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HOME : ABOUT ARNOLD : SERVED MARKETS : AUTOMOTIVE
Market Segment Discussion
Typical automotive applications employ magnetic materials which can be categorized by Device type as:
Actuators
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• Solenoids
Holding / Clamping
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Motors
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• Rotary permanent magnet motors
• Stepper motors
• Air core gauge motors
• Speakers
Sensors
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• Hall effect
• Magnetostrictive
• Variable reluctance
• GMR
Switches
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• Reed switches
• Hall effect switches
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The average automobile contains over 50 magnets with the number increasing as more functions are moved to drive-by-wire and as more luxury items become standard features. Arnold is prepared to supply the full range of magnetic products into this marketplace. Contact us to find out how we can assist you.
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Most automotive devices fall into three catagories: sensors, motors, and actuators. The computor that controls automotive functions uses the sensors as its ears, eyes and sense of touch. When input information is processed, output is directed to motors and actuators. Select the image to the right to view a chart of the many types of motors which are in use today.
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 Click picture to enlarge. |
Quality and Environmental Management Systems
As evidence of our commitment to the automotive market and to continuous improvement, QS 9000 certification has been achieved and selected manufacturing locations have also been certified under ISO 14001 for environmental compliance.
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| Applications Engineering |
Whether your company has sophisticated in-house magnetics design capabilities or a more modest facility, our Applications Engineers are ready to support your efforts through the entire product life cycle including:
• Conceptualization
• Initial design
• Prototyping
• Design optimization
• Pre-Production trials
• Validation testing support
• Production issues
• Cost reduction activities
• Next generation designs
Additional capabilities:
• Magnetic field mapping
• Magnetic properties testing
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Design Assistance
Applications engineers at each of our manufacturing locations and at our world class Magnetics Technology Center in Marengo, Illinois (near Chicago), offer comprehensive design assistance.
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- Magnetic modeling: 2D, Radially symmetric, 3D, Temperature dependence
- Design relationships to your Hall sensor and application Specifications
Complete analysis includes studying the effects of the operate and release point of the Hall sensors compard to the magnetic output waveform
- Quadrature encoders
- Switches and latches
- Ratiometric / Linear Halls
- Pulse counters
- Complex holding force calculations
- Insert and overmolding designs
- Manufacturability analysis
- Measurement capability to verify design
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| Magnetic Prototyping, Testing and Training |
Extensive magnetic prototyping and testing capabilities are available at our manufacturing locations and at our Magnetics Technology Center in Marengo, Illinois, USA.
Seminars in Magnetics are also available either at the Technology Center or at your company location. These classes are tailored to satisfy your needs, whether for inexperienced, non-technical persons or your most expert designers.
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| Boundary and Finite Element Analysis (BEA, FEA) |
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Complex devices can be modeled using boundary or finite element analysis.
Magnetic circuit analysis can lead to design innovation such as in this device which provides combinations of pole patterns to achieve precision switching of a Hall effect sensor (switch).
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| Application Example |
Air Core Gauges utilize magnets and are a type of motor. The field from a permanent magnet interacts with an electromagnetic field where the intensity is electronically varied depending upon speed, fuel level, oil pressure, rpm's etc.
Typically the magnets are injection molded ferrite or neodymium-iron-boron ("Neo"), sintered alnico, sintered Neo, or Iron-Chrome-Cobalt. The "average" vehicle contains four gauges. The total number of air core gauges manufactured each year is estimated at over 100 million.
The injection molded ferrite magnets illustrated here were manufactured by the Bonded Magnet Group of Arnold. The magnet material is insert injection molded on the metal staff. Upon extraction from the molding operation these magnets are ready for assembly into the gauge.
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