4 papers
Some Reflections on Sliding Mode Designs in Control Systems: An Example of Adaptive Tracking Control for Simple Mechanical Systems With Friction Without Measurement of Velocity
Romeo Ortega, Leyan Fang, Jose Guadalupe Romero
The objective of this note is to share some reflections of the authors regarding the use of sliding mode designs in control systems. We believe the abundant, and ever increasing, a…
Adaptive Compensation of Nonlinear Friction in Mechanical Systems Without Velocity Measurement
Jose Guadalupe Romero, Romeo Ortega, Leyan Fang +1
Friction is an unavoidable phenomenon that exists in all mechanical systems incorporating parts with relative motion. It is well-known that friction is a serious impediment for pre…
Interturn Fault Detection in IPMSMs: Two Adaptive Observer-based Solutions
Romeo Ortega, Alexey Bobtsov, Leyan Fang +2
In this paper we address the problem of online detection of inter-turn short-circuit faults (ITSCFs) that occur in permanent magnet synchronous motors (PMSMs). We propose two solut…
Voltage Control of the Boost Converter: PI vs. Nonlinear Passivity-based Control
Leyan Fang, Romeo Ortega, Robert Griñó
We carry-out a detailed analysis of direct voltage control of a Boost converter feeding a simple resistive load. First, we prove that using a classical PI control to stabilize a de…