Detection and Identification of Axial and Radial Impacts on Pneumatic Muscle

doi:10.3969/j.issn.1000-1093.2016.10.017

Abstract

Abstract: Impact detection is a challenge in research of bionic driver. Axial and radial impact characteristics of pneumatic muscle are analyzed based on the tube cavity effect, and the differential pressure signal is modeled using the fluid impedance method. An impact test platform is established and used to gain the effects of load, pressure, impact intensity and radial impact position on the differential pressure signal. The periodic changes in the phase frequency curves of differential pressure signal under axial and radial impacts are compared. Autocorrelation function method is used to extract the periodic characteristics of the differential pressure signal. Forty groups of validation experiments are implemented. The experimental results show that the axial and radial impacts can be detected and identified by the autocorrelation function method of differential pressure signal. The identification accuracy is 97.5%.

Key words: control science and technology, pneumatic muscle, impact detection, tube cavity effect, fluid impedance method, autocorrelation function

CLC Number:

TP242.6⁺1

WANG Bin-rui, REN Jie, XU Hai-dong, BAO Chun-lei. Detection and Identification of Axial and Radial Impacts on Pneumatic Muscle[J]. Acta Armamentarii, 2016, 37(10): 1896-1901.

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