混合成分噪声干扰下异质复合高强混凝土的锯切状态辨识与实时诊断方法

面向异质复合高强混凝土加工状态演变智能诊断的需求，针对其材料成分变化影响下的锯切加工变化规律、趋势及其加工过程控制应用问题，以解决混合成分噪声干扰信号对加工及刀具状态判断的影响为目标，结合智能算法、自适应滤波技术、聚类分析及模型预测等技术，开展材料成分、刀具状态及刀具磨损特征提取实验，探究由切削力、振动、声发射、主轴转矩及锯片偏摆量动态参数中的各成分噪声干扰子集构成的滤波判断方法。采用基于采样信号自适应滤波技术的特征频段能量比及相关系数的判断策略筛选加工状态及刀具状态特征。利用蝙蝠算法优化神经网络建立抗混合成分噪声干扰的刀具状态智能甄别及预测模型。利用隐马尔可夫算法建立刀具剩余寿命智能预测模型。通过构建基于模型预测控制技术的无线实时诊断控制系统，识别刀具状态及预测刀具寿命，建立异质复合高强混凝土加工的实时诊断理论及实现方法，为异质复合高强混凝土的智能化加工及过程控制技术提供理论和应用依据。

This project is demanded by intelligent diagnosis for heterogeneous composite high strength concrete processing state, which its cutting processing, change rule and process control application are under the influence of material composition change. In order to solve the influence of component mutation signal on machining and tool condition judgment, combined with the intelligent algorithm, adaptive filtering technique, sensor fusion technology and prediction model, the experiments of the material composition, tool condition and tool wear feature extraction will be carried out. An noise filtering method will be adopted to explore the cutting force, vibration, acoustic emission, spindle torque and sawblade deflection to determine the noise subset. Based on sampling signal adaptive filtering technology, the feature frequency energy ratio and correlation coefficient are used to select the machining state and tool state characteristics. The bat algorithm should used to optimize the neural network to establish an intelligent tool state discrimination and prediction model. An intelligent prediction model of tool residual life will be established by using hidden markov algorithm. By constructing the wireless real-time diagnosis control system based on the model predictive control technology, the tool status would be identified and the tool life can be predicted, and the real-time diagnosis theory and implementation method for the processing of heterogeneous composite high-strength concrete can be established, which provided the theory and application basis for the intelligent processing and process control technology of heterogeneous composite high-strength concrete.