Pincin, Santiago J. (2022) Diseño y control de un dispositivo activo para la reducción de vibraciones en el mecanizado de piezas / Desing and control of an active device for vibration attenuation on part machining. Maestría en Ingeniería, Universidad Nacional de Cuyo, Instituto Balseiro.
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| PDF (Tesis) Español 10Mb |
Resumen en español
En esta tesis se estudia el fenómeno de vibraciones en el mecanizado y se proponen soluciones para reducirlas. Las vibraciones en el mecanizado causan una mala terminación superficial, desgaste prematuro de herramientas, peores y hasta inaceptables tolerancias de fabricación y todo lo cual repercute finalmente en una poco aceptable economía del mecanizado y una productividad ineficiente. Si bien hay diversas estrategias para mitigar el efecto de las vibraciones en el mecanizado, en el presente trabajo se aborda el problema en el contexto del control activo de las vibraciones, donde un actuador y un sensor se utilizan junto a un algoritmo de control para incrementar el amortiguamiento del sistema. Con el fin de estudiar el uso de técnicas de control activo de vibraciones, se propone y realiza una facilidad1 de pruebas junto con su electrónica. Posteriormente se diseñan e implementan dos tipos diferentes de actuadores electromagnéticos, uno inercial y uno no inercial, para ser utilizados sobre la facilidad. Partiendo de la formulación de barras finitas, se realizan dos modelos teóricos de la facilidad, y se validan mediante identificación con señales de excitación típicas chirp, pseudorandom y respuesta libre. Mediante el uso de control activo de vibraciones, se diseñan e implementan controladores de realimentación directa de velocidad (DVF) y un controlador basado en un filtro notch. Los resultados experimentales obtenidos muestran que los actuadores diseñados junto con los controladores propuestos tienen potencial para el control activo de vibraciones
Resumen en inglés
In this thesis the phenomenon of vibrations in machining is studied and solutions are proposed to reduce them. Vibrations in machining cause poor surface finish, premature tool wear, worse and even unacceptable manufacturing tolerances, all of which ultimately result in poor machining economy and inefficient productivity. Although there are several strategies to mitigate the effect of vibrations in machining, this work addresses the problem in the context of active vibration control, where an actuator and sensor are used in conjunction with a control algorithm to increase the damping of the system. In order to study the use of active vibration control techniques, a test installation together with its electronics is proposed and carried out. Subsequently, two different types of electromagnetic actuators, one inertial and the other non-inertial, are designed and implemented to be used in the installation. From the formation of finite rods, two theoretical models of the installation are developed, and they are validated by identification with typical chirp, pseudorandom and free response excitation signals. Using active vibration control, direct velocity feedback (DVF) controllers and a controller based on a notch filter are designed and implemented. The experimental results obtained show that the actuators designed together with the proposed controllers have potential for active vibration control.
| Tipo de objeto: | Tesis (Maestría en Ingeniería) |
|---|---|
| Palabras Clave: | [Vibration control; Control de vibración; Active control; Control activo; Inertial actuator; Actuador inercial; Electromagnetic actuator; Actuador electromagnético; Chatter] |
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| Materias: | Ingeniería mecánica > Vibraciones |
| Divisiones: | Energía nuclear > Ingeniería nuclear > Termohidráulica |
| Código ID: | 1082 |
| Depositado Por: | Tamara Cárcamo |
| Depositado En: | 14 Jul 2022 13:39 |
| Última Modificación: | 14 Jul 2022 13:39 |
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