Students' performance evaluation turns out to be seriously difficult. The purpose of this paper is to explore students' characteristics that are related to the student's CGPA (Cumulative Grade Point Averag...
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In order to realize robotized automatic tunneling, this paper have studied the influencing factors of the roadheader cutting trajectory and put forward an autonomous correction method. Considered the efficiency of cut...
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ISBN:
(纸本)9781509064151;9781509064144
In order to realize robotized automatic tunneling, this paper have studied the influencing factors of the roadheader cutting trajectory and put forward an autonomous correction method. Considered the efficiency of cutting and the quality of section forming, the uncertain factors that affected the cutting trajectory included the dirt band, the control system and the position and posture of roadheader, and then the constraint condition of each influencing factor have been determined. Aiming at the influencing factors, the method of cutting trajectory correction was proposed. The dirt band could be broken by adjusting the cutting arm swinging speed or cutting motor revolving speed when the dirt band was smaller, or be avoided and processed manually when larger. For the factor of control system, cutting arm slow stop function was used to amend the impact of the cross section boundary trajectory. For the roadheader position and posture error, the error should be decomposed firstly, and procedures or pre-plate and support adjustment were used to realize trajectory correction. This paper laid an important foundation for multi-objective optimization of roadheader cutting trajectory.
This paper focuses on visual semantic navigation, the task of producing actions for an active agent to navigate to a specified target object category in an unknown environment. To complete this task, the algorithm sho...
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ISBN:
(纸本)9781728190778
This paper focuses on visual semantic navigation, the task of producing actions for an active agent to navigate to a specified target object category in an unknown environment. To complete this task, the algorithm should simultaneously locate and navigate to an instance of the category. In comparison to the traditional point goal navigation, this task requires the agent to have a stronger contextual prior to indoor environments. We introduce SSCNav, an algorithm that explicitly models scene priors using a confidence-aware semantic scene completion module to complete the scene and guide the agent's navigation planning. Given a partial observation of the environment, SSCNav first infers a complete scene representation with semantic labels kw the unobserved scene together with a confidence map associated with its own prediction. Then, a policy network infers the action from the scene completion result and confidence map. Our experiments demonstrate that the proposed scene completion module improves the efficiency of the downstream navigation policies. Code and data: https://*** .***/
CAN-bus communication is a kind of the most important mode used in modular underwater vehicle (MUV) to realize the modularization of data communication between unit modules. In this paper, the CAN-bus-based communicat...
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Through investigating the progress of domestic and international traffic simulation systems, we constructed the simulation model of vehicle movement during traffic accident after analyzing the one-dimensional and two-...
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As industrial robots wildly applied in advanced manufacturing fields, the accuracy requirement of robot keeps increasing. In this paper, a joint position sensitive virtual tool transformation fitting method is propose...
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This paper introduces a proposal design of video surveillance system that bases on the mediastreamer2 library. It is launched directly from a web page by using ActiveX control. The benefit of using the control is to d...
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The undergraduation thesis is an important link and stage in the training of college students. But in recent years, there are many problems in the undergraduation thesis, such as "serious plagiarism", "...
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Respiratory motion of spine in robotic spine surgery cannot be neglected because of its intervention in accurate positioning and operating on the spine. In this paper, a framework to compensate respiratory vertebrae m...
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Exploration systems are critical for enhancing the autonomy of robots. Due to the unpredictability of the future planning space, existing methods either adopt an inefficient greedy strategy, or require a lot of resour...
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