No abstract

No abstract

No abstract

A new real-time rotation-invariant template matching is proposed for industrial laser cutting applications. The technique is based on Histogram of Oriented Gradients (HOG) algorithm to remove rotational angle before the template matching process. It exploits the HOG and the Average Magnitude Difference Function (AMDF) features for rotationinvariance. Since HOG features are robust against illumination effects, the proposed algorithm is suitable for harsh industrial environments. The final aim of this study is to devise a method to detect the contour of an object, which will automatically be cut from a sheet of material.

Abstracf-A novel ridethrough compensation scheme for an industrial mixer motoridrive system is presented during voltage sags. From d-q dynamic model of the electrical and mechanical processes, Simnon simulation equations are derived. A ridethrough compensation scheme which exploits the surplus energy stored in the de-link capacitor is introduced. An open-loop control Volts per Hertz boost strategy has been used in order to compensate the speed loss during the three-phase balanced voltage sags. Both compensated and uncompensated cases haw been run and compared with simulation results. Experimental and simulation results shows reasonably good agreement.