A novel method for the Doppler-shift correction of the measure and control signal

2012 ◽  
Author(s):  
Fang Zhang ◽  
Jia Liu ◽  
Wei Chen ◽  
Huiling Guo ◽  
Nannan Gai
Keyword(s):  
Doppler Shift ◽  
Control Signal ◽  
Novel Method ◽  
And Control

scholarly journals A Novel Method to Enhance Dynamic Rhinoplasty Outcomes: Double “V” Carving for Alloplastic Grafts

2019 ◽  
Vol 99 (4) ◽  
pp. 262-267 ◽  
Author(s):  
Shan-shan Bai ◽  
Dong Li ◽  
Liang Xu ◽  
Hui-chuan Duan ◽  
Jie Yuan ◽  
...  
Keyword(s):  
Practical Method ◽  
Control Group ◽  
Augmentation Rhinoplasty ◽  
3 Dimensional ◽  
Asian Patients ◽  
Subjective Evaluations ◽  
Group A ◽  
Novel Method ◽  
Group B ◽  
And Control

Augmentation rhinoplasty is one of the most common plastic surgery procedures performed in Asia. Most Asian patients desire not only a natural-looking nose but also a nose with natural feel. Achieving such rhinoplasty outcomes with grafts has been a challenge for surgeons due to rigidity of grafting material. We propose a novel technique to address this limitation. A total of 200 healthy adult patients aged from 18 to 25 years were randomly chosen and classified into 5 groups: A, B, C, D, and control. Each group included 40 patients. The patients assigned to conventional grafting underwent rhinoplasty with L-shaped silicone prosthesis (group A) or expanded polytetrafluoroethylene (e-PTFE; group B), using traditional carving methods. The patients assigned to dynamic rhinoplasty underwent silicone (group C) or e-PTFE grafts (group D) using the modified double “V” method, which involves removing bilateral wedges from the graft to decrease rigidity. Patients in control group do not undergo the surgery. A 3-dimensional raster surface scanner was used to capture the images of the patients accurately and nasal mobility was measured. Subjective evaluations were carried out by a series of questionnaires asked to the patients. The angle α of nasal mobility was significantly lower in conventional grafting (23.09 [5.34] mm for silicone and 17.88 [4.96] mm for e-PTFE) versus the “V” carving (30.53 [3.76] mm for silicone and 23.77 [4.53] mm for e-PTFE; P < .05). The double “V” carving method is a simple, effective, and practical method for improving dynamic nasal outcomes in patient undergoing augmentation rhinoplasty.

Thermal Analysis and Control for Sputtering Deposition of High-Tc Superconducting Films

1992 ◽  
Vol 114 (1) ◽  
pp. 255-263 ◽  
Author(s):  
M. I. Flik ◽  
B. I. Choi ◽  
A. C. Anderson ◽  
A. C. Westerheim
Keyword(s):  
Substrate Temperature ◽  
Radiation Heat Transfer ◽  
Front Surface ◽  
Film Deposition ◽  
High Tc ◽  
Sputtering Deposition ◽  
Single Target ◽  
Thin Film Optics ◽  
Novel Method ◽  
And Control

For the preparation of high-quality films of high-Tc superconductors (HTSC) on crystalline substrates, it is necessary to control the substrate temperature accurately during deposition. This study shows that thermal radiation heat transfer in the deposition chamber governs the substrate temperature. The application of thin-film optics yields the emittance of the substrate holder-substrate-film composite as a function of the thickness of the growing film. In a single-target off-axis sputtering system, the substrate temperature is measured during film deposition using a novel method for the attachment of a thermocouple to the substrate front surface. For constant heater power, the measurements show a decrease of the substrate temperature, in agreement with the theoretical prediction. Based on the substrate emittance variation determined in this work, a pyrometric in-situ temperature measurement technique can be developed.

scholarly journals Precise control and measurement of solid–liquid interfacial temperature and viscosity using dual-beam femtosecond optical tweezers in the condensed phase

2016 ◽  
Vol 18 (37) ◽  
pp. 25823-25830 ◽  
Author(s):  
Dipankar Mondal ◽  
Paresh Mathur ◽  
Debabrata Goswami
Keyword(s):  
Optical Tweezers ◽  
Condensed Phase ◽  
Precise Control ◽  
Dual Beam ◽  
Novel Method ◽  
Interfacial Temperature ◽  
Solid Liquid Interface ◽  
Solid Liquid ◽  
And Control

We present a novel method of microrheology based on femtosecond optical tweezers, which in turn enables us to directly measure and controlin situtemperature at microscale volumes at the solid–liquid interface.

scholarly journals Manipulation of Miniature and Microminiature Bodies on a Harmonically Oscillating Platform by Controlling Dry Friction

Micromachines ◽  
2021 ◽  
Vol 12 (9) ◽  
pp. 1087
Author(s):  
Sigitas Kilikevičius ◽  
Algimantas Fedaravičius ◽  
Virginija Daukantienė ◽  
Kristina Liutkauskienė ◽  
Linas Paukštaitis
Keyword(s):  
Dry Friction ◽  
The Body ◽  
Control Parameters ◽  
Friction Control ◽  
Vibrating Plates ◽  
Directional Motion ◽  
Novel Method ◽  
Nonprehensile Manipulation ◽  
Motion Characteristics ◽  
And Control

Currently used nonprehensile manipulation systems that are based on vibrational techniques employ temporal (vibrational) asymmetry, spatial asymmetry, or force asymmetry to provide and control a directional motion of a body. This paper presents a novel method of nonprehensile manipulation of miniature and microminiature bodies on a harmonically oscillating platform by creating a frictional asymmetry through dynamic dry friction control. To theoretically verify the feasibility of the method and to determine the control parameters that define the motion characteristics, a mathematical model was developed, and modeling was carried out. Experimental setups for miniature and microminiature bodies were developed for nonprehensile manipulation by dry friction control, and manipulation experiments were carried out to experimentally verify the feasibility of the proposed method and theoretical findings. By revealing how characteristic control parameters influence the direction and velocity, the modeling results theoretically verified the feasibility of the proposed method. The experimental investigation verified that the proposed method is technically feasible and can be applied in practice, as well as confirmed the theoretical findings that the velocity and direction of the body can be controlled by changing the parameters of the function for dynamic dry friction control. The presented research enriches the classical theories of manipulation methods on vibrating plates and platforms, as well as the presented results, are relevant for industries dealing with feeding, assembling, or manipulation of miniature and microminiature bodies.

scholarly journals Swing-Up Problem of an Inverted Pendulum – Energy Space Approach

2020 ◽  
Vol 22 (1) ◽  
pp. 33-40
Author(s):  
Marek Balcerzak
Keyword(s):  
Numerical Simulation ◽  
Differential Evolution ◽  
Control Algorithm ◽  
Inverted Pendulum ◽  
State Constraints ◽  
Energy Space ◽  
Control Signal ◽  
And Control ◽  
Space Approach

AbstractThis paper describes a novel, energy space based approach to the swing-up of an inverted pendulum. The details of the swing-up problem have been described. Equations of the velocity-controlled have been presented. Design of the controller based on energy space notion has been elaborated. The control algorithm takes into account state constraints and control signal constraints. Parameters of the controller have been optimized by means of the Differential Evolution method. A numerical simulation of the inverted pendulum driven by the proposed controller has been conducted, its results have been presented and elaborated. The paper confirms that the proposed method results in a simple and effective swing-up algorithm for a velocity-controlled inverted pendulum with state constraints and control signal constraints.

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