Experimental Verification of the Dynamic Performance of a Footbridge Under High Pedestrian Densities

2017 ◽  
Author(s):  
Katrien Van Nimmen ◽  
Peter Van Den Broeck
Keyword(s):  
Experimental Verification ◽  
Dynamic Performance

scholarly journals Experimental Verification of Three-Degree-of-Freedom Electromagnetic Actuator for Image Stabilization

Sensors ◽  
2020 ◽  
Vol 20 (9) ◽  
pp. 2485
Author(s):  
Akira Heya ◽  
Katsuhiro Hirata
Keyword(s):  
Experimental Verification ◽  
Dynamic Performance ◽  
Autonomous Systems ◽  
Degree Of Freedom ◽  
Electromagnetic Actuator ◽  
Image Stabilization ◽  
Three Phase ◽  
Autonomous Cars ◽  
Three Degree Of Freedom ◽  
And Control

Image deteriorations due to vibrations have become a problem in autonomous systems such as unmanned aerial vehicles, robots, and autonomous cars. To suppress the vibration, a camera stabilizer using a gimbal mechanism is widely used. However, the size and weight of the system increase because the conventional image stabilization systems require some actuators and links to drive in multi-axes. In order to solve these problems, we proposed a novel three-degree-of-freedom (3DOF) electromagnetic actuator for image stabilization. The actuator can be driven by only three-phase and has a simple structure and control system. This paper describes the experimental verification of the proposed actuator. The torque characteristics are clarified, and the analysis and measured torque characteristics are compared to verify the analysis validity. For verifying the dynamic performance, the frequency characteristics are measured. The effectiveness of the proposed magnetic structure and operating principle are investigated.

Study and design of dual stator permanent magnet machine with spoke-type configurations using phase-group concentrated-coil windings

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1381-1389
Author(s):  
Dezhi Chen ◽  
Chengwu Diao ◽  
Zhiyu Feng ◽  
Shichong Zhang ◽  
Wenliang Zhao
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnets ◽  
Low Cost ◽  
Dynamic Performance ◽  
Torque Ripple ◽  
Permanent Magnet Machine ◽  
Torque Density ◽  
Phase Group ◽  
High Torque ◽  
Simulation Results

In this paper, a novel dual-stator permanent magnet machine (DsPmSynM) with low cost and high torque density is designed. The winding part of the DsPmSynM adopts phase-group concentrated-coil windings, and the permanent magnets are arranged by spoke-type. Firstly, the winding structure reduces the amount of copper at the end of the winding. Secondly, the electromagnetic torque ripple of DsPmSynM is suppressed by reducing the cogging torque. Furthermore, the dynamic performance of DsPmSynM is studied. Finally, the experimental results are compared with the simulation results.

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