Revised 4/6/17 Company Branding: – Name Change from ......2017/04/06 · Technical DeepDive...
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1 Revised 4/6/17 – Name Change from Levant Power to ClearMotion
Transcript of Revised 4/6/17 Company Branding: – Name Change from ......2017/04/06 · Technical DeepDive...
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Company Branding: Project CanvasRevised 4/6/17 – Name Change from Levant Power to ClearMotion
Product Overview Technical Deep Dive
Contents
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!
Video Demonstration: Super-Active Ride Control
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!!
Athletic Handling
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Silky Comfort
Two cars in one: Industry pursuit over 30 years, no solution yet.
Constant Tradeoff: Ride vs. Handling
Novel Approach: Local electrohydraulics and controls
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Product Overview Technical Deep Dive
System Architecture Deconstruction of a bump Performance & Tuning Embedded Software Architecture
Contents
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GenShock System Architecture
Energy Management
Corner Controller x4(contains processing & sensors)
Body Accelerometer
Central Controller x1 (veh dynamics)
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Hydraulic Principle
Passive Quadrants (I and III)! Oil Flow through the valve in both directions! Volume of the piston rod is compensated by the gas accumulator! Gas pressure supports rebound forces! Hydraulic pump acts like a variable damping valve for oil flow in extension and
compression
ActivalveAccumulator
Dividing Piston
GenShock Fundamentals
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Hydraulic Principle (cont.)
Active Quadrants (II and IV)! Activalve is able to supply oil volume independent of the stroke! Thus, it can increase or decrease pressure acting on the piston
Activalve Activalve
Compression Force Rebound Force
High Pressure Low Pressure
GenShock Fundamentals
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Product Overview Technical Deep Dive
System Architecture Deconstruction of a bumpPerformance & Tuning Embedded Software Architecture
Contents
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Full active controlSpeed bump example
Ks
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FcKs
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Ks
3 4
Fc FcKs
Fc
zc- zw
Force vs Position
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Active Energy
Fc
z’c- z’w
Force vs Velocity
Reactive Energy
Reactive Energy Active Energy
Typical Semi-active Damper Operating Range
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Speed Bump
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Product Overview Technical Deep Dive
System Architecture Deconstruction of a bumpPerformance & Tuning Embedded Software Architecture
Contents
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GenShock vs. Passive Roll Rate: Offset Bumps
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Roll Curve Tunability & Power Tradeoffs
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Rod acceleration is reduced dramatically at the 1st harmonic
Noise Cancellation Algorithms
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Product Overview Technical Deep Dive
System Architecture Deconstruction of a bumpControl Loop Timing Performance & Tuning Embedded Software Architecture
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GenShock Corner Application Software Architecture
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• Bare metal application for increased performance• Model based design with Matlab/Simulink enables accelerated development• Control abstraction layers create robust, verifiable design• Standards based protocol implementations for ease of integration with OEM’s
GenShock Central Application Software Architecture
• Coordinated control of vehicle dynamics (cornering, braking, accelerating, etc.)• System state management (power on/off, fault management, etc.)• Intelligent power control• System software update
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Thank You.
