20 Strain Gage Based Transducers Wheel Force Transducer

Charlevoix
Milford
2
Company Profile
• Incorporated in 1960
• Manufacturer of measurement equipment
- Slip ring assemblies
- Telemetry
- Strain gaged based transducers
- Signal conditioning electronics
• Provider of engineering services
- Data acquisition and analysis
- Failure analysis
- FEM and dynamic computer simulation
- Product (re)design
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Instrumentation Slip Ring Assemblies
SLIP RING
SLIP RING
OVER-SHAFT
APPLICATION
EXAMPLE
END-OF-SHAFT
APPLICATION
EXAMPLE
MANY OPTIONS INCLUDING:
• End-of-shaft and over-shaft (thru-bore) types
• Solder terminals and/or connectors
• Built-in encoders, F-V electronics, strain gage & TC amplifiers
• Weatherproof
• Custom builds
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Instrumentation Slip Ring Assemblies
some end-of-shaft types (many sizes and ring counts available)
This model has
built-in encoder &
F-V electronics
This model has
a strain gage
amp built-in to
the rotor
All models feature:
• Instrumentation quality rings and brushes
• Permanently lubricated bearings
• Rugged construction
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Instrumentation Slip Ring Assemblies
some over-shaft types (many sizes and ring counts available)
This model has
an encoder and
built-in spinning
amplifier
All models feature:
• Instrumentation quality rings and brushes
• Permanently lubricated bearings
• Rugged construction
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Automotive Half Shaft Slip Ring Assemblies
• Mounts on shafts up to 1.2” in diameter
• Weatherproof system
• Optional built-in strain gage amplifier
• Optional 60 pulse/rev encoder
MICHIGAN SCIENTIFIC CAN TAKE YOUR PRODUCTION SHAFT,
STRAIN GAGE, CALIBRATE, MOUNT SLIP RING, AND RETURN COMPLETE
WEATHERPROOF ASSEMBLY READY TO INSTALL IN YOUR VEHICLE
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Strain Gage & Thermocouple Spinning
Amplifiers
(for slip rings without built-in amps)
Specifically designed to “stack-on” most MSC end-of-shaft slip ring rotors.
Locates amplifier close to the spinning sensor for improved signal quality.
Particularly beneficial for noisy environments.
1-ch Strain Gage Amp
3-ch TC Amp
STRAIN GAGE AMP
• Very stable bridge excitation voltage
• Adjustable gain and shunt-cal resistor
• Remote shunt-cal and bridge-excitation-kill control
TC AMP
• Thermocouple models available with 2 or 3 channels (all TC types)
• Built-in cold junction compensation
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Strain Gage & Thermocouple Spinning Amplifiers
Amplifier Power and Control Box
A single “Amplifier Power Unit”…
…runs multiple MSC “Spinning Amp’s”
• One box can power and control 20+ amplifiers
• 12 VDC and 120 VAC powered types
• Remote shunt-cal and bridge-excitation-kill control
• Use with any MSC spinning amplifier
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Custom Design & Build Slip Ring & Signal Conditioning
Automatic transmission
turbine shaft slip ring
Automatic
transmission
pancake
slipring
Rail wheel spinning
amp package
Strain
gaged
crankshaft
with
spinning
amps
6-ch 1/4 arm strain gage
spinning amp package
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Telemetry
Non-contact digital systems
• For strain and thermocouple sensors
• Up to 6 channels per transmitter
• Battery or induction powered
• Up to 1 kHz bandwidth
• Automatic calibration and bridge-kill check on power-up
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Telemetry Hardware & Applications
Automotive flexplate torque transducer
POWER
REGULATOR
STRAIN GAGED
BEAMS
TRANSMITTER
AND AMPLIFIER
RECEIVER BOX
SECONDARY COIL
PRIMARY
(STATIONARY)
INDUCTION COIL
• Measures high frequency dynamic engine torque input to transmission
• Induction powered (no battery)
• Customer’s flexplate is custom engineered to accurately measure torque
• Complete build-up and balance by MSC - we ship ready to install
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Telemetry data from Flexplate Transducer
High Bandwidth Torque Data shows individual cylinder firing
Engine Torque (ft*lbs)
Both High and Low Bandwidth Data signals are
available for simultaneous recording.
Low Bandwidth Data
provides average torque output
Once Per Revolution Pulse from crank shaft position sensor
Time (seconds)
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Telemetry Hardware & Applications
Automotive propshaft transducer
RECEIVING
ANTENNA
PRIMARY
INDUCTION
COIL
POWER
REGULATOR
STRAIN
GAGED TUBE
SECTION
SECONDARY
INDUCTION
COIL
TRANSMITTER
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Telemetry Hardware & Applications
Motorsports propshaft transducer
(internally mounted electronics & gages)
TELEMETRY
ELECTRONICS
INSIDE TUBE
STRAIN GAGE
TORQUE
TRANSDUCER
ANTENNA
TRANSMITTER
SECONDARY
INDUCTION
COIL
POWER
REGULATOR
PRIMARY
INDUCTION
COIL
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Strain Gage Based Transducers
Standard Three-Directional Load Cells
GAGED: standard 3-Directional Load Cells
• For 3-D force measurement at component interfaces
• Mount in tandem to calculate roll, pitch, and yaw moments
• Capacities from 250 lbs (1110 N) to 100,000 lbs (444,000 N)
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Strain Gage Based Transducers
Pedal Force Transducers (round & low-profile-rectangular)
• 500 lb (2200 N) capacity
• High accuracy even with off-center loading
• Fits standard brake and parking-brake pedals
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Strain Gage Based Transducers
Wheel Torque Transducer, with Thermocouples
Wheel torque
transducer element
Complete assembly with
slip ring, thermocouples,
and spinning amp
• Available in various capacities and sizes (13” and larger)
• MSC can make your custom wheel and hub adapters
• High resolution models available
• Environmentally protected & temperature compensated
• Optional Thermocouple channels
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Strain Gage Based Transducers
Wheel Force Transducers (6-axis)
A.T.V.
Passenger car and truck
Heavy truck (single and dual wheels)
• Measures 3 forces and 3 moments
• Low crosstalk
• Environmentally protected and temperature compensated
• Mates to same wheel and hub adapters as MSC Wheel Torque Transducers
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Strain Gage Based Transducers
Wheel Force Transducer: Passenger Car Hardware
Connectors to
Amp Assembly
HUB ADAPTER
WHEEL ADAPTER
TRANSDUCER INSTALLED
SLIP RING & SPINNING
AMPLIFIERS ASSEMBLY
COMPLETE ASSEMBLY
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Strain Gage Based Transducers
Wheel Force Transducer: LWCT Interface Electronics
• On-the-fly coordinate transformation
• Automated zeroing of transducer
• Automated shunt-based sensitivity set-up via “smart chip”
• Bridge power kill for noise check
• Fault alert LED
• One box per transducer (stackable)
• Handheld remote control
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Wheel Force Transducer - Usage Examples
Vehicle rollover potential
Traction studies
Brake development & testing
Suspension forces
Suspension durability lab testing
Tire wear
Road to lab correlation
etc…etc...
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Wheel Force Transducer
Suburban Right Front Wheel Loads
Pothole at 25 MPH
5000
70
4500
4000
60
3500
50
Fx
Longitudinal
(lb)
2500
2000
40
1500
1000
30
Speed (mph)
Output (lb. or lb-ft)
3000
Fz Vertical
(lb)
Radial Force
Magnitude
(lb.)
500
0
-500
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2.3
2.4
2.5
2.6
-1000
2.7
Speed (.044
sec avg)
(MPH)
2.8
10
-1500
-2000
0
Time (sec)
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Wheel Force Transducer
2200
60
2000
55
1800
50
1600
45
1400
40
1200
35
1000
30
800
25
600
20
400
15
200
10
0
5
-200
0
0
0.5
1
1.5
2
Time (sec.)
2.5
3
3.5
Fvx
Longitudinal
(lb.)
Speed (MPH)
Force (lb.) or Torque (lb-ft)
Right Front Wheel Loads Recorded on Suburban at Milford
Severe Braking with Transition from Dry Surface to Wet Tile Surface
Fvy Lateral
(lb.)
Fvz Vertical
(lb.)
Speed (mph)
B12 RF
Resolver
Sine
4
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Wheel Force Transducer
25
Strain Gage Based Transducers
Motorcycle with Wheel Force Transducer
Induction
Power Supply
Telemetry
WFT
LWCT-TEL Interface
Telemetry (no slip rings)
• Measures 3 forces, 3 moments, wheel position and speed
• On-the-fly Coordinate Transformation and crosstalk compensation
• Michigan Scientific can make custom front & rear wheel and hub adapters
•
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Strain Gage & TC Services
Custom strain gage & TC transducers from a variety of
prototype & production components.
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Powertrain Torque Measurements
Michigan Scientific can make transducer systems to
measure the various powertrain torques shown.
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Full Service On-Site Data Acquisition
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Fiber-Optic Signal Links
Component and full-scale vehicle
Electromagnetic Compatibility (EMC)
engineering and testing
Transmit signals over fiber-optic cables,
in and out of strong electromagnetic fields
• RF IMMUNE
• STABLE
• LONG BATTERY LIFE
BI-DIRECTIONAL: battery powered transmitter
and receiver are both EMI / RFI Hardened
Rack Mount or Bench Top, 2 – 12 channel
receiver configurations
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Fiber-Optic Signal Links
MSC’s most popular module types
Analog
DC – 20kHz, DC – 1MHz,
or DC – 8MHz (for Video signals)
Audio
20 – 20kHz
Position
0 – 32” linear displacement
Remote Power Relay
four 5A, or one 30A latching SPST
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Unattended Data Acquisition Recorder
ProDAS™
•
•
•
•
•
•
•
•
•
•
User programmable software
Compact Flash data memory (up to 8 GB)
Battery backed-up memory
Windows 2000 / NT / XP menu setup
Menu driven system setup
Standard RS232 and USB communications
ALDL/Class II / CAN bus data logging
Strip chart / graphic features
GPS / vehicle tracking capable
Anti-Aliasing filters
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Frequency to Voltage Electronics
Velocity (frequency) and Position (pulse count)
from most types of Encoder and Mag-pickup signals.
• 4 Single-phase (or 2-pair Quadrature) pulse inputs, with up to ± 120V range
• Input frequency range of 0.150 Hz to 120 kHz
• Additional analog input, allows easy calibration to external speed reference
• 4 FAST outputs, updated on every period of the input signals
• Outputs are 16-bit with ± 10V range
• Configured via USB cable and Windows compatible software
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Volumetrics™
Acoustical method for measuring cavity volume.
Specifically designed to determine engine compression ratios.
• Measures compression volume
• Measures TOTAL volume
• Use to locate top dead center
• Temperature compensated
• Built-in reference volume
• Portable
• Requires shop air and 110 or 240 VAC
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Summary of Engineering Services
Custom strain gage based transducer design and build
Data acquisition, analysis, documentation
Fatigue analysis
Failure analysis
Product redesign
Finite Element Modeling (FEM)
Dynamic computer simulation using DADS
(Dynamic Analysis and Design System)
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Partial List of MSC Customers
ABB Automation Tech. AB
Abbott
Accu-Chek
Advanced Info. Eng. Serv.
Akebono
Alberta Research Council
Alluvial Mining Limited
Alstom Power Turbozam
American Axle & Mfg
American Cooling
Amoco Fabrics & Fibers
Amtrack
Anger Associates
Applanix Corp
Arvin Meritor
Associated Spring
ATK Thiokol
Auburn Consolidated Ind.
Audi
Avalon Engineering Ltd
BC Hydro
Behr
Birdsall Tool & Gage
BNR Solutions LLC
Bobcat
BorgWarner
Bosch GMBH
Brembo Engineering Brazil
Bremco
Bridgestone
Brockner
Brown
Brown Printing Co.
Bruckner
Burton St. Recycling
Caesar Datensysteme GMBH
G.M.A.T.C.
Gates
GE Hydro Inepar Do Brasil
General Machine of Easley
GEO-3D Inc.
GKN
GKN Driveline International
GKN Lobr GmbH
Camber
Canadian Instrumentation
Carnegie Mellon University
Carr Engineering
Carter Products
Castrol Tech Centre (UK)
Caterpillar
Century Geophysical
Cessna Aircraft
CL Technologies
Clipper Windpaower Tech
Closed Loop Technology
CNH
CNH Belgium NV
Comet Industrial Corp
Continental Teves
Continetal Do Brasil
Cosworth Technology
Cummins
Daimler Chrysler
DAS Division - Korea
DCL
Deere
Defiance
Denso International America
Detroit Diesel
Diamond Automation
dragonfly Pictures
Dragonfly R & D
Dynamic Technology
Eaton
Electrolux
Ellison
Engineered Cooling Systems
ENSCO
Evernham Motor Sports
Exatec
Exponent
Ferguson
Fiat, Brasil
FiberOptic
Fluid Air
Ford
Ford Australia
FRAS-LE S/A BRASIL
Freightliner Test Center
Freudenberg
Frontier Systems
Fry Communications
GKN United Kingdom
GM
GM Powertrain
Goodyear
Goodyear Luxembourg
Goss Intl.
Gregory, GmbH
GS Engineering
Hamilton Sundstrand
Hankook Tire
Harbor Industries
Harley Davidson
Hartwig, Inc
Hartzell
Harvey Mudd College
Hayes Lemmerz Intl
Heinz Kalthoener Gallizinstr
Hilliard
Holdens Limited Australia
Honda
Honda of America
Honeywell Bremsbelag GMbh
Horton
Hyundai Motor Co.
Idiada Auto.Tech. S.A.
IMC Potash
Imotec Mestechnik Germany
Independent Test Services
Indiana Mills & Mfg, Inc
Industrial Machine Works
Industrias Medicas Barner
Innovative Tooling Solutions
Intec GMBH
Intelligent Products & Systems
Intertechnology
Intier
Iveco Motorenforschung
Jatco
Jisoon Hwang
John Deere France
John Deere Germany
Johnson Controls
K&S Services
Kelsey Hayes
Kenrich
Korea Railroad Research Inst.
Kubota
Lako Tool
Lawrence Livermore Natl Lab
LDW Associates
Link
Link West
Load Indicator AB Liab
Logitech Ltd
Lucas Automotive GMBH
Luchsinger
LuK, Inc.
MAC Equipment
Manta
Maurer Scientific
Metaldyne
Metro Computing Corp
Naval Surface Warfare Center
NCMT Ltd
Neoteric Concepts
New Venture Gear
Northrup Grumman
Novi Precision Products
NREL/National Wind Tech Ctr.
Nu-Con Ltd
Okuma
Panasonic, Fibre Optics
Metrol
Michelin
Morgan Bronze Products, Inc
Morganite Inc
Motor Industries Co. Ltd, India
MRS Logistica SA Brasil
MSX International
MTD Products
MTS Systems Corp
Multimatic Test Center
N.G. Brown & Assoc
Peiseler GMbh
Pemstar
Pentronic, Sweden
Performance Friction
Perkins Engines Co., Ltd.
Pirelli , Italy
Plexon
PM Instrumentation, France
PMC
Polaris
Saab
Sachs Automotive
Select Controls
Sense Tek Co. Ltd, Taiwan
Sensor Data
Servo2000 S.R.L.
Shivalik Bakshi
Siemens AG
Sinan Lacin
SixDOF Testing Analysis
SK Trading
Stoney Automotive Engineering
Stresau Lab
Subsurface Imaging
Precision Tool Service
Progress Buyers Jaguar
Pyxis
R&D
R&D Trading Co.
RCR Administratyive Services
Ricardo
RJG Technology
Roush
S.M.Linson Co.
S.T. Brown, Australia
Tera Xtal Tech Corp
The Tool & Gage House
Toro
Torotrak
Tosoku
Toyota
Trane
Transcontinental Impressions
Transmission Technologies
Transportation Research Ctr.
Trio Tool Co.
Superior Conrols
Superior Gear Box
Sverdrup Technologies
Tait Control Systems
Tamrock oy Tampereen Tehdas
Teledyne
TRW Automotive
TuffTorq
US Army TACOM
Underwriter Lab
US Tsubaki
UTD
Van Doorne's Transmission
Veecol Aii
Velcon
Vibracoustic North America
Visteon
Volke Entwicklungsring GMBH
Volkswagen
Volvo Car
Whirlpool
Wojan Co.
Yazaki
Yujin Machinery Ltd, Korea
ZF-Getriebe
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These slides can be downloaded (pdf format)
from our website:
www.michsci.com
Charlevoix
(231) 547-5511
Milford
(248) 685-3000
- THANK YOU -
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