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Control of a Direct Current Motor Using Time Scaling
Control de un motor de corriente continua usando escalamiento temporal
DOI:
https://doi.org/10.15446/ing.investig.v40n3.80124Keywords:
DC motor, Time Scaling Control, plant identification, neural network, intelligent control (en)motor DC, Control con Escalamiento Temporal, identificación de plantas, redes neuronales, control inteligente (es)
Humans naturally control their surrounding space. However, that capacity has not been fully used to build better intelligent controllers, mainly because the reaction time of a person limits the number of industrial applications. In this paper, the author propose a method to overcome the problem of reaction time for a human in the control loop. This method, called Time Scaling Control, starts by modifying the constant times of the plant’s model to the point where control is comfortable for a human. Then, the controller acquires the knowledge that was expressed during the human control stage and places it in a Neural Network, which controls both scaled and original plants. Time Scaling Control highly improves the control performance compared with a PID, in this case demonstrated by the control of a direct current motor, which cannot be controlled by a human without time scaling control due to the speed of the system.
Los humanos controlan el espacio que los rodea de manera natural. Sin embargo, esta capacidad no se ha usado completamente para construir mejores controladores inteligentes, principalmente porque el tiempo de reacción de una persona limita el número de posibles aplicaciones industriales. En este artículo se propone un método para eliminar el problema del tiempo de reacción de un humano en un lazo de control. Este método, llamado Control con Escalamiento Temporal, comienza por modificar las constantes de tiempo del modelo de la planta, hasta el punto en el que el control sea cómodo para un humano. Entonces, el controlador adquiere el conocimiento que fue expresado durante la etapa de control humano y lo ubica en una red neuronal, la cual controla tanto la planta escalizada como la planta original. El Control con Escalamiento Temporal mejora bastante el desempeño del control en comparación con un PID, demostrado en este caso por el control de un motor de corriente directa, el cual no puede ser controlado por una persona sin el uso de escalamiento temporal por la velocidad del motor.
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