激光淬火是将激光光束照射到工件表面从而使温度上升以得到相应的相变组织的一个过程。激光淬火能够提高淬火区域抗磨损、抗疲劳以及抗腐蚀的机械性能。但是由于在激光淬火过程中影响激光表面淬火温度场形成的因素很多, 所以很难建立起相应的激光淬火温度场控制数学模型。本文在研究中利用先进的模糊控制技术, 设置相应的模糊控制规则表, 从而通过激光淬火实时的温度反馈, 实现对工件表面的激光淬火温度场进行可靠控制, 从而保证淬火质量。本文所涉及的激光淬火温度场模糊控制算法是以工件表面淬火温度偏差为输入, 以扫描速度为输出的单输入单输出的模糊控制, 具有实用性和可靠性。

Laser quenching is performed in a highly localized area on the surface of a workpiece through certain thermal cycles. As a result, this small area of the workpiece possesses improved mechanical properties of better resistance to wear, fatigue and corrosion. The mathematic model of laser quench temperature control is difficult to be founded, because there are too many factors which have effects on the laser quenching temperature field forming. In this paper, fussy controlling algorithm is used. The corresponding rule table is set. Make it reliable to get a right temperature field for laser quenching on the surface of workpiece. In this way, the temperature error will be set as the input parameters, and the scanning speed of laser beam will be set as outset to adjust the laser quenching temperature. This method will be reliable and practical for laser quenching process.