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Based on metrology, Geometrical Product Specifications (GPS) standard system proposes higher specification requirements for position tolerance evaluation. Based on analyzing of the definition of the axis of the plane and the measurement method, the least square method of parallel evaluation model is used for the model coordinate system transformation, so it can unify the elements of the tested elements...
Based on the standards of the Geometric Product Specification and Verification-the new generation of GPS, a minimum zone mathematical model for evaluation of flatness error was given. The mathematical model of flatness error was first constructed by using Lp-norm on the basis of operations of the new generation of GPS. According to the characteristics of flatness error, an improved Particle Swarm...
CNC systems have been widely adopted in the modern manufacturing and most of them were built on computers. As a result of the special hardware and software, it is difficult to maintain the CNC systems and update them. To solve the problem above, many new methods were adopted. One method based on DSP is studied in this paper. The features of new generation CNC based on DSP were presented and characteristics...
Most evaluation technology of the rail straightness at present is still built on the specifications based on the geometries. The principles of duality and consistency between specifications and verification stage proposed in the new generation of geometrical product specifications (GPS) have not been taken into consideration and resulted in the loss of control of the functional requirements. To solve...
In accordance with the new generation geometrical product specification and verification (GPS), the specification design process and the measurement and verification process must satisfy with duality principle so as to avoid the ambiguous problems during the verification process. To solve the problems how to generate the specification surface model of planar feature and design and apply the corresponding...
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