Actuators  

Chih-Jer Lin, Ting-Yi Sie, Wen-Lin Chu, Her-Terng Yau and Chih-Hao Ding

This study discusses a circular trajectory tracking function through a proposed pneumatic artificial muscle (PAM)-actuated robot manipulator. First, a dynamic model between a robot arm and a PAM cylinder is introduced. Then the parameters thereof are iden... see more

Der-Fa Chen, Shen-Pao-Chi Chiu, An-Bang Cheng and Jung-Chu Ting

Electromagnetic actuator systems composed of an induction servo motor (ISM) drive system and a rice milling machine system have widely been used in agricultural applications. In order to achieve a finer control performance, a witty control system using a ... see more

Liankang Wei, Hongzhan Lv, Kehang Yang, Weiguang Ma, Junzheng Wang and Wenjun Zhang

Purpose: We aim to provide a systematic methodology for the optimal design of MRD for improved damping capacity and dynamical adjustability in performing its damping function. Methods: A modified Bingham model is employed to model and simulate the MRD con... see more

Janeth Arias Guadalupe, Dorin Copaci, David Serrano del Cerro, Luis Moreno and Dolores Blanco

Shape memory alloy (SMA) actuators have recently demonstrated their potential for various applications in fields such as robotics, medicine, aerospace, and automotive. Its features, such as low weight and high force, simplicity, noiseless operation, and l... see more

Ilia V. Uvarov, Pavel S. Shlepakov, Artem E. Melenev, Kechun Ma, Vitaly B. Svetovoy and Gijs J. M. Krijnen

Microfluidic devices providing an accurate delivery of fluids at required rates are of considerable interest, especially for the biomedical field. The progress is limited by the lack of micropumps, which are compact, have high performance, and are compati... see more

Bin Meng, Chenhang Zhu, Hao Xu, Mingzhu Dai and Sheng Li

In this paper, a novel maglev coupling based on the opposed Halbach array is proposed as the interface between the linear electro-mechanical converter and 2D valve body. This non-contact maglev coupling possesses several advantages over existing mechanica... see more

Eun-Hyuk Lee, Sang-Hoon Kim and Kwang-Seok Yun

Haptic displays have been developed to provide operators with rich tactile information using simple structures. In this study, a three-axis tactile actuator capable of thermal display was developed to deliver tactile senses more realistically and intuitiv... see more

Junjie Dai, Chin-Yin Chen, Renfeng Zhu, Guilin Yang, Chongchong Wang and Shaoping Bai

Installing force-controlled end-effectors on the end of industrial robots has become the mainstream method for robot force control. Additionally, during the polishing process, contact force stability has an important impact on polishing quality. However, ... see more

Andraž Bradeško, Lovro Fulanovic, Marko Vrabelj, Aleksander Matavž, Mojca Otonicar, Jurij Koruza, Barbara Malic and Tadej Rojac

Despite the challenges of practical implementation, electrocaloric (EC) cooling remains a promising technology because of its good scalability and high efficiency. Here, we investigate the feasibility of an EC cooling device that couples the EC and electr... see more

Junwei Yu and Zhuoping Yu

The localization system of low-cost autonomous vehicles such as autonomous sweeper requires a highly lateral localization accuracy as the vehicle needs to keep a near lateral-distance between the side brush system and the road curb. Existing methods usual... see more

Yongye Wu, Zhanlong Zhang, Rui Xiao, Peiyu Jiang, Zijian Dong and Jun Deng

Kentaro Omori, Nozomu Fujimoto, Takefumi Kanda, Shuichi Wakimoto and Norihisa Seno

Droplets with a core–shell structure formed from two immiscible liquids are used in various industrial field owing to their useful physical and chemical characteristics. Efficient generation of uniform core–shell droplets plays an important role in terms ... see more

Minh-Thien Tran, Dong-Hun Lee, Soumayya Chakir and Young-Bok Kim

This article proposes a novel adaptive super-twisting sliding mode control scheme with a time-delay estimation technique (ASTSMC-TDE) to control the yaw angle of a single ducted-fan unmanned aerial vehicle system. Such systems are highly nonlinear; hence,... see more

Shoujun Zhao, Keqin Chen, Xiaosha Zhang, Yingxin Zhao, Guanghui Jing, Chuanwei Yin and Xue Xiao

It is difficult to describe precisely, and thus control satisfactorily, the dynamics of an electro-hydraulic actuator to drive a high thrust liquid launcher engine, whose structural resonant frequency is usually low due to its heavy inertia and complicate... see more

André Preumont, Han Wang, Shengzheng Kang, Kainan Wang and Ali Roshanbin

This paper analyzes the lift-production system in hovering of the flapping wing robot COLIBRI of the size of a hummingbird. The paper first examines the flapping wing mechanism for which a new gear transmission is proposed to reduce the friction and facil... see more

Jozef Živcák, Michal Kelemen, Ivan Virgala, Peter Marcinko, Peter Tuleja, Marek Sukop, Ján Liguš and Jana Ligušová

COVID-19 was first identified in December 2019 in Wuhan, China. It mainly affects the respiratory system and can lead to the death of the patient. The motivation for this study was the current pandemic situation and general deficiency of emergency mechani... see more

Hideyuki Tsukagoshi and Yuichi Osada

A universal suction cup that can stick to various objects expands the areas in which robots can work. However, the size, shape, and surface roughness of objects to which conventional suction cups can stick are limited. To overcome this challenge, we propo... see more

Rishil Kirankumar Lakhe, Hicham Chaoui, Mohamad Alzayed and Shichao Liu

This paper focuses on the universal control design of permanent magnet synchronous motors (PMSMs) with uncertain system dynamics. In vector control, classical proportional-integral (PI) controllers are used to control d-q axis currents and speed of the PM... see more

Fu-Hsuan Wen, Fu-Yuen Hsiao and Jaw-Kuen Shiau

This research presents an analysis and management strategy for hovering hexacopter with one or more failing motors. Of late, multirotor drones have become particularly popular, and all drones have been increasing in popularity. Unlike a fixed-wing drone, ... see more

Alejandro Piñón, Antonio Favela-Contreras, Luis C. Félix-Herrán, Francisco Beltran-Carbajal and Camilo Lozoya

Passenger comfort and vehicle stability are key aspects that must be guaranteed on ground vehicles, and semi-active suspensions have offered an outstanding solution to meet these opposite objectives. This contribution describes a novel autoregressive with... see more

Hamid Reza Jarrah, Ali Zolfagharian, Reza Hedayati, Ahmad Serjouei and Mahdi Bodaghi

This paper presents nonlinear finite element (FE) models to predict time- and temperature-dependent responses of shape memory polymer (SMP) foams in the large deformation regime. For the first time, an A SMP foam constitutive model is implemented in the A... see more

Bin Li, Liang Yan and Chris Gerada

Due to their large working space and fast response, cable driven systems have been widely applied in manufacturing, robotics and motion simulators, etc. However, the cable is flexible and tends to resonate at high frequencies, which raises challenges for ... see more

Qi Wang, Hong-Nan Li and Peng Zhang

High-rise structures are normally tall and slender with a large height-width ratio. Under the strong seismic action, such a structure may experience violent vibrations and large deformation. In this paper, a spring pendulum pounding tuned mass damper (SPP... see more

Dariusz Horla

This work relates to the reliable generalized predictive control issues in the case when actuator or sensor failures take place. The experimental results that form the basis from which the conclusions are drawn from have been obtained in the position cont... see more

Jeong Yong Kim, Nicholas Mazzoleni and Matthew Bryant

Fluidic artificial muscles (FAMs), also known as McKibben actuators, are a class of fiber-reinforced soft actuators that can be pneumatically or hydraulically pressurized to produce muscle-like contraction and force generation. When multiple FAMs are bund... see more

Gerardo Silva-Navarro, Francisco Beltran-Carbajal, Luis Gerardo Trujillo-Franco, Juan Fernando Peza-Solis and Oscar A. Garcia-Perez

An online algebraic estimation technique for natural and forcing frequencies for a class of uncertain and lumped-parameter vibrating mechanical systems with n degrees of freedom is described. In general, realistic vibrating systems can be affected by unkn... see more

Kentaro Takagi, Yuya Kitazaki and Kota Kondo

This paper proposes a simple but effective method for characterizing dielectric elastomer actuators (DEAs), especially for thin stacked DEAs, which are promising for haptic devices but which measure the dynamic elastic modulus with great difficulty. The d... see more