Search
Now showing items 1-10 of 11
Well-Conditioned Observer Design for Observer-Based Monitoring Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Observer-based monitoring systems for machine diagnostics and control are receiving increased attention. These observer techniques can estimate process and machine variables from inexpensive, easy ...
Measurement Signal Selection and a Simultaneous State and Input Observer
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An observer that can simultaneously identify the state variables and inputs of a linear time-invariant system from outputs (measurements) and their first derivatives is derived. The sufficient ...
Steady-State Optimal State and Input Observer for Discrete Stochastic Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Model-based machine diagnostics techniques require the modeled states and machine inputs to be measured. Because measurement of all the states and inputs is not always possible or practical, a ...
Current Monitoring of Field Controlled DC Spindle Drives
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Unmanned machine tools as part of an automated factory require reliable inexpensive sensors to provide machine and process information. The electric current in the DC motor of a CNC machine ...
Analysis of Power Monitoring on AC Induction Drive Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The performance of AC induction motor drive systems as torque sensors is evaluated. Their potential for monitoring tool wear or breakage as well as machine component failure is discussed. A ...
A State-Space Model for Monitoring Thermally Induced Preload in Anti-Friction Spindle Bearings of High-Speed Machine Tools
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Catastrophic and premature bearing failure caused by excessive thermally induced bearing preload is a major design problem for spindle bearings of high-speed machine tools. Due to a lack of a ...
An Algorithm for Obtaining Proper Models of Distributed and Discrete Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The development of automated modeling software requires strategies for synthesizing mathematical models of systems with distributed and discrete characteristics. A model order deduction algorithm ...
Active Thermal Preload Regulation for Machine Tool Spindles With Rolling Element Bearings
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Modern machine tools are required to operate at wide speed ranges for higher productivity and quality. Because spindle bearings generate a large amount of heat at high speeds, the compensation ...
Development of Proper Models of Hybrid Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A method to improve the ability of design engineers to generate proper dynamic models of systems from sets of component models is developed. This two stage method, called Eigenvalue MODA, is ...
Fundamental Factors in the Design of a Fast-Responding Methanol-to-Hydrogen Steam Reformer for Transportation Applications
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Improving the dynamic response of the steam reformer in a fuel cell power plant designed for transportation applications will enable the power plant to operate in a transient manner with a ...