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Your search keyword '"Po Kuang Chang"' showing total 4 results
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4 results on '"Po Kuang Chang"'

1. Intelligent Fuzzy Ziegler-Nichols-Based Controller Design of a SPM System with Parameters Variation

Author

Kun Tai Cho, Jium-Ming Lin, and Po Kuang Chang

Subjects
Engineering, business.industry, Mechanical Engineering, Control engineering, Ziegler–Nichols method, Fuzzy logic, Scanning probe microscopy, Mechanics of Materials, Robustness (computer science), Control theory, Torque, General Materials Science, Actuator, business, Stylus
Abstract

This research applied a stylus probe without balance and lever arm as in the previous design of a contact-force-controlled Scanning Probe Microscope (SPM) system. The controller integrated both Ziegler-Nichols-based and intelligent fuzzy methods; thus the systems relative stability can be reserved under the nominal conditions. In addition, one can see that both hysteresis and parameter variation effects of the force actuator can be reduced. Comparing the results with the traditional Ziegler-Nichols-based controller by simulation, one can see that the proposed systems are much more robust.

Published
2012

2. Ziegler-Nichols Based Intelligent Fuzzy PID Controller Design of a SPM System with Parameters Variation

Author

Jium-Ming Lin and Po Kuang Chang

Subjects
Engineering, business.industry, Bode plot, General Engineering, PID controller, Control engineering, Root locus, Variation (game tree), Relative stability, Scanning probe microscopy, Control theory, Fuzzy pid controller, Actuator, business
Abstract

This research is to extend Ziegler-Nichols based PID controller design method to the intelligent fuzzy PID controller design of a Scanning Probe Microscope (SPM) system, thus the relative stability can be reserved. In addition, one can see the hysteresis and parameters variation effects of the force actuator can be reduced. This improvement had been verified by practical implementation. Comparing the results with the design with the Ziegler-Nichols based PID controller, one can see that the proposed system is more robust.

Published
2011

3. Eliminating Hysteresis Effect of Force Actuator for Profiler Design with Rate Inner Loop Compensation

Author

Jium-Ming Lin and Po Kuang Chang

Subjects
Materials science, Mechanical Engineering, Linear variable differential transformer, Condensed Matter Physics, Load cell, Constant linear velocity, Transducer, Mechanics of Materials, Control theory, General Materials Science, Transient (oscillation), Actuator, Stylus, Inner loop
Abstract

The key point of this research is to use Linear Velocity Transducer (LVT) to detect the vertical velocity of the stylus probe for the inner-loop damping and transient control of a force actuator. This improvement has been verified by MATLAB simulation and practical implementation of a surface profiler to reduce the hysteresis effect of the force actuator.

Published
2008

4. Scanning probe microscope system design with Linear Velocity Transducer for feedback compensation

Author

Jium-Ming Lin and Po-Kuang Chang

Subjects
Constant linear velocity, Engineering, Scanning probe microscopy, Transducer, Control theory, business.industry, Acoustics, Linear variable differential transformer, Transient (oscillation), Stylus, Actuator, business, Load cell
Abstract

This research is to use linear velocity transducer (LVT) to detect the vertical velocity of the stylus probe for the inner-loop damping and transient control of a force actuator. This improvement has been verified by Matlab simulation and practical implementation of a surface profiler to reduce the hysteresis effect of the force actuator.

Published
2008

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