Electro-hydrostatic actuators with Series Dissipative property and their application to power assist devices

Kaminaga, Hiroshi; Amari, Tomoya; Niwa, Yamato; Nakamura, Yoshihiko

doi:10.1109/biorob.2010.5626341

Cited by 13 publications

(6 citation statements)

References 10 publications

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“…Another significant research field is the detection of the user's intended motion [8,16]. Some research projects focus on the man-machineinteraction providing the actuation itself [6,9,10,12,13].…”

Section: Active Knee Orthosesmentioning

confidence: 99%

Low-cost active knee orthoses – a systematic evaluation

Janzen

Stewart²,

Pott³

2018

Current Directions in Biomedical Engineering

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The aging of humans induces muscle weakness. Muscle weakness results the inability to climb stairs or stand up from a chair and thus, is one of the first steps towards elderly having a less autonomous and self-sufficient life. Therefore, an accessible active knee orthosis, which especially supports these movements would be of great assistance. Recent research projects have focused on feasibility, perfection of motion control and imitation of human movement. For active knee orthoses to be accessible it must be affordable. Hence, this paper systematically evaluates the current research projects around active knee orthosis and discuss the possibilities of implementing a lowcost active knee orthosis.

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Section: Active Knee Orthosesmentioning

confidence: 99%

Low-cost active knee orthoses – a systematic evaluation

Janzen

Stewart²,

Pott³

2018

Current Directions in Biomedical Engineering

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“…The EHA has been equipped on fighters and civil aviation aircrafts (Anton and Yuan, 2016; Kirchmann et al, 2016; Li et al, 2018). Many researchers have done a lot of studies on the EHA (Ahn et al, 2013; Habibi and Goldenberg, 2000; Kaminaga et al, 2010; Kreitz et al, 2014; Shi et al, 2018; Zhang et al, 2018). If the EHA is used in the exoskeleton, the efficiency of hydraulic energy will be significantly improved.…”

Section: Introductionmentioning

confidence: 99%

A novel pump-valve coordinated controlled hydraulic system for the lower extremity exoskeleton

Jinlin

Wang

Cao

et al. 2020

Transactions of the Institute of Measurement and Control

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In order to reduce the weight and improve the energy efficiency of the lower extremity exoskeleton, a novel pump-valve coordinated controlled (PVCC) hydraulic system is presented. This hydraulic system only uses one electro-hydrostatic unit (EHU) and two valves to drive two hydraulic cylinders at the hip and knee of the lower extremity exoskeleton. The PVCC hydraulic system has the advantage of high energy conversion efficiency of the electro-hydrostatic actuator (EHA), which consists of one EHU and one hydraulic cylinder. To meet the requirements of the moment and speed of each joint of the exoskeleton, the proportional valve and on-off valve are added to adjust the flow into two hydraulic cylinders. The performance of EHU is tested by some hydraulic experiments, and the performance of the PVCC hydraulic system is analyzed by AMESim. The results show that the novel hydraulic system can only use one EHU to drive two hydraulic cylinders simultaneously under the premise of meeting the functional requirements of the exoskeleton.

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“…The controller have a task to compensate pump friction or pressure loss due to fluid friction that occurs in hoses. Specifications for actuator used in [35][36][37] are given in Table 2. Testing results of the power augmenting device show that the energy consumption of operator was reduced by 25% [36].…”

Section: A Review Of Eha Developmentmentioning

confidence: 99%

“…7, was used for the knee power augmenting [35][36][37] to improve physical strength of a human, requiring less skills for effective operation (Fig. 8).…”

Section: A Review Of Eha Developmentmentioning

confidence: 99%