Mechanical resonance suppression method based on active disturbance rejection control in two‑mass servo system

Tae-Gyeom Woo; Bum-Jin Kim; Young-Doo Yoon

Mechanical resonance suppression method based on active disturbance rejection control in two‑mass servo system

Tae-Gyeom Woo

Bum-Jin Kim

Young-Doo Yoon

Vol. 22, No. 8, pp. 1324-1333, Aug. 2022

10.1007/s43236-022-00473-3

Active disturbance rejection control

Disturbance suppression

Resonance

Two-mass system

Abstract

A method for suppressing the mechanical resonance of servo drives in a two-mass system coupled with a flexible shaft is proposed. Active disturbance rejection control considers the disturbance component of all torques, except for the torque of the moment of inertia of the drive motor, as the total disturbance, which is estimated using an extended state observer. In this paper, we use reduced-order active disturbance rejection control (RADRC) based on a reduced-order extended state observer to lower the order of the observer's gain. RADRC can reduce the order and thus increase the observer’s bandwidth. In addition, by lowering the moment of inertia of the drive motor used in the observer, the observer’s bandwidth can be increased, and the stability of the servo system can be ensured. The speed controller uses only the P controller to reduce the magnitude of the overshoot for the step response. To accurately reflect the system, the proposed method was designed in the discrete time domain. As a result, the proposed method can reliably suppress vibrations caused by the resonance of the mechanical system. Simulations and experiments on a 1.1 kW surface-mounted permanent magnet synchronous motor confirmed the effectiveness of the proposed method.

Statistics

Show / Hide Statistics

Cumulative Counts from September 30th, 2019
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.

Cite this article

[IEEE Style]

T. Woo, B. Kim, Y. Yoon, "Mechanical resonance suppression method based on active disturbance rejection control in two‑mass servo system," Journal of Power Electronics, vol. 22, no. 8, pp. 1324-1333, 2022. DOI: 10.1007/s43236-022-00473-3.

[ACM Style]

Tae-Gyeom Woo, Bum-Jin Kim, and Young-Doo Yoon. 2022. Mechanical resonance suppression method based on active disturbance rejection control in two‑mass servo system. Journal of Power Electronics, 22, 8, (2022), 1324-1333. DOI: 10.1007/s43236-022-00473-3.