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首页> 外文期刊>The International Journal of Advanced Manufacturing Technology >Vibration suppression of thin-walled workpiece milling using a time-space varying PD control method via piezoelectric actuator
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Vibration suppression of thin-walled workpiece milling using a time-space varying PD control method via piezoelectric actuator

机译：通过压电致动器使用时隙变化PD控制方法振动抑制薄壁工件研磨

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摘要

The vibration suppression and workpiece surface improvement of thin-walled workpiece milling are highly concerned due to the weak stiffness of the workpiece and the time variant of dynamic characteristics during milling process. In this paper, an active vibration control system is developed to suppress the vibration of thin-walled workpiece milling. The dynamic model of plate-actuator milling system is derived using Hamilton's principle and solved using FEM method. Acceleration sensor and piezoelectric patch are selected as the sensor and actuator in the control system. Considering the time variant of dynamic characteristics and the position limit of sensor and actuator during milling process, a time-space varying PD (VPD) control method is presented and utilized. The VPD control method applies time varying control parameters. Some simulation and experimental validations are carried out to validate the effectiveness of the control system. The overall results indicate that the proposed control system perform well in suppressing the vibration of thin-walled workpiece milling process.
机译：由于工件的弱刚度和研磨过程中的动态特性的时变形，薄壁工件研磨的振动抑制和工件表面改善非常涉及。在本文中，开发了一个有源振动控制系统来抑制薄壁工件铣削的振动。使用汉密尔顿原理和使用FEM方法解决的板式执行器铣削系统的动态模型。加速度传感器和压电贴片被选为控制系统中的传感器和致动器。考虑到在研磨过程中的动态特性和传感器和致动器的位置极限的时间变型，提出和利用了时空变化的PD（VPD）控制方法。 VPD控制方法应用时间变化的控制参数。进行了一些模拟和实验验证以验证控制系统的有效性。整体结果表明，所提出的控制系统在抑制薄壁工件铣削过程的振动时表现良好。

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