Sökning: "Lennart Ljung"

Visar resultat 36 - 40 av 48 avhandlingar innehållade orden Lennart Ljung.

1. 36. Labile Verbs in English : Their Meaning, Behavior and Structure

   Författare :Alan McMillion; Magnus Ljung; Nils-Lennart Johannesson; Ulf Magnusson; Stockholms universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; labile verbs; ergative verbs; transitivity; causative; constructions; English language; Engelska språket;

   Sammanfattning : English has many verbs that syntactically occur in both transitive and intransitive clausal patterns. A subset of such verbs are called labile verbs, and these have a causative sense when they occur in the transitive pattern and a non-causative or inchoative sense in the intransitive pattern. LÄS MER

3. 37. Regression on Manifolds with Implications for System Identification

   Författare :Henrik Ohlsson; Lennart Ljung; Jonas Mårtensson; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; System Identification; High-Dimensional Regression; Manifold; Gray-Box Identification.; Automatic control; Reglerteknik;

   Sammanfattning : The trend today is to use many inexpensive sensors instead of a few expensive ones, since the same accuracy can generally be obtained by fusing several dependent measurements. It also follows that the robustness against failing sensors is improved. As a result, the need for high-dimensional regression techniques is increasing. LÄS MER

4. 38. Regularization for Sparseness and Smoothness : Applications in System Identification and Signal Processing

   Författare :Henrik Ohlsson; Lennart Ljung; Jacob Roll; Bo Wahlberg; Linköpings universitet; []
   Nyckelord :Regularization; sparsity; smothness; lasso; l1; fMRI; bio-feedback; TECHNOLOGY; TEKNIKVETENSKAP;

   Sammanfattning : In system identification, the Akaike Information Criterion (AIC) is a well known method to balance the model fit against model complexity. Regularization here acts as a price on model complexity. LÄS MER

5. 39. Active Engine Vibration Isolation using Feedback Control

   Författare :Claes Olsson; Ahmed El-Bahrawy; Lennart Ljung; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : Broad band active vibration isolation of automobile engine using linear and nonlinear feedback control is considered. The objective is to reduce the forces transmitted to the chassis and body, and, thus, reducing vibrations and structure borne noise inside the vehicle compartment when the engine is subjected to different excitations. LÄS MER

7. 40. A Nonlinear Optimization Approach to H2-Optimal Modeling and Control

   Författare :Daniel Petersson; Johan Löfberg; Lennart Ljung; Roland Toth; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Model reduction; LPV system; linear parameter varying; controller; control synthesis; H2; H2-norm; nonlinear optimization;

   Sammanfattning : Mathematical models of physical systems are pervasive in engineering. These models can be used to analyze properties of the system, to simulate the system, or synthesize controllers. However, many of these models are too complex or too large for standard analysis and synthesis methods to be applicable. LÄS MER