Article
Engineering, Mechanical
Revanth Konda, Jun Zhang
Summary: Artificial muscles are compliant actuators with high power density, but the issue of lonely stroke affects their behavior and requires systematic experimental characterization and compensation. This study proposes a method to address the hysteresis with lonely stroke in artificial muscles, and validates the effectiveness of the proposed scheme through experiments and simulations.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Engineering, Electrical & Electronic
Gihyeok Na, Hiroyuki Nabae, Koichi Suzumori
Summary: The McKibben artificial muscle is a promising actuator for musculoskeletal robots due to its similar properties to animal muscles. However, there have been limitations to its application. The research group developed a thin McKibben muscle, but it cannot relax like real muscles. The previous proposal of a braided McKibben muscle overcomes this disadvantage and in this study, the structure was improved for durability and passive relaxation was investigated, resulting in an increased driving range for a musculoskeletal arm model.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Engineering, Mechanical
Jacek Garbulinski, Sai C. Balasankula, Norman M. Wereley
Summary: Extensile fluidic artificial muscles (EFAMs) are soft actuators known for their large ranges of extension, low weight, and blocked forces comparable to those of pneumatic cylinders. This study focuses on the manufacturing, experimental characterization, and modeling of EFAMs, proposing new constitutive models that better represent stress-strain relationships and demonstrate improved accuracy. The analysis suggests that these new stress functions have smaller errors, guarantee material stability, and are more conservative about stress values for strains outside of the testing range compared to previous models.
Article
Engineering, Multidisciplinary
Dheeraj Vemula, Jeong Yong Kim, Nicholas Mazzoleni, Matthew Bryant
Summary: This study discusses the orderly recruitment strategy of biological musculature and the application of fluidic artificial muscles in actuators. A comparison between the multi-valve system (MVS) and orderly recruitment valve (ORV) shows that ORV offers a simpler and more compact valve architecture with slightly reduced control flexibility and performance.
BIOINSPIRATION & BIOMIMETICS
(2022)
Article
Robotics
Takahiro Goto, Keisuke Naniwa, Daisuke Nakanishi, Yasuhiro Sugimoto, Yasushi Yagi, Yasushi Makihara, Tomoya Nakamura, Koichi Osuka
Summary: A study aimed to verify the compression characteristics of McKibben pneumatic actuator (MPA) and found that the pushing force of MPA does not monotonically increase with strain due to its deformation mode and end conditions. The hysteresis of MPA and the effects of characteristic variations were also discussed.
Article
Chemistry, Analytical
Xiaochong Zhou, Lue Zhang, Zhan Yang, Lining Sun
Summary: This paper investigates the influence of dynamic voltage hysteresis of PEAs and cutting force on driving accuracy and cutting performance in the FTS system for microstructure surface cutting. A dynamic hysteresis model, BPNN model, and inverse dynamic model are proposed to compensate for the nonlinearity of PEAs, and the performance of the inverse feedforward compensator is validated through experiments.
Article
Robotics
Anderson S. Camp, Edward M. Chapman, Paola Jaramillo Cienfuegos
Summary: This study presents a fluidic artificial muscle designed for hand rehabilitation devices and discovers a novel volume-strain relationship. The volume-strain relationship remains consistent regardless of load when using the coupled piston-FAM system.
INTERNATIONAL JOURNAL OF ROBOTICS RESEARCH
(2021)
Article
Robotics
Ryo Kanno, Shuya Watanabe, Keita Shimizu, Jun Shintake
Summary: This letter introduces a method using dielectric elastomer sensor to create sensorized PAMs, which simplifies the fabrication process and reduces costs. Experimental results show that the sensor accurately detects actuator deformation with low hysteresis and high robustness, validating the concept and effectiveness of PAM-DES as a strategy to sensorize actuators.
IEEE ROBOTICS AND AUTOMATION LETTERS
(2021)
Article
Chemistry, Physical
Bartosz Minorowicz, Andrzej Milecki
Summary: This research paper presents the application of magnetic shape memory alloys (MSMAs) in actuator design. The paper reviews the current state of MSMA actuator design, describes the design and control of a newly proposed actuator, and presents models for the dynamics and hysteresis of the actuator. The paper concludes with the summary of research results and comparison with the registered actuator characteristics.
Article
Chemistry, Analytical
Yanding Qin, Yunpeng Zhang, Heng Duan, Jianda Han
Summary: This paper proposes a combined feedforward and feedback hysteresis compensation method for a piezoelectric actuator based on the MFNN inverse model, which significantly increases the bandwidth and accuracy of the closed-loop system. The method requires tuning only two parameters, making it user-friendly and effective for high-precision hysteresis compensation across a wider frequency range.
Article
Automation & Control Systems
Zhi Li, Jinjun Shan, Ulrich Gabbert
Summary: This article introduces a new direct inverse modeling approach, which eliminates the need for constructing an inverse compensator and can be directly used as one, with parameters obtained through experimental data. A QR factorization based selection mechanism is employed to simplify the implementation of the model while preserving its accuracy.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2021)
Review
Instruments & Instrumentation
Haoyuan Du, Guorui Li, Jiyu Sun, Yanyan Zhang, Yunhe Bai, Chen Qian, Yiming Liang
Summary: Artificial muscles, an important part of soft robots, have gained increasing attention. With the characteristics imitating biological muscles, artificial muscles are naturally suitable for bionic applications. Shape memory alloys (SMAs) have been widely used in artificial muscles due to their high energy density, biocompatibility, corrosion resistance, and self-sensing properties. This review classifies and summarizes the bionic applications of SMA artificial muscles, categorizing them into bionic robotics (animal imitation) and biomedical (human imitation) applications.
SMART MATERIALS AND STRUCTURES
(2023)
Article
Biology
Ethan S. Wold, David A. Sleboda, Thomas J. Roberts
Summary: Recent models show that the interaction between intracellular fluid and extracellular collagen is crucial for force production in passive skeletal muscles, allowing extracellular collagen stiffness to contribute to muscle force. Experimental results demonstrated that expanding the fluid volume within muscles can drive forceful muscle shortening and mechanical work production, contradicting the expectation for isotropic biological tissue and highlighting the importance of three-dimensional force transmission in skeletal muscle.
Article
Crystallography
Rosen Mitrev, Todor Todorov, Andrei Fursov, Borislav Ganev
Summary: This paper investigates a thermo-mechanical model of an actuator consisting of a shape memory alloy wire in series with a bias spring. By developing an algorithm to model hystereses, the accuracy of the model is improved, especially in pulse-width modulation control. Experimental studies show the system is sensitive to physical factors.
Review
Instruments & Instrumentation
Henriette Grellmann, Felix M. Lohse, Vikram G. Kamble, Hans Winger, Andreas Nocke, Rico Hickmann, Sven Wiessner, Chokri Cherif
Summary: This paper provides an overview of the research and development of artificial muscles. By utilizing textile technology, artificial muscles that closely resemble natural muscles, with efficient force transmission and stretching capacity, can be designed. Different types of artificial muscles have been developed, each with its own unique characteristics and applications.
SMART MATERIALS AND STRUCTURES
(2022)
