A wider meaning of "fabric, structure" is found in classical Latin, but not in Greek usage. This meaning is found in late medieval French, and is adopted from the French into English in the midth century. In the 17th century, the word could also mean a scheme or plot, a meaning now expressed by the derived machination. The modern meaning develops out of specialized application of the term to stage engines used in theater and to military siege enginesboth in the late 16th and early 17th centuries.
The aim of this paper is to analyze the feasibility of a virtual sensing approach to perform a health diagnosis in the context of elevators. The virtual sensing approach will make use of an electromechanical model of the elevator and some measurements available in order to obtain several other physics virtual sensors.
A lab-scale elevator test bench will be used to test the methodology, obtaining several indicators and analyzing its evolution in time. The technology allows for very long strokes and high speeds, which opens up for hydraulic elevators in high-rise buildings.
The HILA cylinder is very compact and resource efficient. In this paper the focus is on Life Cycle Assessment. HILA technology turns out to be superior to conventional electric and hydraulic elevators but also to electric linear motor driven elevators.
Currently the best technological efforts to acoustically insulate elevator components are not able to prevent significant transmission of noise and vibration to the elevator shaft walls. The JORDAHL Acoustic Isolation product is designed to decouple this transmission chain, and so prevent the vibro-acoustic transmissions reaching the elevator wall and building structure.
Static, cyclic, and acoustic experimental investigations have been carried on different prototypes of JORDAHL Acoustic Isolation and have been accompanied by diverse optimization processes.
Initially the MRL was introduced as a green alternative to the hydraulic elevators. It was pitched as a solution where height restrictions made machine room on top arrangements impossible. It was a solution confined to low rise buildings. However, over the last decade, the MRL elevator is being pitched as a total replacement to the MR elevator with many suppliers refusing to provide a MR alternative even for high rise buildings.
In these days the drum elevator again is an important alternative from the point of view of urban development, light weight and energy efficiency coupled with architectural future targets in the field of digitalization.
The great advantage of drum elevators is based on the full utilization of shaft space. We report on the intensive research and development of this new products. The proposed standards drew from materials gathered from eleven countries: This important work, with its detailed text, extensive bibliography, and 98 illustrations, provides unique insights into early elevator codes and regulations.
It also represents the first attempt to synthesize this diverse set of materials into a uniform set of international standards. Microswitches or proximity sensors are commonly used for brake monitoring. Most common reasons are contact deterioration or hysteresis fluctuations within production batches and temperature influence.
The system is extremely light and thin, with no impact on cabin weight and space, rendering traditional video screens unnecessary. Other industries can be a precursor for the lift industries. If we analyse the changes of the standard from the history up to today and find their causes, it allows us to make a prediction for the changes in the future.
Where are the upcoming challenges for the lift industry? Krogerus and Kalevi J.
Another data called as maintenance data is used to find time periods for creating class variables.Here is the gist of a question that I replied to in another forum. Q: Can someone advise a conversion method for phone number formats? I have (many!) phone numbers in multiple formats and I would like to convert them all to numbers for comparison.
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