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- Herder, J.L. (author) contribution to periodical 2017
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Delissen, A.A.T.M. (author), Radaelli, G. (author), Herder, J.L. (author)A zero free length (ZFL) spring is a spring with special properties, which is commonly used in static balancing. Existing methods to create ZFL springs all have their specific drawbacks, which rises to the need of a new method to create such a spring. A method is proposed to design planar ZFL springs with specified stiffness (250–750 N/m)...journal article 2017
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Radaelli, G. (author), Herder, J.L. (author)The research on compliant shell mechanisms is a new and promising expansion of the well established compliant mechanisms research area. Benefits of compliant shell mechanisms include being spatial and slender, having organic shapes and their high tailorability of the load-displacement response. This work focusses on the design of a shell with...journal article 2017
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Bos, R.A. (author), Plettenburg, D.H. (author), Herder, J.L. (author)This study does not describe a success-story. Instead, it describes an exploratory process and the lessons learned while designing a compliant mechanism for a dynamic hand orthosis. Tools from engineering optimization and rapid prototyping techniques were used, with the goal to design a mechanism to compensate for hypertonic or contracted finger...conference paper 2017
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Radaelli, G. (author), Buskermolen, R. (author), Barents, R (author), Herder, J.L. (author)This paper presents a method for the design of a statically balanced inverted pendulum. The non-linear moment-rotation characteristic of the pendulum's weight is approximated by a piecewise linear characteristic. Each transition is realized by engaging or disengaging one or more torsion bars, by means of mechanical stops. The whole set of...journal article 2017
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Bos, R.A. (author), Haarman, CJW (author), Stortelder, T. (author), Nizamis, K (author), Herder, J.L. (author), Stienen, AHA (author), Plettenburg, D.H. (author)The development of dynamic hand orthoses is a fast-growing field of research and has resulted in many different devices. A large and diverse solution space is formed by the various mechatronic components which are used in these devices. They are the result of making complex design choices within the constraints imposed by the application, the...journal article 2016
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Radaelli, G. (author), Herder, J.L. (author)A new monolithic fully compliant gravity balancer is designed with help of a design approach based on shape optimization. The balancer consists of one single clamped-clamped complex-shaped beam on which a weight is attached. The beam is modeled as a planar isogeometric Bernoulli beam. The goal function of the optimization consists of an...journal article 2016
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Radaelli, G. (author), Herder, J.L. (author)This paper presents the shape optimization of a compliant beam for prescribed load-displacements response. The analysis of the design is based on the isogeometric analysis framework for an enhanced fidelity between designed and analysed shape. The sensitivities used for an improved optimization procedure are derived analytically, including...journal article 2016
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de Laat, M.L.C. (author), Perez Garza, H.H. (author), Herder, J.L. (author), Ghatkesar, M.K. (author)In situ stiffness adjustment in microelectromechanical systems is used in a variety of applications such as radio-frequency mechanical filters, energy harvesters, atomic force microscopy, vibration detection sensors. In this review we provide designers with an overview of existing stiffness adjustment methods, their working principle, and...journal article 2016
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Kooren, P.N. (author), Dunning, A.G. (author), Janssen, M.M.H.P. (author), Lobo-Prat, J. (author), Koopman, B.F.J.M. (author), Paalman, M.I. (author), de Groot, I.J.M. (author), Herder, J.L. (author)Background Persons suffering from progressive muscular weakness, like those with Duchenne muscular dystrophy (DMD), gradually lose the ability to stand, walk and to use their arms. This hinders them from performing daily activities, social participation and being independent. Wheelchairs are used to overcome the loss of walking. However, there...journal article 2015
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Lambert, P. (author), Herder, J.L. (author)Conventional parallel robots are formed by several independent serial chains, connecting in-parallel a single rigid platform, or end-effector, to the base. The novel concept behind a parallel robot with configurable platform is that the rigid end-effector is replaced by a closed-loop chain, which can provide additional grasping capability or...journal article 2015
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Krijnen, Bram (author), Swinkels, Koen (author), Brouwer, Dannis M. (author), Abelmann, Leon (author), Herder, J.L. (author)A 3-DoF micro-electromechanical (MEMS) stage has been designed with an innovative integrated feedback system based on thermal sensors. The stage is integrated in the device layer of a silicon-oninsulator-wafer, which means that no assembly is required and the stage can be fabricated using only a single mask. The range of motion is over 160 μm in...journal article 2015
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Bruckmann, Tobias (author), Merlet, Jean-Pierre (author), Spanjer, Stefan (author), Herder, J.L. (author)There’s one mechanical element that most people use every day and have been doing so for over 10,000 years. It’s cheap, easy to handle and, thanks to ongoing research, it has become even stronger and more lightweight over the millennia. This element is the cable, present versions of which have superb properties. For nearly twenty years, a...journal article 2015
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Herder, J.L. (author)Recently, I attended two conferences in the field of mechanisms and robotics. Their nature was virtually opposite. The first one was the French National Robotics Research Days, held in beautiful, remotely located Baie de Somme. This meeting was all in French, except my talk that opened the first day. Luckily I had picked up some technical French...journal article 2015
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Bakker, D.L. (author), Matsuura, D. (author), Takeda, Y (author), Herder, J.L. (author)Continuum manipulators are high degree of freedom structures that can use their increased degrees of freedom to navigate through an environment with obstacles. This type of manipulator is underactuated, which make them promising for adapting to their environments. However, current research is mainly focused on accurate positioning and obstacle...conference paper 2015
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Herder, J.L. (author), Lustig, M.P. (author), Dunning, A.G. (author)A statically balanced system is in equilibrium in every pose. In classical balancing solutions for serial linkages, each DOF is balanced by an independent element. Disadvantages are increased mass and inertia for counter-mass, and auxiliary links for spring solutions. Recent literature presents a method for balancing serial linkages without...conference paper 2015
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Radaelli, G. (author), Herder, J.L. (author)A new monolithic fully compliant gravity balancer is designed with help of a design approach based on shape optimization. The balancer consists of one single complex-shaped beam on which the weight is attached. The beam is modeled as a planar isogeometric Bernoulli beam. The goal function of the optimization consists of an energy based...conference paper 2015
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Lobo-Prat, J. (author), Kooren, P.N. (author), Stienen, A.H.A. (author), Herder, J.L. (author), Koopman, B.F.J.M. (author), Veltink, P.H. (author)Active movement-assistive devices aim to increase the quality of life for patients with neuromusculoskeletal disorders. This technology requires interaction between the user and the device through a control interface that detects the user’s movement intention. Researchers have explored a wide variety of invasive and non-invasive control...journal article 2014
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- Herder, J.L. (author) contribution to periodical 2014
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Herder, J.L. (author), Tolou, N. (author)Energy harvester comprising a mass (2) that is subjectable to environmental forces for bringing it into the status of a moving mass, and means (5) linked to the mass (2) for converting and storing of energy embodied in the moving mass, which means (5) are arranged for subsequent release of said energy, wherein the mass (2) is part of a compliant...patent 2013