Otto Bock Healthcare Products Gmbh | Date: 2015-01-29
The disclosure relates to a method for operating an electric motor. A first method is applied at a rotational speed below a predetermined limit value and a second method is applied at a rotational speed above the predetermined limit value. The first method is a method for operating an electric motor that has a stator and a rotor, wherein the stator or the rotor has at least three segments each having at least one electromagnetic element. The first method comprises the following steps: a) simultaneously de-energizing all electromagnetic elements of all segments while the rotor rotates, b) measuring an electrical quantity induced in the electromagnetic elements, in particular an induced voltage, for each segment, and c) determining a rotor position of the rotor in relation to the stator from the measured electrical quantities. The second method is a method for operating an electric motor that has a stator and a rotor, wherein the stator or the rotor has at least three segments each having at least one electromagnetic element. An electrical current can be supplied to the electromagnetic elements such that a segment magnetic field is formed, by means of which field a segment torque is applied to the rotor. The intensity of the electrical current depends on a segment position of the rotor in relation to the segment. The second method comprises the following steps: A) determining an expected time at which the segment torque of a zero-crossing segment, which is one of the at least three segments, is expected to be equal to zero, B) de-energizing all of the electromagnetic elements of the zero-crossing segment for a first measurement time interval and for a second measurement time interval, wherein the first measurement time interval lies before the expected time and the second measurement time interval lies after the expected time, C) measuring an electrical quantity induced in the electromagnetic elements of the zero-crossing segment, in particular an induced voltage, within the first measurement time interval and within the second measurement time interval, D) determining an actual time at which the segment torque of the zero-crossing segment was equal to zero from the measured electrical quantities.
Agency: European Commission | Branch: H2020 | Program: RIA | Phase: ICT-24-2015 | Award Amount: 3.99M | Year: 2016
Low-back pain is the leading cause of worker absenteeism after the common cold, accounting for 15% of sick leaves and hundreds of millions of lost work days annually [Walking 2.0, Nature, 2015]. Most of todays robotic assistive devices are in forms of exoskeletons that augment the motion of legs and arms and neglect the role of spinal column in transferring load from the upper body and arms to the legs. In SPEXOR we will fill this gap and design a novel and revolutionary spinal exoskeleton to prevent low-back pain in able bodied workers and to support workers with low-back pain in vocational rehabilitation. The concept to realize the objectives of SPEXOR is driven by several interdisciplinary ideas that push current understanding of low-back pain intervention through several innovative research and technological stages. First, robot-centred requirements for low-back pain prevention are determined and a musculoskeletal stress monitoring system is developed to unobtrusively measure the associated key variables. Then, optimal design parameters and sensorimotor strategies are provided with respect to the robot-centred requirements and their associated key variables. Based on these aspects, a spinal exoskeleton mechanism and its actuation is developed and adaptive control architecture is employed. Such research and development cycle is enclosed by multi-phase end-user evaluation, usability and satisfaction studies. The project builds upon the partners extensive experience with work ergonomics, modelling and optimization of human movement, design, control and evaluation of exoskeletons. Several beyond-the-state-of-art scientific approaches and technologies will be employed through a colourful mixture of research, industrial, SME and end-user partners of the consortium. Ultimately, the results of SPEXOR will have a significant impact well beyond the current scientific understanding and technological capabilities of assistive robots used in daily life and health care.
Agency: European Commission | Branch: H2020 | Program: IA | Phase: ICT-23-2014 | Award Amount: 3.75M | Year: 2015
The aim of the RETRAINER proposal is to tune and validate advanced, robot-based technologies to facilitate recovery of arm and hand function in stroke survivors and to verify extensively the use of the system by end-users. RETRAINER will allow the users to use their own arm and hand as much and as soon as possible after the trauma so to achieve the best outcomes in rehabilitation. A continuous iterative process between the technology development and the testing feedback will drive the whole project. RETRAINER will implement a full technology transfer from the results of a previous FP7 project, MUNDUS, aimed at setting up a similar assistive device for severely disabled people in daily life activities. RETRAINER will make available two systems that could be used either combined or stand-alone. RETRAINER S1 will provide the end-user with a robot that does not completely take over the users tasks and substitute the functionality of the body, but specifically supports the user only whenever he/she really needs support. Residual functionality is trained and improved on rather than replaced by the robotic device. Arm movements will be supported by the combined action of a passive exoskeleton for weight relief and Neuromuscular Electrical stimulation (NMES) delivered to several arm muscles in a controlled manner. RETRAINER S2 will exploit a wearable NMES system with multiple arrays of electrodes for hand rehabilitation facilitating the grasping function. Both systems will benefit from use of interactive objects, i.e. daily-life objects able to supply information about themselves to drive usage. Within RETRAINER the same principle and module will be exploited to drive rehabilitation exercises and to monitor daily life. The systems will undergo a thorough randomized control clinical trial with end users to assess their efficacy in rehabilitation. Certification and qualification of the system will be pursued, given the adequate quality of experimental results.
Agency: European Commission | Branch: H2020 | Program: IA | Phase: ICT-24-2015 | Award Amount: 3.84M | Year: 2016
INPUT will strive to make the control of complex upper limb prostheses simple, natural and to be used on a daily basis by amputees effortlessly after donning -don and play. Currently, the most advanced routine prosthetic control on the market is more than 4 decades old, outdated and constitutes the bottle neck to introducing highly dexterous prostheses. The project builds on achievements reached in the EU FP7 IAPP projects AMYO (Grant No. 251555, 2011-2014) and MYOSENS (Grant No. 286208, 2012-2015), which were targeting improved signal acquisition and signal processing for advanced upper limb prosthetic control. The projects were very successful and received high recognitions national and international recognitions. In INPUT, the main goal will be to transfer the obtained results from laboratory settings further towards a clinically and commercially viable medical product. The enabling concepts on which INPUT builds upon are: - Reliable, easy to apply, cost-effective signal acquisition - Reliable, powerful real-time signal processing - Quantifying true patient benefit - Optimized end-user training - Iterative clinical tests throughout the entire project In order to keep a realistic focus, the project will rely on well-known principles of advanced prosthesis control. Existing upper limb prosthetic hardware will be reused to minimize development time and costs. Improved electronics, algorithms and training will be the main innovations. INPUT will build on frequent end-user testing with amputees throughout the entire project. These will ensure targeted prototype development and market viability for advancing the technology from laboratory conditions to a high technology readiness level (TRL) of 8. The project relies on the cooperation between academic research, industry and clinical partners - thus representing the entire value chain of cutting edge upper limb prosthetics. This will ensure the development of stable, wearable and practical prototypes.
Otto Bock Healthcare Products Gmbh | Date: 2012-06-07
The invention relates to a method for producing populated or unpopulated circuit boards or individual circuits as individual panels (2) from a complete panel (1) having a circuit board base material (4), wherein the particular individual panel (2) is removed from the complete panel (1) using a laser, wherein the individual panel is fastened to the complete panel (1) by means of metal connections (3) before the individual panel (2) is removed, the circuit board base material (4) is removed except for the metal connections (3), and the individual panels (2) are separated from, in particular pressed out of, the complete panel (1) after the circuit board base material (4) has been removed.
Otto Bock Healthcare Products Gmbh | Date: 2014-07-07
A method for controlling an artificial orthotic or prosthetic knee joint, on which a lower-leg component is arranged and with which a resistance device is associated, the bending resistance (R) of which resistance device is changed in dependence on sensor data that are determined by means of at least one sensor during the use of the orthotic or prosthetic knee joint, wherein a linear acceleration (a_(F)) of the lower-leg component is determined, the determined linear acceleration (a_(F)) is compared with at least one threshold value, and, if a threshold value of the linear acceleration (a_(F)) of the lower-leg component is reached, the bending resistance (R) is changed.
Otto Bock Healthcare Products Gmbh | Date: 2014-09-30
The invention relates to a device and method for controlling an artificial orthotic or prosthetic joint of a lower extremity, comprising a resistance unit with which at least one actuator is associated, via which the bending and/or stretching resistance is varied depending on sensor data. During the use of the joint, status information is provided via sensors. According to the invention, the resistance is increased in the standing phase or while standing from a starting value depending on the ground reaction force up to a locking point of the joint.
Otto Bock Healthcare Products Gmbh | Date: 2015-01-08
An ankle brace for a prosthetic device includes a prosthetic foot and a lower leg piece. The ankle brace may bridge a gap between the prosthetic foot and the lower leg piece. The ankle brace may include a main member which is made of a flexible material and includes a cavity for accommodating the prosthetic device. At least one reinforcement element may be arranged on the main member which may increase the inherent stability of the ankle brace.
Otto Bock Healthcare Products Gmbh | Date: 2015-10-20
The application relates to an orthopedic device comprising a joint and to a method for controlling an orthopedic device, which has an upper part and a lower part supported pivotally thereon, wherein upper connecting means for fixation onto a limb are disposed on the upper part, and a locking device, which prevents a bending motion of the upper part relative to the lower part, wherein the locking device is configured such that it can be actively actuated by the user of the orthopedic device, wherein a control device is associated with the locking device, the control device being attached to the device with at least one sensor and automatically unlocking or locking the locking device as a function of the sensor signal.
Otto Bock Healthcare Products Gmbh | Date: 2014-04-29
An artificial finger for prosthetics and gripping technology, with a base, a first finger member mounted on the base in articulated manner, at least one secondary member mounted on the first finger member in articulated manner, and a drive for adjusting the secondary member relative to the first finger member and the first finger member relative to the base. At least one reset element is provided for resetting the first finger member and the secondary member, and the first finger member is acted upon with a resetting force which differs from the secondary member.