Harbin Engineering University

About: Harbin Engineering University is a education organization based out in Harbin, Heilongjiang, China. It is known for research contribution in the topics: Control theory & Computer science. The organization has 31149 authors who have published 27940 publications receiving 276787 citations. The organization is also known as: HEU.

Motion-control analysis of ICPF-actuated underwater biomimetic microrobots

Abstract: This paper introduces the development of biomimetic underwater microrobots consisting of AVR microcontroller, an infrared ray communication system, and ionic conducting polymer film (ICPF) actuators. We use AVR ATmega16 as the control unit and an infrared ray receiver to provide feedback to the AVR unit. The spiral particle pathway searching approach is developed to search for particles. We also use MATLAB and OpenGL to simulate the path planning and optimisation according to the particle swarm optimisation algorithm. We implemented and demonstrated wireless control over the trajectory of individual microrobot, and extended this to three units in an expect formation.

Facile synthesis of porous (Co, Mn)3O4 nanowires free-standing on a Ni foam and their catalytic performance for H2O2 electroreduction

Abstract: Porous (Co, Mn)3O4 nanowires freely standing on a Ni foam are synthesized via a template-free growth method, followed by a thermal treatment in air. The nanowires are characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffractometry, X-ray photoelectron spectroscopy, thermogravimetric analysis and Fourier transform infrared spectroscopy. Their catalytic performance in H2O2 electroreduction is evaluated by linear scan voltammetry and chronoamperometry. Results show that a thermal treatment leads to the conversion of solid nanowires of MnCO3 + CoCO3 to porous nanowires of (Co, Mn)3O4via decomposition and reconfiguration, which is identified to be the catalytic active component for H2O2 electroreduction. Nanowires calcined at 300 °C exhibit the highest activity for H2O2 reduction and a current density of 329 mA cm−2 is obtained in 3.0 mol dm−3 KOH + 0.6 mol dm−3 H2O2 at −0.4 V (vs. Ag/AgCl, KCl). The catalytic activity of (Co, Mn)3O4 nanowires is almost twice than that of Co3O4 nanowires. The role of Mn in improving the catalytic activity is proposed and discussed.