In the hot rolling process, the scratches are caused by immense friction between the rollers and the steel plate, and this defect debases the productivity of steelworks. Existing hot strip mills have a structure that ...
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ISBN:
(纸本)9781479978632
In the hot rolling process, the scratches are caused by immense friction between the rollers and the steel plate, and this defect debases the productivity of steelworks. Existing hot strip mills have a structure that fixes the gap between upper and lower rollers;as a result, steel plates inevitably underwent strong friction and shock when passing through the rollers. The new concept, a flying touch method is proposed, which can control the gap between rollers for reducing scratches in hot rolling process. It is essential to simulate in finite element analysis program because the real hot rolling system is too huge and dangerous to have repetitive experiments. This paper introduces the results of the finite element analysis and a method to decrease scratches on the steel plate in hot rolling process.
In the hot rolling process, scratches are caused by immense friction between the rollers and the steel plate, and this defect reduces the quality of steelworks. To solve this problem, a flying touch method was propose...
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ISBN:
(纸本)9781467391085
In the hot rolling process, scratches are caused by immense friction between the rollers and the steel plate, and this defect reduces the quality of steelworks. To solve this problem, a flying touch method was proposed, which can control the gap between rollers for reducing scratches in hot rolling process. In a flying touch method, it is important that the gap between the rolling rolls can be control precisely and the velocity of rolling rolls can be synchronize to minimize the friction between steel plate and rolling rolls. Therefore, this paper addresses the velocity synchronize control for fly touch method. To reduce friction between steel plate and rolling rolls, this study estimates load torque of rolling rolls using torque estimation method based on SPO and control the velocity of rolling rolls according to estimated load torque. To confirm the performance of the estimated Force based velocity synchronize control, experimental evaluation is performed using down scaled simulator designed in previous study.
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.
Wireless power transmission introduced by Tesla has instrumented by many scientists of the world. This technique first was utilized as wireless communications such as radio in long range transmission. And contactless ...
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Wireless power transmission introduced by Tesla has instrumented by many scientists of the world. This technique first was utilized as wireless communications such as radio in long range transmission. And contactless transmission using inductive property was used on white goods. In 2007, MIT' lab introduced that new wireless power transmission by magnetic resonance which has about 50% efficiency and 2M transmission distances, it was a chance to refocus a new possibility of wireless power transmission. In this paper, using LC coupling compensate the short distances of contactless transmission, this simple method could transmit about 30cm distances. Using this approach, it can be solved the short transmission distances, a drawback of Electromagnetic inductive coupling method.
This research proposes a vibration pattern algorithm to implement the haptic joystick to control a mobile robot at the remote site without watching the navigation environment. When the user cannot watch the navigation...
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This paper proposes a new ball robot which has a four axis structure and four motors that directly actuate the ball to move or to maintain the balance of the robot. For the Balancing control, it is possible to use non...
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In recent years, many efforts are increasingly being made to conserve the natural environment with enhanced emission standards and air quality standards. Also there are various methods necessary to be researched to mi...
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In recent years, many efforts are increasingly being made to conserve the natural environment with enhanced emission standards and air quality standards. Also there are various methods necessary to be researched to minimize the emission of air pollutants. In particular, boilers of industrial facilities are major portions of the air pollution. The front duct which needs to be designed to reduce the gases to the electrostatic precipitator requires a bent tube, a reduction/extend tube and an auxiliary equipment, that is, a guide vane. This paper proposes an optimum design of the guide vane by a case study for electrostatic precipitator's flow uniformity. The operating conditions of this study are as follows: BMCR (Boiler Maximum Continuous Rate) and MGR (Maximum Guaranteed Rate) are 75%, 50%, and 30%;turbulent fluid dynamics model is based upon K- Ε formulation. Presentation of the computed motion of particles is found to be quite useful to predict the precipitator performance by use CFD (Computational Fluid Dynamics).
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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