Closed-Loop Control of Force During Electrical Stimulation of Muscle

1980 ◽  
Vol BME-27 (6) ◽  
pp. 306-312 ◽  
Author(s):  
Patrick E. Crago ◽  
J. Thomas Mortimer ◽  
P. Hunter Peckham
Keyword(s):  
Electrical Stimulation ◽  
Closed Loop ◽  
Closed Loop Control ◽  
Loop Control ◽  
Stimulation Of

scholarly journals A Biological Micro Actuator: Graded and Closed-Loop Control of Insect Leg Motion by Electrical Stimulation of Muscles

PLoS ONE ◽  
2014 ◽  
Vol 9 (8) ◽  
pp. e105389 ◽  
Author(s):  
Feng Cao ◽  
Chao Zhang ◽  
Tat Thang Vo Doan ◽  
Yao Li ◽  
Daniyal Haider Sangi ◽  
...  
Keyword(s):  
Electrical Stimulation ◽  
Closed Loop ◽  
Closed Loop Control ◽  
Loop Control ◽  
Micro Actuator ◽  
Leg Motion ◽  
Stimulation Of

Closed-loop control of the heart rate by electrical stimulation of the vagus nerve

2006 ◽  
Vol 44 (3) ◽  
pp. 161-169 ◽  
Author(s):  
Marco Tosato ◽  
Ken Yoshida ◽  
Egon Toft ◽  
Vitas Nekrasas ◽  
Johannes J. Struijk
Keyword(s):  
Heart Rate ◽  
Electrical Stimulation ◽  
Vagus Nerve ◽  
Closed Loop ◽  
Closed Loop Control ◽  
Loop Control ◽  
Stimulation Of

EVALUATION OF CLOSED-LOOP CONTROL SYSTEM FOR RESTORING STANDING AND SITTING FUNCTIONS BY FUNCTIONAL ELECTRICAL STIMULATION

2005 ◽  
Vol 17 (01) ◽  
pp. 19-26 ◽  
Author(s):  
CHENG-LIANG LIU ◽  
CHUNG-HUANG YU ◽  
SHIH-CHING CHEN ◽  
CHANG-HUNG CHEN
Keyword(s):  
Electrical Stimulation ◽  
Functional Electrical Stimulation ◽  
Closed Loop ◽  
Spinal Cord Injuries ◽  
Control Method ◽  
Control Strategies ◽  
Evaluation Process ◽  
Closed Loop Control ◽  
Loop Control ◽  
Loop Control System

Functional electrical stimulation (FES) is a method for restoring the functional movements of paraplegic or patients with spinal cord injuries. However, the selection of parameters that control the restoration of standing up and sitting functions has not been extensively investigated. This work provides a method for choosing the four main items involved in evaluating the strategies for sit-stand-sit movements with the aid of a modified walker. The control method uses the arm-supported force and the angles of the legs as feedback signals to change the intensity of the electrical stimulation of the leg muscles. The control parameters, Ki and Kp, are vary for different control strategies. Four items are collected through questionnaires and used for evaluation. They are the maximum reactions of the two hands, the average reaction of the two hands, largest absolute angular velocity of the knee joints, and the sit-stand-sit duration time. The experimental data are normalized to facilitate comparison. Weighting factors are obtained and analyzed from questionnaires answered by experts and are added to evaluation process for manipulation. The results show that the best strategy is the closed-loop control with parameters Ki=0.5 and Kp=0.

Closed Loop Control of Index Finger Using Functional Electrical Stimulation

2018 ◽  
Vol 2018 (0) ◽  
pp. 1A1-J15 ◽  
Author(s):  
Yuu HASEGAWA ◽  
Tomoya KITAMURA ◽  
Hiroto MIZOGUCHI ◽  
Naoto MIZUKAMI ◽  
Sho SAKAINO ◽  
...  
Keyword(s):  
Electrical Stimulation ◽  
Functional Electrical Stimulation ◽  
Closed Loop ◽  
Index Finger ◽  
Closed Loop Control ◽  
Loop Control

scholarly journals Feedback control of the forearm movement of tetraplegic patient based on microsoft kinect and multi-pad electrodes

2013 ◽  
Vol 21 (1) ◽  
pp. 7-11 ◽  
Author(s):  
Matija Strbac ◽  
Nebojsa Malesevic ◽  
Radoje Cobeljic ◽  
Laszlo Schwirtlich
Keyword(s):  
Sensory Feedback ◽  
Closed Loop ◽  
Microsoft Kinect ◽  
Hand Position ◽  
Closed Loop Control ◽  
The Novel ◽  
Upper Arm ◽  
Loop Control ◽  
Novel Algorithm ◽  
Stimulation Of

We present a novel system for control of elbow movements by electrical stimulation of the biceps and triceps in tetraplegic patients. The operation of the system uses the novel algorithm and applies closed loop control. Movement of the arm is generated via multi-pad electrodes developed by Tecnalia Serbia, Ltd. by the stimulator that allows asynchronous activation of individual pads. The electrodes are positioned over the innervation of the biceps and triceps muscles on the upper arm. This layout allows distributed activation; thereby, selective and low fatiguing activation of paralyzed muscles. The sensory feedback comes from the image acquired by the Microsoft Kinect system and the depth stream analysis is performed in real time by the computer running in the MatLab environment. The image based feedback allows control of the hand position at the target by cocontraction of the antagonists. The control adjusts the stimulation intensity and results with the tracking of the desired movement. The algorithm was proven to operate efficiently in a tetraplegic patient.

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