A5051681846- Ruminant Nutrition and Digestive Physiology
- Magnetic Bearings and Levitation Dynamics
- Adaptive Control of Nonlinear Systems
- Inertial Sensor and Navigation
- Animal Nutrition and Physiology
- Vibration Control and Rheological Fluids
- Petri Nets in System Modeling
- Fault Detection and Control Systems
- Biopolymer Synthesis and Applications
- Iterative Learning Control Systems
- Geophysics and Sensor Technology
- African Botany and Ecology Studies
- Essential Oils and Antimicrobial Activity
- Reproductive Physiology in Livestock
- Veterinary medicine and infectious diseases
- Guidance and Control Systems
- Fungal Biology and Applications
- Probiotics and Fermented Foods
- Growth Hormone and Insulin-like Growth Factors
- Adaptive Dynamic Programming Control
- Real-Time Systems Scheduling
- Advanced Control Systems Design
- Control Systems and Identification
- Embedded Systems Design Techniques
- Tribology and Lubrication Engineering
University of Florida
2002-2021
Gyeongsang National University
2016
As computer and software technologies have advanced, the approach of Integrated Modular Avionics (IMA) has emerged in field avionics systems. The IMA can dramatically reduce production maintenance costs increase reliability these safety-critical real time hardware foundation must be able to provide guarantees application so that real-time constraints all applications are simultaneously satisfied. In addition, each protected from interference by other operating system itself while physically...
A methodology for dynamic neural network (DNN) observer-based output feedback control of uncertain nonlinear systems with bounded disturbances is developed. The DNN-based observer works in conjunction a filter state estimation using only measurements during on-line operation. sliding mode term added to the DNN structure robustly account exogenous and reconstruction errors. Weight update laws DNN, based on estimation, tracking errors, are proposed which guarantee global asymptotic regulation...
An adaptive robust integrated power and attitude control system (IPACS) is presented for a variable speed moment gyroscope (VSCMG)-actuated satellite. The developed IPACS method capable of achieving precision while simultaneously asymptotic tracking rigid-body satellite in the presence dynamic uncertainty VSCMG gimbals wheels. In addition, controller compensates effects uncertain, time-varying inertia properties. Some challenges encountered design are that input premultiplied by non-square,...
A robust adaptive fuzzy identification and trajectory tracking control approach is developed for a class of multi-input-multi-output (MIMO) nonlinear systems in the presense unmodeled uncertainties, parametric external disturbances. sliding mode-based model identification/observer method used to provide additional feedback unknown system dynamics. The error along with as composite update law logic based feedforward term. term conjunction recently integral sign (RISE) yield continuous...
The objective of this experiment was to evaluate the effects supplementing a rumen-protected source Met, N-acetyl-l-methionine (NALM), on lactational performance and nitrogen metabolism in early- mid-lactation dairy cows. Sixty multiparous Holstein cows early lactation (27 ± 4.3 d milk, SD) were assigned 4 treatments randomized complete block design. Cows blocked by actual milk yield. Treatments as follows: (1) no NALM (control); (2) 15 g/d (NALM15); (3) 30 (NALM30); (4) 45 (NALM45). Diets...
An adaptive attitude controller for a small satellite utilizing variable speed control moment gyroscopes (VSCMGs) is proposed, which performs integrated singularity avoidance and momentum management using null motion. yields accurate tracking while the VSCMG motion achieves management. The proposed compensates parametric uncertainties present in nonlinear dynamics. Asymptotic exponential are proven via Lyapunov stability analysis. Simulation results indicate performance of as steering law.
A recurrent neural network (RNN)-based adaptive attitude controller is developed, which achieves tracking in the presence of uncertain actuator inertia addition to time-varying, satellite inertia. The control torques are produced by means a cluster variable speed moment gyroscopes (VSCMGs). results from RNN structure while simultaneously acting as composite VSCMG steering law. null motion strategy exploited perform gimbal reconfiguration for singularity avoidance and wheel reg-ularization...
Data from 13 peer-reviewed papers were summarized to examine the effect of silage inoculation with homolactic or facultative heterolactic bacteria (HAB) on performance dairy cows. The effects compared by raw mean differences (RMD) between inoculant and control treatment means weighted inverse variance using random-effect models. Heterogeneity sources evaluated meta-regression included as covariates crop species (grass, alfalfa, corn, mixtures silages representing 68.8, 12.5, 6.3, 12.5%...
This experiment was conducted to study the effects of spices (Rosmarinus officinalis, RO and Allium cepa, OP) on in vitro rumen fermentation, methane production digestibility corn silage-based ration. A total mixed ration (TMR; 0.5 g/sample) for dairy cows treated with each at doses 0 (Control), 5 (Low), 10 (Med) 15% (High) TMR or monensin (1.2 mg/g TMR). Each mixture incubated triplicate 50 mL a fluid-buffer inoculum (ratio 1:2) 120-mL gas-tight culture bottle 39°C 24 h two runs. In DM...
This study examined if adding microbial inoculants or propionic acid to alfalfa silages contaminated with Escherichia coli O157:H7 would inhibit the growth of pathogen during after ensiling. Alfalfa forage was harvested at early bloom stage, wilted a DM 54%, chopped 19-mm lengths, and ensiled treatment one following: 1) distilled water (Control), 2) 1 × 105 cfu/g E. (EC), 3) EC 106 Lactobacillus plantarum (EC+LP), 4) buchneri (EC+LB), 5) 2.2 g/kg (EC+ACID). Each in quadruplicate laboratory...
Homolactic and facultative heterolactic acid bacteria (HAB) inoculants enhance silage fermentation by rapid production of lactic acid, which decreases the pH reduces DM nutrient losses. Data from 120 peer-reviewed papers were summarized to evaluate effects inoculation with HAB on profile. The analyzed comparing raw mean differences between inoculant control treatment means that had been weighted inverse variance using random models. Heterogeneity sources evaluated meta-regression included...
This study examined if adding bacterial inoculants or propionic acid to corn silage contaminated with Escherichia coli O157:H7 at ensiling, silo opening, after aerobic exposure would inhibit the growth of pathogen. Corn forage was harvested approximately 35% dry matter, chopped 10-mm lengths, and ensiled treatment one following: 1, distilled water (Control); 2, 1 × 105 cfu/g E. (EC); 3, EC 106 Lactobacillus plantarum (ECLP); 4, buchneri (ECLB); 5, 2.2 g/kg (ECA). Each in quadruplicate...
Data from 120 peer-reviewed papers were summarized to evaluate the effects of homolactic and facultative heterolactic bacteria (HAB; Lactobacillus plantarum, Pediococcus pentosaceus, Enterococcus faecium, rhamnosus, or their combinations) inoculation on aerobic stability microbial profile silages. The statistically analyzed by comparing raw mean differences between inoculant control treatment means that had been weighted inverse variance using random models. Heterogeneity sources evaluated...
SUMMARY Adaptive control design schemes in the presence of input saturation have received much attention over last two decades. However, few researchers addressed issue designing adaptive system unknown or variable saturation. We propose an backstepping method for single uncertain nonlinear with This uses error at previous time to estimate current easily and rapidly, normalization based on estimation is introduced ensure stability whole system. also suggest a new law improve performance...