Ahstract- The registration of point cloud data is essential in various applications, such as computer vision and robotics. The Iterative Closest Point (ICP) algorithm offered a solution to this problem, with several s...
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ISBN:
(数字)9798331542047
ISBN:
(纸本)9798331542054
Ahstract- The registration of point cloud data is essential in various applications, such as computer vision and robotics. The Iterative Closest Point (ICP) algorithm offered a solution to this problem, with several subsequent methods addressing problems including occlusions and variable point data overlap. To also account for detection errors, the Particle Swarm Optimization - Cardinalized Optimal Linear Assignment (PSO-COLA) point data registration algorithm was introduced. This algorithm offers robust registration solutions in the presence of data miss-detections and false alarms, but being based on a Particle Swarm Optimization (PSO) concept is susceptible to local minima problems. To address this problem, we propose the use of two additional meta-heuristic algorithms, namely Artificial Rabbit Optimisation (ARO) and Artificial Bee Colony (ABC), in combination with the Cardinalized Optimal Linear Assignment (COLA) metric. Our experiments show that the resulting ARO-COLA algorithm reduces the execution time compared with the former PSO-COLA algorithm while maintaining high registration accuracy, especially in scenarios with cardinality and spatial errors. The results indicate that the ARO-COLA algorithm is a promising alternative for efficient and accurate point cloud registration.
Stroke risk increases with age. After the stroke, the patients are likely to develop some inappropriate compensatory movements. These movements disrupt normal activities and reduce the effectiveness of the rehabilitat...
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ISBN:
(纸本)9781665420945
Stroke risk increases with age. After the stroke, the patients are likely to develop some inappropriate compensatory movements. These movements disrupt normal activities and reduce the effectiveness of the rehabilitation. This paper applies deep learning algorithms like RNN, GRU, LSTM, and Transformer to detect the compensatory movements based on the Microsoft Kinect data from the Toronto rehab stroke pose dataset. The models are trained with focal loss to decrease the effect of the imbalanced data distribution. The trained models have achieved higher accuracy than works done in the literature on this dataset.
In order to address the issue of low control efficiency in strip steel edge tracking during precision rolling, this study developed a dynamic coupling finite element model of the rolling mill rolls and the strip using...
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ISBN:
(数字)9798350343335
ISBN:
(纸本)9798350343342
In order to address the issue of low control efficiency in strip steel edge tracking during precision rolling, this study developed a dynamic coupling finite element model of the rolling mill rolls and the strip using the ABAQUS software. The aim is to investigate the functional relationship between the roll gap tilt and the strip steel edge deviation at the exit. The research primarily analyzes the influence of strip width, strip thickness, and steel grade on strip steel edge deviation, and under different roll gap tilt conditions, it outputs the variation in deviation and obtains the control coefficient for strip steel edge tracking through interpolation fitting. The results indicate that the influence of steel grade on control efficiency is significantly higher than that of width and thickness, with width being secondary and thickness having the smallest impact. Through interpolating the data, the control coefficient for strip steel edge tracking can be obtained under different operating conditions, higher control efficiency is achieved with a greater roll gap tilt and a smaller control coefficient. This study provides a theoretical foundation for the control of strip steel edge tracking in industrial precision rolling processes.
This paper investigates the development of a modern seed sowing robot whose main aim is to introduce efficiency in the practice of agriculture to improve accuracy with low cost. This automated seed sowing robot tackle...
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ISBN:
(数字)9798331534400
ISBN:
(纸本)9798331534417
This paper investigates the development of a modern seed sowing robot whose main aim is to introduce efficiency in the practice of agriculture to improve accuracy with low cost. This automated seed sowing robot tackles some key problems of existing methods such as labor intensity, environmental impacts, and inefficiency. It’s an autonomous movement machine which works automatically by calculating spacing of seeds with proper depth of planting through a micro-controller. The robot can plant a variety of seed types, both with one and multiple seeds per hole while executing provisions to create optimal directions row-wise as well as column depending on pre-programmed instructions. GPS navigation is fitted to the robot to ensure seeds are placed correctly each time, thereby improving uniformity and decreasing overlap. The achieved accuracy rate is 94.75% and the coverage efficiency is improved by comparison to conventional methods. Additionally, consistent performance results were confirmed in different soil types (sandy, loamy, clay) to show that the system can be used more widely. The key to this study is that robotic technology can be used as a basis for expanding and modifying the way agriculture is done in this industry, providing an inexpensive and accurate method for small farms.
This research deals with the linear quadratic (LQ) optimal control and suboptimal control of networked systems with packet losses and unknown system dynamics. Three system models including two kinds of Transmission Co...
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In this paper, a nonlinear model predictive control considering vehicle jerk dynamics is proposed for improving ride comfort of passengers. Since the vehicle model in prediction phase requires high accuracy dynamics i...
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In this paper, a nonlinear model predictive control considering vehicle jerk dynamics is proposed for improving ride comfort of passengers. Since the vehicle model in prediction phase requires high accuracy dynamics in order to handle the jerk motion, the approximated wheel load transfer dynamics is introduced. Also, to obtain the control capability for not only jerk but also acceleration, velocity and position, the expanded state space model including these dimensions into the one has been developed. It improves the utility as autonomous vehicle controller. By numerical simulation in assuming cornering driving scene, the effectiveness that jerk and other vehicle states enable to constraint simultaneously by individual torque distribution by electric power train is validated. Further, the principle of the optimized torque distribution by proposed method is analyzed.
Lovable robots in movies regularly beep, chirp, and whirr, yet robots in the real world rarely deploy such sounds. Despite preliminary work supporting the perceptual and objective benefits of intentionally-produced ro...
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ISBN:
(纸本)9781728190778
Lovable robots in movies regularly beep, chirp, and whirr, yet robots in the real world rarely deploy such sounds. Despite preliminary work supporting the perceptual and objective benefits of intentionally-produced robot sound, relatively little research is ongoing in this area. In this paper, we systematically evaluate transformative robot sound across multiple robot archetypes and behaviors. We conducted a series of five online video-based surveys, each with N approximate to 100 participants, to better understand the effects of musician-designed transformative sounds on perceptions of personal, service, and industrial robots. Participants rated robot videos with transformative sound as significantly happier, warmer, and more competent in all five studies, as more energetic in four studies, and as less discomforting in one study. Overall, results confirmed that transformative sounds consistently improve subjective ratings but may convey affect contrary to the intent of affective robot behaviors. In future work, we will investigate the repeatability of these results through in-person studies and develop methods to automatically generate transformative robot sound. This work may benefit researchers and designers who aim to make robots more favorable to human users.
As part of this research, software for multimodal biometric authentication using neural networks is developed to improve the efficiency of information system user authorization. The architectures of artificial neural ...
As part of this research, software for multimodal biometric authentication using neural networks is developed to improve the efficiency of information system user authorization. The architectures of artificial neural networks, which are involved in the processes of recognizing a person by facial image and voice, are given. The internationally used databases (DataSet) of images and audio recordings for training of neural networks are considered. The process of training neural networks, the formed database of biometric personal data and the results obtained by the authors are described.
Most industrial parts are parametric and their special properties are not fully explored yet. This paper proposes a new 6DoF pose estimation network for parametric shapes in stacked scenarios (ParametricNet). It treat...
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ISBN:
(纸本)9781728190778
Most industrial parts are parametric and their special properties are not fully explored yet. This paper proposes a new 6DoF pose estimation network for parametric shapes in stacked scenarios (ParametricNet). It treats a parametric shape, instead of a part object, as a category. The keypoints of individual instances are learned with pointwise regression and Hough voting scheme, from which specific parameter values are calculated. Then, the template keypoints are obtained based on the computed parameter values and the parametric shape templates. Finally, the 6DoF pose is estimated by least-square fitting between the individual instance's and the template's keypoints & centroid. On the public Silt ane dataset, the average of APs of ParametricNet is 96%, compared with 82% for the state-of-the-art method. In addition, a new parametric dataset with four shape templates is constructed, in which the evaluated learning and generalization abilities of ParametricNet outperform the state-of-the-art methods. In particular, for the less symmetric shape, the mAP is improved by over 20%, which is an obvious improvement. Real-world experiments show that our method can grasp parametric shapes with unknown parameter values in slacked scenarios.
A farmland intelligent monitoring and irrigation system based on the Internet of Things and 5G technology is designed. The system mainly includes two templates: intelligent monitoring system and intelligent control sy...
A farmland intelligent monitoring and irrigation system based on the Internet of Things and 5G technology is designed. The system mainly includes two templates: intelligent monitoring system and intelligent control system, in which the intelligent monitoring system is mainly responsible for detecting soil temperature and humidity and trace elements such as nitrogen, phosphorus and potassium, and the intelligent control system is mainly responsible for remote operation of intelligent irrigation. The system measures soil temperature, humidity and trace elements such as nitrogen, phosphorus and potassium through the sensors in the intelligent monitoring section, and uses 5G wireless transmission technology to send the data collected by the sensors to the Internet of Things, which then transmits the collected information to a mobile app. The system can solve the shortcomings of traditional irrigation methods which are cumbersome and seriously inefficient in irrigating agricultural facilities.
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