Musculoskeletal Simulation and Evaluation of Support System Designs

Miehling, Jörg; Wolf, Andreas; Wartzack, Sandro

doi:10.1007/978-3-030-01836-8_21

Cited by 13 publications

(13 citation statements)

References 22 publications

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“…For product development, movement prediction approaches need to be developed that address these challenges, depending on the purpose. The development of products that have a high interaction level with the user, like exoskeletons (Miehling et al, 2018), demands movement prediction approaches that focus on the feedback loop (interface) between user and product. Optimal control algorithms, together with suitable force prediction methods (Krüger and Wartzack, 2017;Fluit et al, 2014) may enable the computation of a dynamic equilibrium between the user's movement behaviour and the product's dynamic behaviour.…”

Section: Psychologymentioning

confidence: 99%

“…Those products represent the highest level of interaction a user can possibly have with a product. Accordingly, the analysis and evaluation of the user-product interaction is crucial for the development of those products (Miehling et al, 2018). To virtually model this interaction, an integration of finite element product models into a musculoskeletal human model seems promising.…”

Section: Co-simulation/ Integration Of Multibody and Finite-element-mmentioning

confidence: 99%

See 1 more Smart Citation

Roadmap to Consider Physiological and Psychological Aspects of User-product Interactions in Virtual Product Engineering

Wartzack¹,

Schröppel²,

Wolf³

et al. 2019

Proc. Int. Conf. Eng. Des.

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To successfully facilitate user-centred design, a multitude of different aspects has to be considered, from purely physiological to psychological-emotional factors. The overall aim is to increase the customer satisfaction by enhancing the fit between products and their users in the respective context of use. Further virtualisation of user-centred design processes holds the potential to convey the concepts of frontloading and predictive engineering from classical product engineering. Our vision is to facilitate a comprehensive consideration of user-product interactions in virtual product engineering operationalised by the mission to develop methods and tools to assess and design user-product interactions according to physiological and psychological aspects. A variety of work has already been done to model musculoskeletal user groups, to configure, predict, simulate and optimise physical user-product interactions, to integrate such models into CAD or to map individual subjective values to product design. Nevertheless, there are still research areas to be addressed to enable a comprehensive implementation of the mentioned approach. These are discussed in the present contribution.

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Section: Psychologymentioning

confidence: 99%

Section: Co-simulation/ Integration Of Multibody and Finite-element-mmentioning

confidence: 99%

Roadmap to Consider Physiological and Psychological Aspects of User-product Interactions in Virtual Product Engineering

Wartzack¹,

Schröppel²,

Wolf³

et al. 2019

Proc. Int. Conf. Eng. Des.

Self Cite

View full text Add to dashboard Cite

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“…On the one hand, MHMs can be used to estimate the effects of support systems by testing their working principles with the MHM prior to design development. For example, (Miehling et al, 2018) demonstrated the potential positive effects of knee support during lifting movements by applying an abstract moment to the knee. On the other hand, MHMs also offer the potential to simulatively validate the utility of existing exoskeletons or to perform parameter studies to optimize existing designs.…”

Section: Introductionmentioning

confidence: 99%

A Musculoskeletal Human Model-Based Approach for Evaluating Support Concepts of Exoskeletons for Selected Use Cases

et al. 2022

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This paper presents an approach for evaluating exoskeleton support concepts through biomechanical analyses on a musculoskeletal human model. By simplifying the support forces of an exoskeleton as external forces, different support concepts can be biomechanically evaluated for the respective use case without concrete design specifications of the exoskeleton. This enables an estimation of the resulting relief and strain on the human body in the early stages of exoskeleton development. To present the approach, the use case of working at and above head height with a power tool is chosen.

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“…61 Facilitating control with compliant biarticular actuators: Studies on 62 biomechanics of human gaits and robotics show that biarticular muscles help to 63 generate motions in a more energy efficient way [34,42]. In fact, these muscles actuate 64 two joints simultaneously, transfer the energy towards distal joints and further control 65 the output force direction [34,43], [35]. Given these features, biarticular assistive devices 66 can be more effective in reducing energy consumption during walking.…”

mentioning

confidence: 99%

“…For evaluating the applicability and performance of the proposed BAExo design using 235 ABC control, we employed OpenSim software (https://opensim.stanford.edu). Due 236 to difficulties in (human) experiment based validation of assistive devices' design and 237 control, the method of using neuromuscular simulation models is becoming more 238 popular[5,30,[64][65][66]. By reviewing several studies with this approach Grabke et al,OpenSim is an open source software for developing experiment-based models of 242 musculoskeletal structures and creating dynamic simulations of movement[68].…”

mentioning

confidence: 99%

From a biological template model to gait assistance with an exosuit

Firouzi

Davoodi

Bahrami

et al. 2020

Preprint

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By invention of soft wearable assistive devices, known as exosuits, a new aspect in assisting unimpaired subjects is introduced. In this study, we designed and developed an exosuit with compliant biarticular thigh actuators, called BAExo. Unlike common method of using rigid actuators in exosuits, the BAExo is made of serial elastic actuators (SEA) resembling artificial muscles (AM). This bioinsipred design is complemented by the novel control concept of using the ground reaction force to adjust these AMs' stiffness in the stance phase. By locking the motors in the swing phase the SEAs will be simplified to passive biarticular springs, which is sufficient for leg swinging. The key concept in our design and control approach is synthesizing human locomotion to develop assistive device, instead of copying the outputs of human motor control. Analysing human walking assistance using an experiment-based OpenSim model demonstrates the advantages of the proposed design and control of BAExo, regarding metabolic cost reduction and efficiency of the system. In addition, pilot experiments with the recently developed BAExo hardware support the applicability of the introduced method. Author summaryAging and mobility of elderly people are of crucial concern in developed countries. The U.S. Census Bureau reports that by the middle of the 21st century, about 80 million Americans will be 65 or older. According to the group's research, medical costs resulting from falls by the elderly are expected to approach $32.4 billion by 2020. Therefore, assistance of elderly people and making the assistive devices more intelligent is a need in near future. However, this is not the only application of assistive devices. Exosuits, as soft wearable robots, introduced a new aspect in assisting a large range of population, even healthy young people. We introduce a novel design and control method for a new exosuit. As the research in the field of wearable assistive devices is growing in recent years and its application in daily life becomes more evident for the society, such studies with a unique view in design and control could have a significant impact. Our proposed biologically inspired approach could be potentially applied to other exosuits. Introduction 1 Lower limb exoskeletons for assisting people with decreased locomotion abilities has 2 attracted the attention of researchers [1] and the healthcare industry [2, 3]. Assistive 3 March 21, 2020 1/24 6 about aging. For example, by aging, muscle force and power decrease and to reduce the 7 cost of elderly and patients locomotion, assistive devices are demanded [6, 7]. 8 One of the common goals of assistive device designers is to reduce the metabolic cost 9 of locomotion [8]. This feature is important in all above-mentioned cases and situations. 10 In the last couple of years researchers have succeeded in significantly improving the 11 metabolic cost reduction in human gaits using powered exoskeletons [1,[9][10][11]. 12Powered exoskeletons can be categorized as (1) traditional ones with rigid stru...

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Musculoskeletal Simulation and Evaluation of Support System Designs

Cited by 13 publications

References 22 publications

Roadmap to Consider Physiological and Psychological Aspects of User-product Interactions in Virtual Product Engineering

Roadmap to Consider Physiological and Psychological Aspects of User-product Interactions in Virtual Product Engineering

A Musculoskeletal Human Model-Based Approach for Evaluating Support Concepts of Exoskeletons for Selected Use Cases

From a biological template model to gait assistance with an exosuit

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