Data-Driven Control Design for High Precision Servo Positioning Systems in High Volume Production
We are excited to have our first in person event in 2024 at Santa Clara Unviersity. Our guest speaker is Dr. Bashash from San Jose State University. Please see below for the details.
The design of closed-loop controllers 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 design process for a population of dual-stage hard disk drive servo actuators. A multi-rate digital controller is developed to suppress high-frequency resonant 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 stability margins and bandwidth, directly applied to the plants' frequency response data. To further enhance the performance of the closed-loop controller, the plant population is clustered into groups of similar plants, and separate controllers are designed for each cluster. Results indicate considerable improvements in the robustness and performance of the system using the clustering-based control design method.
For long-range motions, the controllers can be supplemented with polynomial reference and feedforward input trajectories for fast and smooth transition from the initial to the target position. A new polynomial design process will be presented, which reduces the transient vibrations in long-range motion by incorporating the flexibility of the system in the reference trajectory. Simulations and experimental tests indicate significant improvements in the settling time of flexible servo systems using the proposed polynomial design framework.
Date and Time
Location
Hosts
Registration
- Date: 28 Feb 2024
- Time: 06:00 PM to 08:00 PM
- All times are (UTC-08:00) Pacific Time (US & Canada)
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- Santa Clara University
- 500 El Camino Real
- Santa Clara, California
- United States 95053
- Building: Sobrato Campus for Discovery and Innovation - SCDI
- Room Number: SCDI - 2301
- Click here for Map
- Starts 20 February 2024 12:00 PM
- Ends 28 February 2024 12:00 PM
- All times are (UTC-08:00) Pacific Time (US & Canada)
- No Admission Charge
Speakers
Dr. Saeid Bashsah of San Jose State University
Biography:
Saeid Bashash received the Ph.D. Degree in Mechanical Engineering from Clemson University in 2008, and completed two postdoctoral research appointments at the University of Michigan (2009-2010) and Pennsylvania State University (2011-2012). He worked as a senior servo engineer at Western Digital from 2013 to 2015, and then joined the Department of Mechanical Engineering San Jose State University, where he is currently serving as an associate professor.
Dr. Bashash's research focuses on the modeling, system identification, and control of dynamic systems with applications in mechatronics and energy systems. He is the author and co-author of over 70 journal and conference publications in this field.
Address:California, United States
Agenda
6:00 - 6:30 PM : Networking - Light dinner
6:30 - 7:30 PM : Talk and Q&A
7:30 - 8:00 PM : Networking
A free parking pass for two hours can be provided please let us know when you register.
Please Register so we have the right headcount for food and location. The limit is 30.