LLC resonant converter is used to control laser power density in ruby laser power supply. Zero voltage switching(ZVS) is implemented to minimize the switching loss by the LLC resonant converter. Laser output power is ...
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LLC resonant converter is used to control laser power density in ruby laser power supply. Zero voltage switching(ZVS) is implemented to minimize the switching loss by the LLC resonant converter. Laser output power is investigated and experimented by changing the output current. That current is controled by the charging voltage of capacitor. From those results, we obtained the maximum laser output of 1.94J at the discharge current of 860A and the pulse repetition rate of 1Hz.
This paper proposes a robust 3D (dimension) map building system for a mobile robot using a LRF (Laser Range Finder). Instead of the expensive and bulky 3D laser scanner, the LRF can be utilized and installed on the mo...
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This paper proposes a robust 3D (dimension) map building system for a mobile robot using a LRF (Laser Range Finder). Instead of the expensive and bulky 3D laser scanner, the LRF can be utilized and installed on the mobile robot for the map building and the autonomous navigation. This research, the scanning operations are performed while the mobile robot moved on the slanted surface and ground without stops. The motion of the mobile robot is transformed into the scanning surface in the process of forming the 3D map. The experimental results reveal that the improved accuracy of navigation for the mobile robot in the real time scanning of the environment.
This paper proposes improvement for performance of a low-cost Pedestrian Dead-Reckoning(PDR) System through calibration and analysis of sensor. It is applied that PDR System for estimating pedestrian's position in...
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ISBN:
(纸本)9781479957378
This paper proposes improvement for performance of a low-cost Pedestrian Dead-Reckoning(PDR) System through calibration and analysis of sensor. It is applied that PDR System for estimating pedestrian's position in the area not being able to be received. also sensor's error is removed by using angle compensation technique and performance of system is improved by analysis of PDR system. Consequently, position of pedestrian is estimated by applying the improved value of sensor and result of angle analysis to PDR system. Experiments were conducted to verify the proposed system. Experimental results within 2% of range error, RMS position error of less than 3% showed superior performance.
Path planning of mobile robot has a purpose to design an optimal path from an initial position to a target point. Minimum driving time, minimum driving distance and minimum driving error might be considered in choosin...
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In this paper proposes a visual manipulation method that incorporates computation of 3D object position from characteristic disparity of stereo image. First, we proceed to an image revision work using the calibration....
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In this paper, tightly coupled system is designed using multi-GPS receivers based on the Extended Kalman Filter(EKF). Typically, GPS has the instantaneous error and INS has the disadvantage that the cumulative error o...
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In this paper, the obstacle recognition research is conducted by using vibration pattern. Remotely, the user can perceive the surroundings sensed by the obstacle recognition unit. The vibration motor was installed at ...
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A haptic device is proposed which gives the user feedback information on their location and orientation of the obstacle through the mobile robot that detects the obstacle in an environment where the user cannot *** ro...
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A haptic device is proposed which gives the user feedback information on their location and orientation of the obstacle through the mobile robot that detects the obstacle in an environment where the user cannot *** robot recognizes the exact position of the obstacle through configuring the nested ultrasonic sensor and giving feedback information to the haptic *** haptic device consisting of five vibration motors can realize the haptic through the vibration of user's finger using the position information of the obstacle received *** addition,it has high accuracy to recognize the surrounding environment and realizes the various situations with the fuzzy controller and the nested ultrasonic sensors.
The ruby laser has been used for medical laser. Especially, it is useful for skin regeneration. Medical ruby laser needs light energy more than 1J. Also, it needs to discharge light energy per 1 second. So laser syste...
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