A5071254243- Shape Memory Alloy Transformations
- Polymer composites and self-healing
- Space Satellite Systems and Control
- Structural Analysis and Optimization
- Spacecraft Dynamics and Control
- Astro and Planetary Science
- Structural Engineering and Vibration Analysis
- Aeroelasticity and Vibration Control
- Dynamics and Control of Mechanical Systems
- Advanced Sensor and Energy Harvesting Materials
- Magnetic Bearings and Levitation Dynamics
- Innovations in Concrete and Construction Materials
- Composite Structure Analysis and Optimization
- Soft Robotics and Applications
Technische Universität Dresden
2019-2023
Center for Research and Advanced Studies of the National Polytechnic Institute
2018-2020
Soft actuators are a promising option for the advancing fields of human-machine interaction and dexterous robots in complex environments. Shape memory alloy wire can be integrated into fiber rubber composites highly deformable structures. For autonomous, closed-loop control such systems, additional sensors necessary. In this work, soft actuator is presented that incorporates fiber-based to monitor both deformation temperature. The showed considerable around two solid body joints, which was...
Abstract In this contribution, we discuss the construction, modeling, and control of a three‐beam prototype that utilizes interactive fiber rubber composites integrated with shape memory alloys (SMAs) as actuators. These actuators are into textile layer covered an elastomer layer, providing flexibility protection to prototype. A mathematical model was developed describe behavior prototype, employing system identification techniques. However, precise position systems actuated by SMAs is...
This paper develops the mathematical modeling and deflection control of a textile-reinforced composite integrated with shape memory actuators. The model system is derived using identification method an unstructured uncertainty approach. Based on this robust stability analysis, proportional–integral controller designed for controlling composite. We showed that depends significantly uncertainty. performance proposed compared classical one through experimental analysis. Experimental results...
This contribution describes the position control of textile reinforced composites actuated by shape memory alloys. The system exhibits highly nonlinear behaviour including hysteresis due to mechanical properties actuator. From experimental data and identification an uncertainty model is derived. A classical controller based on nominal a robust using are designed. performance controllers examined experimentally.
This paper presents a penalty-based sliding mode control (SMC) law for flexible bar system, which uses shape memory alloy (SMA) as actuator. SMA actuators are lightweight, compact and facilitate their integration into structures. The proposed manipulates current to exert the necessary force deflecting desired state. Numerical simulations demonstrate that this new method can one-input, multi-output under-actuated system of efficiently. mathematical model is obtained using physical...
This paper introduces and evaluates a robust control algorithm based on sliding mode theory, in which together with the use of LMI methods stabilization an underactuated nonlinear system can be guaranteed. The obtained results are applied to mechanical consists two single gimbal moment gyroscopes for triaxial attitude gravity-gradient stabilized tethered satellite system. These objectives investigated first using analytical then verified by numerical simulations.
This paper presents the identification of thermal and mechanical parameters shape memory alloys by using heat transfer equation a constitutive model. The identified are then used to describe mathematical model fiber-elastomer composite embedded with alloys. To verify validity obtained equations, numerical simulations SMA temperature bending carried out compared experimental results.
Active magnetic control have been used to develop the rotating stabilization of tethered nano-satellites. It uses stabilize orbit position by controlling angular velocity TCS. The system Earth's field as energy source interact with a long conductive tether and consecutively reach rotational stability on Low Earth Orbit (LEO). mathematical model design describing orbiting for two connected cube-satellites 1-km-length studied. adaptive version sliding mode was in presence unmodelled dynamics...
This paper presents the dynamic equations of a flexible tethered satellite system in circular orbit. The tether is modelled as combination point masses connected with massless rods. Through this model flexibility and distributed mass are considered. results numerical experiments show effectiveness proposed for analysing longitudinal transverse oscillations system.
This paper intends to understand the system be-havior of fiber-reinforced elastomer composites embedded with shape memory alloy (SMA) wires by developing a theoretic model system. Two separate models, one dynamics SMA wire actuator and other describe bending composite are derived. The models then integrated analyze complete behavior. Numerical simulations mathematical conducted in MATLAB/Simulink results experimentally validated. obtained can be used for designing control algorithms shape,...