Effect of Rear Wheel Suspension on Tilt‐in‐Space Wheelchair Shock and Vibration Attenuation

Abstract

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Vibration Transmission during Manual Wheelchair Propulsion: A Systematic Review

“…Moreover, suspensions decrease the amount of vibration induced by a shock. Differences were observed on P t-Acc and P w-Acc during the shock simulation experiment [50,51]. MWC, which reported the lowest amount of vibration, was suspended (i.e., Quickie XTR MWC, spring damper suspension) [50,52,53].…”

“…Hence, P Acc varied noticeably between articles (see Table 3). For instance, on the seat, P w-Acc ranged from 8 to 33 m/s 2 for curb descent [50] and from 3 to 8 m/s 2 for propulsion on a simulated road course [51]. Drum shock simulator (inducing acceleration of 1 to 4 m/s 2 ) generates lower P t-Acc at the head than curb descent (13 to 17 m/s 2 ) [52,53].…”

“…Regarding the amount of vibration, the efficacy of rear-wheel suspension in decreasing vibration is questionable. Although some articles indicated no difference between suspended and conventional MWC [8,45], other articles revealed that suspension decreased the amount of deleterious vibration [50,51,62]. Moreover, a significant difference was observed only for some MWC (i.e., Quickie XTR suspended MWC) [50].Besides, under certain conditions, a suspended MWC induced a higher amount of vibration than a conventional MWC (see Table 8).…”

“…The use of the ISO 2631 standard is even more inappropriate as no article complied with all of its recommendations. For instance, the time of exposure (e.g., less than 1 min of measurement [41,51]) was shorter than the real duration of real daily life conditions (e.g., around 2 h of movement distributed over 13 h on the MWC [45]). In addition to that, the amount of vibration on the footrest and the backrest were neglected to represent the total amount of vibration received by the MWC user [45].…”

Multiple Control Assistive Wheelchair for Lower Limb Disabilities & Elderly People

“…Using a motor driver is because the motors cannot be connected to the Arduino directly as they don't get su cient power. L239D IC is 16 pin IC out of which 4 pins are input (2, 7, 10 & 15) and 4 pins are output (3,6,11,14) used to control the staring mechanism using an Arduino.…”