Abstract: The present invention provides a cryostat comprising a cryogen vessel (1), a thermal radiation shield (2), and a sleeve (5) for accommodating a cryogenic refrigerator. Also provided is a first thermal contact for thermally and mechanically connecting a first stage of a cryogenic refrigerator to the radiation shield for cooling thereof. A secondary recondensing chamber is provided (8) for accommodating a second stage of a cryogenic refrigerator, and means (10; 24) are provided for thermally connecting the secondary recondensing chamber to a recondensing surface (11a; 44) exposed to the interior of the cryogen vessel. The cryostat further comprises a pressure control arrangement (100) for controlling the pressure of a gas within the secondary recondensing chamber.

Abstract: A real-time monitoring system that monitors various aspects of the operation of a refrigerant-cycle system is described. In one embodiment, the system includes a processor that measures power provided to the refrigerant-cycle system and that gathers data from one or more sensors and uses the sensor data to calculate a figure of merit related to the efficiency of the system. In one embodiment, the sensors include one or more of the following sensors: a suction line temperature sensor, a suction line pressure sensor, a suction line flow sensor, a hot gas line temperature sensor, a hot gas line pressure sensor, a hot gas line flow sensor, a liquid line temperature sensor, a liquid line pressure sensor, a liquid line flow sensor. In one embodiment, the sensors include one or more of an evaporator air temperature input sensor, an evaporator air temperature output sensor, an evaporator air flow sensor, an evaporator air humidity sensor, and a differential pressure sensor.

Abstract: A printer type paper money binding apparatus can print bundle-of-paper money information, such as a logo, the date, the money unit and the amount of money, on the binding strip, which is used to bind a bundle of paper money. A printer type paper money binding system capable of authenticating an operator and the operation method thereof can prevent an unauthorized operator from performing a printing and binding operation, thereby ensuring security in the printing and binding operation.

Abstract: A patient support including a pressure adjustable mattress system. The pressure adjustable mattress system includes a support surface and a controller to control the pressure of the support surface.

Abstract: A steam generator and a controlling method thereof are disclosed. The steam generator includes a housing for containing water, a heater for heating the water in the housing, and a control unit for controlling an operation of the heater according to an inner pressure of the housing.

Abstract: The present invention relates to a device for controlling the Blow out preventer (BOP) used in well drilling operations comprising: BOP control unit, master control panel connected to the BOP unit for acquisition of data and processing the said data, comprising an input module, an output module and analog I/P module; a plurality of slave panels connected to master panel through the connecting means comprising input module, output module for controlling the BOP control unit; wherein the said slave panel is a programmable logic controller(PLC) for controlling BOP control unit.

Abstract: A device (100, 2604) includes a controllable skin texture surface (2602), a sensor (2700), and control logic (200). The sensor senses a plurality of points of interest (2804, 2806) of a user surface (2800). The control logic controls a plurality of portions (2900) of the controllable skin texture surface to protrude at locations with respect to the plurality of points of interest in response to the sensor sensing the plurality of points of interest. In one example, the control logic periodically adjusts the plurality of portions protruding from the controllable skin texture surface in response to movement between the user surface and the controllable skin texture surface.

Abstract: There is realized a configuration in which, even when pressure is concentrated, the pressure can be adjusted based on accurate and precise detection of pressure distribution, thereby providing sleeping comfort. An air mattress device has a sensor that detects the distribution of pressure applied to an elastic sheet, by means of light emitting parts and light receiving parts of optical fibers uniformly distributed in the elastic sheet. Based on pressure distribution detected by the sensor, the air mattress device adjusts the amount of gas filled in an air mattress. The sensor can be disposed above the air mattress of the air mattress device.

Abstract: The present invention is generally directed to an apparatus providing real time adaptive active fluid flow cooling, for cooling an electronic system, an electronic system utilizing the same, and a method for providing real time adaptive active fluid flow cooling. The electronic system consists of a circuit board having a heat generating component, a heat dissipating element mounted to the heat generating component and an apparatus for providing real time adaptive active flow cooling. The apparatus consisting of a plurality of active cooling devices that remove heated air or fluid with ambient air or fluid by propelling an fluid flow stream in a first direction toward the heat dissipating element, and where at least one active cooling device contained in the plurality of active cooling devices propels an fluid flow stream in a second direction toward the heat dissipating element.

Abstract: A variable function voting solenoid-operated valve apparatus is provide, wherein the apparatus includes a first solenoid-operated valve, a second solenoid-operated valve and a bypass valve disposed in mutual fluid communication, wherein one or more of said first solenoid-operated valve, said second solenoid-operated valve and said bypass valve further comprises one or more air-to-move valve actuators; an air supply for delivering a supply of compressed air to said one or more air-to-move valve actuators; a plurality of pressure sensors, including a first pressure sensor disposed in fluid communication with said first solenoid-operated valve, a second pressure sensor in fluid communication with said second solenoid-operated valve, and a third pressure sensor disposed in fluid communication with said bypass valve; and an exhaust vent for venting pressure accumulated within one or more of said first solenoid-operated valve, said second solenoid-operated valve and said bypass valve to an external environment.

Abstract: A method of measuring the condition of a safety valve comprises measuring a condition parameter that varies with the sealing force of the valve. The condition parameter may be determined from in-line measurements, such as measurements of a pressure pso at which the valve will open and a pressure psl at which the valve will leak.

Abstract: Testing of an aircraft pressure control system may be performed without use of an altitude chamber. Aircraft cabin configuration date may be modeled and used, along with high resolution positional feedback from a simulated valve, to produce a high resolution electrical signal that may represent a simulated cabin pressure. A voltage-to-pressure transducer may convert the electrical signal to a pneumatic signal. The pneumatic signal may be employed to operate a cabin-pressure controller under test. The controller may operate an outflow valve actuator and an attached potentiometer. The potentiometer may produce a feedback signal and closed-loop testing of the aircraft pressure control system may thus be performed. The outflow valve actuator may be operated without being attached to an outflow valve because a simulated aerodynamic load may be applied to the actuator.

Abstract: A system and method for controlling a variator operate to detect variator torques and/or internal pressures and generates a preliminary corrective command. The preliminary corrective command is transformed via a dynamic transform to account for system characteristics during transient operating conditions such as machine acceleration, such that the acceleration of the system during transient periods is not torque-limited by static torque-control map values. In an embodiment, the acceleration may be positive or negative, and in a further embodiment, braking is automatically applied in the case of negative requested power or desired machine retarding.

Abstract: A system and method for controlling the temperature of a process tool uses the vaporizable characteristic of a refrigerant that is provided in direct heat exchange relation with the process tool. Pressurized refrigerant is provided as both condensed liquid and in gaseous state. The condensed liquid is expanded to a vaporous mix, and the gaseous refrigerant is added to reach a target temperature determined by its pressure. Temperature corrections can thus be made very rapidly by gas pressure adjustments. The process tool and the operating parameters will usually require that the returning refrigerant be conditioned and processed for compatibility with the compressor and other units, so that cycling can be continuous regardless of thermal demands and changes.

Abstract: A partial pressure control system 45 includes two valves 2 which are branched from an operation gas supply pipe 44 and which variably control operation gas, pressure sensors 3 which are respectively connected to the each valves 2 in series and which detect pressure of the operation gas, and a controller 25 which proportionally controls the operation of the valves 2 based on detection result of the pressure sensors 3, thereby relatively controlling pressures P1 and P2 of the two valves. With this configuration, it is possible to reduce wastefull consumption of the operation gas, and to enhance the responsivity with respect to change of setting and the like.

Abstract: Methods and systems are described for sensing force information at a plurality of points on a continuous surface, and detecting contextual information about an object on the surface based on the distribution of force on the surface. For example, a plurality of sensors may be included below different points on such a substantially continuous surface, where the sensors are operable to sense force information. Then, a processor connected to the sensors may determine a location of the object relative to the surface, based on the force information from the sensors.

Abstract: A vehicle suspension includes a plurality of pneumatic suspension elements with each pneumatic suspension element being associated with one pneumatic control valve. A common manifold is fluidly connected to each of the pneumatic control valves. The manifold includes a supply valve that is connected to an air supply, an exhaust valve, and a single pressure sensor. The single pressure sensor is used to measure a pressure level at each of the pneumatic suspension elements. A controller cooperates with the manifold to individually adjust pressure levels of each of the pneumatic suspension elements based on the individually sensed pressure levels. The controller can use the sensed pressure levels to adjust suspension ride height, identify system leaks and isolate defective suspension elements, identify uneven pressure distribution, and to determine a load supported on the pneumatic suspension elements.

Abstract: A tire pressure control system for a tire mounted to a wheel of a vehicle is disclosed. The tire pressure control system comprises a servo system mounted to the wheel that includes a servo mechanically connected to a vent valve that is in fluid communication with a gas inside the tire. The vent valve is adapted for bleeding the gas out of the tire and into the ambient atmosphere. A pressure sensor is in fluid communication with the gas inside the tire, and a control circuit is electrically connected to the servo and the pressure sensor. The control circuit further includes a signal receiving means and a memory for storing a commanded pressure signal. The control circuit actuates the servo to open the vent valve when the pressure sensor indicates a tire pressure of greater than the commanded pressure. A master control unit is adapted to transfer the commanded pressure signal to the control circuit through a transmission means.

Abstract: A feedback control loop for a high pressure pump modifies the accumulator velocity and pressure during solvent transfer. The accumulator velocity is adjusted to maintain the system pressure equal to the expected pressure to thereby eliminate the effect of the flow deficit created by a thermal effect.

Abstract: A valve tester system is disclosed that comprises a valve tester assembly for rotating a valve stem of a valve. The valve tester assembly may include a support, a rotation element mounted on the support for rotating a valve during a rotation event, a control element for controlling aspects of the rotation event of the valve by the rotation element, and an element for detecting a location of the valve tester assembly during the rotation event of the valve. In some embodiments of the invention, the element for detecting the location of the valve tester assembly includes a Global Positioning Satellite (GPS) receiver. In some embodiments, the GPS receiver is integral with the control element.

Abstract: A process of grinding a surface of a workpiece, by a grinding tool rotated about its axis. The process includes a grinding step of grinding the workpiece surface, by pressing at least one of the grinding tool and the workpiece against the other of the grinding tool and the workpiece, such that a constant force is exerted on the other of the grinding tool and the workpiece by the at least one of the grinding tool and the workpiece. Also disclosed is a grinding apparatus including: a moving device operable to move at least one of the grinding tool and the workpiece relative to the other of the grinding tool and the workpiece, at least in an infeed direction that increases a depth of cut of the grinding tool into the workpiece; and a controller which controls the moving device, such that the at least one of the grinding tool and the workpiece is pressed against the other of the grinding tool and the workpiece, with a constant force.

Abstract: A control device which quickly adjusts a low pressure processing chamber to a desired pressure regardless of gas type, gas flow rate or target pressure simply by optimizing constants.

Abstract: In a Stirling engine, a casing houses therein component elements of the Stirling engine, including a high-temperature-side cylinder, a high-temperature-side piston, a connecting rod, a crankshaft, etc. A pressure control device determines whether the pressure of the gas charged in the casing has declined. If the pressure of the gas has declined, the pressure control device drives a pump to pressurize the gas charged in the casing.

Abstract: The invention relates to a method for controlling the operating mode of a cleaner, in particular, a high-pressure cleaner, wherein a pump delivers cleaning fluid via a pressure line to a closable spray nozzle, a signal transducer which provides control signals as a function of the pressure in the pressure line being coupled with the pressure line. To further develop the method so that the cleaner can be reliably controlled in a constructionally simple manner from the spray nozzle, it is proposed, in accordance with the invention, that a first control signal be provided by the signal transducer by closing the spray nozzle, and a second control signal be provided by the signal transducer by subsequently opening the spray nozzle again, and that the operating mode of the cleaner be controlled as a function of the duration of the time interval between the two control signals. A cleaner, in particular, a high-pressure cleaner, for performing the method is also proposed.

Abstract: A transmitter configured to measure a process variable of an industrial process, includes a pressure sensor configured to couple to a pressure of a fluid. An acoustic detector receives an acoustic signal from the fluid. Measurement circuitry coupled to the pressure sensor and the acoustic detector provides an output related to pressure of the fluid.

Abstract: Aspects of this invention include a steering tool having a controller configured to provide closed-loop control of hydraulic fluid pressure. In one exemplary embodiment, closed-loop control of a system (reservoir) pressure may be provided. In another embodiment, closed-loop control of a blade pressure may be provided while the blade remains substantially locked at a predetermined position. Other exemplary embodiments may incorporate rule-based-intelligence such that pressure control thresholds may be determined based on various measured and/or predetermined downhole parameters. The invention tends to reduce the friction (drag) between the blades and the borehole wall and thereby also tends to improve drilling rates. Moreover, the invention also tends to improve the service life and reliability of downhole steering tools.

Abstract: Disclosed are a bonding method for a semiconductor chip, which employs an ultrasonic bonding scheme that prevents wear-out of the top surface of a mount tool and ensures both high reliability and high productivity, and a bonding apparatus which is used to carry out the method. The bonding apparatus and method are provided with means for suppressing generation of a sliding friction. The apparatus and method execute a bonding process by controlling vibration-axial directional holding force and inertial force based on information given from control management means to thereby maintain a relationship of (vibration-axial directional holding force)>(die shear strength)+(inertial force) while applying an ultrasonic vibration to a region which is subjected to bonding.

Abstract: The invention provides an overload detector with a simplified system configuration to be applied to a railway car having a connecting bogie. A connecting bogie 52 (two axle bogie) having front and rear wheels 52C and 52D are disposed to extend between a first car C1 and a second car C2. The front and rear cars C1 and C2 are supported via air springs 52A and 52B on the connecting bogie 52. The other end of the car C1 is supported via air springs 51A and 51B on a bogie 51 (two axle bogie) having front and rear wheels 51C and 51D. The other end of the car C2 is supported via air springs 53A and 53B on a bogie 53 (two axle bogie) having front and rear wheels 53C and 53D. Pneumoelectric converters 41 and 42 are disposed along paths of pneumatic pipings 21 and 22, and the inner pressure of air springs 51A and 51B is converted into an inner pressure signal AS1, and the inner pressure PAS2 of the air springs 52A and 52B is converted into an inner pressure signal AS2.

Abstract: A method of data transmission from a sensor to a control unit and a sensor and control unit are described, the sensor transmitting both differential values and absolute values. The differential values are analyzed in the control unit to perform the function provided, and the absolute values are analyzed for the plausibility check of the function.

Abstract: In a state of separating a front end face of an air injecting nozzle 23 from a worked work W by a predetermined interval h, the air injecting nozzle 23 is moved at a constant speed in an X axis direction, injects air from an injecting hole 27a of a nozzle main body 27 and is moved to pass centers O1, O2 of worked holes Wb, Wc of the work W. A variation in a pressure is measured by a pressure measuring unit 30. X axis coordinates of the centers O1, O2 of the holes Wb, Wc, a hole diameter E and a center interval distance D1 are calculated based on coordinates of center points T1, T2 of inclined portions Ld, Lu of a curve Lx of the pressure relative to the measured X axis coordinate.

Abstract: The invention is a self-contained process shutdown device that detects abnormal pressures and initiates shutdown by removing the pneumatic or hydraulic pressure needed for a given process or flow to continue. The process' pressure is detected by means of a switch-gauge (a pressure gauge with high and low alarm electrical contacts) which has a pressure sensing port connected to the monitored pressure. The contacts from the switch-gauge are connected to an electronic logic circuit that sends one or more shutdown pulses to trip a pulse driven solenoid and initiate the shutdown. This device provides indicator lamps to show statuses and alarms as well as switch or pushbuttons to activate the “Reset” and “Test” functions. The electrical power is supplied by a power module that is constituted of battery cells connected in such way that it provides a dual voltage output to feed the electronic logic separate from the pulse driven solenoid driver circuit.

Abstract: An integrated system for automatic vehicle collision avoidance and warning for vehicles operating on any highway or road system globally. The system may be used to not only illuminate the brake lights on the following vehicle but also to begin the application of braking pressure as a result of analysis of the speed of the vehicle. The system includes an RFID transponder (either active or passive) located in the rear and front of the vehicle with discrete recognition capability as to vehicle proximity and resulting action to be taken as a result of driver action. On the vehicle either the brake lights will be illuminated ahead of any actual driver action; an initial application of brake pressure as a result of receiving a signal from the vehicle in front, the pressure which is determined by analysis of the current speed of the vehicle or the system will provide additional warning through brake light illumination to the following vehicle with similar equipment and cruise control will be disengaged.

Abstract: The present invention discloses a system and method for confining a robot to a particular space. The system includes a portable barrier signal transmitter that produces a barrier signal primarily along an axis, and a mobile robot capable of avoiding the barrier signal upon detection of the barrier signal. In the preferred embodiment the barrier signal is emitted in an infrared frequency and the robot includes an omni-directional signal detector. Upon detection of the signal, the robot turns in a direction selected by a barrier avoidance algorithm until the barrier signal is no longer detected.

Abstract: A vehicle environment monitoring device comprises an imaging section for taking image data of an environment of an automobile, the image including at least two types of colors; a setting section for setting a specific area of the image data obtained by the imaging section, wherein the specific area has a strip shape longer in, and parallel to, a horizontal direction of a frame image and includes at least two types of colors; an extraction section for taking in image data of the specific area in units of one or a plurality of frame images taken by the imaging section in time series and extracting moving vector information based on the image data of the specific area; and a detection section for detecting a second vehicle which is present in an environment of a first vehicle having the vehicle environment monitoring device mounted thereon, based on the moving vector information.

Abstract: A system for detecting abnormal situations associated with a reactor in a process plant receives statistical data associated with pressure within a reactor vessel. For example, a pressure sensor device disposed at least partially within the reactor vessel may generate the statistical data based on a pressure signal. The statistical data is analyzed to detect whether one or more abnormal situations associated with an agitator of the reactor exist. For example, the statistical data may be analyzed to detect whether the agitator is no longer turning, is turning at a rate that is different than expected, is out of balance, is broken, etc. If an abnormal situation is detected, an indicator of the abnormal situation may be generated.

Abstract: A pressure sensor, a pressure control apparatus, and a flow rate control apparatus are provided to automatically correct temperature drift of the pressure sensor and accurately detect pressure despite changes in temperature. An embodiment includes an upstream side pressure sensor between an orifice and a control valve, to control flow rate through the orifice by a regulating control valve, while calculating the flow from the upstream side pressure. With a temperature sensor, a memory means, and a temperature drift correcting means which calculates drift of the upstream side pressure sensor from data in the memory means when the temperature of the fluid changes and offsets the output drift of the upstream side pressure sensor with the calculated amount of the output drift, temperature drift of the pressure sensor is automatically corrected, enabling accurate control of flow rate.

Abstract: Quantitative Risk Analysis (QRA) can be applied to provide a more realistic assessment of the risk associated with vessel accumulation due to common mode scenarios. The QRA process takes the results of a traditional flare study and QRA inputs such as the frequencies of the common mode scenarios and the layers of protection that will tend to reduce the severity of the common mode scenario, and generates an system risk profile, such as an accumulation versus frequency relationship for each vessel discharging to the relief header. This relationship provides an estimate of the overall risk associated with the relief header system. The QRA program makes the above analysis process possible by automating the generation, execution, and interpretation of the many possible permutations that are required to characterize the system.

Abstract: The invention relates to a safety device for apparatuses having parts freely movable in space, particularly handling equipment such as industrial robots or driverless transportation means, as well as a method for securing such apparatuses by means of such a safety device. The apparatuses have switching means which in the case of a collision of the moving parts with persons or objects emit a control signal through which the moving parts can be stopped or an emergency program can be started up, which brings about a movement sequence opposing the approach movement. The invention is characterized in that the safety device is constructed in the form of a tactile sensor system formed from optical waveguides and located on moving parts of the apparatus.

Abstract: A cooling system is configured to supply individually metered amounts of cooling fluid to heat generating components, e.g., processors, micro-controllers, high speed video cards, disk drives, semi-conductor devices, and the like, of an electronic system. The cooling system includes at least one variable speed fan, e.g., blower, configured to supply fluid through a centralized plenum and thereafter through a plurality of nozzles to the components of the electronic system. Each of the nozzles contains a valve to control the amount of fluid flow through the each of the nozzles. A controller is provided to control the operation of the variable speed fan and the operation of each of the valves is also controlled by a controller.

Abstract: An air flow regulator includes a damper (14) and an air cylinder (20) operatively connected with the damper (14) to adjust a damper setting. A pressure sensor (52) indicates a pneumatic pressure in the air cylinder (20). An air pressure regulator (42) is operatively connected with the air cylinder (20) to pressurize and exhaust the air cylinder (20) responsive to an electrical input (70). The air pressure regulator (42) includes a calibration table (64) associating steady state air cylinder pressure values with regulator shut-off pressure values. Responsive to the electrical input (70) updating a steady-state air cylinder pressure value, the air pressure regulator (42) pressurizes or exhausts the air cylinder (20) until the pressure sensor (52) indicates a pressure corresponding to a regulator shut-off pressure value associated in the calibration table (64) with the updated steady-state air cylinder pressure value, whereupon the air pressure regulator (42) ceases the pressurizing or exhausting.

Abstract: A CPU 15 determines an output of a feeling model based on signals supplied from a touch sensor 20. The CPU 15 also deciphers whether or not an output value of the feeling model exceeds a pre-set threshold value. If the CPU finds that the output value exceeds the pre-set threshold value, it verifies whether or not there is any vacant area in a memory card 13. If the CPU finds that there is any vacant area in a memory card 13, it causes the picture data captured from the CCD video camera 11 to be stored in the vacant area in the memory card 13. At this time, the CPU 15 causes the time and date data and the feeling parameter in the memory card 13 in association with the picture data. The CPU 15 also re-arrays the picture data stored in the memory card 13 in the sequence of the decreasing magnitude of the feeling model output.

Abstract: The combustion vibration estimating apparatus comprises an inputting unit for inputting limiting values of plant data, weather data and internal pressure variation, an internal pressure variation characteristic grasping unit for making internal pressure variation of a combustor into a mathematical model from the input plant data and weather data, a combustion vibration region estimating unit for applying a limiting value of the internal pressure variation to the mathematical model obtained by the internal pressure variation characteristic grasping unit to obtain combustion vibration-prone to be generated region, and an outputting unit for outputting a combustion vibration region estimation result by the combustion vibration region estimating unit.

Abstract: This invention is to sufficiently reduce a change in optical characteristic of an optical system due to gas mixture in each space in the optical system and to resolve a pattern image with a small line width. A projection optical system (22) has lenses (2a-2c) as a plurality of optical elements, a holding member (3) for holding the lenses, and a lens barrel (1) serving as a vessel for accommodating the lenses (2a-2c) and holding member (3). The lens barrel (1) has at least two spaces (51a, 51b) inside. A gas contained in one space (51a) has a refractive index different from that of a gas contained in the other space (51b). The pressure of the gas in one space (51a) is different from that of the gas in the other space 51b. The vessel (1) has gas supply ports (5a, 5c) for independently supplying the gases into the two spaces (51a, 51b) and gas exhaust ports (5b, 5d) for exhausting the gases.

Abstract: Quantitative Risk Analysis (QRA) can be applied to provide a more realistic assessment of the risk associated with vessel accumulation due to common mode scenarios. The QRA process takes the results of a traditional flare study and QRA inputs such as the frequencies of the common mode scenarios and the layers of protection that will tend to reduce the severity of the common mode scenario, and generates an system risk profile, such as an accumulation versus frequency relationship for each vessel discharging to the relief header. This relationship provides an estimate of the overall risk associated with the relief header system. The QRA program makes the above analysis process possible by automating the generation, execution, and interpretation of the many possible permutations that are required to characterize the system.

Abstract: A system and method for controlling server chassis cooling fans includes monitoring operating temperatures associated with each of a plurality of temperature sensors. The temperature sensors may be coupled with a plurality of respective server processing cards. In accordance with a particular embodiment of the present invention, the operating speed of each of a plurality of server chassis cooling fans coupled with a server chassis is increased, in response to an operating temperature exceeding a predetermined maximum operating temperature measured at any one of the plurality of temperature sensors. In accordance with another embodiment of the present invention, the operating speed of each of the plurality of server chassis cooling fans is decreased in response to an operating temperature below a predetermined minimum operating temperature measured at each of the plurality of temperature sensors.

Abstract: A flow responsive compressor control system for a compressed gas distribution system enables operation of the ones of a plurality of compressors by selecting one of a plurality of strategies relating a flow of compressed gas and the operation of at least one compressor. A strategy is selected in response to a flow and a rate of change of pressure of compressed gas in the distribution system.

Abstract: A method for detecting compressor degradation includes the steps of providing a dataset for a compressor relating compressor operating parameters to each other; detecting real time actual values of the compressor operating parameters including an evaluated operating parameter; using at least one of the real time actual values and the dataset to determine a predicted value of the evaluated operating parameter; and comparing the predicted value of the evaluated operating parameter to the real time actual value of the evaluated operating parameter. This advantageously allows a prognosis of compressor performance to determine whether performance degradation is occurring.

Abstract: A method and system for controlling one or more compressors in a multiple compressor environment. The system includes a controller, an interface, and one or more sensors coupled to the compressors and a system output. The controller is operable to communicate with each of the one or more compressors, receive data from the one or more sensors and the interface, communicate one or more system parameters to a display device, and modify the operation of the one or more compressors in response to user input and in response to data received from the one or more sensors.

Abstract: An air flow regulator includes a damper (14) and an air cylinder (20) operatively connected with the damper (14) to adjust a damper setting. A pressure sensor (52) indicates a pneumatic pressure in the air cylinder (20). An air pressure regulator (42) is operatively connected with the air cylinder (20) to pressurize and exhaust the air cylinder (20) responsive to an electrical input (70). The air pressure regulator (42) includes a calibration table (64) associating steady state air cylinder pressure values with regulator shut-off pressure values. Responsive to the electrical input (70) updating a steady-state air cylinder pressure value, the air pressure regulator (42) pressurizes or exhausts the air cylinder (20) until the pressure sensor (52) indicates a pressure corresponding to a regulator shut-off pressure value associated in the calibration table (64) with the updated steady-state air cylinder pressure value, whereupon the air pressure regulator (42) ceases the pressurizing or exhausting.

Abstract: A compressor control module for use with a pressurization system having a strain gauge transducer and a compressor. The compressor control module includes variable voltage references associated with low and high pressure limits, comparator circuits configured to compare the voltage from the strain gauge pressure transducer to the variable voltage references, a control logic circuit configured to logically combine signals from the comparator circuits, and a relay circuit configured to apply power to the compressor.