Hongbo Wang

Hongbo Wang
University of Science and Technology of China | USTC · Department of Precision Machinery and Precision Instrumentation

PhD

About

43
Publications
31,410
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
819
Citations
Introduction
Research Interests: Soft Sensors, Soft Robotics, Force and Tactile Sensing, Self-Sensing Actuators, Wearable Sensors, Wireless Sensors, Robotics Percpetion, Stretchable Inductors, Novel Sensing mechanisms, Sensing Electronics, Advanced Fabrication and Smart Materials. Contact: Email: wangh@ustc.edu.cn Website: http://staff.ustc.edu.cn/~whbyn/
Additional affiliations
September 2017 - March 2021
Istituto Italiano di Tecnologia
Position
  • Master's Student
June 2015 - June 2017
University of Leeds
Position
  • Research Associate
Description
  • https://www.engineering.leeds.ac.uk/surgical-technologies/
September 2010 - February 2011
University of Science and Technology of China
Position
  • Research Assistant
Description
  • Teaching Assistant for a undergraduate course named "Instrumentation circuits design" Graded homework, teaching experimental courses, direct the experiments
Education
September 2010 - June 2015
University of Science and Technology of China
Field of study
  • PhD. in Precision Instrumentation & Machinery
September 2006 - July 2010
University of Science and Technology of China
Field of study
  • B.E.in Mechanical Engineering and Automation

Publications

Publications (43)
Article
Full-text available
Bio‐inspired soft robots provide a promising solution for robots working in human‐centered scenarios and interacting with unstructured environments. However, the functional versatility and multimodal sensing of soft robots still need improvements. On one hand, the configuration of a soft robot is predefined during manufacturing; on the other hand,...
Article
Full-text available
Perception in soft robotics is crucial to allow a safe interaction to effectively explore the environment. Despite the inherent capabilities of soft materials, embedding reliable sensing in soft actuators or robots could introduce constraints in the overall design (e.g., loss of deformability, undesired trajectories, etc.) or reduce their compliant...
Article
Full-text available
Pneumatic artificial muscles (PAMs) are one of the key technologies in soft robotics, and they enable actuation in mobile robots, in wearable devices and exoskeletons for assistive and rehabilitative purposes. While they recently showed relevant improvements, they still present quite low payload, limited bandwidth, and lack of repeatability, contro...
Article
Full-text available
Conductive and stretchable electrodes that can be printed directly on a stretchable substrate have drawn extensive attention for wearable electronics and electronic skins. Printable inks that contain liquid metal are strong candidates for these applications, but the insulating oxide skin that forms around the liquid metal particles limits their con...
Article
Full-text available
Sensors detecting angles created by deformable structures play an increasing role in soft robotics and wearable systems. However, the typical sensing method based on strain measurement strongly depends on the viscoelastic behaviors of soft substrates and on the location of sensors that affect the sensing reliability. In this work, the changes in ma...
Conference Paper
Full-text available
Tactile sensors should be immune to electromagnetic interference (EMI), to provide repeatable and accurate signal of the physical touch for real-world applications. Soft Inductive Tactile Sensors (SITS) can achieve high performance, but could be affected by EMI. Here, we present the development of fully shielded (FS-) SITS using conductive textile...
Conference Paper
Full-text available
This paper presents an ultra-light, highly compressible, resistive sensor based on open-cell polyurethane foam coated with PEDOT:PSS. A novel electrodes configuration is developed to eliminate the unstable contact resistance, providing reliable electrical and mechanical connections for foam-based sensors. Thereby, the proposed sensors have a low re...
Data
A 2.5 mins short video clip to highlight our work ""A Wireless Inductive Sensing Technology for Soft Pneumatic Actuators Using Magnetorheological Elastomers" presented at the IEEE International Conference on Soft Robotics (RoboSoft 2019), in Seoul, Korea. Demonstration and test video clips of the sensorized flat SPA and bending SPA were included.
Conference Paper
Full-text available
This paper presents a novel wireless inductive sensing solution to measure body deformation of soft pneumatic actuators (SPAs). The proposed technology exploits a magnetorheological elastomer (MRE) both as actuator’s highly deformable skin and as target of the inductive sensor. When the MRE skin is deformed by internal driving and/or external load,...
Article
Full-text available
In the past few years, soft robotics has been rising up rapidly as an emerging research topic, opening new possibilities for addressing real-world tasks. Perception can enable robots to effectively explore the unknown world, and interact safely with humans and the environment. Among all extero-and proprioception modalities, the detection of mechani...
Article
Tactile sensors are essential for robotic systems to safely and effectively interact with the environment and humans. In particular, tri-axis tactile sensors are crucial for dexterous robotic manipulations by providing shear force, slip or contact angle information. The Soft Inductive Tactile Sensor (SITS) is a new type of tactile sensor that measu...
Article
Tactile sensors are essential for robotic systems to interact safely and effectively with the external world, they also play a vital role in some smart healthcare systems. Despite advances in areas including materials/composites, electronics and fabrication techniques, it remains challenging to develop low cost, high performance, durable, robust, s...
Article
Full-text available
This paper investigates the design optimisation of a magnetic field based soft tactile sensor, comprised of a magnet and Hall effect module separated by an elastomer. The aim was to minimise sensitivity of the output force with respect to the input magnetic field; this was achieved by varying the geometry and material properties. Finite element sim...
Conference Paper
Full-text available
Tactile sensors are essential for robotic systems to interact safely and effectively with the external world. In particular, tri-axis tactile sensors are crucial for dexterous robotic manipulations by providing shear force for slip and contact angle detection. In this paper, we present a soft tri-axis tactile sensors using flexible coils and conduc...
Conference Paper
Full-text available
This paper reports the development of a soft tactile sensor with variable compliance. The concept is based on a magnetic Hall-Effect sensor coupled with a soft, pressure controlled pneumatic chamber. The sensor design is developed using computational Finite Element models. A physical prototype is then fabricated and evaluated in experimental tests,...
Conference Paper
Full-text available
Objective: This work presents a method for the use of a soft multi-axis force sensor to determine tissue trauma in Minimally Invasive Surgery. Despite recent developments, there is a lack of effective haptic sensing technology employed in instruments for Minimally Invasive Surgery (MIS). There is thus a clear clinical need to increase the provision...
Conference Paper
Objective: This work presents a method for the use of a soft multi-axis force sensor to determine tissue trauma in Minimally Invasive Surgery. Despite recent developments, there is a lack of effective haptic sensing technology employed in instruments for Minimally Invasive Surgery (MIS). There is thus a clear clinical need to increase the provision...
Article
Full-text available
Tactile sensors are essential for robotic systems to safely interact with the external world and to precisely manipulate objects. Existing tactile sensors are typically either expensive or limited by poor performance, and most are not mechanically compliant. This work presents MagTrix, a soft tactile sensor array based on four 3D Hall sensors with...
Data
This is a demo Video for the MagOne senosr we developed. Please read our paper for more details: Design Methodology for Magnetic Field-Based Soft Tri-Axis Tactile Sensors http://www.mdpi.com/1424-8220/16/9/1356
Article
Full-text available
Tactile sensors are essential if robots are to safely interact with the external world and to dexterously manipulate objects. Current tactile sensors have limitations restricting their use, notably being too fragile or having limited performance. Magnetic field-based soft tactile sensors offer a potential improvement, being durable, low cost, accur...
Conference Paper
Sensors take measurements and provide feedback to the user via a calibrated system, in soft sensing the development of such systems is complicated by the presence of nonlinearities, e.g. contact, material properties and complex geometries. When designing soft-sensors it is desirable for them to be inexpensive and capable of providing high resolutio...
Article
This paper proposes an online, non-contact metal film thickness measurement system based on eddy current sensing. The slope of the lift-off curve (LOC) is used for characterizing target thickness. Theoretical derivation was conducted to prove that the slope is independent of the lift-off variation. In practice, the measurement has some immunity to...
Article
Full-text available
It is found that a piezoelectric plate can serve as an excellent inductive component between its resonant and anti-resonant frequencies. To compensate for the capacitance of a piezoelectric transformer (PT) at resonance, three piezoelectric plates with different inductances are chosen to match the PT in different exciting power. Experiments demonst...
Article
Full-text available
In this paper, a novel meander-spiral coil (MSC) was designed as an eddy current sensor (ECS) probe, which has a small sensing area and spot size, nearly no limitation of mounting space, and can perform performance better than the regular-spiral coil (RSC). Results of the finite element analysis show that the MSC has a magnetic active area that was...
Article
Full-text available
Eddy current sensors (ECSs) are widely used for non-contact displacement measurement. In this note, the quantitative error of an ECS caused by target conductivity was analyzed using a complex image method. The response curves (L–x) of the ECS with different targets were similar and could be overlapped by shifting the curves on x direction with √2δ/...
Article
Full-text available
A simple method for measuring the thickness of metal films based on eddy-current sensors (ECSs) immune to distance variation is proposed. The slope of the lift-off curve (LOC) in the RL impedance plane is a good feature for characterizing target thickness independent of lift-off distance variation. A simple equivalent model was built to deal with t...
Article
Full-text available
A piezoelectric linear motor (PLM), which has a mechanism based on synchronized switching control, is composed mainly of a driving unit and a clamping unit. A resonant-type clamping (RTC) unit is developed to increase the working frequency of the motor. The developed RTC unit is a three-layer tuning fork structure with ten pieces of single-layer pi...
Conference Paper
Full-text available
This paper presents a comprehensive analysis and discussion of how to design a high resolution and low thermal drift eddy current sensor (ECS). A simple transformer based equivalent model was presented to explain the influence of target conductivity and working frequency to the ECS’s sensitivity and stability. The relationships between the ECS’s pe...
Patent
Full-text available
一种基于电涡流传感器的导电膜厚度测量系统及对应测量方法,利用涡流传感器探测线圈的阻抗在电阻-电感平面中的对应点在不同探测距离下形成的提离线的斜率与被测导电膜厚度的关系来实现厚度测量。所述导电膜厚度测量系统包括:带有探测线圈的电涡流传感器探头、阻抗测量电路、实现探头上下移动的微型致动器以及控制测量过程和厚度结果输出的控制器。本发明方法简单高效,可以非接触地准确测量出导电膜的厚度,测量结果几乎不受探测距离的影响,厚度测量范围从几十nm到几mm,可以广泛地用于半导体金属膜检测、工业生产线上的金属膜在线测量系统以及各种镀膜工艺的质量监控或检测等应用中。
Article
Full-text available
This paper proposes a new method using eddy current sensor (ECS) for online non-contact diameter measurement of metallic wires with ultrahigh resolution. A prototype sensor was designed, fabricated, and tested for copper wires with diameters ranging from 1.12 mm to 1.30 mm. A solenoid coil with dimensions of 16 mm long and 2.1 mm in diameter is use...
Article
Full-text available
This paper proposes a method of self-temperature compensation for eddy current sensors (ECSs) during rapid temperature changes. The temperature drift of the sensor impedance caused by the probe coil and target temperature variations was discussed and analyzed. The proposed impedance measurement method can distinguish the temperature drift caused by...
Patent
Full-text available
本发明公开了一种电涡流位移传感器温度漂移系数的测量装置,该装置利用超低热膨胀系数的垫片,和普通材料制造的探头固定结构、弹性体,以及目标导体片、支架、底座构成一个非常精确稳定的位移固定系统。不同于以往的测量装置全部采用低温漂的因瓦(Invar)合金等材料制造的温度漂移测量装置,本装置的主体可以是廉价而易于加工制造的常用材料,确定位移的垫片采用低热膨胀系数的材料制造。本发明装置可以用来精确测量高分辨率电涡流位移传感器的温度漂移,还可以安装精密位移制动器来校准灵敏度和线性度等。基于本发明的涡流传感器温度系数测量装置,结构简单,成本低,而且其所固定的位移温漂系数可以低至1nm/℃以下。
Patent
Full-text available
本发明公开了一种利用电桥分离感抗和电阻微小变化的解调电路,该解调电路分离了串联LR的电阻部分和电感部分,可以精确测量出串联LR的电感和电阻分量的微小变化。本发明所述的解调电路主要由特定参数设计的交流电桥、正弦波电压信号源(4)、前置差动放大器(10)、两路正交的锁定放大器(13)组成。本发明电路可采用简单的电压源信号作激励,结构简单,测量分辨率高,可靠性高。本发明在精确测量感性元件的电感(和电阻)变化的场合具有重要的应用价值,比如电感式传感器的信号解调电路,感性元件的电感值和电阻值得温度系数标定等。利用本发明对电涡流传感器探头的电感微小变化量进行测量,其分辨率可达1ppm。
Article
Full-text available
We develop a novel approach to match harmonics and vibration modes based on the mechanism of multiple tuning fork structure (MTFS), through which it is promising to realize arbitrary periodical vibrations in the resonant state. A prototype three-layer MTFS with first three harmonics is presented to verify the feasibility of the proposed principle....
Patent
Full-text available
本发明提供一种电涡流传感器的温度漂移自动校正方法,该方法是采用一定的阻抗测量电路同时获取探测线圈的等效电感和电阻,利用其电感和电阻随温度和被测量变化的关系,来消除温度变化的影响,提取出实际的被测量的变化信息。本发明由阻抗测量模块(4)和校正运算模块(5)组成的涡流传感器信号调理电路,实现了在获取被测量信息的同时,自动校正、消除了温度变化的影响。本发明进行温度漂移校正不增加额外的探头、线圈或温度传感器,温漂校正效果显著,而且具有适用范围广、结构简单、易于实现等诸多优点。采用本发明对单线圈的电涡流位移传感器探头进行温度漂移自动校正,其温漂系数一般可以从500nm/℃降低到了5nm/℃以下。
Article
Full-text available
A static vector magnetometer based on two-dimensional (2D) vibrating coils actuated by a piezoelectric cantilever is presented. Two individual sensing coils are orthogonally fastened at the tip of cantilever and piezoelectric sheets are used to excite the cantilever bending. Due to off-axis coupler on the tip, the cantilever generates bending and t...

Projects

Projects (2)
Project
The overall goal of this Marie Curie Fellowship Project (3D-SITS) is to develop a robust, high-performance, truly soft, multimodal tactile sensing technology: Stretchable Inductive Tactile Sensors (SITS), enabling them to be directly integrated into soft robotic and wearable systems. By investigating this overlooked inductive transducer mechanism, together with novel design and fabrication techniques, that allow us to build truly soft, durable, high-performance, distributed, 3D tactile sensing systems at component level (artificial receptors) and then system level (soft robotics and wearable skin), providing a leap forward in the area of artificial touch for the next generation of robots, wearable systems and human–machine interfaces. Keywords: Soft Tactile Sensing, Stretchable Strain Sensors, Soft Robotics, Wearable and Healthcare systems.
Archived project
In collaboration with Imperial College London this project, will develop and test a framework for optimising soft sensor systems. Our particular focus is the development of soft sensor systems which can be used to interrogate the force response of highly compliant materials (i.e. biological tissues). The research combines experimental and computational strands; we are developing the sensing platform using soft robotic techniques and optimising the configuration using a range of inverse-model based optimisation techniques.