Active Disturbance Rejection Control of All-Clamped Plate Structure with Inertial Actuator Based on Frequency Response Method

Abstract

AbstractModel uncertainties, system time-delay, and strong coupling strongly impact the all-clamped plate (ACP) structure. Therefore, linear active disturbance rejection control (LADRC) as controller and inertial actuator (IA) as actuator are used to deal with these problems. However, the complex characteristics of the all-clamped plate with inertial actuator (IA_ACP) still make LADRC difficult to design and analyze. In this work, the frequency characteristics of LADRC are derived, and then it is applied to the vibration suppression system of IA_ACP. According to the frequency response of the system, the identification model of IA_ACP is established to provide the frequency characteristics of the system, and the LADRC parameters are adjusted according to the relationship between the two-degree-of-freedom (2 DOF) PID and LADRC in the frequency domain. Finally, on the hardware in the loop simulation platform based on NI PCIe-6343 acquisition card, it is verified that LADRC can effectively suppress the vibration of ACP. The frequency domain analysis of the experimental results shows that the proposed method is feasible.KeywordsAll-clamped plate with inertial actuator (IA_ACP)Linear active disturbance rejection control (LADRC)Active vibration suppressionFrequency domain