Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Automobiles – Brakes (1)
- Brakes (1)
- CAD/CAM (1)
- CNC (1)
- Control system synthesis (1)
-
- Fuzzy logic control (1)
- Kalman filters (1)
- Nonlinear control systems (1)
- Observers (1)
- PID control (1)
- Road vehicles (1)
- Robust control (1)
- Scanning probe (1)
- Sliding mode control (1)
- State feedback (1)
- Surface measurement (1)
- Tires — Traction (1)
- Traction (1)
- Variable structure systems (1)
- Vehicles – Brakes (1)
Articles 1 - 2 of 2
Full-Text Articles in Controls and Control Theory
On-Line Free Form Surface Measurement Via A Fuzzy-Logic Controlled Scanning Probe, Ming Chang, Paul P. Lin
On-Line Free Form Surface Measurement Via A Fuzzy-Logic Controlled Scanning Probe, Ming Chang, Paul P. Lin
Mechanical Engineering Faculty Publications
This paper presents a system and methodology for on-line free form surface measurement via a scanning contact probe installed on a CNC (computer numerical control) machine. The scanning probe provides more sampling points than any traditional touch trigger type of probes used on CNC machines, and better measuring accuracy than laser displacement sensing or structured lighting. The presented measuring system's main advantage is that the number of measured points can vary with the change of surface curvature. To improve the measuring stability and continuity, fuzzy logic control, in lieu of traditional PID control, is employed. As a result, the …
Sliding Mode Measurement Feedback Control For Antilock Braking Systems, Cem Unsal, Pushkin Kachroo
Sliding Mode Measurement Feedback Control For Antilock Braking Systems, Cem Unsal, Pushkin Kachroo
Electrical & Computer Engineering Faculty Research
We describe a nonlinear observer-based design for control of vehicle traction that is important in providing safety and obtaining desired longitudinal vehicle motion. First, a robust sliding mode controller is designed to maintain the wheel slip at any given value. Simulations show that longitudinal traction controller is capable of controlling the vehicle with parameter deviations and disturbances. The direct state feedback is then replaced with nonlinear observers to estimate the vehicle velocity from the output of the system (i.e., wheel velocity). The nonlinear model of the system is shown locally observable. The effects and drawbacks of the extended Kalman filters …