检索结果-内蒙古大学图书馆

10th International Conference on Automation, robotics, and Applications, ICARA 2024

作者： Zhang, Yuxin Dong, Wei Yan, Zhiyuan Gao, Yongzhuo Harbin Institute of Technology State Key Laboratory of Robotics and System Harbin China

ISBN: (纸本)9798350394245

Fiber Bragg Gratings (FBG) are used widely for that it is small and sensitive. It is suitable to insert a sensor based on FBGs to some narrow cavities. At the same time, a slender continuum structure requires tiny sensors inside it. A multi-node differential curvature measurement sensor of FBG fiber is designed in this paper to realize temperature compensation. Considering the friction among FBG, driving wires, and niti tube and external forces applied on the end, a mechanical model about the FBG sensor and the continuum manipulator is proposed. At last, a linear interpolation method is used in the curvature estimation. Under the condition that there is no end resistance and only the bending moment and friction along the outer surface of the continuum generated by the steel wire driven by the motor the absolute measurement error of the position of the end of the continuum is 1.9mm. © 2024 IEEE.

关键词： Fiber Bragg gratings

来源：评论

学校读者我要写书评

暂无评论

The effects of 17β-trenbolone and bisphenol A on sexual behavior and social dominance via the hypothalamic-pituitary-gonadal axis in male mice

引用

Journal of Environmental Sciences 2025年第5期151卷 54-67页

作者： Xiang Zuo Minghe Sun Huijuan Bai Shuhui Zhang Jialu Luan Qian Yu Zhenhua Fu Qili Zhao Mingzhu Sun Xin Zhao Xizeng Feng College of Life Science State Key Laboratory of Medicinal Chemical BiologyThe Key Laboratory of Bioactive MaterialsMinistry of EducationNankai UniversityTianjin 300071China Institute of Robotics&Automatic Information System College of Artificial IntelligenceNankai UniversityTianjin 300071China

17β-Trenbolone(17-TB)is well documented as an environmental endocrine disruptor in aquatic biological studies,but its effects on mammals remain poorly ***,17-TB acts as a hormone with properties similar to testosterone,and the consequences of juvenile exposure on adult social behavior remain *** A(BPA)acts as an estrogen-like hormone,compared to ***-week-old male Balb/c mice were exposed orally to 17-TB(100μg/(kg·day))and BPA(4 mg/(kg·day))for 28 *** of social interactions and a three-chamber test showed that 17-TB increased virility in male mice,intensified both male and female sexual behavior,and attracted and accepted female *** also increased social dominance through tube tests inmalemice and markedly activated the c-Fos^(+)immune response in themedial prefrontal cortex(mPFC)and basal amygdala(BLA).ELISA data showed that 17-TB and BPA exposure significantly affected serum gonadotropin-releasing hormone(GnRH),growth hormone(GH),estradiol(E2),and luteinizing hormone(LH)levels,as well as testicular lesions and androgen receptor(ARβ)and estrogen receptor(ERα)*** transcriptomic analysis further confirmed that could disrupt steroid synthesis and linoleic acid-related biometabolic *** findings suggest the influence of 17-TB and BPA exposure on sexual behavior and fertility in male mice,possibly through modulation of the hypothalamic-pituitary-gonadal *** study provides insights relevant to human reproductive health and neuro-social behavioral research,and the potential risk of environmental disturbances should not be overlooked.

关键词： 17β-Trenbolone(17-TB) Bisphenol A(BPA) hypothalamic-pituitary-gonadal axis(HPG) Sex hormones Social dominance Sexual behavior

来源：评论

学校读者我要写书评

暂无评论

Research progress of space non-pyrotechnic low-shock connection and separation technology(SNLT):A review

引用

Chinese Journal of Aeronautics 2022年第11期35卷 113-154页

作者： Honghao YUE Yifei YANG Yifan LU Fei YANG Jun WU Qi RUAN Zongquan DENG State Key Laboratory of Robotics and System Harbin Institute of TechnologyHarbin 15000lChina

Space missions have become diversified in recent years, where connection and separation devices play a crucial role as key components of various spacecraft. Traditional pyrotechnic devices have the advantages of large carrying capacity, rapid motion and functional reliability. However,their shortcomings such as great release shock, poor safety, unrepeatability and other prominent defects make them unsuitable for new generation spacecraft such as microsatellites to separate at low shock or lock repeatedly, etc. Therefore, it is necessary to develop space non-pyrotechnic low-shock connection and separation devices(SNLD) which are required for advanced aerospace missions. In this paper, the progress of the research on space non-pyrotechnic low-shock connection and separation technology(SNLT) is summarized and reviewed. Proceed from the principle of reducing shock for non-pyrotechnic devices, present studies are classified from the perspective of actuating technology and systematic designing methods. For non-pyrotechnic actuating techniques,according to different driving sources, the separation devices are classified into several main categories: electric, magnetic, gas and thermal actuating devices. The actuation principle and application prospect of separation techniques are introduced and the working process, dimension and mechanical properties of typical devices are compared and evaluated. For the systematic designing method, the common mechanism types of SNLDs are summarized according to the designing concept of reducing shock. Then connection configurations are classified according to the structural forms of connection devices, of which the principles, bearing capacities and general applications are discussed. This paper systematically summarizes the key problems, puts forward the future development trend of SNLT, and points out the breakthrough direction for related scholars.

关键词： Connection Low-shock Non-pyrotechnic Separation Space

来源：评论

学校读者我要写书评

暂无评论

Ultrasound-guided prostate percutaneous intervention robot system and calibration by informative particle swarm optimization

引用

Frontiers of Mechanical Engineering 2022年第1期17卷 18-33页

作者： Jiawen YAN Bo PAN Yili FU State Key Laboratory of Robotics and System Harbin Institute of TechnologyHarbin 150001China

Applying a robot system in ultrasound-guided percutaneous intervention is an effective approach for prostate cancer diagnosis and *** limited space for robot manipulation restricts structure volume and *** this paper,an 8-degree-of-freedom robot system is proposed for ultrasound probe manipulation,needle positioning,and needle insertion.A novel parallel structure is employed in the robot system for space saving,structural rigidity,and collision *** particle swarm optimization method based on informative value is proposed for kinematic parameter identification to calibrate the parallel structure *** method identifies parameters in the modified kinematic model stepwise according to parameter *** experiments prove that the robot system can realize motions needed in *** applying the calibration method,a reasonable,reliable forward kinematic model is built,and the average errors can be limited to 0.963 and 1.846 mm for insertion point and target point,respectively.

关键词： ultrasound image guidance prostate percutaneous intervention parallel robot kinematics identification particle swarm optimization informative value

来源：评论

学校读者我要写书评

暂无评论

Self-Regulating Pre-Tensioning Parameter Strategy for Control of Cable-Driven Knee Exoskeleton

Self-Regulating Pre-Tensioning Parameter Strategy for Contro...

引用

2024 China Automation Congress, CAC 2024

作者： Han, Jiaqi Yin, Weihao Jing, Zhibo Han, Jianda Zhang, Juanjuan Tianjin Key Laboratory of Intelligent Robotics Institute of Robotics and Automatic Information System Nankai University Tianjin300350 China

ISBN: (纸本)9798350368604

Knee exoskeletons can offer additional strength and stability for individuals with mobility impairments by providing proper assistance. However, the precise timing of assistance torque for the knee joint poses a challenge to the control of cable-driven exoskeleton systems. Conventional torque-position switching control with a pre-tensioning strategy often fails to meet the precision requirements. In this paper, we developed a self-regulating pre-tensioning parameter strategy to enhance the control performance of cable-driven knee exoskeletons. A specific knee exoskeleton capable of providing both extension and flexion assistance was selected for study. Through geometric analysis of the human-exoskeleton interaction system, a more accurate kinematic relationship has been established, and a state variable named "tightness" has been introduced to describe the cable state. During exoskeleton-assisted walking, the pre-tensioning parameter is iteratively regulated based on tightness, aiming to bring the cable to a critically-tensioned state at the moment of heel strike. Preliminary experimental results demonstrate the strategy significantly improves control precision, the root-mean-square-error of torque tracking with this strategy are reduced by 88.7% and 77.4% for extension and flexion assistance, respectively, compared to scenarios without pre-tensioning. This enhanced control strategy shows promise for further advancing the capabilities of exoskeletons in facilitating human locomotion. © 2024 IEEE.

关键词： Exoskeleton (robotics)

来源：评论

学校读者我要写书评

暂无评论

Mechanical design,modeling,and identification for a novel antagonistic variable stiffness dexterous finger

引用

Frontiers of Mechanical Engineering 2022年第3期17卷 59-74页

作者： Handong HU Yiwei LIU Zongwu XIE Jianfeng YAO Hong LIU State Key Laboratory of Robotics and System Harbin Institute of TechnologyHarbin 150001China

This study traces the development of dexterous hand research and proposes a novel antagonistic variable stiffness dexterous finger mechanism to improve the safety of dexterous hand in unpredictable environments,such as unstructured or man-made operational errors through comprehensive consideration of cost,accuracy,manufacturing,and *** on the concept of mechanical passive compliance,which is widely implemented in robots for interactions,a finger is dedicated to improving mechanical *** finger mechanism not only achieves passive compliance against physical impacts,but also implements the variable stiffness actuator principle in a compact finger without adding supererogatory *** achieves finger stiffness adjustability according to the biologically inspired stiffness variation principle of discarding some mobilities to adjust *** mechanical design of the finger and its stiffness adjusting methods are *** stiffness characteristics of the finger joint and the actuation unit are *** results of the finger joint stiffness identification and finger impact tests under different finger stiffness presets are provided to verify the validity of the *** have been experimentally proven to be robust against physical ***,the experimental part verifies that fingers have good power,grasping,and manipulation performance.

关键词： multifingered hand mechanism design robot safety variable stiffness actuator

来源：评论

学校读者我要写书评

暂无评论

Modeling tactile perceived intensity for vibration from a coin eccentric rotating mass motor

引用

Science China(Technological Sciences) 2025年第2期68卷 125-135页

作者： Yun FANG Jingchen HUANG Yujun WU Jiaqi DONG Weichao GUO Xinjun SHENG State Key Laboratory of Mechanical System and Vibration School of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240China Meta Robotics Institute Shanghai Jiao Tong UniversityShanghai 200240China

Establishing the relationship between vibrotactile parameters and perceived intensity(PI)is of great significance in the regulation of desired sensations,which contribute to haptic interfaces in practical *** eccentric rotating mass(ERM)motors are routinely utilized due to their lightweight design and efficient ability to evoke strong tactile *** adjusting input voltages,ERMs can yield different stimuli,but the effects of their physical properties on PI remain ***,we developed the physical model of the ERM-skin system and optimized the parameters affecting ***,the relationship between stimulus and perception was derived based on Fechner's *** experiments were conducted on fifteen subjects(ten males and five females,aged 24.40±2.87 years)to identify the vibration parameters and corresponding PI to verify the proposed PI *** in this study were attached to phantom skin/forearm with slim adhesive tape to minimize the *** 1 performed vibration calibration with ERM attached to the skin phantom to simulate the actual ***,the relative and absolute PI of subjects on specific stimuli were acquired in Experiments 2 and *** fitting reliability of the proposed PI model was evaluated on fifteen subjects with R^(2) of 0.73±0.07 and root mean squared error(RMSE)of 1.35±***,the proposed PI model established the quantitative relationship between stimulus parameters(vibration parameters and physical parameters)and subjective PI,which provided theoretical support for ERM optimization and vibrotactile modulation.

关键词： coin ERM vibrotactile perceived intensity vibration

来源：评论

学校读者我要写书评

暂无评论

JHT-EXO: A Soft Ankle Exosuit for Assisting Walking in Patients with Post-Stroke Foot Inversion

JHT-EXO: A Soft Ankle Exosuit for Assisting Walking in Patie...

引用

2024 IEEE International Conference on robotics and Biomimetics, ROBIO 2024

作者： Ju, Haotian Guan, Zihang Guo, Songhao Liu, Zedong Zhang, Qinghua Zheng, Tianjiao Zhao, Jie Zhu, Yanhe Harbin Institute of Technology State Key Laboratory of Robotics and System Harbin150001 China

ISBN: (纸本)9781665481090

Stroke often leads to foot inversion, seriously affecting the patients' walking ability. In this paper, a lightweight, soft exosuit, JHT-EXO, is proposed for correcting foot inversion to help patients' gait rehabilitation. JHT-EXO mainly consists of two cable driving modules, two foot feedback modules, and a control module, with a total weight of no more than 2.5 kg. The cable driving module can pre-tighten the cable with a designed constant torque spring to prevent the cable from falling off. When the motor is not energized, it can still assist the person in stabilizing the walking gait and reducing power consumption. Customized foot pressure sensors recognize human gait, and IMUs on the feet measure the ankle angle used by the controller to change the output force of the exosuit. The constant torque spring was calibrated and tested, and the experimental results showed that the average output force of the constant torque spring was 20.0 N, with a maximum error of 5.6% compared to the theoretically calculated results. The ground walking test of the exosuit was performed by three subjects in three conditions: wearing the exosuit powered up, wearing the exosuit unpowered, and not wearing the exosuit. The test results showed that JHT-EXO could effectively reduce the ankle inversion angle by 22.11° compared to not wearing the exosuit. JHT-EXO is feasible in preventing foot drop and stabilizing flip, and its high mobility and portability show potential for gait rehabilitation of foot inversion patients. © 2024 IEEE.

关键词： Patient rehabilitation

来源：评论

学校读者我要写书评

暂无评论

Review on Development of Automatic Docking system for Weapons and Cabins

引用

Recent Patents on Engineering 2024年第2期18卷 63-87页

作者： Tang, Dedong Cheng, Chao Quan, Qiquan Deng, Zongquan Liu, Hao Key Laboratory of Advanced Manufacturing and Intelligent Technology Ministry of Education Harbin University of Science and Technology Harbin150080 China State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin150001 China

Background: In the manufacturing setup process of weapons, aviation, and aerospace, docking assembly is a key component in determining manufacturing efficiency and quality. The traditional docking method uses manual alignment, which depends on the experience and operation level of the workers, so the docking accuracy is low and the installation speed is slow. In response to this problem, how to achieve automatic docking of weapons and cabins has become a key technology. Objective: The objective of this study is to provide an overview of recent key technologies for automatic docking systems and introduce their respective classification, characteristics, and development. Methods: This paper reviews the patents and products related to the key technologies of automatic docking systems. The structural features, methodological principles, control characteristics and applications of the patents and products are summarized. Results: The key technologies related to different aspects of an automatic docking system are compared and analyzed, and the structural features, and methodological principles are also summarized. The problems of the current key technologies are analyzed, and the current status of research and future directions of the automatic docking system are discussed. Conclusion: According to the key technologies related to different aspects of the automatic docking system, they can be divided into motion mechanism, pose detection technology, and computer control technology. The accuracy, compliance, and flexibility of the automatic docking system can be improved by choosing the proper key technology. Further improvements are needed in terms of fast performance, robustness and authenticity, and more patents on key technologies of automatic docking systems should be invented. © 2024 Bentham Science Publishers.

关键词： Patents and inventions

来源：评论

学校读者我要写书评

暂无评论

Dual Transducers Co-Focusing Method for Ultrasound Stimulation in Calf Peripheral Nervous system: A Feasibility Study

Dual Transducers Co-Focusing Method for Ultrasound Stimulati...

引用

2024 IEEE International Conference on systems, Man, and Cybernetics, SMC 2024

作者： Zheng, Haoran Wang, Xiaoxin Zhang, Hongwei Liu, Honghai Harbin Institute of Technology Shenzhen State Key Laboratory of Robotics and System Shenzhen China

ISBN: (纸本)9781665410205

As a neuromodulation technology, ultrasound stimulation exhibits great potential due to its non-invasive and targeted nature. Low-Intensity Focused Ultrasound (LIFU) allows for precise targeting of the peripheral nervous system, enabling the elicitation of diverse sensations in the human body, including tactile, cold, heat, and pain. Current research efforts predominantly focus on ultrasound stimulation of the upper limbs, specifically the fingers. However, there is a paucity of investigation pertaining to the stimulation of the peripheral nervous system in the lower limb of the human body. Furthermore, the utilization of a singularly focused transducer for stimulation introduces anisotropy, thereby rendering it challenging to enhance the axial resolution. This study aims to explore an innovative approach using dual transducers that synergistically focus ultrasound to achieve highly precise stimulation and reduce the disparity between axial and lateral resolution. The primary objective is to investigate the feasibility of utilizing this approach for deep muscle stimulation in the human calf muscles, thus delving into the realm of lower limb neuromodulation. © 2024 IEEE.

关键词： Ultrasonics

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：