Details
| Original language | English |
|---|---|
| Pages (from-to) | 63-67 |
| Number of pages | 5 |
| Journal | Physics Procedia |
| Volume | 70 |
| Publication status | Published - 2015 |
| Event | ICU International Congress on Ultrasonics, ICU 2015 - Metz, France Duration: 11 May 2015 → 14 May 2015 |
Abstract
Ultrasonic turning has time variant parameters due to temperature effects and changing load conditions during the process. This results in a change of the resonance frequency and vibration amplitude. To realize constant vibration amplitudes it is necessary to control the ultrasonic transducer by a suitable feedback controller. One approach to drive such a system is to use the resonance frequency as operating point in connection with an amplitude feedback controller. The advantages of resonant driven low damped systems are low voltages and high values of effective power. This paper presents a digital system used for parameter identification and model-based feedback control of the ultrasonic turning tool. During the turning process the system load depends on several factors like chip formation, material inhomogeneity, warming and tool wear. To achieve a stable process and a uniform surface of the work piece the feedback controller has to guarantee constant vibration amplitudes of the ultrasonic tool. The controller used in this paper consists of a digital resonance controller and a current amplitude controller with a frequency of 500 Hz. The current amplitude and phase between the excitation voltage and current are determined by phase sensitive demodulation (PSD). To determine the feedback parameters a model-based approach is used.
Keywords
- Averaging Model, Feedback Control, Model-based, Resonating Systems
ASJC Scopus subject areas
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In: Physics Procedia, Vol. 70, 2015, p. 63-67.
Research output: Contribution to journal › Conference article › Research › peer review
}
TY - JOUR
T1 - Model-based feedback control of an ultrasonic transducer for ultrasonic assisted turning using a novel digital controller
AU - Ille, Igor
AU - Twiefel, Jens
PY - 2015
Y1 - 2015
N2 - Ultrasonic turning has time variant parameters due to temperature effects and changing load conditions during the process. This results in a change of the resonance frequency and vibration amplitude. To realize constant vibration amplitudes it is necessary to control the ultrasonic transducer by a suitable feedback controller. One approach to drive such a system is to use the resonance frequency as operating point in connection with an amplitude feedback controller. The advantages of resonant driven low damped systems are low voltages and high values of effective power. This paper presents a digital system used for parameter identification and model-based feedback control of the ultrasonic turning tool. During the turning process the system load depends on several factors like chip formation, material inhomogeneity, warming and tool wear. To achieve a stable process and a uniform surface of the work piece the feedback controller has to guarantee constant vibration amplitudes of the ultrasonic tool. The controller used in this paper consists of a digital resonance controller and a current amplitude controller with a frequency of 500 Hz. The current amplitude and phase between the excitation voltage and current are determined by phase sensitive demodulation (PSD). To determine the feedback parameters a model-based approach is used.
AB - Ultrasonic turning has time variant parameters due to temperature effects and changing load conditions during the process. This results in a change of the resonance frequency and vibration amplitude. To realize constant vibration amplitudes it is necessary to control the ultrasonic transducer by a suitable feedback controller. One approach to drive such a system is to use the resonance frequency as operating point in connection with an amplitude feedback controller. The advantages of resonant driven low damped systems are low voltages and high values of effective power. This paper presents a digital system used for parameter identification and model-based feedback control of the ultrasonic turning tool. During the turning process the system load depends on several factors like chip formation, material inhomogeneity, warming and tool wear. To achieve a stable process and a uniform surface of the work piece the feedback controller has to guarantee constant vibration amplitudes of the ultrasonic tool. The controller used in this paper consists of a digital resonance controller and a current amplitude controller with a frequency of 500 Hz. The current amplitude and phase between the excitation voltage and current are determined by phase sensitive demodulation (PSD). To determine the feedback parameters a model-based approach is used.
KW - Averaging Model
KW - Feedback Control
KW - Model-based
KW - Resonating Systems
UR - http://www.scopus.com/inward/record.url?scp=84948674596&partnerID=8YFLogxK
U2 - 10.1016/j.phpro.2015.08.043
DO - 10.1016/j.phpro.2015.08.043
M3 - Conference article
AN - SCOPUS:84948674596
VL - 70
SP - 63
EP - 67
JO - Physics Procedia
JF - Physics Procedia
SN - 1875-3884
T2 - ICU International Congress on Ultrasonics, ICU 2015
Y2 - 11 May 2015 through 14 May 2015
ER -