36 results about "Nominal condition" patented technology

A mobility assessment detects abnormalities in motion using a stagger algorithm. The detected abnormalities are compared to known norms for a particular test to determine if the abnormalities are normal or not. The comparison can be made for abnormalities associated with different diseases and illnesses to classify whether or not the condition exists and its phase. The results may be used to generate a treatment regime.

A method of simulating parametric variations in an integrated circuit (IC) includes: specifying an IC model, wherein the IC model includes one or more parameters for variation about a nominal condition; calculating parametric perturbations about the nominal condition; and saving one or more values for the parametric perturbations in a computer-readable medium. Calculating the parametric perturbations includes: simulating the nominal condition for the IC; determining perturbation values for the IC model about the nominal conditions, wherein the perturbation values include linear time-varying matrices and parametric right-hand sides, determining a performance metric for the IC and a performance sampling vector for sampling the performance metric about the nominal condition from the perturbation values; and determining voltage-sensitivity values and performance-sensitivity values from the perturbation values and the performance-sampling vector.

A dome assembly (50) adapted for use with a missile (32) having a longitudinal axis (42) parallel to a thrust vector thereof. The inventive dome (50) includes a crystal (30, 50) having a crystallographic structure that includes a plurality of planes (12, 14, 16), one of said planes (14) being more susceptible to failure than one or more of the other planes (12, 16). A surface around a missile sensor provides a place for mounting the crystal (30, 50) so that said plane susceptible to failure (14) faces approximately opposite to that of a positive velocity vector (34) of said missile (32). In a more specific embodiment, the crystal (30, 50) is a sapphire crystal (30, 50) having a crystallographic structure that includes positive n-planes (12), positive r-planes (14), and a c-plane (16). By design at nominal conditions, an r-plane (14) is approximately bisected by a plane formed by the normal of the c-plane (16) and a wind flow vector (36) parallel to a thrust vector of said missile (32). A turntable (not shown) orients the sensor dome (50) so that a first r-plane (14) faces leeward of impinging airflow (36) corresponding to the wind flow vector (36). An r-plane normal (38) of a second r-plane forms an angle of approximately 60 degrees with respect to impinging airflow (36) that is approximately parallel to the thrust vector of the missile (32). The turntable includes a motor (not shown) for strategically orienting the lattice planes (12, 14, 16) of the dome (50) so as to maximize the strength of the dome (50) with respect to applied stresses.

A biosensor assembly implantable in a subject's body for monitoring a medical condition of the subject includes a housing, one or more biosensors, a reference-data storage device for storing reference data corresponding to a normal condition of the subject, a transmitter, a battery, and a processor designed: (a) to compare the measured data, as it is sensed by the biosensors, with the reference data stored in said reference-data storage device; (b) to determine whether the measured data indicates a normal medical condition or an abnormal medical condition in the subject: and (c) upon determining that the measured data indicates an abnormal condition, to actuate the transmitter to transmit an alarm signal to a central station, to the subject, and/or to a caregiver

A protection method may prevent a load-mismatch-induced failure in solid-state power amplifiers. In an RF power amplifier, the load voltage standing-wave ratio results in very high voltage peaks at the collector of the final stage and may eventually lead to permanent failure of the power transistor due to avalanche breakdown. The method avoids breakdown by attenuating the input power to the final stage during overvoltage conditions, thus limiting the output collector swing. This is accomplished by a feedback control system, which detects the peak voltage at the output collector node and clamps its value to a given threshold by varying the circuit gain. Indeed, the control loop is unlocked in the nominal condition and it acts when an output mismatching condition is detected. A control circuit also allows a supply-independent collector-clamping threshold to be accurately set.

A system and method for fault detection is provided. The fault detection system provides the ability to detect symptoms of fault in turbine engines and other mechanical systems that have nonlinear relationships between two or more variables. The fault detection system uses a neural network to perform feature extraction from data for representation of faulty or normal conditions. The values of extracted features, referred to herein as scores, are then used to determine the likelihood of fault in the system. Specifically, the lower order scores, referred to herein as “approximate null space” scores can be classified into one or more clusters, where some clusters represent types of faults in the turbine engine. Classification based on the approximate null space scores provides the ability to classify faulty or nominal conditions that could not be reliably classified using higher order scores.

The described method and system provide an early notification to emergency responders regarding a non-nominal condition associated with a vehicle involved in a collision. The system provides a short range wireless system controller in communication with a battery controller. The short range wireless system controller is further in communication with a communications device associated with an emergency responder via broadcast over a short range wireless RF network. If battery physical parameters indicate that the battery has suffered damage rendering the vehicle inoperable, this battery damage information is broadcast over the short range wireless RF network to the communications device associated with the emergency responder. In this way, the emergency responder can quickly aid incident victims without time lost in determining whether or not the high voltage vehicle battery is in a nominal state after the crash.

The invention relates to an open-circuit voltage-ampere-hour integral SOC estimation method based on temperature correction and belongs to the technical field of battery management. The method comprises the steps that 1, a power battery to be detected is selected to obtain technical parameters of the battery, it is determined whether the battery is provided with a TMS or not, if yes, the battery works under the nominal condition, and if not, the battery works under full condition; 2, an SOC-OCV mapping model based on temperature correction is established, and initial values of an SOC under thenominal condition and the full condition are obtained; 3, a temperature model about total capacity, releasable capacity loss and coulombic efficiency is established, an ampere-hour integral method isused for estimating the SOC under the nominal condition and the full condition; 4, according to the steps 2 and 3, the SOC estimation method under different working conditions is established by adopting an OCV method based on temperature correction and combining with ampere-hour integral, and the SOC under the nominal condition and the full condition are estimated. By adopting the method, the problem of accurate estimation of battery SOC in a wide temperature range is solved.

The present invention relates to a structural element for a bottle closure having means for showing a first use in nominal conditions. This structural element can be made from components such as a pouring dispenser or a frame. This structural element is characterised by the use of two components which are linked such that the attachment between both disappears after the first use in nominal conditions when said structural element is mounted in the operating mode on the bottle. The first use in nominal conditions requires removing one of the components and it cannot be put back in its original position, restoring its also original attachment.

The invention discloses a capacity measuring device for a four-way reversing valve. The capacity measuring device comprises an air-conditioning refrigerating and heating system simulation part, an air-conditioning nominal condition adjusting part and an air-conditioning system parameter measurement part. According to the capacity measuring device, the air-conditioning refrigerating and heating system simulation part is used for simulating system compositions, in an actual air-conditioning system, of the four-way reversing valve, the air-conditioning nominal condition adjusting part is used for adjusting all component parts of the refrigerating and heating system simulation part to an air-conditioning nominal condition, and the air-conditioning system parameter measurement part is used for measuring all temperature and pressure parameters needed by calculating a capacity value of the measured four-way reversing valve. Accordingly, the capacity measuring device provides a testing platform conforming to standard requirements for measuring the capacity of the four-way reversing valve.

Methods and systems for fabricating a composite structure are provided. The method includes receiving data representing a portion of a surface of the structure, measuring a surface of the structure, the measured surface corresponding to the received surface wherein the measuring is performed with the structure in a flexed condition, and determining a difference in a first and a second direction between the measured surface and the received surface at areas that correspond to the measured surface. The method also includes determining a difference in a third direction, transmitting to a morphing algorithm the determined differences in the first, second, and third directions, and determining a position in the first, second, and third directions of a point on the surface in the flexed condition that corresponds to a respective point on the received surface when the structure is placed in the nominal condition.

The fuel cell supplies power to a load under nominal conditions. The method for using the fuel cell comprises at least one regeneration step of the performances of the cell by temporarily lowering its temperature below the nominal operating temperature. The regeneration step, performed during a preset time, can be triggered periodically or when the voltage at the terminals of the cell or the cell temperature is lower than a threshold. The performances of the cell, in particular its voltage, can thereby be maintained substantially constant during long periods of use.

A user interface for use together with an electrostimulation system, the user interface having a communication module and fasteners for fastening the communication module to the back of the hand of a person training with the system. The communication module has at one display for displaying an actual or a nominal condition of electrostimulation and/or an input device for starting or terminating electrostimulation and/or for setting parameters of the electrostimulation.

A method for controlling a valve-control system for variable-lift actuation of the valves of an internal-combustion engine, wherein the valve-control system comprises, for each cylinder of the engine, a solenoid valve for controlling the flow of a hydraulic fluid in the system, and means configured for determining a real temperature value of said hydraulic fluid.

The method includes:

• • determining a deviation of performance of the solenoid valves due to a degradation of the characteristics of said hydraulic fluid with respect to nominal values thereof; and
  • substituting for said real temperature value an equivalent temperature value consisting of a temperature value at which the hydraulic fluid having nominal characteristics would produce performance of the solenoid valves corresponding to the performance resulting from the aforesaid deviation so that each solenoid valve is governed as a function of said equivalent temperature value.