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In order to attenuate the added noise by electric network used by myoelectric signals acquisition equipment, in this research work, it is developed an IIR digital filter implemented on FPGA. This filter removes a specific spectra frequencies without adding noise to the signal, which allows a better performance in the usage that is given to the signals. The filter coefficients are taken and proved...
The present work shows the design and implementation of a controller based on Fuzzy Logic for pH regulation using an S7-1200 Programmable Logic Controller (PLC) as a processing element. The inputs of the controller are the current error (desired pH - current pH) and the rate of change in error (current error - previous error). On the other hand, the output is given by the activation time of an on-off...
This paper presents an implementation technique of a high resolution Unipolar Pulse Width Modulator (UPWM) for power inverter applications. Unipolar switched inverter has the advantage of a higher efficiency and lower harmonic distortion. The technique was tested in a 2kW inverter with a typical LC filter and it was achieved a Total Harmonic Distortion below 2%. Simulations and experimental results...
Many schemes have been proposed to control induction motors, however all these systems this kind of motors consist in complex systems. One of the most precise control schemes is the Field Oriented Control (FOC), although Scalar Control (SC) is simple compared to the construction of the FOC and others. In this work a SC and a FOC for induction motors are implemented. The goal of this study is to identify...
The face segmentation is an important step for face recognition because it is not only locates the face but also get a correct segmentation for a fuller region possible. In this paper an application of the viscous opening along the skin color for segmentation and obtaining the limit of facial contour is presented. The proposal consists of two stages: the first one use the classification of pixels...
In this paper, an industrial robot interface is presented. This is suitable for different subjects related to robotics including robot kinematics control systems and actuators. Hardware and software stages are depicted. Besides, as a manner to teach students to select and calculate electrical components for a robot, it is presented a retrofit of a commercial six-degree of freedom robot arm from Nachi...
This paper describes an analysis method for achieving control torque and speed with vector control for induction motors. An indirect field-oriented output feedback motor controller is presented; it is suitable for low-cost applications. A current model control is used to sense back electromotive force (back-EMF) by means of an analog to digital converter (ADC); its simulation and filtering are discussed...
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