In order to eliminate the hysteresis error of piezoceramic servo tool during non axisymmetric curved surface turning, three feedforward controlling mathema tical models have been established, i.

Research on Path Planning and Surface Fitting for Non-axisymmetric Aspheric Measuring

Using amplification functions method,the critical νelocities are obtained when shells appear axisymmetric or multi unaxisymmetric buckling modes,and the relations between critical νelocities with radius to thickness ratios are discussed.

Study on intellectualized control for deep drawing of axial-symmetric shell part;