Relevant bibliographies by topics / Legged effects

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Legged effects'

Author: Grafiati
Published: 4 June 2021
Last updated: 19 February 2022

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Journal articles on the topic "Legged effects"

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Miyachi, Motohiko, Hirofumi Tanaka, Kenta Yamamoto, Akira Yoshioka, Kouki Takahashi, and Sho Onodera. "Effects of one-legged endurance training on femoral arterial and venous size in healthy humans." Journal of Applied Physiology 90, no. 6 (2001): 2439–44. http://dx.doi.org/10.1152/jappl.2001.90.6.2439.

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The cross-sectional area (CSA) of large-conductance arteries increases in response to endurance training in humans. To determine whether training-induced changes in arterial structure are systemic in nature or, rather, are confined to the arteries supplying exercising muscles, we studied 10 young men who performed one-legged cycle training [80% of one-legged peak O2 uptake (V˙o 2 peak), 40 min/day, 4 days/wk] for 6 wk and detraining for another 6 wk. There were no significant differences in baseline one-leggedV˙o 2 peak and CSA of the common femoral artery and vein (via B-mode ultrasound) betw
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Abedinnasab, Mohammad H., Farzam Farahmand, Bahram Tarvirdizadeh, Hassan Zohoor, and Jaime Gallardo-Alvarado. "Kinematic effects of number of legs in 6-DOF UPS parallel mechanisms." Robotica 35, no. 12 (2017): 2257–77. http://dx.doi.org/10.1017/s0263574716000862.

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SUMMARYIn this paper, we study the kinematic effects of number of legs in 6-DOF UPS parallel manipulators. A group of 3-, 4-, and 6-legged mechanisms are evaluated in terms of the kinematic performance indices, workspace, singular configurations, and forward kinematic solutions. Results show that the optimum number of legs varies due to priorities in kinematic measures in different applications. The non-symmetric Wide-Open mechanism enjoys the largest workspace, while the well-known Gough–Stewart (3–3) platform retains the highest dexterity. Especially, the redundantly actuated 4-legged mechan
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Yu, Mi, Yong-Jun Piao, Seong-Hyun Kim, Dong-Wook Kim, and Nam-Gyun Kim. "Effects of tendon vibration during one-legged and two-legged stance in elderly individuals." International Journal of Precision Engineering and Manufacturing 11, no. 6 (2010): 969–77. http://dx.doi.org/10.1007/s12541-010-0117-x.

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Jung, Kyoung-sim, Jin-hwa Jung, and Tae-sung In. "The Effects of Cross-Legged Sitting on the Trunk and Pelvic Angles and Gluteal Pressure in People with and without Low Back Pain." International Journal of Environmental Research and Public Health 17, no. 13 (2020): 4621. http://dx.doi.org/10.3390/ijerph17134621.

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The purpose of this study was to investigate the effects of cross-legged sitting on the trunk flexion angle, pelvic obliquity, and gluteal pressure of subjects with and without low back pain (LBP). The study subjects were 30 LBP patients and 30 healthy individuals. They were instructed to sit on a chair, the height of which was adjustable, so that their knee and hip joints were bent at 90°. All subjects were asked to perform two sitting postures: erect sitting and cross-legged sitting. Trunk flexion angle and pelvic obliquity were measured using a three-dimensional motion-capture system, and g
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LOSOS, JONATHAN B., and BARRY SINERVO. "The Effects of Morphology and Perch Diameter on Sprint Performance of Anolis Lizards." Journal of Experimental Biology 145, no. 1 (1989): 23–30. http://dx.doi.org/10.1242/jeb.145.1.23.

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We investigated the mechanistic basis for the observed correlation between leg length and perch size among West Indian Anolis lizards by testing the hypothesis that species use those perches upon which they can move most effectively. We used four Anolis species which differed in leg length and perch use in nature. We measured maximum sprint speed on rods of several sizes. Longer-legged species ran faster on thick rods. The speed of all species declined on thinner rods, but long-legged species were affected to a greater extent in that all species ran at approximately the same speed on the small
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İŞLER, C. T., M. E. ALTUĞ, Z. YURTAL, and M. Z. Y. DEVECI. "Effects of diazepam, ketamine HCl and sevoflurane anesthesia on vital and recovery values of nine long legged buzzards (Buteo rufinus) upon wing amputation." Journal of the Hellenic Veterinary Medical Society 69, no. 3 (2018): 1071. http://dx.doi.org/10.12681/jhvms.18877.

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In this clinical study, effects of diazepam + ketamine HCl + sevoflurane anesthesia on vital functions and recovery duration and qualityofnine long legged buzzards were evaluated upon wing amputation. Operation was decided for long legged buzzards and heartand breathingrate, body temperature, and reflexes of long legged buzzards were evaluated before, during and after the anesthesia. Diazepam and ketamine HCl injection increased the heart rate whereas it was decreased by sevoflurane. Respiratory rate decreased upon sevoflurane application. Body temperature decreased during anesthesia. Recovery
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Kinugasa, Tetsuya, and Yasuhiro Sugimoto. "Dynamically and Biologically Inspired Legged Locomotion: A Review." Journal of Robotics and Mechatronics 29, no. 3 (2017): 456–70. http://dx.doi.org/10.20965/jrm.2017.p0456.

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[abstFig src='/00290003/01.jpg' width='300' text='Passive dynamic walking: RW03 and Jenkka III' ] Legged locomotion, such as walking, running, turning, and jumping depends strongly on the dynamics and the biological characteristics of the body involved. Gait patterns and energy efficiency, for instance, are known to be greatly affected, not only by travel speed and ground contact conditions but also by body structure such as joint stiffness and coordination, and foot sole shape. To understand legged locomotion principles, we must elucidate how the body’s dynamic and biological characteristics
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Miyachi, M., K. Yamamoto, K. Takahashi, et al. "EFFECTS OF ONE-LEGGED EXERCISE ON LEG ARTERIAL STIFFNESS." Medicine & Science in Sports & Exercise 34, no. 5 (2002): S132. http://dx.doi.org/10.1097/00005768-200205001-00737.

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Aoki, Osamu, Yoshitaka Otani, Shinichiro Morishita, and Kazuhisa Domen. "EFFECTS OF VIEWING DISTANCE AND HEAD FLEXION ON POSTURAL CONTROL DURING ONE AND TWO-LEGGED STANCE." International Journal of Physiotherapy and Research 3, no. 5 (2015): 1215–20. http://dx.doi.org/10.16965/ijpr.2015.179.

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Zhang, S. J., D. Howard, D. J. Sanger, and S. Miao. "Multi-legged walking machine body design." Robotica 15, no. 6 (1997): 593–98. http://dx.doi.org/10.1017/s0263574797000714.

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The effects of body geometry on walking machine performance have been investigated, and a body design procedure proposed. The relationships between static workspace, body-geometry and installed joint torques have been derived. A body design procedure that uses this data is then described, and two design examples discussed. The procedure results in a body geometry which minimises the installed joint torques, and hence the machine weight, for the desired workspace area.
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Dissertations / Theses on the topic "Legged effects"

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Johnston, Gail. "Interactive effects of pesticides in the hybrid red-legged partridge." Thesis, University of Reading, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.281420.

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Sayginer, Ege. "Modelling The Effects Of Half Circular Compliant Legs On The Kinematics And Dynamics Of A Legged Robot." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12612071/index.pdf.

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RHex is an autonomous hexapedal robot capable of locomotion on rough terrain. Up to now, most modelling and simulation efforts on RHex were based on the linear leg assumption. These models disregarded what might be seen as the most characteristic feature of the latest iterations of this robot: the half circular legs. This thesis focuses on developing a more realistic model for this specially shaped compliant leg and studying its effects on the kinematics and dynamics of the resulting platform. One important consequence of the half circular compliant leg is the resulting rolling motion. Due to
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Walls, Trinity. "Personality in the Brush-legged Wolf Spider:Behavioral Syndromes and their Effects on Mating Success in Schizocosa ocreata." University of Cincinnati / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1544101158248781.

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Kautz, Andrea R. "Local Management and Landscape Effects on the Predator Guild in Vegetable Crops, with a Focus on Long-legged Flies (Diptera: Dolichopodidae)." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1437474798.

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Arnal, Audrey. "Circulation d'agents pathogènes en populations naturelles : approches éco-épidémiologiques chez le Goéland leucophée (Larus michaellis)." Thesis, Montpellier 2, 2012. http://www.theses.fr/2012MON20139/document.

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L'émergence des zoonoses est à relier directement avec les perturbations générées par l'Homme sur son environnement naturel à plus ou moins grande échelle. Sur l'ensemble des zoonoses émergentes chez l'Homme, la majorité provient d'animaux sauvages. L'étude du rôle de la faune sauvage dans la circulation des agents pathogènes est donc cruciale en particulier quand les interfaces faune sauvage/Homme sont fortes. L'objectif de cette thèse a été de comprendre par des approches éco-épidémiologiques à large échelle, la circulation d'agents pathogènes dans les populations d'un oiseau sauvage en cont
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Heggøy, Oddvar. "Short-term effects of data loggers on behaviour and physiology of two species of seabirds: the black-legged kittiwake Rissa tridactyla and the common guillemot Uria aalge." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for biologi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-25266.

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New technology, such as loggers and transmitters, has the last three decades become an important part of the research on free-living animals. Loggers are very useful in seabird studies. Seabirds often travel considerable distances at sea where visual observation is difficult, and are frequently used as indicators of the state of marine ecosystems. The potential negative effects of devices on birds have received some attention, but few studies have investigated the physiological effects of instrument attachment.In the present study, effects of GPS-and TDR-loggers on black-legged kittiwakes Riss
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Massaro, Melanie. "Investigation of causes and effects of predation by herring (Larus argentatus) and great black-backed gulls (L. marinus) on black-legged kittiwakes (Rissa tridactyla) on Gull Island, Newfoundland." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0015/MQ55522.pdf.

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Smalås, Rune. "Effect of experimentally increased adult foraging effort on the offspring in black legged kittiwakes (Rissa tridactyla)." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for biologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-15407.

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The Black legged Kittiwake (<i>Rissa tridactyla</i>) is one of the more extensively studied seagull species, and much of their nesting behaviour and physiology concerning the breeding period has already been examined to a high degree. Its habitat choice is such that it has been able to cover much of the costal habitats on the northern hemisphere, from Spain in the south to Svalbard in the north. For this reason it encounters a high degree of variability when it comes to environmental challenges during its breeding season, leading to large fluctuations in inter-annual breeding succe
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Hipps, N. A. "The effect of a slant-legged subsoiler on soil physical conditions and the growth of cereals." Thesis, University of Leeds, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.354039.

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Cullors, Kasey P. "Gradations of Thrills, Kicks and Moonwalks: A Textual and Cultural Analysis of the Effects of Michael Jacskon, the Legend and “Thriller”, the Legendary." Bowling Green State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1305637508.

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Books on the topic "Legged effects"

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ill, Bowles Carol, ed. The two-legged creature: An Otoe story. Northland Pub., 1993.

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Carli, Massimo, ed. Materiali sulla qualità della normazione. Firenze University Press, 2007. http://dx.doi.org/10.36253/978-88-8453-578-8.

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La tematica della buona normazione sta fi nalmente uscendo, anche in Italia, dalle sedi tecniche degli addetti ai lavori. Anche una legge chiara, scritta bene, comprensibile può essere, nel merito, una pessima legge. Per questo si cominciano a introdurre nel procedimento legislativo, statale e regionale, obblighi di valutazione della fattibilità della futura legge sia preventivi sia "successivi" per verificare se gli effetti previsti si sono realizzati e, in caso negativo, predisporre gli opportuni rimedi. Il volume raccoglie sei saggi, divisi in due parti: nella prima si affrontano alcuni pro
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Oakley, Karen L. Aliphatic and polycyclic aromatic hydrocarbons in eggs, livers, and stomach contents of black-legged kittiwakes in Prince William Sound, Alaska, after the Exxon Valdez oil spill. U.S. Fish and Wildlife Service, 1996.

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Oakley, Karen L. Aliphatic and polycyclic aromatic hydrocarbons in eggs, livers, and stomach contents of black-legged kittiwakes in Prince William Sound, Alaska, after the Exxon Valdez oil spill. U.S. Fish and Wildlife Service, 1996.

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Oakley, Karen L. Aliphatic and polycyclic aromatic hydrocarbons in eggs, livers, and stomach contents of black-legged kittiwakes in Prince William Sound, Alaska, after the Exxon Valdez oil spill. U.S. Fish and Wildlife Service, 1996.

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Vaccinations and public concern in history: Legend, rumor, and risk perception. Routledge, 2011.

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Iversen, E. H., Maurice M. O'Moore, and Richard A. Pierce. The romance of Nikolai Rezanov and Concepción Argüello: A literary legend and its effect on California history. Limestone Press, 1998.

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1954-, Mount Jeffrey F., California Energy Commission. Public Interest Energy Research., and University of California, Davis. Center for Watershed Sciences., eds. Pulsed-flow effects on foothill yellow-legged frog (Rana boylii): Integration of empirical, experimental, and hydrodynamic modeling approaches : first-year progress report : PIER interim project report. California Energy Commission, 2008.

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Boehmer, Elleke. The Mind in Motion. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198794776.003.0002.

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Drawing on insights from relevance theory, the chapter explores how W.B. Yeats’s late poem ‘Long-legged Fly’ creates an exemplary occasion for reflecting first on cognition and then on the ways in which cognition might be made manifest in poetic language; in particular, here, in a dominant simile that repeats as a refrain through the poem. Processing the three stanzas’ different inferential, sensorimotor, and intertextual effects, we as readers at one and the same time contemplate in each case a body in thought, and we contemplate ourselves thinking. The poem in this sense repeatedly performs
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Sara, Compton, Western Ecological Research Center (Geological Survey), and Angeles National Forest (Calif.), eds. Post-fire treatment monitoring of critical habitat for the California red-legged frog (Rana aurora draytonii) and unarmored three-spined stickleback (Gasterosteus aculeatus williamsoni) in San Francisquito Canyon following the Copper Fire: Final report. U.S. Geological Survey, Western Ecological Research Center, 2003.

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Book chapters on the topic "Legged effects"

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Beletzky, V. V. "Nonlinear Effects in Dynamics of Controlled Two-legged Walking." In Nonlinear Dynamics in Engineering Systems. Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-83578-0_3.

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Cavagna, Giovanni. "Effect of Speed, Step Frequency and Age on the Bouncing Step." In Physiological Aspects of Legged Terrestrial Locomotion. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-49980-2_9.

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Bilal, Ahmed, Zaid Mohammad, and Abdul Baqi. "Effect of Dog-Legged Staircase on the Seismic Response of Hill Buildings." In Lecture Notes in Civil Engineering. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-4617-1_14.

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Fukuba, Yoshiyuki, Akira Miura, Naomi Yamamoto, Hideyuki Hiramoto, and Hironori Sato. "Effect of One-Legged Low-Intensity Exercise Training on Lower Limb Composition in Young Women." In Exercise for Preventing Common Diseases. Springer Japan, 1999. http://dx.doi.org/10.1007/978-4-431-68511-1_19.

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Lachica, M., and I. Fernández-Fígares. "Effect of invertebrates on growth performance and feeding behavior of red-legged partridge (Alectoris rufa) chicks." In Energy and protein metabolism and nutrition in sustainable animal production. Wageningen Academic Publishers, 2013. http://dx.doi.org/10.3920/978-90-8686-781-3_189.

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Alshryda, Sattar, and James Wright. "Legg-Calve-Perthes Disease. Part II: Prospective Multicenter Study of the Effect of Treatment on Outcome." In Classic Papers in Orthopaedics. Springer London, 2013. http://dx.doi.org/10.1007/978-1-4471-5451-8_146.

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West-Eberhard, Mary Jane. "Quantitative Shifts and Correlated Change." In Developmental Plasticity and Evolution. Oxford University Press, 2003. http://dx.doi.org/10.1093/oso/9780195122343.003.0022.

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Preceding chapters have discussed evolutionary transitions as changes in the expression of discrete, modular traits. This chapter discusses transitions that are due to shifts in the magnitude, rather than the time, place, or repetition, of trait expression. Especially, it considers examples where environmental extremes induce quantitative change in the expression of continuously variable plastic traits. Quantitative shifts can produce novel extremes, novel combinations of extremes, or simultaneously opposite shifts due to negative correlations between traits, as in trade-offs. As pointed out by Brien (1969; see also chapter 7), correlated adaptive shifts can produce major changes in which large steps are not lethal because the usual adaptive plasticity of the organism accommodates the kind of change that occurs when “a new type of organization is born”. The same developmental plasticity that is responsible for phenotypic accommodation and homeostatic stability (see chapter 3) can produce correlated change as well. Correlations among the environmental responses of plastic traits mean that several quantitative traits can change at once, if they respond simultaneously to the same mutation or environmental factor. The two-legged goat described in chapter 3 shows how the multidimensional plasticity of the phenotype can produce a strikingly novel form that, lacking intermediates, appears to be a qualitative change—a change in kind, not merely degree. The fact that the same plasticity-mediated changes would occur whether the cause of shortened front legs were due to a mutation or to an environmental effect early in development illustrates the interchangeability of genetic and environmental factors in inducing correlated change. Raff and Kaufman (1983, p. 202) called correlated effects due to developmental relationships among continuously variable traits “relational pleiotropy.” Positive relational pleiotropy can result when numerous positively correlated traits respond in unison to a single stimulus or condition, such as variation in size. Negative relational pleiotropy can give rise to trade-offs, or negative fitness effects among traits such that an increase in the magnitude of one means a decrease in the magnitude of one or more others.
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West-Eberhard, Mary Jane. "Deletion." In Developmental Plasticity and Evolution. Oxford University Press, 2003. http://dx.doi.org/10.1093/oso/9780195122343.003.0017.

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Deletion, or trait loss, may seem a step backward rather than a step toward something new. Goldschmidt (1940) emphasized the regressive aspect of deletion by calling it “rudimentation.” But trait deletions create novelties by subtraction, in at least four different ways. First, a complex trait lacking an element may immediately have an altered function. A worker honeybee, for example, is a mature brood-tending female minus the ability to lay eggs, and a queen is a solitary female minus the ability to care for the brood. These reciprocal, complementary deletions, reinforced by kinship, make the two kinds of female into mutually dependent collaborators. Second, the loss of a trait may have correlated developmental effects that force the remaining phenotypic elements into new configurations, as with the virtually deleted forelegs of the two-legged goat (see chapter 3). Third, a deletion, if it is repeatedly produced, makes the resultant phenotype subject to divergent evolution under selection, simply because it is different. Finally, deletion of a phenotypic subunit can release other, genetically and developmentally correlated traits from the evolutionary constraints represented by these correlations, freeing the remaining traits to evolve more rapidly and independently. Deletions can evolve gradually, by change in regulation to reduce the frequency of expression of a trait, as in loss of an alternative phenotype, or by change in form such that elements of the phenotype are gradually lost, as in flight reduction in insects beginning with loss of flight behavior, then wing musculature, then wings (Shaw, 1970; see figure 5.26). Classical gradualism refers to the latter type of change—gradual loss of elements of form— as suggested by the occurrence of mosaic intermediates (e.g., a flightless population that possesses wings). A deletion occurs every time an alternative phenotype evolves to fixation, which means that its former alternative is no longer expressed. Since this is a step in the evolution of many constitutive qualitative trait (see part III), regulatory deletions of alternative phenotypes must be common events. As with other kinds of phenotypic change, deletions occur at different levels of organization, from pieces of genes to elements of behavior and whole life stages of individual development.
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KOHUT, N. J., D. W. HALDANE, D. ZARROUK, and R. S. FEARING. "EFFECT OF INERTIAL TAIL ON YAW RATE OF 45 GRAM LEGGED ROBOT." In Adaptive Mobile Robotics. WORLD SCIENTIFIC, 2012. http://dx.doi.org/10.1142/9789814415958_0023.

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Trivellato, Francesca. "The Making of a Legend." In The Promise and Peril of Credit. Princeton University Press, 2019. http://dx.doi.org/10.23943/princeton/9780691178592.003.0003.

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This chapter discusses Étienne Cleirac's commentary on the first article of the Guidon de la mer (The Standard of the Sea). In brief, he says that the Jews expelled from France invented marine insurance policies and bills of exchange in order to salvage their assets when fleeing to “Lombardy,” that is, to northern and central Italy. From there, Italian refugees exported the newly invented financial instruments north of the Alps, where bankers and moneylenders were called “Lombards,” a name eventually given to a public square in Amsterdam. Cleirac's merging of these spaces has the effect of tracing a direct line between fourteenth-century Lombards and seventeenth-century Amsterdam and makes pawnbroking appear contiguous with the most sophisticated forms of financial credit developed during the sixteenth century. This chronological compression is crucial to Cleirac's rhetorical strategy of making medieval Jewish moneylenders, the object of scorn and prejudice, interchangeable with the international merchant-bankers of the seventeenth century.
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Conference papers on the topic "Legged effects"

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Scarfogliero, Umberto, Fei Li, Dajing Chen, Cesare Stefanini, Weiting Liu, and Paolo Dario. "Jumping Mini-Robot as a Model of Scale Effects on Legged Locomotion." In 2007 IEEE International Conference on Robotics and Biomimetics (ROBIO '07). IEEE, 2007. http://dx.doi.org/10.1109/robio.2007.4522274.

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Sanford, Sean, Mingxiao Liu, Thomas Selvaggi, and Raviraj Nataraj. "The Effects of Visual Feedback Complexity on Training the Two-Legged Squat Exercise." In MOCO '20: 7th International Conference on Movement and Computing. ACM, 2020. http://dx.doi.org/10.1145/3401956.3404243.

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SHIBUYA, KOJI, and KENJI MATSUHIRA. "EFFECTS OF NECK SWING MOTION ON THE BODY POSTURE OF A FOUR-LEGGED ROBOT." In Proceedings of the 16th International Conference on Climbing and Walking Robots and the Support Technologies for Mobile Machines. WORLD SCIENTIFIC, 2013. http://dx.doi.org/10.1142/9789814525534_0064.

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Cermelli, Christian A., and Dominique G. Roddier. "Experimental and Numerical Investigation of the Stabilizing Effects of a Water-Entrapment Plate on a Deepwater Minimal Floating Platform." In ASME 2005 24th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2005. http://dx.doi.org/10.1115/omae2005-67077.

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The stabilizing effects of a water-entrapment plate at the keel of a small three-legged semi-submersible platform are determined using laboratory experiments and time-domain simulations. Motion predictions were carried out in the time-domain using coupled-analysis between the vessel and its mooring, linear diffraction-radiation theory, and an empirical wave-viscous interaction model. Model tests were conducted at the U.C. Berkeley Ship Model Testing Facility to determine the validity of the numerical model.
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Shen, Zhuohua, Peter Larson, and Justin Seipel. "Comparison of Hip Torque and Radial Forcing Effects on Locomotion Stability and Energetics." In ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/detc2013-13516.

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Hip torque and radial forcing along the leg are two common actuation methods for legged robots. However, hip torque and radial forcing have not been compared as potential alternative strategies of actuation. The respective advantages and disadvantages of hip torque and radial forcing are not well known. In this paper, we compare hip torque and radial forcing actuation through the simulation of two models: a Rotary-forced Spring-Loaded Inverted Pendulum and a Radially Forced Spring-Loaded Inverted Pendulum. Both actuation methods can produce fully asymptotically stable locomotion. Interestingly
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Font, Josep Maria, and Jo´zsef Ko¨vecses. "Effects of Mass Distribution and Configuration on the Energetic Losses at Impacts of Bipedal Walking Systems." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-66684.

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Understanding the dynamics of human walking is a complex task due to the interaction of the musculoskeletal and the central nervous systems. Nevertheless, the use of simple models can provide useful insight into the mechanical aspects of bipedal locomotion. Such models exploit the observations that human walking significantly relies on passive dynamics and inverted pendulum-like behaviour. The mechanical analysis of walking involves the study of the finite motion single support phase and the impulsive motion of the impacts that occur at heel strike. Such impacts are dominant events because the
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Candan, Sinan Sahin, Uluc Saranli, and Yigit Yazicioglu. "Comparison of Parallel Elastic and Series Elastic Configurations of Vertical Hopping Spring Mass Model Controlled With Virtual Tuning of Damping." In ASME 2020 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/detc2020-22517.

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Abstract Spring Loaded Inverted Pendulum (SLIP) is a simple, descriptive and accurate model to study dynamic legged locomotion. Critical design decisions to realize SLIP based legged robots with high energy efficiency and control accuracy are actuation topology and controller. Recent studies converge on series elastic actuation (SEA) and parallel elastic actuation (PEA) regarding actuation whereas, a recently introduced control method, virtual tuning of damping (VTD) have proven to be superior for SEA over other control techniques. However, actuation topology is still under discussion and it i
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Rao, Nikhil, Zhuohua Shen, and Justin Seipel. "Comparing Legged Locomotion With a Sprung-Knee and Telescoping-Spring When Hip Torque is Applied." In ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/detc2013-13576.

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Legged locomotion has been a subject of study for many years. However, the role of the knee in whole-body dynamics of locomotion is not well understood, especially for non-conservative dynamics. Based upon a hip actuated Spring-Loaded Inverted Pendulum (Hip-actuated SLIP) model, we develop a more human-like, two-segment leg model with a pin-jointed springy knee, to see what effects a knee has in the context of an applied hip torque. Overall, we find that the governing equations for the two-segment (knee) version have a distinct structure when compared to the telescoping version of SLIP. The tw
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Lee, Chi-Wook, Ali Seireg, and Joseph Duffy. "Chaotic Behavior of a Two Mass Bouncing System." In ASME 1992 Design Technical Conferences. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/detc1992-0185.

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Abstract This study investigates the behavior of simple two mass bouncing systems which are released from a certain height. A nonlinearity exists in the discontinuity of the flight and the ground modes, although the behavior of the systems is linear in each mode. Such oscillators provide models for mechanical systems such as legged systems for hopping robots. The phase plane technique and the power spectrum analysis are used to investigate the stability of bouncing systems and the chaos that may occur. The effects of the spring constants and the damping coefficient at the ground contact on the
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Ryou, Jeong Hoon, and Kenn Oldham. "Simulation Study and Experimental Testing of Foot-Terrain Dynamics in Piezoelectric Micro-Robots." In ASME 2010 Dynamic Systems and Control Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/dscc2010-4138.

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In micro-scale environment, contact forces such as adhesion and electrostatic forces, which are generally assumed to be negligible in general macro scale devices, affect the motions of MEMS devices significantly. This paper is an initial exploration of how such forces might influence the locomotion of multi-legged micro-robots, by matching the analytical dynamic simulations to the result from experiments on micro devices including a simple micro-cantilever beam and a bulk piezoelectrically-actuated micro-robotic prototype. Results imply that foot-terrain impacts focusing on primary effects rel
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