摘要:
An efficient parallel event simulation method is implemented by simulating blocks of M edge events, where M is approximately equal to e logeN, and N being the number of interconnected processing elements. Following a simulation iteration, each processing element shares information with adjacent processing elements that relates to events that the processing elements simulated which may affect the simulation of events at the neighbor processing elements. When the communication reveals that the information that is shared by a neighbor processing elements is different from the information that the processing element assumed, then the arriving information is kept and the simulation process is repeated. In executing the repeated simulations of a block, the same random variable values are employed. When all of the processing elements find that the arriving shared information is the same as the information already known to the receiving processing element, simulation of the block ends. A new simulation floor is ascertained, and another block of event is simulated.
摘要:
The present invention is related to a method for estimating power consumption and noise levels of an integrated circuit which is composed of logic gates connected in the form of a plurality of stages. (1) At the outset, output signal waveforms and occurrence probabilities thereof at the first stage of the logic gates are calculated by the use of signal waveforms and occurrence probabilities thereof at primary input terminals of the integrated circuit; (2) next, output signal waveforms and occurrence probabilities thereof at the second stage of the logic gates are calculated by the use of the output signal waveform and the occurrence probability thereof at the primary input terminals and the output signal waveform and the occurrence probability thereof at the first stage of the logic gates; and (3) then, output signal waveforms and occurrence probabilities thereof at the n-th stage (n is a natural number) of the logic gates are calculated by the use of the output signal waveform and the occurrence probability thereof at the primary input terminals and the output signal waveform and the occurrence probability thereof at the (n-1)th stage of the logic gates. Thereby, types of the respective elementary waveforms, occurrence probabilities and signal correlations are calculated relating to signals located on each wiring of each stage inside of the integrated circuit and occurring within a predetermined time period.
摘要:
The invention relates to a helicopter, comprising a tail jib (12), at least one distance sensor (16.1) attached to the tail jib (12) for capturing a distance (A) from an object (18) that may be present in a surrounding area of the tail jib (12), and an electric evaluation unit (20), which is connected to the distance sensors (16) and equipped to calculate a position of the object (18) relative to the helicopter (10). According to the invention, a collision avoidance apparatus is provided, which is designed to avoid a collision of a person with the tail jib (12).
摘要:
Disclosed are techniques used in connection with determining a health indicator (HI) of a component, such as that of an aircraft component. The HI is determined using condition indicators (CIs) which parameterize characteristics about a component minimizing possibility of a false alarm. Different algorithms are disclosed which may be used in determining one or more CIs. The HI may be determined using a normalized CI value. Techniques are also described in connection with selecting particular CIs that provide for maximizing separation between HI classifications. Given a particular HI at a point in time for a component, techniques are described for predicting a future state or health of the component using the Kalmán filter. Techniques are described for estimating data values as an alternative to performing data acquisitions, as may be used when there is no pre-existing data.