191 results about "Operating limit" patented technology

The present disclosure provides for distributed resource scheduling performed by an advanced resource scheduling (ARS) module implemented on a distributed grid management (DGM) server in a power system. The ARS module is configured to automatically generate a resource schedule for controllable distributed energy resources (e.g., resources that are remotely controllable by DGM server and ARS module) in a distribution network of the power system, such as power generation resources and energy storage resources, to provide power in a cost-effective (e.g., optimal) manner. The ARS module is configured to take into account the operating limits of the distributed energy resources (DERs), the cost curves of the DERs, the system load demand, and other operating constraints to determine the most economical operating plan for the DERs, using an optimization technique such as the particle swarm optimization (PSO) algorithm.

Disclosed is a unique fuel and air premixing system for a gas turbine catalytic combustion system. The mixer utilizes a multi-channel counter-rotating swirler with aerodynamically shaped fuel pegs located upstream of the swirler. The premixing system provides the downstream catalyst with a fuel-air mixture sufficiently uniform for proper catalyst operation and wide operating limits. Features have been incorporated in the system to make it resistant to flameholding.

A method and system for controlling the operation of a vehicle is disclosed that includes a radio frequency transponder and a vehicle configured to respond to data stored in the transponder by preventing or disabling operation of the vehicle under certain conditions indicated by data stored in the transponder. A communications controller receives the data from the transponder, then monitors the operation of the vehicle to make sure it is operated within the limits that are stored in the transponder. By communicating with other controllers on the vehicle that are in charge of other subsystems, it receives information relating to whether the operational limits of the vehicle have been approached or exceeded, and takes appropriate action in that event, the action may include not enabling the vehicle initially, or disabling the vehicle, or causing an operator display to indicate which limit has been exceeded or approached.

A method for a short-term prediction of future ship motion in open water to furnish visual cueing information that can be remotely presented to a pilot during an aircraft landing is described. Two sets of samples of the sea surface geometry along a radial azimuth line from a ship as a function of elevation of a sensor are first acquired. These are compensated to remove the components due to the ship's motion. Two wave traces are then separately derived in Cartesian format from the two sets of acquired samples. These wave traces are subjected to a Fast Fourier Transform to detect the amplitudes and phases of the individual wavelength components. The direction of the wavelength components is determined using a measure of their phase change in the scan direction during the time interval between the two scans together with their measured wavelength. The amplitude, direction and phase of each component is utilized together with the known motion characteristics of the moving ship in order to derive a short-term prediction of future ship motion in the time domain. A quiescent period of the ship motion is located by comparing the short-term prediction with the pre-defined operating limit criteria. Finally, a message signal is transmitted to the pilot of the aircraft indicating Time-to-Land and the duration of the quiescent period.

A system for determining whether a centrifugal pump assembly is degraded as operating outside of acceptable operating limits and includes a processor adapted by software to perform the steps of automatically characterizing the pump characteristics at a predetermined operating level and testing for degradation using the automatically acquired pump characteristics.

An electric vehicle includes a controller configured to receive sensor feedback from a high voltage storage device and from a low voltage storage device, compare the sensor feedback to operating limits of the respective high and low voltage storage device, determine, based on the comparison a total charging current to the high voltage storage device and to the low voltage storage device and a power split factor of the total charging current to the high voltage device and to the low voltage device, and regulate the total power to the low voltage storage device and the high voltage storage device based on the determination.

A control for a linear compressor energises the linear motor in harmony with the present natural frequency of the compressor. The controller monitors the present operating frequency and compares the frequency with one or more outer limit thresholds. The control may remove power from the linear motor if the running frequency drops below a lower threshold. The control may reduce power to the linear motor if the running frequency rises above an upper threshold. The control uses compressor running frequency to operate the comperssor within safe operating limits.

Systems for use with a medical device for reducing medication errors are provided. In one aspect, a system includes a medical device that is configurable with operating limit parameters for providing medication to a patient, and a limiting system. The limiting system includes a memory that includes patient-specific information for the patient and a database includes acceptable operating parameters for providing the medication to the patient using the medical device, and a processor. The processor is configured to compare the acceptable operating parameters with the patient-specific information, and provide a modification of the operating limit parameters for providing the medication to the patient based on the comparison of the acceptable operating parameters with the patient-specific information. Methods and machine-readable media are also provided.

A power situation indicator configured to provide power information in a rotorcraft is presented. The power situation indicator includes a detection unit configured to detect a current value of each of a plurality of control parameters, each of the plurality of control parameters including a pre-determined operating limit; a calculation unit configured to normalize on a common power scale (a) the current value and (b) the pre-determined operating limit of each of the plurality of control parameters, and a display unit configured to dynamically display on the common power scale a first moveable indicator and a second moveable indicator. The first moveable indicator is driven by one of the plurality of control parameters having the highest normalized current value and the second moveable indicator is driven by one of the plurality of control parameters having its normalized current value that is the closest to its corresponding normalized pre-determined operating limit.

A level shifter for low voltage operation includes two level shifting stages. The first stage shifts the input voltage level to an intermediate voltage level, and the second stage shifts the intermediate voltage level to an output voltage level. This two-stage arrangement allows the level shifter to function for very low input voltages, and enables functionality across a wide range of output voltages. The first stage is designed to be compatible with very low input voltages and the intermediate voltage level is chosen to be within the safe operating limits of the first stage. The intermediate voltage level is also high enough to drive the high voltage devices of the second stage. This level shifter can be used where multiple output voltage levels are required depending on the particular application or operating mode.

The invention discloses an expressway microclimate traffic early warning method based on a fuzzy neural network. The expressway microclimate traffic early warning method comprises the following steps of distributing traffic flow and microclimate monitoring points; defining a traffic controller of the fuzzy neural network; training the traffic controller of the fuzzy neural network; using the optimal traffic controller of the fuzzy neural network to generate traffic safety travelling parameters; and issuing traffic control information. The expressway microclimate traffic early warning method uses the fuzzy neural network and issues vehicle operating limiting-velocity value, distance limiting value and overtaking limitation and lane changing limitation measures through comprehensive detection of meteorological parameters such as precipitation, snow quantity, temperature and visibility along the line of an expressway. The method is used in the expressway to improve travelling safety under severe weather conditions.

Systems for use with a medical device for reducing medication errors are provided. In one aspect, a system includes a medical device that is configurable with operating limit parameters for providing medication to a patient, and a limiting system. The limiting system includes a memory that includes patient-specific information for the patient and a database includes acceptable operating parameters for providing the medication to the patient using the medical device, and a processor. The processor is configured to compare the acceptable operating parameters with the patient-specific information, and provide a modification of the operating limit parameters for providing the medication to the patient based on the comparison of the acceptable operating parameters with the patient-specific information. Methods and machine-readable media are also provided.

Methods and systems for operating a semiconductor device (e.g., a microprocessor) are described. The microprocessor is initially operated at a voltage and frequency that would be within operating limits at any device temperature. Using models that relate device temperature, operating limits and power consumption with voltage and frequency, the amount of supply voltage and a new operating frequency can be selected. The models are periodically consulted thereafter to continue adjusting the supply voltage and operating frequency, so that the microprocessor is caused to operate at very close to its capacity, in particular in those instances when, for example, processor-intensive instructions are being executed.