48 results about "Variable source" patented technology

Computer system and method automatically generates a test source code for checking validity of an application written in an object oriented language. The application includes objects accessible through an interface implementing programming rules and object behavior rules. For each object, the invention extracts object methods and attributes of the object interface which are impacted by the object behavior rules and extracts the object identification. The invention fills the variable fields of a source code template with the extracted information. The template non variable source code is in conformance with the programming rules and implements a scenario for checking a set of object behavior rules; thus the filled template forms a generated test source code. For distributed applications, the specifications may be EJB or CORBA and the Test Generator uses templates for checking the life-cycle (creation, persistency, removal) of deployed objects.

An input shaft rotates at variable rotation rates and is driven by a variable source of energy or power such as by the propeller of a wind-driven electrical generator. The input shaft is connected to a clutch which is connected to an output shaft and which is operable to rotate the output shaft at a preselected or constant rotation rate. The clutch has a first rotor which electromagnetically interacts with a second rotor to create a torque to cause the second rotor to rotate. The interaction of the first rotor and the second rotor may be varied electrically or mechanically to vary the torque and in turn the rotation rate of the second shaft. The shaft is preferably connected to a synchronous generator; and the rotation rate of the output shaft is controlled so that the generator supplies power at an essentially constant rotation rate.

The invention discloses a source-tracing method of atmospheric pollutants for an industrial park. The method comprises the following steps: collecting observation data by monitoring points and judgingwhether the observation data is out of limit or not; screening areas according to observation data out of limits; and obtaining observation data obtained by screening and collected in the areas and performing back calculations on a model according to a source position estimation model; obtaining a result and verifying the result. The source-tracing method has the following advantages: concentration data collected by a monitoring station around a diffusion source park is utilized to estimate source intensity magnitude and concrete positions of diffusion sources; and additionally, the method can be suitable for scenarios with variable source intensity and wind field data.

An optical switch comprised of an artificial muscle activation material that is adhered longitudinally around an optical channel, such as an optical fiber or group of fibers, to cause the channel to undulate in 2-½ dimensions when the material is activated by a voltage source via electrodes on the surface of the artificial muscle activation material. The material can be applied to the optical channel in a series of longitudinal strips or as a jacket surrounding the channel. When activated by a voltage source, be it a constant source or a variable source varying in amplitude, frequency or polarity, the artificial muscle material bends, causing the optical channel to also bend. The artificial muscle activation material can be formed into an optical channel itself when formed into a channel and cladded to have internal reflection.

The invention discloses an automatic control algorithm for carrying out feed-forward control based on an artificial neural network and feeding vitriol in tap water by coagulation on the basis of fuzzy feedback control, comprising the following steps of: learning the process parameters of vitriol-feeding control by the artificial neural network, identifying the internal corresponding relationships in the system parameters, thus predicting the control value of the detection source water parameters of a core; subsequently correcting the prediction value by a method of fuzzy control feedback; and finally obtaining a vitriol-feeding control quantity meeting the requirement to control the operation of a metering pump, thus completing the full process of vitriol-feeding control. The algorithm can ensure the safety production and stable operation of water industries under the condition of variable source water references and achieves the objects of saving energy, reducing consumption, downsizing staffs and improving efficiency.

A sense amplifier for use in sensing a signal in an integrated circuit comprises an amplifier portion and an output portion. The amplifier portion comprises a gated diode having a gate terminal. The output portion comprises an output transistor in signal communication with the gate terminal of the gated diode and having a source terminal. A variable source voltage acts on the source terminal of the output transistor when the sense amplifier is in operation. The variable source voltage is temporarily altered when the sense amplifier is actively sensing the signal in the integrated circuit.

A dynamically variable source resistance is provided for each sector of a NOR-type Flash memory device. The variable source resistance of a given sector is set to a relatively low value (i.e., close to zero) during read operations. The variable source resistance is set to a relatively high impedance value (i.e., close to being an open circuit) during flash erase operations. The variable source resistance is set to a first intermediate resistance value at least during soft-programming where the first intermediate resistance value is one that raises VS and thus drives VGS below local threshold even for over-erased transistors of the sector that have a VGoff de-assertion voltage applied to their control gates for purpose of turning those transistors off. In one embodiment, the variable source resistance is set to a second intermediate resistance value during a testing mode that tests the extent to which the corresponding sector has been over-erased. The results of the testing mode are then used to intelligently optimize the number of transistors that are simultaneously soft-programmed in that sector during each Vt compaction cycle.

The invention discloses a flame surface / progress variable model-based supersonic turbulent combustion flow calculation method, and belongs to the field of computational fluid dynamics (CFD). The method comprises the steps of establishing a flame surface database; performing RANS solving by using the flame surface database; and building a compressible scale model of a progress variable source item. In view of a flame surface / progress variable turbulent combustion model with self-ignition and flameout phenomena, a novel compressible scale model with a definite physical meaning is built for the progress variable source item, so that a corrected flame surface / progress variable model can accurately describe self-ignition and flameout processes; and the high Mach number effect of flow is effectively considered, so that the simulation precision of supersonic turbulent combustion flow is greatly improved. The technology is low in realization difficulty, can be used as compressible correction, and only needs to be added as a sub-program; and an original program is slightly modified during CFD program coupling calculation.

A system has a variable displacement pump that supplies pressurized fluid to power a plurality of hydraulic functions. Each hydraulic function has a control valve with a variable source orifice controlling fluid flow between the pump and a flow summation node, and a variable metering orifice controlling fluid flow between the flow summation node and a hydraulic actuator. Variable bypass orifices in the control valves are connected in series between the flow summation node and a tank. As the metering orifice in a control valve enlarges, the source orifice enlarges and the bypass orifice shrinks. This alters pressure at the flow summation node, which is used to control the output of the pump. Components are provided to give selected hydraulic functions different levels of priority with respect to consuming fluid flow from the pump.

An input shaft rotates at variable rotation rates and is driven by a variable source of energy or power such as by the propeller of a wind-driven electrical generator. The input shaft is connected to a clutch which is connected to an output shaft and which is operable to rotate the output shaft at a preselected or constant rotation rate. The clutch has a first rotor which electromagnetically interacts with a second rotor to create a torque to cause the second rotor to rotate. The interaction of the first rotor and the second rotor may be varied electrically or mechanically to vary the torque and in turn the rotation rate of the second shaft. The shaft is preferably connected to a synchronous generator; and the rotation rate of the output shaft is controlled so that the generator supplies power at an essentially constant rotation rate.

A signal conditioning circuit dynamically adjusts a compression ratio, so as to compress a signal and avoid limiting to the extent possible, thereby avoiding distorting the signal by clipping. An input signal is applied to the input of a programmed gain amplifier (PGA) or other amplifier whose gain can be controlled by a gain control signal. The input or the output of the PGA is sampled by a level detector to produce a level signal that represents the level of the signal. A variable source produces a variable threshold signal. A comparator compares the level signal to the variable threshold signal to produce a difference signal. Control logic generates the gain control signal from the difference signal. When the level signal exceeds the threshold signal, the control logic alters the gain control signal to reduce the gain of the PGA, and when the level signal is less than the threshold signal, the control logic alters the gain control signal to increase the gain of the PGA. The threshold signal varies as a function of the gain control signal.

The invention discloses a wired network and wireless network combined dispatching method and system and related devices. The wired network and wireless network combined dispatching method and system and the related devices are used for ensuring real-time performance and certainty of communication between networks. The method comprises the steps: according to wireless node information sent by a wireless end information dispatcher and configuration information sent by a wired end information dispatcher, building a corresponding map of a wireless node, wherein the corresponding map comprises wireless node address information, wireless node output variable information, output variable destination address information, wireless node input variable information and input variable source address information of the wireless node; receiving wired message information sent by the wired end information dispatcher, wherein the wired message information comprises wireless node address information, wireless node input variable information and input variable source address information; updating the corresponding map in real time according to the wired message information so as to enable the wireless end information dispatcher to send the latest wireless node input variable information and the latest input variable source address information to the wireless node corresponding to the wireless node address information through reading of the corresponding map.

A method and mechanism for eliminating one of the magnetic circuits in a conventional two motor Stirling cryocooler. The inventive cooler is a Stirling cycle cryogenic cooler with a magnetic circuit for generating a field of magnetic flux in two separate magnetic gaps; a first coil disposed in the flux field of one gap; and a second coil disposed in the flux field of the second gap. The second coil is mounted for independent movement relative to the first coil. In a specific embodiment, the first coil is a compressor coil and the second coil is a displacer coil. The coils are energized with first and second variable sources of electrical energy in response to signals from a controller.

The invention provides a pulse-combustion type feed-forward optimal control method for fuel gas and combustion-supporting gas pressure. The method includes the steps that step A, two control signals are obtained, wherein the first control signal is processed to be a digital signal by polynomial calculation through a PID adjustor to serve as a feedback variable source signal, and the second control signal serves as a feed-forward signal after temperature compensation is performed on the percentage of the accumulatively added fuel gas or the combustion-supporting gas, accounting for the total flow, of a combustion nozzle in an open state; step B, the first control signal and the second control signal are added to obtain a feed-forward optimal control signal. Fuel consumption is reduced, oxidation burning losses of a casting blank are reduced, the utilization rate of fuel is increased, heating quality of the casting blank is improved, and uniformity of heating temperature is improved. The unit consumption of coal gas of a large-scale plate blank heating furnace is reduced to 1.06GJ / t. The temperature difference between the upper surface and the lower surface of a plate blank out of the furnace is smaller than or equal to 10 DEG C. The temperature difference between the middle and the two ends in the length direction of the casting blank is smaller than or equal to 20 DEG C, and therefore the heating quality of the casting blank is stable and reliable.

The invention relates to the field of analogue integrated circuits, and discloses a low-power-consumption variable gain amplifier. The low-power-consumption variable gain amplifier comprises a differential common-source amplification unit, variable load resistor arrays Rd1-Rdn-1, digital control switch arrays A1-An-1, variable current source arrays I1-In-1, variable-source feedback resistor arrays Rs1-Rsn-1, switch arrays K1-Kn-1, a fixed current source I0, a fixed current source ISS, a fixed resistor Rd0 and a fixed resistor Rs0, wherein effective resistance values in the variable load resistor arrays Rd1-Rdn-1 are controlled through the digital control switch arrays A1-An-1, current sources in the variable current source arrays I1-In-1 are controlled through the digital control switch arrays, effective resistance values in the variable-source feedback resistor arrays Rs1-Rsn-1 are controlled through the switch arrays K1-Kn-1, and the output common mode voltage of the variable gain amplifier meets the following conditional equation of . By means of the design mode, the common mode is stably output, a common mode feedback circuit is removed at the same time, and accordingly the complexity and power consumption of the circuits are reduced.

The invention provides a mechanism for an airtight airfoil with variable cross section that can lower its average density below that of the medium in which it is used, providing additional bouyancy and reducing the effective weight of any craft to which it may be affixed. The outside of the airfoil is formed by a sheet of material that is impermeable to the medium in which the foil is used. This sheet is affixed to several points on an internal expandable frame. The cross-sectional perimeter of the frame remains constant throughout the expansion of the frame, minimizing wear on the enclosing sheet of material. Because the length of the sheet remains constant through the expansion process, the sheet need not be elastic, and may even be replaced by rigid plates of material. By providing a variable source of buoyancy, this foil enables lower speed and lower power applications than regular foils. By providing a smoothly variable airfoil cross-section, this foil enables higher performance in a wider variety of aerodynamic conditions.

A method and apparatus for efficiently exhausting harmful vapors and fumes from a substrate processing chamber is described. The processing chamber includes a lower volume configured as a liquid atmosphere, and an upper volume configured as a gaseous atmosphere to at least partially contain vapors or fumes above the liquid. The apparatus includes a lid member configured to seal the processing chamber and a lid assembly adapted to provide processing liquids while exhausting the vapors or fumes from the processing chamber. Switchable valves and / or a variable source of negative pressure may be coupled to the lid assembly to provide a controlled exhaust. A method of preventing or minimizing the escape of fumes or vapors is also described.

The invention discloses a physical unclonable function circuit structure based on multiple bunching delay. The physical unclonable function circuit structure includes a variable-source multiple bunching delay module, a fuzzy extractor module and a logging and recurrence module; a multiple bunching delay unit and a fuzzy extractor which is based on linear codes and a hash function family are adopted, and physical unclonable functions which are high in stability and uniqueness are achieved.

A power amplifier circuit including a first transistor, a second transistor, and a power control circuit. The first transistor includes a first input and a first output. The second transistor includes a second input coupled in series with the first output of the first transistor. The input circuit is coupled to the second input of the second transistor. The control circuit includes a time delay circuit and a variable source.

A pipe coupling for joining two electrolyte-conveying pipes of electrochemically dissimilar metals and inhibiting galvanic corrosion resulting from the dissimilarity. A tubular pipe coupling has a pair of axially spaced protection electrodes mounted to its interior wall in electrical contact with the electrolyte. A control electrode is also mounted to the interior wall of the tubular pipe coupling between one of the pipes and the pair of protection electrodes. A current sensing circuit is connected to sense the galvanic current through the control electrode. A controllably variable source of electrical current is connected to vary the current through the protection electrodes. A negative feedback control circuit receives the sensed current as a feedback signal and controls the variable source to increase the electrical current through the protection electrodes and the electrolyte so that the sensed current is reduced thereby reducing the galvanic current in the electrolyte between the pipes. Preferably, the feedback control system has a reference input representing zero current through the control electrode and therefore drives the protection current to a magnitude that nulls the control electrode current.

The invention belongs to the technical field of integrated amplifiers, in particular relates to a frequency compensation circuit applicable to a high speed integrated amplifier. The frequency compensation circuit is composed of a gain variable source follower and a pair of compensation capacitors which are inserted between the inphase input terminal and output terminal of a fully differential primary amplifier loaded by a resistance. The circuit can utilize a controllable multiplying negative Miller capacitance to offset the positive Miller capacitance effect produced by a CMOS (complementary metal oxide semiconductor) transistor source drain parasitic capacitance Cgd, and a small load effect is produced to a primary circuit, thus obviously improving bandwidth. Meanwhile an external control voltage is used for regulating an equivalent negative Miller capacitance, thus eliminating frequency response overshoot probably produced by the circuit at different power supply voltages or different working temperatures and ensuring frequency band and operation of the circuit to be stable.

Systems and methods are provided for variable source rate sampling in connection with image rendering, which accumulate and resolve over all samples forward mapped to each pixel bin. In accordance with the invention, the textured surface to be rendered is sampled, or oversampled, at a variable rate that reflects variations in frequency among different regions, taking into account any transformation that will be applied to the surface prior to rendering and the view parameters of the display device, thus ensuring that each bin of the rendering process receives at least a predetermined minimum number of samples. In one embodiment, the sampling rate is variably set such that each bin is assured to have at least one sample point. In another embodiment, a tiling approach to division of the surface is utilized. In accordance with the architecture provided, the sample points of the surface are forward mapped to sample squares, other regions, of a rendering device, taking into account any transformations applied to the surface and the view parameters of the rendering device, such that each bin receives at least the predetermined minimum number of samples. A filter determines the value(s) to assign to each pixel based upon accumulation and resolution of all of the sample points that fall within the pixel bin(s), rather than assigning a value by selecting only the point sample that corresponds to the center of the pixel. Gaps or holes left by conventional forward-mapping techniques are eliminated by oversampling the source(s), and interpolated points are generated at a higher rate than the original source signal(s) to adequately cover the destination bins. A pixel, or sub-pixel, binning approach is used that accumulates and resolves over all samples, and performs particularly well compared to prior architectures in areas that have higher frequency content, solving the minification antialiasing problem and producing a high quality result. Anisotropic filtering is handled simply with the forward mapping approach by filtering over all samples that naturally accumulate after the forward map, and via variable control of the number of samples forward mapped to the bins. A variety of image processing applications are contemplated wherein variable rate source sampling, and accumulation and resolution of forward mapped point samples can be applied, ranging from 3-D graphics applications to applications wherein images recorded in a recording / storage environment are mapped to the arbitrary requirements of a display environment.