Lake water height is a key variable in cycle and climate change studies, which achievable using satellite altimetry constellation. A method based on data processing of from several satellites has been developed to interpolate mean lake surface (MLS) over set 22 big lakes distributed the Earth. It applied nadir radar altimeters Low Resolution Mode (LRM: Jason-3, Saral/AltiKa, CryoSat-2) Syntheti...

Designing a movable spatial four-bar mechanism that guides a coupler system through three given poses is an old and well known problem. The resulting mechanism has to be overconstrained and is called Bennett mechanism. We give a completely new solution of this problem using kinematic mapping and multidimensional geometry. This approach provides a new insight in the problem. First of all it show...

Kinematic accuracy reliability is an important performance index in the evaluation of mechanism quality. By using a 3DOF 3-PUU parallel robot manipulator as the research object, the position and orientation error model was derived by mapping the relation between the input and output of the mechanism. Three error sensitivity indexes that evaluate the kinematic accuracy of the parallel robot mani...

The growing interest and use of indoor mapping is driving a demand for improved data-acquisition facility, efficiency and productivity in the era of the Building Information Model (BIM). The conventional static laser scanning method suffers from some limitations on its operability in complex indoor environments, due to the presence of occlusions. Full scanning of indoor spaces without loss of i...

Abstract The velocity/ acceleration analysis is an important part of the kinematic analysis, which great significance to establish a universal and simple velocity / model realize precise control parallel mechanism. In this paper, according differential relationship among position, acceleration, mapping formula between driving branch position attitude parameters moving platform established. More...

Kinematic synergies in human hand movements have shown promising applications in dexterous control of robotic and prosthetic hands. We and others have previously derived kinematic synergies from human hand grasping movements using a widely used linear dimensionality reduction method, Principal Component Analysis (PCA). As the human biomechanical system is inherently nonlinear, using nonlinear d...

An abstract recurrent neural network trained by an unsupervised method is applied to the kinematic control of a robot arm. The network is a novel extension of the Neural Gas vector quantization method to local principal component analysis. It represents the manifold of the training data by a collection of local linear models. In the kinematic control task, the network learns the relationship be...

We present an algorithm for functional kinematic tolerance analysis of general planar mechanical systems with parametric tolerances. The algorithm performs worst-case analysis of systems of curved parts with contact changes, including open and closed kinematic chains. It computes quantitative variations and helps designers detect qualitative variations, such as blocking and under-cutting. The a...

At present, the research objects of rigid-body guidance synthesis are mostly limited to pure linkages, and there is little on combined mechanisms gears or cams linkages. In order expand improve kinematic mapping theory, this paper proposes a method noncircular gear-five-bar mechanisms. A mechanism can be regarded as combination 2R (two revolute joints) open chain, 3R (three chain pair gears. Fi...

Observers are able to judge quite accurately the weights lifted by others. Only recently, neuroscience has focused on the role of the motor system to accomplish this task. In this respect, a previous transcranial magnetic stimulation (TMS) study showed that the muscular force requirements of an observed action are encoded by the primary motor cortex (M1). Overall, three distinct visual sources ...