技术问题。提出了基于DSP和CAN总线的智能装置(包括智能传感器和智能执行机构)设计方案,讨论了智能装置的抗干扰技术。
     设计了智能装置的硬件电路、封装外壳和相关软件,在实验室环境下研制完成了智能温度传感器、智能压力传感器、智能转速传感器和智能位置控制器。智能装置体积小巧、功能强大、便于组网,符合航空发动机分布式控制系统的要求。智能装置分别进行了测量和控制实验,其中智能位置控制器在物理实验台上实验通过,均取得了良好的效果。
     此外还建立了一个实验室环境下的航空发动机分布式控制系统实物模型。提出了基于CAN总线的分布式控制系统通讯协议,并在实物模型上调试通过。
Aero-engines are developing in the miniaturization, totalization, high performance, and high dependability direction. Distributed control will become the important and promising direction of aero-engine control.
    The structure, functions, advantages of aero-engine distributed control systems were emphatically expatiated in this thesis. Key technology of the distributed control systems for aero-engines was pointed out. Design plan of the smart devices(including smart sensors and smart actuators) based on DSP and CAN buses was proposed. The anti-interference technology of the smart devices was discussed.
    Hardware circuits, encapsulation boxes and software of the smart devices were designed. The smart temperature sensor, smart pressure sensor, smart speed sensor, and smart positioning actuator were developed. The smart devices have small space and powerful functions, and can be organized in the network conveniently. The measurements and control experiments of the smart devices have been carried out, and the smart positioning actuator has been tested on the physical experiment bench. All experiments have showed good results.
    The physical model of aero-engine distributed control systems under the laboratory environment has been set up. The communication protocol based on CAN buses was proposed and has been tested on the physical model.
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