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Optimal Selection of motor and gearhead in mechatronic applications
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).ORCID iD: 0000-0002-7550-3134
2006 (English)In: Mechatronics (Oxford), ISSN 0957-4158, E-ISSN 1873-4006, Vol. 16, no 1, 63-72 p.Article in journal (Refereed) Published
Abstract [en]

A method for the selection of motor and gearhead in mechatronic applications is proposed. The method is applicable to any kind of load and helps to find the optimal motor gearhead combination with respect to output torque, peak power, mass/size and/or cost. The input to the method is the load cycle and component data on candidate motors and gearheads. Output is a set of graphs of all motor/gear ratio combinations that can drive the given load. From these graphs it is easy to read out the peak power, motor torque and energy efficiency for all feasible motor/gear ratio combinations.

Place, publisher, year, edition, pages
2006. Vol. 16, no 1, 63-72 p.
Keyword [en]
Design methodology, Gears, Motor drives, Servomotors, Servosystems
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-5026DOI: 10.1016/j.mechatronics.2005.08.001ISI: 000234035300007Scopus ID: 2-s2.0-28044450848OAI: oai:DiVA.org:kth-5026DiVA: diva2:7611
Note
QC 20100927. Uppdaterad från Submitted till Published (20100927).Available from: 2005-04-15 Created: 2005-04-15 Last updated: 2017-12-05Bibliographically approved
In thesis
1. On design methods for mechatronics: servo motor and gearhead
Open this publication in new window or tab >>On design methods for mechatronics: servo motor and gearhead
2005 (English)Licentiate thesis, comprehensive summary (Other scientific)
Abstract [en]

The number of electric powered sub-systems in road-vehicles is increasing fast. This development is primarily driven by the new and improved functionality that can be implemented with electro-mechanical sub-systems, but it is also necessary for the transition to electric and hybrid-electric drive trains.

An electromechanical sub-system can be implemented as a physically integrated mechatronic module: controller, power electronics, electric motor, transmission and sensors, all integrated into one component. A mechatronic module, spans, as all mechatronic systems, over several closely coupled engineering disciplines: mechanics, electronics, electro-mechanics, control theory and computer science. In order to design and optimize a mechatronic system it is therefore desirable to design the system within all domains concurrently. Optimizing each domain or component separately will not result in the optimal system design. Furthermore, the very large production volumes of automotive sub-systems increase the freedom in the mechatronics design process. Instead of being limited to the selection from off-the shelf components, application specific components may be designed.

The research presented in this thesis aims at development of an integrated design and optimization methodology for mechatronic modules. The target of the methodology is the conceptual design phase, where the number of design parameters is relatively small. So far, the focus has been on design methods for the electric motor and gearhead, two of the most important components in an actuation module. The thesis presents two methods for design and optimization of motor and gearhead in mechatronic applications. One discrete method, intended for the selection of off-the-shelf components, and one method mainly intended for high volume applications where new application specific components may be designed. Both methods can handle any type of load combination, which is important in mechatronic systems, where the load seldom can be classified as pure inertial or constant speed.

Furthermore, design models relating spur gear weight, size and inertia to output torque and gear ratio are presented. It is shown that a gearhead has significantly lower inertia and weight than a motor. The results indicate that it almost always is favorable from a weight and size perspective to use a gearhead. A direct drive configuration may only be lighter for very high speed applications. The main contribution of this thesis is however the motor/gear ratio sizing methods that can be applied to any electromechanical actuation system that requires rotational motion.

Place, publisher, year, edition, pages
Stockholm: KTH, 2005. ix, 13 p.
Series
Trita-MMK, ISSN 1400-1179 ; 2005:02
Keyword
Applied mechanics, mechatronics design methodology, servo systems, electric motors, gears, auxiliary systems, Teknisk mekanik
National Category
Mechanical Engineering
Identifiers
urn:nbn:se:kth:diva-167 (URN)
Presentation
2005-02-01, B442, KTH, Brinellvägen 83, Stockholm, 10:00
Supervisors
Note
QC 20101220Available from: 2005-04-15 Created: 2005-04-15 Last updated: 2010-12-20Bibliographically approved

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Wikander, Jan

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