BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:America/Los_Angeles BEGIN:DAYLIGHT DTSTART:20240310T030000 TZOFFSETFROM:-0800 TZOFFSETTO:-0700 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:PDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20231105T010000 TZOFFSETFROM:-0700 TZOFFSETTO:-0800 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:PST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20240301T051616Z UID:3875AB53-0D89-4579-8C0A-CA3113A9420A DTSTART;TZID=America/Los_Angeles:20240228T180000 DTEND;TZID=America/Los_Angeles:20240228T200000 DESCRIPTION:The design of closed-loop controllers for high precision servo positioning systems in high-volume production is severely challenged by th e tradeoff between the controller's robustness and performance. This prese ntation will review an industrial control design process for a population of dual-stage hard disk drive servo actuators. A multi-rate digital contro ller is developed to suppress high-frequency resonant modes and track low- frequency desired trajectories. The controller includes a proportional-int egral controller cascaded with a set of notch and peak filters. The contro ller parameters are tuned via an optimization process based on a number of closed-loop system objectives such as stability margins and bandwidth\, d irectly applied to the plants' frequency response data. To further enhance the performance of the closed-loop controller\, the plant population is c lustered into groups of similar plants\, and separate controllers are desi gned for each cluster. Results indicate considerable improvements in the r obustness and performance of the system using the clustering-based control design method.\n\nFor long-range motions\, the controllers can be supplem ented with polynomial reference and feedforward input trajectories for fas t and smooth transition from the initial to the target position. A new pol ynomial design process will be presented\, which reduces the transient vib rations in long-range motion by incorporating the flexibility of the syste m in the reference trajectory. Simulations and experimental tests indicate significant improvements in the settling time of flexible servo systems u sing the proposed polynomial design framework.\n\nSpeaker(s): Dr. Saeid Ba shsah\n\nAgenda: \n6:00 - 6:30 PM : Networking - Light dinner\n\n6:30 - 7: 30 PM : Talk and Q&A\n\n7:30 - 8:00 PM : Networking\n\nRoom: SCDI - 2301\, Bldg: Sobrato Campus for Discovery and Innovation - SCDI\, Santa Clara Un iversity\, 500 El Camino Real \, Santa Clara\, California\, United States\ , 95053 LOCATION:Room: SCDI - 2301\, Bldg: Sobrato Campus for Discovery and Innovat ion - SCDI\, Santa Clara University\, 500 El Camino Real \, Santa Clara\, California\, United States\, 95053 ORGANIZER:mkhanbaghi@scu.edu SEQUENCE:33 SUMMARY:Data-Driven Control Design for High Precision Servo Positioning Sys tems in High Volume Production URL;VALUE=URI:https://events.vtools.ieee.org/m/408030 X-ALT-DESC:Description: <br /><p><span style="font-size: 14pt\; font-family : 'times new roman'\, times\, serif\;">The design of closed-loop controlle rs for high precision servo positioning systems in high-volume production is severely challenged by the tradeoff between the controller's robustness and performance. This presentation will review an industrial control desi gn process for a population of dual-stage hard disk drive servo actuators. A multi-rate digital controller is developed to suppress high-frequency r esonant modes and track low-frequency desired trajectories. The controller includes a proportional-integral controller cascaded with a set of notch and peak filters. The controller parameters are tuned via an optimization process based on a number of closed-loop system objectives such as stabili ty margins and bandwidth\, directly applied to the plants' frequency respo nse data. To further enhance the performance of the closed-loop controller \, the plant population is clustered into groups of similar plants\, and s eparate controllers are designed for each cluster. Results indicate consid erable improvements in the robustness and performance of the system using the clustering-based control design method.&nbsp\;</span></p>\n<p><span st yle="font-size: 14pt\; font-family: 'times new roman'\, times\, serif\;">F or long-range motions\, the controllers can be supplemented with polynomia l reference and feedforward input trajectories for fast and smooth transit ion from the initial to the target position. A new polynomial design proce ss will be presented\, which reduces the transient vibrations in long-rang e motion by incorporating the flexibility of the system in the reference t rajectory. Simulations and experimental tests indicate significant improve ments in the settling time of flexible servo systems using the proposed po lynomial design framework.&nbsp\;</span></p><br /><br />Agenda: <br /><p>6 :00 - 6:30 PM : Networking - Light dinner</p>\n<p>6:30 - 7:30 PM : Talk an d Q&amp\;A</p>\n<p>7:30 - 8:00 PM : Networking</p> END:VEVENT END:VCALENDAR