Desain Eksperimental Hip Joint Control Berbasis Metode Cycle-to-Cycle Control untuk Penderita Hemiplegia

Agustin, Fusti Nadya Desti Dwi (2023) Desain Eksperimental Hip Joint Control Berbasis Metode Cycle-to-Cycle Control untuk Penderita Hemiplegia. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Hemiplegic gait adalah gejala post stroke yang ditandai dengan gangguan ayunan alami pada pinggul dan lutut dengan sirkumduksi kaki yang menyebabkan kemampuan berjalan normal menjadi terhambat. Stimulasi listrik menjadi salah satu bentuk rehabilitasi yang telah diujikan pada beberapa penelitian dan terbukti efektif dalam membantu pemulihan gangguan mobilitas ekstremitas bawah. Penelitian ini meninjau secara lebih jauh mengenai efektivitas stimulasi listrik terhadap segmen hip yang merupakan bentuk fleksibilitas dari stabilitas penyangga berat tubuh selama fase berjalan. Metode perancangan sistem dilakukan dengan Functional Electrical Stimulation (FES) dengan kontrol Fuzzy Logic Controller (FLC) berbasis cycle-to-cycle control. Penggabungan sistem akan menghasilkan stimulasi otot yang mempengaruhi gerakan fleksi hip pada otot Rectus femoris, dan otot Vastus lateralis, serta gerakan ekstensi hip pada otot Biceps femoris dan otot Gluteus maksimus. FLC akan menghasilkan keluaran stimulation burst duration yang mengatur durasi FES saat menstimulasi otot. Stimulasi dengan wearable sensor akan menghasilkan nilai body angle yang berguna untuk restorasi gerakan berjalan dengan tujuan menormalkan kembali pola gait pada subjek. Efektivitas kontroler fuzzy dapat dilihat dari parameter yang dihasilkan setelah stimulasi, dimana didapatkan nilai MHFsw, pada kondisi berjalan hemiplegia dengan stimulasi memiliki nilai sudut yang lebih besar yang bernilai (31,1±2,57) derajat jika dibandingkan kondisi berjalan hemiplegia tanpa stimulasi (22 ±0,5) derajat dan mampu mencapai target, yaitu sebesar 29,5 derajat. Sehingga kondisi ini dapat dikatakan lebih baik. Sedangkan pada MHEst, subjek berjalan kondisi hemiplegia dengan stimulasi memiliki nilai sudut yang lebih rendah yaitu, (-7,7±4,7) derajat jika dibandingkan berjalan kondisi hemiplegia tanpa stimulasi (-11,6±2,10) derajat. Nilai efficiency rate sebesar angka 50% dengan error 0,631 yang menyatakan keberhasilan capaian sudut hip joint terhadap target. Sehingga berdasarkan data yang dihasilkan, dapat disimpulkan bahwa stimulasi listrik efektif dalam memulihkan sudut capaian hip pada subjek yang berjalan seolah hemiplegia
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Hemiplegic gait is a post-stroke symptom characterized by impaired natural swing at the hip and knee with foot circumduction, leading to hindered normal walking ability. Electrical stimulation has been tested in several studies and proven effective in aiding the recovery of lower extremity mobility impairments. This research further investigates the effectiveness of electrical stimulation on the hip segment, which represents the flexibility of weight-bearing stability during the walking phase. The system design method is carried out with Functional Electrical Stimulation (FES) using a cycle-to-cycle control based Fuzzy Logic Controller (FLC). The integration of the system will result in muscle stimulation that influences hip flexion movement in the Rectus femoris and Vastus lateralis muscles, as well as hip extension movement in the Biceps femoris and Gluteus maximus muscles. FLC will produce stimulation burst duration output that regulates the FES duration during muscle stimulation. Stimulation with a wearable sensor will generate body angle values useful for gait restoration with the goal of normalizing gait patterns in subjects. The effectiveness of the fuzzy controller can be seen from the parameters produced after stimulation, where the value of MHFsw, in the hemiplegic walking condition with stimulation, has a larger angle value (31.1±2.57) degrees compared to the hemiplegic walking condition without stimulation (22 ±0.5) degrees and can reach the target, which is 29.5 degrees. Thus, this condition can be considered better. Meanwhile, in MHEst, subjects walking in the hemiplegic condition with stimulation have lower angle values, which are (-7.7±4.7) degrees compared to walking in the hemiplegic condition without stimulation (-11.6±2.10) degrees. The efficiency rate value is 50% with an error of 0.631, indicating the success of achieving the hip joint angle target. Based on the data generated, it can be concluded that electrical stimulation is effective in restoring hip joint angle achievement in subjects walking as if they have hemiplegia.

Item Type: Thesis (Other)
Uncontrolled Keywords: Functional Electrical Stimulation, Hemiplegia, Stimulasi Otot, Muscle Stimulation
Subjects: R Medicine > RM Therapeutics. Pharmacology > RM871 Electric stimulation.
R Medicine > RM Therapeutics. Pharmacology > RM950 Rehabilitation technology.
T Technology > TA Engineering (General). Civil engineering (General) > TA1637 Image processing--Digital techniques
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7888.3 Digital computers
Divisions: Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Biomedical Engineering > 11410-(S1) Undergraduate Thesis
Depositing User: Fusti Nadya Desti Dwi Agustin
Date Deposited: 05 Oct 2023 07:55
Last Modified: 05 Oct 2023 07:55
URI: http://repository.its.ac.id/id/eprint/103749

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