scholarly journals Design and Simulation Analysis of Linear Loading System Based on Axial-Magnetized Voice-Coil Motor

2017 ◽  
Author(s):  
Zhongliang Zhang ◽  
Liang Yan
Keyword(s):  
Simulation Analysis ◽  
Voice Coil Motor ◽  
Loading System ◽  
Linear Loading

Innovative AF VCM Actuator for Smart Phone Camera Module

2015 ◽  
Author(s):  
Chien-Sheng Liu ◽  
Hong-Fei Li ◽  
Min-Kai Lee
Keyword(s):  
Permanent Magnet ◽  
Simulation Analysis ◽  
Smart Phone ◽  
Voice Coil Motor ◽  
Industrial Applications ◽  
Experimental Results ◽  
Compression Force ◽  
Commercial Software ◽  
Electromagnetic Structure ◽  
Promising Solution

In the present study, we propose an innovative autofocusing (AF) voice coil motor (VCM) actuator to replace the traditional AF VCM actuators with springs for smart phone camera modules. In the proposed electromagnetic structure, the magnetic pre-compression force between the two guide rods and permanent magnet is used to replace the restoring resilience force of the two springs in the traditional AF VCM actuators. The proposed AF VCM actuator is characterized numerically using the simulation analysis of commercial software Infolytica MagNet and then verified experimentally using a laboratory-built prototype. The experimental results presented in this study show compared to traditional AF VCM actuator, the proposed AF VCM actuator has excellent AF performance to be able to replace the traditional AF VCM actuators. As a result, the proposed device provides a promising solution for smart phone camera modules or industrial applications.

Research on Control Algorithm of Electric Loading System

2013 ◽  
Vol 579-580 ◽  
pp. 818-822
Author(s):  
Xiang Zhang ◽  
Guang Lin Wang ◽  
Xu Dong Pan ◽  
Hai Bing Xie
Keyword(s):  
Pid Control ◽  
Control Algorithm ◽  
Simulation Analysis ◽  
Feed Forward ◽  
Complex Control ◽  
Electric Loading ◽  
Loading System ◽  
Disturbance Torque

The disturbance torque which is caused by the interference of the motor position has observably impact on accuracy of the loading system. According to unstable loading channel and disturbance torque, this paper use a complex control algorithm of differential forward PID control and feed-forward compensation. At the end of this paper, the simulation analysis results show that the feed-forward compensation can observably eliminate the influence of the disturbance torque, and improve the accuracy of the loading system.

Evaluation of material failure under a linear loading system

1981 ◽  
Vol 13 (7) ◽  
pp. 821-827
Author(s):  
P. V. Tikhomirov ◽  
S. P. Yushanov
Keyword(s):  
Material Failure ◽  
Loading System ◽  
Linear Loading

scholarly journals Research on Control Algorithm of Electric Linear Loading System

2018 ◽  
Vol 220 ◽  
pp. 08007
Author(s):  
Jianjie Lei ◽  
Yuanxun Fan ◽  
Weidong Pan ◽  
Dejia Tang ◽  
Jian Tao ◽  
...  
Keyword(s):  
Control Algorithm ◽  
Fuzzy Controller ◽  
Dynamic Performance ◽  
Reference Value ◽  
Response Speed ◽  
Ball Screw ◽  
Current Loop ◽  
System Combination ◽  
Loading System ◽  
Linear Loading

This paper mainly focused on the problems of low loading accuracy in electric linear loading system, Firstly, the mathematical model is done on loading motor, loading motor driver and ball screw in the system. Then, the current loop proportional control is introduced, which improves the response speed of the load motor; In order to improve the loading accuracy and restrain excess force, a parallel algorithm based on fuzzy PID and repetitive control is designed in the force loop. The fuzzy controller improves the dynamic performance and anti-interference ability of the system. The repetitive controller periodically adjusts the deviation, which reduces the steady-state error of the system. Combination of the two controller results in good dynamic and static characteristics. The simulation results show that the proposed control algorithm is feasible, which has a certain engineering reference value.

An improved collapse axis on the R6 FAD for combined tension and bending loading

1993 ◽  
Vol 28 (1) ◽  
pp. 23-29
Author(s):  
N ø Kristiansen ◽  
C E Turner
Keyword(s):  
Plastic Hinge ◽  
Constraint Factor ◽  
True Path ◽  
Loading System ◽  
Edge Notch ◽  
Path Lengths ◽  
The Moment ◽  
Moment Load ◽  
Bending Loading ◽  
Linear Loading

Experimental and computational studies were made of a number of single edge notch (SEN) specimens loaded through eccentric pins with notch depth ratios 0.21 and 0.52. It was found that as the applied load was increased the formation of a plastic hinge mechanism caused the ligament to shift sideways and in turn alter the ratio of bending to tension loading. The two different assumptions, constant and variable bending to tension ratio, gave very different paths in the moment-load ( M-Q) space, and failure lines when plotted on the R6 Fracture Analysis Diagram (FAD). An improved expression for normalized load, Sr, for SEN geometries under a linear loading system was obtained by including a plastic constraint factor in the uncreacked lower bound solution. For the pin-loaded SEN specimens under a non-linear loading system, it was shown that Sr based on ‘true path lengths’ in the yield diagram gave a failure curve which was in good agreement with the R6 Rev3 solution.

Computer simulation study about the dependence of amorphous silicon photonic waveguides efficiency on the material quality

2020 ◽  
Vol 90 (3) ◽  
pp. 30502
Author(s):  
Alessandro Fantoni ◽  
João Costa ◽  
Paulo Lourenço ◽  
Manuela Vieira
Keyword(s):  
Amorphous Silicon ◽  
High Throughput Screening ◽  
Simulation Analysis ◽  
Low Cost ◽  
Deposition Process ◽  
Large Area ◽  
Sidewall Roughness ◽  
Sensing Applications ◽  
Fabrication Defects ◽  
The Impact

Amorphous silicon PECVD photonic integrated devices are promising candidates for low cost sensing applications. This manuscript reports a simulation analysis about the impact on the overall efficiency caused by the lithography imperfections in the deposition process. The tolerance to the fabrication defects of a photonic sensor based on surface plasmonic resonance is analysed. The simulations are performed with FDTD and BPM algorithms. The device is a plasmonic interferometer composed by an a-Si:H waveguide covered by a thin gold layer. The sensing analysis is performed by equally splitting the input light into two arms, allowing the sensor to be calibrated by its reference arm. Two different 1 × 2 power splitter configurations are presented: a directional coupler and a multimode interference splitter. The waveguide sidewall roughness is considered as the major negative effect caused by deposition imperfections. The simulation results show that plasmonic effects can be excited in the interferometric waveguide structure, allowing a sensing device with enough sensitivity to support the functioning of a bio sensor for high throughput screening. In addition, the good tolerance to the waveguide wall roughness, points out the PECVD deposition technique as reliable method for the overall sensor system to be produced in a low-cost system. The large area deposition of photonics structures, allowed by the PECVD method, can be explored to design a multiplexed system for analysis of multiple biomarkers to further increase the tolerance to fabrication defects.

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