Design of a novel rotary-linear pneumatic actuator integrated with ultrasonic motion control mechanism

2015 ◽  
Author(s):  
Liang Wang ◽  
Yingting Wang ◽  
Tinghai Cheng ◽  
Tuo Wang ◽  
Mengfei Yin
Keyword(s):  
Motion Control ◽  
Control Mechanism ◽  
Pneumatic Actuator ◽  
Motion Control Mechanism

scholarly journals Modular Organization of Muscle Synergies to Achieve Movement Behaviors

2019 ◽  
Vol 2019 ◽  
pp. 1-9
Author(s):  
Kunkun Zhao ◽  
Zhisheng Zhang ◽  
Haiying Wen ◽  
Zihan Wang ◽  
Jiankang Wu
Keyword(s):  
Motion Control ◽  
Control Mechanism ◽  
Nonnegative Matrix ◽  
Movement Patterns ◽  
Motor Dysfunction ◽  
Muscle Synergy ◽  
Modular Organization ◽  
Muscle Synergies ◽  
Motion Primitives ◽  
Motion Control Mechanism

Muscle synergy has been applied to comprehend how the central nervous system (CNS) controls movements for decades. However, it is not clear about the motion control mechanism and the relationship between motions and muscle synergies. In this paper, we designed two experiments to corroborate the hypothesis: (1) motions can be decomposed to motion primitives, which are driven by muscle synergy primitives and (2) variations of motion primitives in direction and scale are modulated by activation coefficients rather than muscle synergy primitives. Surface electromyographic (EMG) signals were recorded from nine muscles of the upper limb. Nonnegative matrix factorization (NMF) was applied to extract muscle synergy vectors and corresponding activation coefficients. We found that synergy structures of different movement patterns were similar (α=0.05). The motion modulation indexes (MMI) among movement patterns in reaching movements showed apparent differences. Merging coefficients and reconstructed similarity of synergies between simple motions and complex motions were significant. This study revealed the motion control mechanism of the CNS and provided a rehabilitation and evaluation method for patients with motor dysfunction in exercise and neuroscience.

A Novel Motion Control Mechanism for Satellite Tracking Antenna Using Fuzzy Logic Control of Serial Robot

2021 ◽  
Author(s):  
Mohammad Reza Chalak Qazani ◽  
Houshyar Asadi ◽  
Shady Mohamed ◽  
Saeid Nahavandi ◽  
Joseph Winter ◽  
...  
Keyword(s):  
Fuzzy Logic ◽  
Motion Control ◽  
Fuzzy Logic Control ◽  
Control Mechanism ◽  
Satellite Tracking ◽  
Logic Control ◽  
Serial Robot ◽  
Motion Control Mechanism

Dual-Hierarchical Control Mechanism of Interpersonal Embodied Interactions in Cooperative Walking

2011 ◽  
Vol 15 (5) ◽  
pp. 534-544 ◽  
Author(s):  
Takeshi Muto ◽  
◽  
Yoshihiro Miyake ◽  
Keyword(s):  
Motor Control ◽  
Motion Control ◽  
Control Mechanism ◽  
Control Structure ◽  
Control Function ◽  
Hierarchical Control ◽  
Control Mechanisms ◽  
Human Interface ◽  
Entrainment Process ◽  
Motion Control Mechanism

Interpersonal embodied interactions play a significant role as emergent functions in human development and rehabilitation. However, a framework for applying embodied interactions to “human interface systems” to support such emergent functions has not yet been suggested because the details of the motorcontrol mechanism have not yet been clarified. In this study, the interpersonal cooperative walking motions of two humans, as an example of such a mechanism, have been replicated and their motor-control mechanisms analyzed. The results indicate that the hierarchical dynamics were derived from an interpersonal footstep entrainment process and an intrapersonal interaction of arm and footstep motions. We suggest that embodied interactions in cooperative walking are achieved by a dual-hierarchical control structure related to emergence of the phase-control function of interpersonal cooperative walking, based on an automatic control mechanism for interpersonal entrainment of footstep motions and an intrapersonal voluntary-motion-control mechanism.

scholarly journals Researches regarding the use of non-conventional actuators

2021 ◽  
Vol 3 (10) ◽  
pp. 1-10
Author(s):  
I.C. Duțu ◽  
T. Axinte ◽  
E. Maican ◽  
C. Frățilă ◽  
R.G. Damian ◽  
...  
Keyword(s):  
Motion Control ◽  
Material Handling ◽  
Programmable Logic Controller ◽  
Pneumatic Actuator ◽  
Programmable Logic ◽  
History Of ◽  
Fluidic Muscle ◽  
Muscle Actuators

The purpose of this article is to present relevant concepts about the study of electro-pneumatic circuits using fluidic muscle actuators. The fluidic muscle is a type of pneumatic actuator having an extensive history of technical applications in the biomechanical field since the 1955. After Introduction, the authors study two pneumatic circuits. In fact, the first pneumatic circuit in this paper has only one actuator (fluidic muscle 1-1), but the second pneumatic circuit has two actuators (fluidic muscles 2-1 and 2-2. Further on, the authors present two electro-pneumatic schematics, a simple electro-pneumatic circuit and another electro-pneumatic circuit with PLC (Programmable Logic Controller). This type of actuator is used in robotics, material handling, motion control, industrial field and other applications. The pneumatic and electro-pneumatic circuits given in this paper are made using FluidSim software from Festo. In this case, the fluidic muscles are only non-conventional actuators. However, in pneumatic installations as well as in electro-pneumatic installations, the non-conventional actuators have the following advantages: strength, compactness, reliability, low price, ease of assembly or disassembly from their circuits, etc. Of course, in practice are many types of fluidic muscles, which are used in electro-pneumatic installations.

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