摘要:
An accelerometer mechanically attached to a machine senses the machine rotor's unbalance and outputs an electrical signal which is indicative of the magnitude and position of the rotor unbalance. A tachometer generator's rotor is mechanically coupled to the machine rotor and outputs an electrical signal delineating the speed and rotational position (with respect to time) of the rotor. By physically indexing one of the tachometer generator rotor poles (north or south) to an index/mark on the engine rotor, the position of the mark at any instant in time is determined. The physical location of the unbalance is obtained by determining the phase relationship of the unbalance signal to that of the tachometer generator signal. This is accomplished by obtaining simultaneous "snapshots" of the two signals employing multiplexing techniques to alternately sample each signal. The signal is then recorded and later reduced by ground equipment. Phasing of the two signals can be visually determined either from the reduced signal or an electronic processor may be utilized to provide a real time measurement of the phasing. The angle between the rotor unbalance and the index/mark is the same as the phasing angle after correcting for any phase shifting due to electronics and rotor resonance.
摘要:
A computer-implemented system for managing the underwriting, quoting and binding by an insurance company of an excess casualty insurance policy for an insured having a primary insurance policy with a primary insurance limit amount. The system selects and stores at least one standard industrial classification code ("SIC code") associated with the insured and a primary carrier name or multiple carriers associated with the primary insurance policy. A plurality of SIC code records corresponding to a plurality of SIC codes are stored in a database. Each of the SIC code records are linked to underwriting guidelines established and filed by the insurance carrier. These criteria include guidelines related to minimum premiums, hazard rating, underwriting authority, and referral criteria. Primary insurance carrier public bureau rating records are also stored in the database. Each of the primary insurance carrier public bureau rating records includes a field for storing a rating code representing a financial stability rating associated with a primary insurance carrier. The system displays for the insurance carrier underwriter a plurality of candidate risk modifiers associated with the retrieved SIC code record, and for documenting and storing a selected risk modifier code and related underwriting criteria associated with the policy. The system develops the quotation using a detailed description of the insured's operation, the minimum premium amount information, the selected hazard code, the selected risk modifier code, primary insurance limits, and one or more attachment points.