Montag, 13. Dezember 2010

Einspurmodell

 http://de.wikipedia.org/wiki/Einspurmodell

Einspurmodell
Annahmen:
- Fahrgeschwindigkeit = konstant
- Zwei Freiheitsgrade ( Gierbewegung & Schwimmbewegung )




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http://hoppecorp.de/FHTW/Skript_FZT_Teil8.pdf
http://www.uni-due.de/imperia/md/content/mechatronik/lehre/fahrdynamik_kap2_zusatz.pdf

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Lateral Dynamic Response of Vehicle Equipped with Electric Power Steering System
http://www.aisst.org.tn/PDF/document/sd75.pdf

- vehicle lateral dynamic response.
- modeling of  electric Power Steering.
- the vehicle lateral dynamics model evaluates the lateral and yaw motions of the vehicle.
- The steering angle is the input for the vehicle model to estimate  the vehicle lateral dynamics response.
- the lateral acceleration and yaw velocity are the outputs for the vehicle model.
- Electric Power Steering model.
- the study of electric power assisted steering on the vehicle lateral dynamics response.
- Bicycle half-car handling model
- estimate the lateral and yaw motions of the vehicle body.
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A Simulink model for Vehicle rollover prediction and prevention
  http://web.ics.purdue.edu/~chiu2/research/thesis.pdf
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Full Vehicle Dynamic Modeling for Chassis Controls
http://www.fisita.com/students/congress/sc08papers/f2008sc021.pdf

- Horizontal vehicle model is 3DOF.
  • It is consist of longitudinal, lateral translation, and rotation of vehicle mass center.
  • 3 DOF Horizontal vehicle model 
-  Vertical vehicle model
This model has 3 DOF of mass center(vertical, roll, pitch dynamic) and 4 DOF of each wheel(wheel vertical dynamic).
- 3DOF Horizontal dynamic
- 7DOF Vertical dynamic
- 4DOF Wheel dynamic

http://www.buchhandel.de/WebApi1/GetMmo.asp?MmoId=1000099&mmoType=PDF

- lateral vehicle dynamics.
- study kinematic and dynamic models for lateral vehicle motion.

- control system design for lateral vehicle applications
- Yaw stability control systems

  • the function of the yaw control system is to restore the yaw velocity of the vehicle as much as possible to the nominal motion expected by the driver. 
- a kinematic model for the lateral motion of a vehicle
- a bicycle model of the vehicle
- The steering angles (delta front),(delta rear)
- for the front wheel only steering (delta rear = 0)
- the center of gravity of the vehicle (C)
- the distance of the A, B to the c.g of the vehicle  (L front ,L rear)
- the motion of the vehicle  X,Y,W(epzei).
- the velocity of the c.g. is (V), makes angle B(Beta) with the longitudinal axis of the vehicle.
- the slip angle of the vehicle (beta).
- the heading angle of the vehicle (epzei).
- the velocity vector at the front wheel makes an angle with the longitudinal axis of the vehicle.
- the velocity vector at the rear wheel makes an angle with the longitudinal axis of the vehicle.
- the slip angle = 0 at the speed < 5 m/s --> the lateral force by the tires is small.
- steering angle (delta) = heading angle(epzei) + slip angle (beta) .

  • Bicycle model of lateral vehicle dynamics:
  • at higher vehicle speed : (kinematic model + dynamic model) for lateral vehicle motion
  • Bicycle model is 2 degree of freedom : the vehicle lateral position (y) and the vehicle yaw angle(epzei).
- Single track model for vehicle lateral dynamics

  1. Kinematic vehicle model  
  2. Dynamic vehicle model in terms of inertial lateral position and yaw angle
  3. Dynamic vehicle model in terms of road-error variables
  4. Dynamic vehicle model in terms of yaw rate and vehicle slip angle.
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Vehicle Dynamics
http://homepages.fh-regensburg.de/~rig39165/skripte/Vehicle_Dynamics.pdf


Single-track model for lateral dynamics   ----- Einspurmodell für Querdynamik
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einspurmodell

http://hoppecorp.de/FHTW/Skript_FZT_Teil8.pdf

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