Essays about: "Friction Estimation"

Showing result 1 - 5 of 41 essays containing the words Friction Estimation.

1. 1. Traction Adaptive Motion Planning for Autonomous Racing

   University essay from KTH/Skolan för industriell teknik och management (ITM)

   Author : Shekhar Raikar; [2022]
   Keywords : Autonomous vehicles; Motion planning and control; Traction-adaptive; Localization; Robotics; GPU Sampling; Augmented Real Time Iteration.; Autonoma fordon; Rörelseplanering och kontroll; Traction adaptiv; Lokalisering; Robotik; GPU Sampling Augmented Real Time Iteration;

   Abstract : Autonomous driving technology is continuously evolving at an accelerated pace. The road environment is always uncertain, which requires an evasive manoeuvre that an autonomous vehicle can take. READ MORE

3. 2. Tyre Performance Estimation during Normal Driving

   University essay from Linköpings universitet/Fordonssystem

   Author : Marcus Grip; [2021]
   Keywords : tyre performance; tread wear; tyre wear; online estimation; friction performance; velocity performance; friction potential; longitudinal stiffness; tyre stiffness;

   Abstract : Driving with tyres not appropriate for the actual conditions can not only lead to accidents related to the tyres, but also cause detrimental effects on the environment via emission of rubber particles if the driving conditions are causing an unexpectedly high amount of tread wear. Estimating tyre performance in an online setting is therefore of interest, and the feasibility to estimate friction performance, velocity performance, and tread wear utilizing available information from the automotive grade sensors is investigated in this thesis. READ MORE

4. 3. Evaluation of Traction Control Systems for an Electric Forklift Truck

   University essay from Linköpings universitet/Fordonssystem

   Author : Mattias Karlsson; Sebastian Johansson; [2021]
   Keywords : forklift; traction control; maximum transmissible torque; model following control; sliding mode control; slip; asr; tcs; mfc; mtte; smc; electric vehicle; master thesis;

   Abstract : This thesis evaluates different controllers for traction control on an electric forklift truck and has been done in cooperation with Toyota Material Handling Manufacturing Sweden. The need for a traction control system has increased with the introduction of lithium-ion batteries replacing the older lead-acid batteries, reducing the battery weight and therefore the downward force on the driving wheel increasing the risk for slip. READ MORE

5. 4. Dynamic Torque Modeling of a Wet Lamella Clutch Pack

   University essay from Lunds universitet/Industriell elektroteknik och automation

   Author : Jacob Wallersköld; Johan Appelros; [2021]
   Keywords : wet lamella clutch; friction modeling; torque modeling; torque accuracy; force measurements; system identification; grey-box modeling; Technology and Engineering;

   Abstract : Wet lamella clutches are used in the automotive industry to enable all-wheel drive and thereby increase acceleration, handling and safety of cars. The clutches work by transmitting torque from an incoming- to an outgoing shaft through a series of lamella - steel-disc friction surfaces (lamella pack), lubricated by an oil. READ MORE

6. 5. Extended and Unscented Kalman Filtering for Estimating Friction and Clamping Force in Threaded Fasteners

   University essay from Uppsala universitet/Signaler och system

   Author : Mohammad Al-Barghouthi; [2021]
   Keywords : Estimation Theory; Extended Kalman Filter; EKF; Unscented Kalman Filter; UKF; Observability; Friction; Clamping Force; Tightening; Torque Controlled; Bolt; Threaded Fasteners;

   Abstract : Threaded fasteners tend to break and loosen when exposed to cyclic loads or potent temperature variations. Additionally, if the joint is held tightly to the structure, distortion will occur under thermal expansion issues. READ MORE