Event-Trigger Reinforcement Learning-Based Coordinate Control of Modular Unmanned System via Nonzero-Sum Game by Yebao Liu, Tianjiao An, Jianguo Chen, Luyang Zhong, Yuhan Qian

“…Decreasing the position error and control torque is important for the coordinate control of a modular unmanned system with less communication burden between the sensor and the actuator. Therefore, this paper proposes event-trigger reinforcement learning (ETRL)-based coordinate control of a modular unmanned system (MUS) via the nonzero-sum game (NZSG) strategy. …”
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Experimental Study on the Tensile Properties of Rock-Mortar Interface under Different Strain Rates by Nan Wu, Zhende Zhu, Zhilei He

“…Through the use of a precise servo actuator system and three extensometers measured axial-stress-crack-width curves, it is shown that the rock-mortar interface is very sensitive to the strain rate. …”
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A State-Space Modeling Approach for Active Structural Acoustic Control by Leopoldo P.R. de Oliveira, Paulo S. Varoto, Paul Sas, Wim Desmet

“…This kind of models should allow the inclusion of sensors and actuators models, if accurate performance indexes are to be accessed. …”
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Mechanism and Design Analysis of Articulated Ankle Foot Orthoses for Drop-Foot by Morshed Alam, Imtiaz Ahmed Choudhury, Azuddin Bin Mamat

“…Existing AFOs are designed with or without articulated joint with various motion control elements like springs, dampers, four-bar mechanism, series elastic actuator, and so forth. This paper examines various AFO designs for drop-foot, discusses the mechanism, and identifies limitations and remaining design challenges. …”
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Active Fault-Tolerant Control Based on the Fault of Electromagnetic Hybrid Active Suspension by Farong Kou, Jianghao Wu, Jian Gao, Dapeng Wu, Ruochen Chen

“…In order to improve the ride comfort and handling stability of the vehicle and realize the recovery of vibration energy, an electromagnetic linear hybrid suspension actuator composed of linear motor and solenoid valve shock absorber is proposed. …”
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An Alignment Method of Human-Robot Collaboration Based on the Six-Dimensional Force/Torque Dynamic Measurement for Large-Scale Components by Ke Wen, Fuzhou Du, Jiabo Zhang, JiZhi Yang

“…First, the six-dimensional F/T data are calculated based on the six-actuator SPR geometry and screw theory. Second, the effects of gravity forces (dynamic gravity compensation) are considered, and a method to offset their effects is explained. …”
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Technology Efficacy in Active Prosthetic Knees for Transfemoral Amputees: A Quantitative Evaluation by Amr M. El-Sayed, Nur Azah Hamzaid, Noor Azuan Abu Osman

“…The performances of its actuator, sensory system, and control technique that are incorporated in each reported system were evaluated separately and numerical comparisons were conducted based on the percentage of amputees’ gait deviation from normal gait profile points. …”
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Nonlinear Dynamics Analysis and Global Stabilization of Underactuated Horizontal Spring-Coupled Two-Link Manipulator by Ancai Zhang, Jinhua She, Zhenxing Li, Guochen Pang, Zhi Liu, Jianlong Qiu

“…An underactuated horizontal spring-coupled two-link manipulator (UHSTM) is a nonlinear system that has one actuator and two degrees of freedom (DOF). This paper analyzes the nonlinear dynamics and develops a new global stabilization control method for this 2-DOF underactuated system. …”
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Predictive Control for Interval Type-2 Fuzzy System with Event-Triggered Scheme by Siyao Wang, Xiaoming Tang, Li Deng, Hongchun Qu, Linfeng Tian, Cheng Tan

“…Furthermore, the phenomena of data loss and quantization error between the controller and the actuator are expressed as Markovian chain and sector-bound uncertainties. …”
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Reduction of Structural Vibrations by Passive and Semiactively Controlled Friction Dampers by L. Gaul, J. Becker

“…Thereby, semiactive control concepts generally possess the advantage over active control in that the closed loop is intrinsically stable and that less energy is required for the actuation than in active control. In the chosen experimental implementation, a piezoelectric stack actuator is used to apply adjustable normal forces between a structure and an attached friction damper. …”
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Optimization of the Switch Mechanism in a Circuit Breaker Using MBD Based Simulation by Jin-Seok Jang, Chang-Gyu Yoon, Chi-Young Ryu, Hyun-Woo Kim, Byung-Tae Bae, Wan-Suk Yoo

“…In this paper, multibody dynamic model of a circuit breaker including switch mechanism was developed including the electromagnetic actuator system. Since the opening mechanism operates sequentially, optimization of the switch mechanism was carried out to improve the current breaking time. …”
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Flexural Strength Evaluation of Reinforced Concrete Members with Ultra High Performance Concrete by Baek-Il Bae, Hyun-Ki Choi, Chang-Sik Choi

“…Test was conducted by four-point loading with 2,000 kN actuator for slender beam specimen. Additional verifications were carried out with previous researches on flexural strength of steel fiber reinforced concrete or ultra high strength concrete. …”
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A Symmetrical Leech-Inspired Soft Crawling Robot Based on Gesture Control by Jiabiao Li, Ruiheng Liu, Tianyu Zhang, Jianbin Liu

“…In terms of design, the robot utilizes cost-effective thermoplastic polyurethane (TPU) film as the primary pneumatic actuator material. Through a positive and negative pressure switching circuit, the robot’s actuators achieve controllable extension and contraction, allowing for basic movements such as linear motion and directional changes. …”
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Use of wood-plastic composites in 4D printing technology by Daša Krapež Tomec, test test, Aleš Straže, Matevž Kokot, Manja Kitek Kuzman, Mirko Kariž

“…The results showed that the wood content of the wood-plastic composites leads to dimensional changes in a changing climate, resulting in changes in the shape of the designed actuators. The change in shape depends on the thickness ratio of the layers in the two-layer actuator, the sorption of water vapor, and the wood content in the wood-plastic composite used. …”
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Design, Analysis, and Control of Biomedical Healthcare Modular Wheelchair with Posture Transformation by Muhammad Zia Ur Rahman, Imran Ali, Asif Ishfaque, Muhammad Tanveer Riaz, Nasir Ahmad, M. M. Sayed Al Mahmud, Rimsha Tanveer

“…The Arduino oversees the operation of the drive system as a controller, and a linear actuator is utilized for standing and sitting positions. …”
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Design, Development and Control of a Hopping Machine – an Exercise in Biomechatronics by Kuldip Naik, Mehran Mehrandezh, John Barden

“…In this context, the design, development and control of a cost-effective, pneumatically actuated, one-legged hopping machine were initiated at the University ofRegina in 2005. …”
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Structural Health Monitoring of Timber Using Electromechanical Impedance (EMI) Technique by Fang Han, Quanjing Zhang, Chengfeng Wang, Guangtao Lu, Jinwei Jiang

“…The method is implemented by using a patch of Lead Zirconate Titanate transducer both as an actuator to generate stress waves and a sensor to detect stress waves after propagating across the timber specimens. …”
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Optimum Design of a Nonlinear Vibration Absorber Coupled to a Resonant Oscillator: A Case Study by H. F. Abundis-Fong, J. Enríquez-Zárate, A. Cabrera-Amado, G. Silva-Navarro

“…Based on the solution given by the perturbation method mentioned above, a static optimization problem is formulated in order to determine the optimum parameters (mass and length) of the nonlinear absorber which minimizes the steady state amplitude of the primary mass under resonant conditions; then, a PZT actuator is cemented to the base of the beam, so the nonlinear absorber is made active, thus enabling the possibility of controlling the effective stiffness associated with the passive absorber and, as a consequence, the implementation of an active vibration control scheme able to preserve, as possible, the autoparametric interaction as well as to compensate varying excitation frequencies and parametric uncertainty. …”
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A Non-Pyrotechnic Heavy-Load Hold Down Release Mechanism for Space Gimbals by Jun Jiang, Chaoran Wei, Yuanzi Zhou, Qiang Zhang, Jiyang Zhang, Guoyong Zhao, Qiuxia Zhang

“…To address this problem, this paper presents the design of a novel non-pyrotechnic heavy-load hold down release mechanism (HDRM) based on shape memory alloy actuator. The proposed HDRM is shock-free and capable of clearing an axial gap of 8 mm for safe rotating at release. …”
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Multiplicative Fault Estimation-Based Adaptive Sliding Mode Fault-Tolerant Control Design for Nonlinear Systems by Ali Ben Brahim, Slim Dhahri, Fayçal Ben Hmida, Anis Sellami

“…In particular, the nonlinear system is corrupted with multiplicative actuator faults, process faults, and uncertainties. …”
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