S22  Mecatrônica    Titulo: DESIGN OF A DIGITAL CONTROLLER FOR A SUBMICROMETRIC POSITIONING SYSTEM   Resumo : THIS PAPER CONCERNS A DIGITAL CONTROLLER DESIGN AND SIMULATION FOR POSITION CONTROL OF A SUB-MICROMETRIC SYSTEM OF HIGH DYNAMIC RESPONSE. THE SYSTEM IS ASSEMBLED ON A TABLE WITH FLEXURAL SPRING GUIDES DRIVEN BY A PIEZOELECTRIC ACTUATOR, AND WITH EXTENSOMETERS FOR LINEAR POSITION MEASUREMENT. THE DISCRETIZATION OF THE SUB-MICROMETRIC POSITIONING SYSTEM THROUGH THE PIEZOELECTRIC ACTUATOR, AND ITS MECHANICAL SUB-SYSTEM WAS SUCCESSFULLY PERFORMED. THE DYNAMIC RESPONSE OF THE PLANT WITH ZERO-ORDER HOLD WAS VERY GOOD, WITH AN OVERSHOOT OF LESS THAN 20%, SAME AS RESPONSE OF THE CONTINUOUS SYSTEM. THE DESIGN OF A PD DISCREET CONTROLLER RESULTED IN A EVEN BETTER DYNAMIC PERFORMANCE, WITH RISE AND SETTLING TIMES LESS THAN THOSE OBTAINED WITH THE DISCRETIZATION OF THE CONTINUOUS SYSTEM. KEY WORDS: DIGITAL CONTROLLER, SUBMICROMETRIC POSITIONING, DISCRETIZATION, PIEZOELECTRIC ACTUATOR, PD CONTROLLER.     Autores : Martin, Carlos Alberto 0 Tavares, Ricardo Compiani Weingaertner, Walter Lindolfo     Trabalho Completo :   COBEM99 | Comissão  Organizadora | Palestras | Sessões Técnicas | Autor | Simpósios e Sessões Especiais | Revisores |  Título  dos  Trabalhos | Local