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This article analyzes the performance and the energy of a dissimilar redundant hybrid electro-hydraulic actuation system component by EHA and EMA by using Bond Graph method and designs a controller to improve the system performance and efficiency. Firstly, use 20-sim to create EHA and EMA bond graph model, analyze the characteristics of each system; Secondly, construct EHA and EMA collaboration system...
An atomic force microscope (AFM) has been utilized to implement various manipulations with nanometer precision. Unfortunately, an AFM-based nanomanipulation system often meets the problem of low reliability and low efficiency, mainly due to the difficulty of positioning the AFM tip near the sample. In this study, a positioning control strategy is designed to accurately drive the probe to implement...
Piezoelectric actuators have been widely utilized in micro/nano systems due to the high positioning resolution. A typical instance is piezo-scanners equipped in scanning probe microscopes (SPM) to implement nanoscale measurement and manipulation for various samples. However, the inherent hysteresis and structural vibration of a piezo-scanner largely limit its positioning accuracy and bandwidth, as...
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