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The feedrate planning problem of robotics and computer numerical control (CNC) systems is discussed in this paper for realizing planar high precision contouring in minimum time. Besides of the usually considered velocity, acceleration and jerk constraints, a contour error estimation function is also introduced to drive the feedrate planning problem. By directly confining the estimated contour error...
Previous computation approaches of smooth minimum time trajectory for path following robotic manipulators either cannot fully utilize the maximum ability of machines, fail to minimum machine time, or cannot be computed efficiently because of the nonlinearity of problem formulations. In this paper, an efficient computation approach is proposed that has been designed as solving a convex optimization...
This paper proposes an efficient shape reconstruction method from sectional data in 3-axis Numerical Control (NC) machining. A merge-divide algorithm is proposed to construct triangle meshes for machined surfaces with arbitrary shape and genus. The algorithm is of linear complexity due to the special property of the NC data. The method is used to interference detection and space cutter compensation...
This article consists of nine short essays discussing research pursued by AI researchers in China and their perspectives on research in several AI subareas. The article first introduces the mechanization of mathematics, an area in which Chinese scientists have made significant contributions. It then discusses research in automated reasoning, temporal and spatial knowledge representation and reasoning,...
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