Integral force feedback control with input shaping: Application to piezo-based scanning systems in ECDLs
Integral force feedback control with input shaping: Application to piezo-based scanning systems in ECDLs
复制标题
具有输入整形的积分力反馈控制：在 ECDL 中基于压电的扫描系统的应用
DOI：
10.1063/1.4993926
复制
发表时间：
2017
影响因子：
1.6
通讯作者：
Hong Jun
中科院分区：
文献类型：
--
作者：
Zhang Meng;Liu Zhigang;Zhu Yu;Bu Mingfan;Hong Jun
为了克服压电基扫描系统的迟滞和动态特性问题，提高可调谐外腔半导体激光器的扫描速度，提出了一种将力反馈和输入整形方法相结合的混合控制系统。分析了柔性铰链和压电作动器，建立了扫描系统的动力学模型。在积分力反馈(IFF)中使用了力传感器和积分控制器，以直接增大压电式扫描系统的阻尼。磁滞现象已得到有效消除，但机械共振现象仍然明显。在拐点后出现明显的残余振动，然后逐渐消失。为了进一步控制机械共振，基于最小加速度轨迹规划理论，提出了一种基于时间域的输入整形方法。扫描轨迹的转弯部分被光滑的曲线取代，而线性部分保持不变。将IFF方法与输入整形方法相结合，对高速压电基扫描系统中的非线性和机械共振进行控制。通过实验验证了所提出的控制方法的有效性。
In this paper, a hybrid control system is developed by integrating the closed-loop force feedback and input shaping method to overcome the problem of the hysteresis and dynamic behavior in piezo-based scanning systems and increase the scanning speed of tunable external cavity diode lasers. The flexible hinge and piezoelectric actuators are analyzed, and a dynamic model of the scanning systems is established. A force sensor and an integral controller are utilized in integral force feedback ( IFF) to directly augment the damping of the piezoelectric scanning systems. Hysteresis has been effectively eliminated, but the mechanical resonance is still evident. Noticeable residual vibration occurred after the inflection points and then gradually disappeared. For the further control of mechanical resonance, based on the theory of minimum-acceleration trajectory planning, the time-domain input shaping method was developed. The turning sections of a scanning trajectory are replaced by smooth curves, while the linear sections are retained. The IFF method is combined with the input shaping method to control the non-linearity and mechanical resonance in high-speed piezo-based scanning systems. Experiments are conducted, and the results demonstrate the effectiveness of the proposed control approach.