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GPC Y ASOCIADOS S.A.

Veléz Sarsfield 201640 Martinez

Buenos Aires

Tel.: +54 (9) 11 5993 8719

info@gpcasoc.com.ar

https://gpcasoc.com.ar/

Horne Technologies cc

PO Box 536

Betty's Bay, 7141

Tel.: +27 (0)76 563 2084

info@hornet.cc

www.hornetechnologies.co.za

Building of FAULHABER MINIMOTOR SA, Croglio, Switzerland

FAULHABER MINIMOTOR SA

Zona Artigianale 8, Madonna del Piano

6980 Croglio

Tel.: +41 (0)91 611 31 00

info@faulhaber.ch

Building of FAULHABER MICROMO LLC, Wien, Austria

FAULHABER MICROMO LLC

14881 Evergreen Avenue

Clearwater, FL 33762-3008

Tel.: +1 (727) 572 0131

marketing@micromo.com

www.faulhaberUSA.com

NRC Engineering & Precision Drives Co., Ltd.

17F., No. 890, Jingguo Rd., Luzhu Dist.

Taoyuan City 33858, Taiwan, R.O.C.

Tel.: +886 (0) 3-316-1838

info@nrc.com.tw

www.nrc-precidrives.com

EDEL Teknoloji Sistemleri Sanayi ve Ticaret Ltd.Şti

Folkart TowersAdalet Mah.Manas Blv. No:47B/2809

35530 Bayraklı/İzmir

Tel.: + 90 232 215 08 91

info@edelteknoloji.com

www.edelteknoloji.com

Building of FAULHABER Asia Pacific Pte Ltd., Singapore

FAULHABER Asia Pacific Pte Ltd.

Blk 67 Ubi Road 1, #06-07 Oxley Bizhub

Singapore 408730

Tel.: +65 6562 8270

info@faulhaber.com.sg

Compotech Provider AP

Gustavslundsvägen 145, 4 tr

167 51 Bromma

Tel.: +46 (0) 8 441 58 00

info@compotech.se

www.compotech.se

MICROPRIVOD Ltd.

56 (bldg. 32), Shosse Enthusiastov

111123 Moscow

Tel.: +7 495 2214 052

info@microprivod.ru

www.microprivod.ru

Building of FAULHABER Polska sp. z o.o., Poznan, Poland

FAULHABER Polska sp. z o.o.

Ul. Górki 7

60-204 Poznan

Tel.: +48 61 278 72 53

info@faulhaber.pl

FAULHABER Malaysia Sdn Bhd

1A-2-01 & 02 · One Precinct · Lengkok Mayang Pasir

11950 Bayan Baru · Penang · Malaysia

Tel.: +60 4 619 2570

info@faulhaber.my

Swiss Amiet Co., Ltd.

W-903, SK V1 Center, 11 Dangsan-ro 41-g

Yeongdeungpo-gu,07217, Seoul

Tel.: +82 (0) 2 783 4774

info@swissamiet.com

www.swissamiet.com

Shinkoh Electronics Co., Ltd.

Tokyo Sales Office, Motor Sales Division8F, REID-C OMORI building, 6-20-8

Minami-oi, Shinagawa-ku, Tokyo 140-0013

Tel.: +81 (0) 3 6404 1003

motor-info@shinkoh-elecs.co.jp

www.shinkoh-faulhaber.jp

Building of FAULHABER Italia S.r.l., Lomazzo, Italy

FAULHABER Italia S.r.l.

Via Cavour 2

22074 Lomazzo CO

Tel.: +39 0236714708

info@faulhaber-italia.it

Inteltek Automation JV

S.No. 100/5, Ambegaon

Pune - 411046

Tel.: +91 (0) 20 39392150

info@inteltekindia.com

www.inteltekindia.com

Lewenstein Technologies Ltd.

1 Ha'arava St. Givat Shmuel

5400804 Israel

Tel.: +972 3 9780 800

info@l-tech.co.il

www.l-tech.co.il

Electro Mechanical Systems Ltd.

Eros House, Calleva Industrial Park, Aldermaston

Reading, RG7 8LN

Tel.: +44 (0) 118 9817 391

info@ems-ltd.com

www.ems-limited.co.uk

Building of FAULHABER France SAS, Montigny-le-Bretonneux, France

FAULHABER France SAS

Parc d’activités du Pas du Lac2, Rue Michaël Faraday

78180 Montigny-le-Bretonneux

Tel.: +33 (0) 1 30 80 45 00

info@faulhaber-france.fr

www.faulhaber.com

ELMEQ Motor

Passeig Ferrocarrils Catalans 178

Cornellà de Llobregat 08940 (Barcelona)

Tel.: +34 93 422 70 33

marketing@elmeq.es

www.elmeq.es

MOVETEC OY

Suokalliontie 9

01740 Vantaa

Tel.: +358 (0) 9 5259 230

info@movetec.fi

www.movetec.fi

Routech s.r.o.

Dr. Milady Horákové 185/66

460 06 Liberec

Tel.: +420 489 202 971

info@routech.cz

www.routech.cz

Compower ApS

Marielundvej 29

2730 Herlev

Tel.: +45 (0) 44 92 66 20

info@compower.dk

www.compower.dk

Marte Científica e Instrumentação Industrial Ltda

Av Fco Andrade Ribeiro 430

37540-000 Santa Rita do Sapucai, MG

Tel.: +55 (11) 3411 4500

motores@marte.com.br

www.marte.com.br

Building of FAULHABER Drive System Technology (Taicang) Co., Ltd.,Taicang, China

FAULHABER Drive System Technology (Taicang) Co., Ltd.

Eastern Block, Incubator Building, No. 6 Beijing Road West

Taicang 215400, Jiangsu Province

Tel.: +86 (0) 512 5337 2626

info@faulhaber.cn

Building of FAULHABER Benelux B.V., Eindhoven, Netherlands

FAULHABER Benelux B.V.

High Tech Campus 9

5656 AE Eindhoven

Tel.: +31 (0) 40 85155-40

info@faulhaber.nl

Building of FAULHABER Austria GmbH, Wien, Austria

FAULHABER Austria GmbH

Modecenterstraße 22/C89

1030 Wien

Tel.: +43 1 7963149-0

info@faulhaber-austria.at

ERNTEC Pty. Ltd.

15 Koornang Road

Scoresby, VIC 3179

Tel.: +61 3 9756 4000

Fax: +61 3 9753 4000

sales@erntec.net

www.erntec.net

Building of Dr. Fritz Faulhaber GmbH & Co. KG, Schönaich, Germany

Headquarter

DR. FRITZ FAULHABER GMBH & CO. KG

Faulhaberstraße 1

71101 Schönaich

Tel.: +49 7031 638 0

Fax: +49 7031 638 100

info@faulhaber.de

www.faulhaber.com

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FAULHABER is currently not represented in the selected country.

Please contact us with your request at

Info@faulhaber.com

Jan-Christopher Mohr

Area Sales Manager

Tel.: +49 (7031) 638 158

jan-christopher.mohr@faulhaber.de

Michael Schütte

Area Sales Manager

Tel.: +49 (7031) 638 456

michael.schuette@faulhaber.de

Daniel Brönnimann

Area Sales Manager

Tel.: +41 (0) 79 570 0814

daniel.broennimann@faulhaber.ch

Rolf Leitner

Regional Sales Manager

Tel.: +41 (0) 79 422 3348

rolf.leitner@faulhaber.ch

Rafael Steinemann

Area Sales Manager

Tel.: +41 (0) 79 932 1645

rafael.steinemann@faulhaber.ch

DC-Motors in High-tech solutions for controlled prosthetic leg

A prosthesis is always a complex medical device which needs to be adapted to suit the individual. Technical components, however, can only be manufactured economically on a large scale. It was thus clear to prosthesis specialist Otto Bock from Vienna that a new, advanced prosthesis would need both to be suitable for use on a global scale and to offer top perform­ance under all possible conditions. His solution was to develop a so-called active prosthesis, whose success is based on the reliable and smooth interaction of mechanics, electronics and the user. To achieve this, the prosthesis specialist called in the micromotor experts from Faulhaber. Faulhaber's many years of experience with micromotors translated into a reliable, custom made motor solution for the high-tech Bock prostheses.

DC-Motors in High-tech solutions for controlled prosthetic leg
DC-Motors in High-tech solutions for controlled prosthetic leg

Following nature's lead

After leaving the factory, each prosthesis is fine tuned by the local orthopaedic specialist to suit the individual user. This is now standard practice with high-quality prostheses. What's special about this device, however, is that it uses its electromechanical systems to adapt to the individual's walking style and create a truly natural feeling for the user. Walking is not just a matter of putting one foot in front of the other. Therefore, simply “improving” on a wooden leg by adding a hinge to act as the knee is not an option. Nature uses tendons and muscles to provide damping and adapt limb movement with each individual step. Hence, people are able to make optimal use of their weight and force – whatever the con­ditions and depending on whether they are walking, running, cycling or standing. These processes all occur unconsciously and are often pure reflexes, meaning that they are extremely rapid.

Finding a way to simulate this natural damping requires great attention to be paid to the mechanics and electronics. Thanks to modern high-power microprocessors, miniature precision sensors and micromechanical motors, the technol­ogy now exists to achieve very impressive results. Compact prosthetic technology allows the user to walk slowly or fast, run, climb slopes or cycle – without needing to pay much special attention to what the limb is doing. In addition, the fact that the knee joint can react immediately to changes in speed or surface conditions improves safety considerably. Even in the case of a stumble, the real-time electronics will reliably prevent the prosthesis from buckling. Over the long term, the ability of the prosthesis to react intelligently safeguards the health of the user, avoiding undue wear and tear on the other joints or problems arising from poor posture and thus overstraining of the healthy leg.

DC-Motors in High-tech solutions for controlled prosthetic leg
DC-Motors in High-tech solutions for controlled prosthetic leg

A practical solution

Natural movement can only be achieved by the prosthesis reacting in a highly accurate and subtle way to the changes that occur with every step. In order to ensure that this occurs, highly sensitive sensors provide reports on the current situation and stresses 50 times per second. A knee angle sensor provides information used for dynamic control, whilst load sensors in the lower leg measure the pressures at the heel and front part of the foot. A high-power processor then analyses these results and passes on appropriate instructions to the damping mechanism. Hydraulic damping has proved to be of particular value. This allows the appropriate damping values to be implemented quickly and accurately. Prosthesis specialists make use of proven technology for the interface between the electronics and the damping mechanism: easy to control miniature DC motors. These micromotors, equipped with precious metal brushes, offer high per­formance in combination with a slimline design. The high efficiency of their motors means that prostheses can work without needing recharging for periods of up to two days, even with the limited capacities of lithium batteries. In the current example, the high-performance 10 mm motors ­function via friction gears in a planetary set. This serves to adjust the actual damping valve. With each step, the damp­ing is adjusted from its maximum level to almost zero and then back again.

Durability reigns supreme

All components need to be able to stand up to years of continuous use. This is no problem for the precious metal DC motors deployed within this area. Use of the prostheses around the globe places considerable demands on the technol­ogy, which must be able to cope with temperatures ranging from –15 °C to +65 °C. It must also be able to function without problems in all climates, from dry to wet, and withstand salty air or desert sand. With this in mind, all relevant components are sealed, with some being additionally housed within an extra casing.

Despite the use of robust and sealed components, as with all medical devices provision must be made for the possibility of the failure of all and any compo­nents, for example an empty battery. In such a case, the prosthesis will automatically provide maximum damping, in effect functioning as a wooden leg and thus providing the maximum possible level of safety. The wearer is thus always able to continue walking, albeit at a lower level of comfort. All levels of damping between virtually zero and the highest level can be individually set by a certified orthopaedic technician, using the C-Soft software. The user is also able to choose between two settings, for example one optimised for walking and one for cycling. The former would use active stance phase damping to allow easier standing and walking, whilst this would be switched off when cycling. The prosthesis can also be set for inline skating, cross-country skiing or many other activities.

The combination of modern electronics with robust, high-performance micro­motors provides an enormous improvement to the comfort of those using prostheses. Dynamic motors, real-time electronics and high resolution sensors mean that it is now possible to fit all the components required for natural movement into the limited space provided by a prosthesis.

DC-Motors in High-tech solutions for controlled prosthetic leg
DC-Motors in High-tech solutions for controlled prosthetic leg
video
DC-Motors
No cogging
Smooth position and speed control
High efficiency
Low Noise
High Torque
Low Weight
Very low rotor inertia
Dynamic start-stop operation
Details

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