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This paper aims at modeling and nonlinear control of two-wheeled self-balancing robots based on gyroscope effect. An MIMO nonlinear dynamic mode is presented by using Euler-Lagrange method and Maple software to describe the self-balancing robot. Then a dual input-output sliding mode controller is designed to analyze the nonlinear system, and a simulation experiment is achieved with MATLAB/SIMULINK...
Electromechanical converters (EMCs) are regarded as the most widely employed linear motion mechanism in various industry driving fields. This study tries to improve the characteristics deficiency of a moving coil electro-mechanical converter (MC-EMC), such as the output electromagnetic force, response time and response speed, and based on the time constant and currents are effected by inductance and...
This paper investigates the development of an exact constraint parallel robotic arm unit. In addition to the advantages of simple structure and compact size, the six points exactly constrained parallel robotic arm unit is both statically and kinematicaly deterministic, thus is more suitable for precision position application. Theoretical analysis based on the principle of exact constraint is given...
The Anand constitutive model has emerged as a popular method to describe the inelastic deformation behavior of Sn-Pb solders and, more recently, to describe the behavior of lead-free solders in electronic assemblies, mainly due to its effective description of constitutive behavior and high compatibility with finite element modes. Heretofore, although plenty of experimental and theoretical works have...
Noise-like waveform and strange attractor are considered as important characteristics of chaos. In this paper, a new chaotic system with a novel attractor looking like limit cycle, which generates a sine-like output waveform, is found. The existence of chaotic signal with sine-like waveform is further investigated by employing several numerical tools and verified by simulating an experimental circuit.
We inspected the relationship between cardiovascular disease and clinical pulse wave data. The pulse wave data were collected from the Department of Cardiology at Shandong Provincial Hospital by infrared light pulse wave sensor. Based on the risk factors, Stiffness Index (SI) and Cardiac Output (CO) are utilized as the characteristics to detect cardiovascular disease. The results show a close relationship...
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