Self-adjustment mechanisms and their application for orthosis design

Cai, Viet Anh Dung; Bidaud, Philippe; Hayward, Vincent; Gosselin, Florian

doi:10.1007/s11012-016-0574-0

Cited by 9 publications

(7 citation statements)

References 20 publications

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“…Table 1. Distribusi Frekuensi Berdasarkan Kategori Skor Self Adjustment Menurut (Cai et al, 2017) self adjustment dapat dijelaskan dalam tiga aspek, yaitu: (1) diri individu, (2) orang lain, (3) dan terjadinya perubahan. Sejalan dengan pendapat tersebut, self adjustment pada dasarnya terdiri dari dua aspek, yaitu: (1) self adjustment, yaitu kemampuan individu untuk menerima diri sendiri untuk mencapai hubungan yang harmonis dengan lingkungan, (2) penyesuaian sosial, yaitu proses mempengaruhi.…”

Section: Volunclassified

Kajian self adjustment pada mahasiswa kelas internasional

Handayani

Yuca

Hidayat

et al. 2021

JPPI

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Penelitian ini bertujuan untuk menganalisis self adjustment pada mahasiswa dan menguji perbedaan self adjustment mahasiswa kelas internasional. Populasi dalam penelitian ini adalah 212 mahasiswa kelas internasional Universitas Negeri Padang, dengan menggunakan total sampling yaitu menggunakan seluruh mahasiswa kelas internasional. Metode penelitian menggunakan deskriptif komparatif. Instrumen yang digunakan adalah “Inventory Self Adjustment Puji and Verlanda” (ISAPUVE) dengan reliabilitas 0,80. Kesimpulan dari penelitian ini adalah tidak terdapat perbedaan self adjustment mahasiswa laki-laki dan perempuan pada kelas internasional di Universitas Negeri Padang. Diharapkan UPBK (Unit Layanan Bimbingan dan Konseling) Universitas Negeri Padang memfasilitasi mahasiswa untuk dapat menekan self adjustment yang rendah melalui layanan yang tersedia di UPBK.

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Section: Volunclassified

Kajian self adjustment pada mahasiswa kelas internasional

Handayani

Yuca

Hidayat

et al. 2021

JPPI

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“…Researchers, thus, support using PSC joints which are believed to suit a diverse group of users. Though instances of PSC joints exist in the literature (Stienen et al, 2009 ; Celebi et al, 2013 ; Cai et al, 2016 ; Choi et al, 2016 ), their public usage is very limited with the likely reason being a lack of consensus and data on the performance of PSC joints. In this article, we will strive to resolve this dilemma by comparing all three types of joint designs (i.e., SA, PPC, and PSC).…”

Section: Introductionmentioning

confidence: 99%

Evaluating Knee Mechanisms for Assistive Devices

Patrick

Kumar²,

Hur³

2022

Front. Neurorobot.

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State-of-the-art knee braces use a polycentric mechanism with a predefined locus of the instantaneous center of rotation (centrode) and most exoskeleton devices use a knee mechanism with a single axis of rotation. However, human knees do not share a common centrode nor do they have a single axis. This leads to misalignment between the assistive device's joint axis and the user's knee axis, resulting in device migration and interaction forces, which can lead to sores, pain, and abandonment of the device over time. There has been some research into self-aligning knee mechanisms; however, there is a lack of consensus on the benefit of these mechanisms. There is no research that looked purely at the impact of the knee mechanisms, either. In this article, we compare three different knee brace mechanisms: single axis (SA), polycentric with predefined centrode (PPC), and polycentric with a self-aligning center of rotation (PSC). We designed and conducted an experiment to evaluate different joint mechanisms on device migration and interaction forces. Brace material, weight, size, cuff design, fitment location, and tightness were consistent across trials, making the knee joint mechanism the sole variable. The brace mechanisms had no significant effect on walking kinematics or kinetics. However, the PPC brace had greater interaction forces on the top brace strap than the SA and PSC. The PSC and SA had significantly lower interaction forces on the bottom strap compared to the PPC brace. The PSC had significantly less migration than both the SA and PPC braces. These results show that a PPC mechanism may not be beneficial for a wide range of users. This also shows that the PSC mechanisms may improve mechanism alignment and lessen device migration.

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“…Alignment disparities are difficult to prevent due to large inter-user variability and can create large stresses on the attachment system and underlying human anatomy. 15,16…”

Section: Introductionmentioning

confidence: 99%

“…Alignment disparities are difficult to prevent due to large inter-user variability and can create large stresses on the attachment system and underlying human anatomy. 15,16 An alternative to the rigid exoskeleton is the soft exoskeleton, where mechanical joint axes are omitted and the human limb itself serves as the mechanical structure. Actuators are attached between limb segments to augment the strength of the human subjected.…”

Section: Introductionmentioning

confidence: 99%

A task-based design methodology for robotic exoskeletons

Heidari

Wolbrecht

Pérez-Gracia

et al. 2018

Journal of Rehabilitation and Assistive Technologies Engineerin

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Introduction This study is aimed at developing a task-based methodology for the design of robotic exoskeletons. This is in contrast to prevailing research efforts, which attempt to mimic the human limb, where each human joint is given an exoskeleton counter-joint. Rather, we present an alternative systematic design approach for the design of exoskeletons that can follow the complex three-dimensional motions of the human body independent of anatomical measures and landmarks. With this approach, it is not necessary to know the geometry of the targeted limb but rather to have a description of its motion at the point of attachment. Methods The desired trajectory of the targeted limb has been collected through a motion capture system from a healthy subject. Then, an approximate dimensional synthesis has been employed to specify the size of the mechanism and its location with respect to the limb, while generating the desired trajectory. The procedure for this method, from motion capture to kinematic synthesis to mechanism selection and optimization, is validated with an illustrative example. Results The proposed method resulted an exoskeleton which follows the desired trajectory of the human limb without any need of aligning its joint to the corresponding human joints. Conclusion A method to design lower mobility exoskeletons for specific sets of human motion is presented; the approach result an exoskeleton with lesser actuation system while generating complex 3D limb motions, which in turn results a lighter exoskeletons. It also avoids a need to align each robotic joint axis with its human counterpart.

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Self-adjustment mechanisms and their application for orthosis design

Cited by 9 publications

References 20 publications

Kajian self adjustment pada mahasiswa kelas internasional

Kajian self adjustment pada mahasiswa kelas internasional

Evaluating Knee Mechanisms for Assistive Devices

A task-based design methodology for robotic exoskeletons

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