scholarly journals A Variation Reduction in the Tele-Abrasive System: A Study of Human Movement

2021 ◽  
Vol 11 (16) ◽  
pp. 7298
Author(s):  
Ranon Jientrakul ◽  
Chumpol Yuangyai ◽  
Supapan Chaiprapat
Keyword(s):  
Movement Pattern ◽  
Arm Movement ◽  
Human Movement ◽  
Operating Costs ◽  
Training Period ◽  
Variation Reduction ◽  
System A ◽  
Human Arm ◽  
Conventional Systems ◽  
Human Arm Movements

In a tele-abrasive task, it is principally human arm movements that cause variation in the position of the abrasive nozzle, thereby resulting in high operating costs and low productivity. It is difficult to design a system that can minimize the variation that accrues from operators behaving differently, which is difficult to predict. Although skilled operators can reduce this variation, becoming a skillful operator requires a lengthy training period. In this work, a two-stage variation streaming technique was used to extract variation sources in a tele-abrasive system. Furthermore, we propose an integrated human–computer approach to control variation in these systems—an approach that applies an innovative human arm movement pattern incorporated with a Kalman filter into a standard system. A virtual tele-abrasive system was used to validate our approach. Furthermore, compared with conventional systems, the proposed approach will help operators to perform abrasive tasks more comfortably and require a shorter training period.

scholarly journals Variation minimization in tele-sandblasting system: the effect of human-arm movement error

2018 ◽  
Vol 192 ◽  
pp. 01052
Author(s):  
Ranon Jientrakul ◽  
Pornsak Attavanish ◽  
Pholchai Chotiprayanakul ◽  
Sunpasit Limnararat ◽  
Chumpol Yuangyai
Keyword(s):  
Kalman Filter ◽  
Operating Cost ◽  
Movement Pattern ◽  
Arm Movement ◽  
Experimental Results ◽  
Training Period ◽  
New Approach ◽  
Training Time ◽  
Movement Error ◽  
Human Arm

In tele-sandblasting task, human arm movement is a critical source of producing variation in position of sandblasting nozzle resulting in high operating cost and low productivity. Each operator behaves differently leading to unpredictable movements. Skilled operators are able to reduce the variation; however, developing skills requires a training period. In this paper, we proposed a new approach which is the use of a novel operator's arm movement pattern incorporated with a Kalman filter to reduce the effect of human-arm movement error. A virtual tele-sandblasting system is used to validate our approach. The experimental results verify that our proposed approach is able to significantly reduce the effect of human arm movement error. The approach helps operators to perform the task more comfortably and takes short training time.

Arm Trajectory Modifications During Reaching Towards Visual Targets

1991 ◽  
Vol 3 (3) ◽  
pp. 220-230 ◽  
Author(s):  
Tamar Flash ◽  
Ealan Henis
Keyword(s):  
Target Location ◽  
Movement Time ◽  
Sudden Change ◽  
Motor Task ◽  
Arm Movements ◽  
Arm Movement ◽  
Hand Motion ◽  
Original Plan ◽  
Human Arm ◽  
Human Arm Movements

In this paper we study the question of how an aimed arm movement is modified in response to a sudden change in target location occurring during the reaction or movement time. Earlier monkey and human studies demonstrated that aimed arm movements can be elicited in quick succession, without appreciable delays in responding to the target displacement, beyond the normal reaction time. Nevertheless, it is not yet clear how this motor task is performed. A first guess is that when a new visual stimulus appears the old plan is aborted and a new one conceived. Upon analyzing human arm movements, however, we find that the observations can be well accounted for by a different movement modification scheme. It appears that a new plan is vectorially added to the original plan. Among the implications of this result is the possibility of parallel planning of elemental movements and further support for the idea that arm movements are internally represented in terms of hand motion through external space.

A Review of Desiccant Cooling Systems

1993 ◽  
Vol 115 (1) ◽  
pp. 1-8 ◽  
Author(s):  
D. G. Waugaman ◽  
A. Kini ◽  
C. F. Kettleborough
Keyword(s):  
Operating Costs ◽  
Coefficient Of Performance ◽  
Low Grade ◽  
Cooling Systems ◽  
The Past ◽  
Cooling Coils ◽  
Conventional Cooling ◽  
Commercial Applications ◽  
Conventional Systems ◽  
Made In

This paper describes recent published design advances that have been made in desiccant cooling systems. In desiccant cooling cycles, the desiccant reduces the humidity of the air by removing moisture from the air. Then the temperature is reduced by other components such as heat exchangers, evaporative coolers, or conventional cooling coils. The main advantage that desiccant cooling systems offer is the capability of using low-grade thermal energy. Desiccant cooling systems for residential and commercial applications are now being used to reduce energy-operating costs. However, the initial costs are comparatively high. The focus of research for the past decade has been to develop desiccant systems with a high coefficient of performance. Recent studies have emphasized computer modeling and hybrid systems that combine desiccant dehumidifiers with conventional systems.

Minimum muscle tension-change model for human arm movement

1990 ◽  
Vol 11 ◽  
pp. S54 ◽  
Author(s):  
Yoji Uno ◽  
Mitsuo Kawato ◽  
Ryoji Suzuki
Keyword(s):  
Muscle Tension ◽  
Arm Movement ◽  
Change Model ◽  
Human Arm ◽  
Tension Change

Arm Movement Analysis in Human Daily Life for Improving Durability of Artificial Elbow Joint

2020 ◽  
Author(s):  
Chihiro Kamio ◽  
Tatsuhito Aihara ◽  
Gaku Minorikawa
Keyword(s):  
Daily Life ◽  
Human Life ◽  
Arm Movement ◽  
Movement Analysis ◽  
Human Movement ◽  
Healthcare Applications ◽  
Artificial Joints ◽  
Measuring Device ◽  
Movement Data ◽  
Set Up

Abstract Human movement data can contribute to the quality improvement of industrial and medical products affected by such movement. Such data can be used to improve the quality of industrial products as well as in healthcare applications, such as the development of artificial joints. To develop and design artificial joints with enhance durability, it is necessary to set up standards of durability using human movement data in daily life. The aim of this study is to obtain data that contributes to the improvement in durability of artificial elbow joints. We have developed a wearable device that can measure its self-acceleration, angular velocity, and quaternions to collect human movement data continuously for long-term. Additionally, we collected the arm movement data of 30 participants using the developed device. The participants of this study carried on with their normal lives with the measuring device worn on their wrist. This study calculated the posture of the wrist over time using quaternions and mainly analyzed posture changes. We clarified the characteristics and trends of the movement of bending the elbow in daily human life.

What is the Biomechanical Principle of Forehand Smash in Badminton? - Article Review

2020 ◽  
Vol 7 (2) ◽  
pp. 221-229
Author(s):  
Gilang Estina Putra ◽  
Ria Lumintuarso
Keyword(s):  
Movement Patterns ◽  
Movement Pattern ◽  
Human Movement ◽  
Biomechanical Analysis ◽  
Future Research ◽  
Good Movement

SummaryThe pattern of human movement is strongly influenced by biomotor conditions, age development will affect the level of biomotor maturity. Forehand smash is one of the techniques that every badminton athlete must master well. To do this stroke well, a good movement pattern is needed, biomotor maturity which in this study is related to the age of the athlete. So that the development of age will cause differences in movement patterns which in this study analyzes the forehand smash movement patterns in badminton based on age. It is known that the most efficient badminton technique for gaining points in badminton is the smash. The smash-hit is more likely to produce a fast shuttle lock rate performed using the forehand smash technique. So that in this study the writer will analyze a technique in badminton, namely the forehand smash technique. These findings contribute to future research on the biomechanical analysis of forehand smash motion in badminton.

scholarly journals Evaluation of a Bio-impedance Method for Measuring Human Arm Movement

2002 ◽  
Vol 43 (5) ◽  
pp. 637 ◽  
Author(s):  
Jong Chan Kim ◽  
Soo Chan Kim ◽  
Ki Chang Nam ◽  
Seon Hui Ahn ◽  
Mignon Park ◽  
...  
Keyword(s):  
Arm Movement ◽  
Impedance Method ◽  
Human Arm

Experimental Study and Modeling of Equilibrium Point Trajectory Control in Single and Double-Joint Arm Movements

2009 ◽  
Author(s):  
Kai Chen ◽  
Richard A. Foulds ◽  
Katharine Swift ◽  
Sergei Adamovich
Keyword(s):  
Equilibrium Point ◽  
Time Delays ◽  
Arm Movement ◽  
Neuromuscular Control ◽  
Muscle Stimulation ◽  
Time Varying ◽  
Shoulder Joints ◽  
Human Arm ◽  
Neural Transmission ◽  
Human Joint

This paper discusses a new model of neuromuscular control of elbow and shoulder joints based on the Equilibrium Point Hypothesis (EPH). The earlier model [1] suggests that the incorporation of relative damping within reflex loops can maintain the dynamic simplicity of the EPH, while being robust over the range of human joint velocities. The model presented here, extends previous work with the use of experimental Electromyography data of 2 muscles to determine the timing parameters of the virtual trajectories and the inclusion of physiological time delays to account for neural transmission and muscle stimulation/activation delays. This model uses delays presented in the literature by other researchers, with a goal of contributing to a resolution of arguments regarding the controversial arguments in the planning sequences. Therefore, this study attempts to demonstrate the possibility for using descending CNS signals to represent relatively simple, monotonic virtual trajectories of the time varying Equilibrium Point for the control of human arm movement. In addition, the study demonstrates that these virtual trajectories were robust enough to control and coordinated movement of elbow and shoulder joints discussed.

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