Abstract: A system and method for measuring the radial runout of a shaft, rotatably supported on a standard rest, includes at least a first journal surface sensing assembly, a second journal surface sensing assembly, and a test surface sensing assembly which sense the radial position of the first journal surface, the second journal surface, and a test portion of the shaft, respectively, during rotation of the shaft. A transmitter of each surface sensing assembly transmits a runout signal which is received by a receiver of a computer. Within the computer, the runout signal from the test surface sensing assembly is adjusted with the runout signals from the first and second journal surface sensing assemblies to factor out deflection of the shaft caused by the standard rest and the shaft runout is computed and plotted using the normalized runout data.

Abstract: A method of properly correcting a base line. A concept of flexibility of a base line is introduced as an input index and a gravitation is presumed between the base line and signal data which is measured, thereby constructing a method of correcting the base line which changes gentler than a change in signal with respect to time in a peak area and which is sensitive to an area where a value of the signal data is small. A base line like a natural and smooth curve which isn't easily influenced by a local change in signal such as noise or the like can be set by an input of the flexibility.

Abstract: A system for improving the accuracy of location coordinate determined in a survey of a chosen region. A grid of spaced apart points is imposed on the region, and a set of survey control points is provided. A “near set” of nearest survey control points is associated with each grid point, and the number of elements in this new set may vary with the grid point. Definition of a near set can vary from one grid point to the next. For each grid point, a transformation T from a first coordinate system to a second coordinate system is determined that minimizes a collective difference between coordinates of each survey control point in the near set and the corresponding coordinates of that survey control point under the transformation T. For one, two or three coordinates of each grid point, the difference(s) between the coordinate(s) of the grid point in the near set and the corresponding coordinate(s) of that grid point under the transformation T are computed.

Abstract: Maintenance due times of components of a machine are determined according to the status of user-performed in-house maintenance and according to the occurrence of abnormalities during machine operation. A subtraction point (20 points) associated with an abnormality (overheating) detected during machine operation is subtracted from the score (80 points) of a corresponding component (engine) in the machine. An addition point (50 points) associated with the type of maintenance (overhaul performed by in-house maintenance) indicated in maintenance information is added to the score (80 points). Thus, at the time where the value resulting from subtractions from and additions to the score for that component (engine) reaches a prescribed value (10 points) indicating maintenance due time, it is determined that the maintenance due time for that component (engine) has been reached.

Abstract: A portable vibration monitoring probe is provided which comprises a housing, a probe and a transducer is provided. An analog to digital converter is coupled to the transducer output. The vibration monitor comprises an interface configured to transmit digital data comprising vibration parameters derived from the digitized analog signal to processing circuitry external to the housing. In some embodiments of the present invention, vibration monitors may be configured to store information in a memory located near the measuring point.

Abstract: A diver's computer including detectors for measurement and determination of diving parameters, a processor for processing the measured and determined data, and memory functions for storage of the measured and collected data. According to the invention, the diver's computer is provided with a detachable memory unit in which the measured and collected data have been arranged to be stored and which memory unit can be connected to a personal computer or equivalent for analyzing the data. Of the measured and collected data, preferably at least the data on the diving depth, diving time and starting time of the dive, the data on the pressure in the bottle, the situation of residual nitrogen, and possible violations by the diver are preferably stored in the detachable memory unit. The detachable memory unit is preferably user-specific in view of storage of personal data.

Abstract: An automated system and method for testing a sensor by evaluating the output thereof with respect to a known target. The advantageous method includes the step of acquiring an output signal from the sensor in response to a known target, said output including signature signal S, random noise N.sub.R and fixed pattern noise N.sub.FP. Next, the sensor output signal is processed to provide a first signal which includes essentially signature signal S and fixed pattern noise N.sub.FP, a second signal which includes essentially random noise N.sub.R and a third signal which includes essentially fixed pattern noise N.sub.FP. The third signal is adaptively filtered to provide a filtered signal fixed pattern noise signal N'.sub.FP. The filtered signal N'.sub.FP is subtracted from the first signal to extract a signature S. In a particular embodiment, the signature is processed to acquire a modulation transfer function and a signal peak baseline therefrom.