模具钢真空退火智能控制方法及系统

• Format: Patent
• Language: Chinese
• Published: 25.03.2025
• Subjects: CALCULATING; CHEMISTRY; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGULATING

本发明提供模具钢真空退火智能控制方法及系统，涉及智能控制技术领域，包括将目标模具钢和目标模具钢所在的炉体内部划分为若干个有限元单元，根据预设的辐射扩散系数和目标模具钢中有限元单元中任一点的温度，结合辐射模型和辐射边界条件确定辐射强度；将辐射换热系数矩阵以及辐射强度进行迭代耦合，计算得到目标模具钢内部的三维瞬态温度场分布；以温度偏差为输入，进行模糊推理，得到自适应调整后的PID控制器参数；将自适应调整后的PID控制器参数代入PID控制算法，得到复合控制器的控制输出，并将控制输出作用于目标模具钢真空退火炉的加热器，实现对退火温度的控制。本发明能够实现模具钢真空退火智能控制，提高退火温控的精准度。 The invention provides a die steel vacuum annealing intelligent control method and system, and relates to the technical field of intelligent control, and the method comprises the steps: dividing target die steel and the interior of a furnace body where the target die steel is located into a plurality of finite element units, and calculating the temperature of any point in the finite element units in the target die steel according to a preset radiation diffusion coefficient and the temperature of any point in the finite element units; determining radiation intensity by combining a radiation model and radiation boundary conditions; the radiation heat transfer coefficient matrix and the radiation intensity are subject