Design of a Virtual Testing Platform for assessing Prosthetic Knee Joints

Hoh, Sam; Chong, Junjie; Etoundi, Appolinaire C.

doi:10.1109/icarm49381.2020.9195275

Cited by 6 publications

(2 citation statements)

References 9 publications

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“…As part of the future work, Infrared cameras will be positioned to remotely inspect wear and proper operation in long-term testing like those necessitated by international quality standards. This work is the continuation from the design of a modular rig (Hoh et al, 2020) and has enormous potential regarding the streamlining of the testing phase of new prostheses as well as gaining insights into the design of future bio-inspired limb joints. participants provided their written informed consent to participate in this study.…”

Section: Discussionmentioning

confidence: 99%

A Robotic Test Rig for Performance Assessment of Prosthetic Joints

et al. 2022

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Movement within the human body is made possible by joints connecting two or more elements of the musculoskeletal system. Losing one or more of these connections can seriously limit mobility, which in turn can lead to depression and other mental issues. This is particularly pertinent due to a dramatic increase in the number of lower limb amputations resulting from trauma and diseases such as diabetes. The ideal prostheses should re-establish the functions and movement of the missing body part of the patient. As a result, the prosthetic solution has to be tested stringently to ensure effective and reliable usage. This paper elaborates on the development, features, and suitability of a testing rig that can evaluate the performance of prosthetic and robotic joints via cyclic dynamic loading on their complex movements. To establish the rig’s validity, the knee joint was chosen as it provides both compound support and movement, making it one of the major joints within the human body, and an excellent subject to ensure the quality of the prosthesis. Within the rig system, a motorised lead-screw simulates the actuation provided by the hamstring-quadricep antagonist muscle pair and the flexion experienced by the joint. Loads and position are monitored by a load cell and proximity sensors respectively, ensuring the dynamics conform with the geometric model and gait analysis.Background: Robotics, Prosthetics, Mechatronics, Assisted Living.Methods: Gait Analysis, Computer Aided Design, Geometry Models.Conclusion: Modular Device, Streamlining Rehabilitation.

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Section: Discussionmentioning

confidence: 99%

A Robotic Test Rig for Performance Assessment of Prosthetic Joints

et al. 2022

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“…A virtual model of a prosthetic knee testing platform bed for analyzing running-specific was built. The preliminary inverse dynamics analysis was conducted using the virtual model with a standard pin joint in place of a knee joint [7]. A new magnetorheological prosthetic knee joint using a magnetorheological damper as the brake was designed, and a dynamic model was established according to the gait data of healthy people walking on flat ground.…”

Section: Introductionmentioning

confidence: 99%

Control system and kinematic analysis of lower limb prosthetic knee joint

Liu

Fang

et al. 2023

Materialwissenschaft Werkst

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In order to study the motion characteristics of the prosthesis, a three‐dimensional model of the test platform was established, and the corresponding control scheme was designed according to this model. For the lower limb prosthesis test platform, a fuzzy proportion‐integration‐differentiation (PID) control model was created. Second, the matlab modules were used to construct the virtual model, and the goal function‘s control research was conducted. Finally, a virtual model was created, and the outcomes were studied, in order to assess the differences between the control results of proportional‐integral‐differential controller and fuzzy proportional‐integral‐differential controller. The results verify that the test platform using fuzzy proportional‐integral‐differential controller is capable of greater stability. The lower limb prosthetic knee joint test platform was built, and the corresponding experimental research was carried out on the motion of the lower limb prosthetic knee joint. The experimental data showed that the angle error of the hip joint was within 2° when the normal human gait was walking on the ground. The error of the joint angle does not exceed 3°. The prosthesis can clearly better mimic the angles of the hip and knee joints.

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