发动机防热结构件智能压粘机控制系统设计

Design of Control System in Intelligent Pressure glue machine for thermal protection structure of motor

摘要:

为解决现有固体火箭发动机喷管防热结构件粘接自动化程度不高、生产效率低、人为因素影响多、粘接质量不稳定等问题，设计防热结构件智能压粘机控制系统；基于AM5718 DSP+ARM双核处理器开发，搭载综合驱动采集卡，进行系统多轴运动精准控制及信号精确采集，实现系统整体控制；并阐述了设计中的控制难点及解决思路；采用运动控制函数跟踪插补控制技术、压力位移多公差窗口匹配控制技术、比例调节控制技术等，实现涂胶均匀度控制、旋转保压排气控制、成型过程精准稳压控制；经实际应用与原有加工方式相比，加工时间缩短65%、溢胶率减少85%以上、一次粘接合格率提高25%。

Abstract:

In order to solve the existing problems such as low automation degree, low production efficiency,human factors affecting more,and unstable bonding quality in the thermal protection structure bonding process of solid rocket motor nozzles,the measurement and control system of intelligent press glue machine for the thermal protection structure has been designed. Based on AM5718 DSP+ARM dual core processor development,combined with the interface board of servo drive and data acquisition ,the system carries out the facility controlment as a whole by processing multi-axes precision motion control and gatering high precision signal；meanwhile the controlling difficulties and solutions are elaborated； The system adopts techniques such as motion control function method by means of tracking interpolation,Multi tolerance window matching control of pressure and displacement，proportional adjustment control technology to realize coating uniformity control,etc.To realize glue coating uniformity control,rotation exhaust pressure-holding control,precision pressure control in moulding process；Compared with the original processing method, the processing time is reduced by 65%, the rate of glue overflow is reduced by more than 85%, and the qualified rate of one-time bonding is increased by 25%.