1669 results about "Displacement control" patented technology

Compositions, apparatus incorporating a composition, and methods of use are described, one composition embodiment consisting essentially of one or more reactive metals in major proportion, and one or more alloying elements in minor proportion, with the provisos that the composition is high-strength, controllably reactive, and degradable under defined conditions. Compositions of the invention may exist in a variety of morphologies, including a reactive metal or degradable alloy processed into an alloy of crystalline, amorphous or mixed structure that may constitute the matrix of other composition, for instance a composite. Methods of using apparatus comprising a composition, particularly in oilfield operations are also described (e.g. flow and displacement control, sensors, actuators). This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).

An apparatus and method for EUV light production is disclosed which may comprise a laser produced plasma (“LPP”) extreme ultraviolet (“EUV”) light source control system comprising a target delivery system adapted to deliver moving plasma initiation targets and an EUV light collection optic having a focus defining a desired plasma initiation site, comprising: a target tracking and feedback system comprising: at least one imaging device providing as an output an image of a target stream track, wherein the target stream track results from the imaging speed of the camera being too slow to image individual plasma formation targets forming the target stream imaged as the target stream track; a stream track error detector detecting an error in the position of the target stream track in at least one axis generally perpendicular to the target stream track from a desired stream track intersecting the desired plasma initiation site. At least one target crossing detector may be aimed at the target track and detecting the passage of a plasma formation target through a selected point in the target track. A drive laser triggering mechanism utilizing an output of the target crossing detector to determine the timing of a drive laser trigger in order for a drive laser output pulse to intersect the plasma initiation target at a selected plasma initiation site along the target track at generally its closest approach to the desired plasma initiation site. A plasma initiation detector may be aimed at the target track and detecting the location along the target track of a plasma initiation site for a respective target. An intermediate focus illuminator may illuminate an aperture formed at the intermediate focus to image the aperture in the at least one imaging device. The at least one imaging device may be at least two imaging devices each providing an error signal related to the separation of the target track from the vertical centerline axis of the image of the intermediate focus based upon an analysis of the image in the respective one of the at least two imaging devices. A target delivery feedback and control system may comprise a target delivery unit; a target delivery displacement control mechanism displacing the target delivery mechanism at least in an axis corresponding to a first displacement error signal derived from the analysis of the image in the first imaging device and at least in an axis corresponding to a second displacement error signal derived from the analysis of the image in the second imaging device.

The present invention provides a vertically oriented gasifier comprising vertically successive processing regions for conversion of carbonaceous feedstock into gas. The gasifier comprises of: one or more processing chambers with two or more vertically successive processing regions being distributed within said one or more processing chambers, within each one of which a respective process selected from the group consisting of drying, volatilization and carbon conversion is at least partially favoured, The processing regions are identified by temperature ranges respectively enabling each said respective process. One or more additive input elements are associated with the processing regions for inputting additives to promote each said at least partially favoured process therein. In addition, the gasifier comprises one or more material displacement control modules adapted to control a vertical movement of the feedstock through said processing regions to enhance each said at least partially favoured process, one or more feedstock inputs located near a first of said processing regions and one or more gas outputs and one or more residue outputs.

The present invention comprising a valve main body having a first valve chamber, a second valve chamber and a third valve chamber, said first valve chamber communicating with a first communication passage, said second valve chamber having a second valve seat face for a valve hole and communicating with a second communication passage, said third valve chamber having a third valve seat face and communicating with a third communication passage; a valve body having a first valve member, a second valve member and a third valve member, said second valve member having a intermediate communication passage therein communicating with said first valve chamber and said third communication passage, said second valve member opening and closing a valve hole with respect to second valve seat face, thereby communicating with said first valve chamber and said second valve chamber, said third valve member performing a valve opening/closing action with respect to said third valve seat face in an reverse manner against said second valve member, thereby opening or closing the communication with said intermediate communication passage and said third communication passage, said first valve member performing a valve opening/closing action in the same direction to said second valve member; a pressure sensing member having a valve seat portion, said valve seat portion being disposed at a free end of said pressure sensing member, said valve seat portion performing a valve opening/closing action with respect to said first valve member, thereby opening or closing the communication with said first valve chamber and said intermediate communication passage; and a solenoid member driving said valve body in accordance with an electric current supplied thereto; and an auxiliary communication passage providing a communication between said first valve chamber and said intermediate communication passage.

The invention relates to a preparation method of an emulsion deep profile/displacement control agent containing gel microspheres of a core shell structure. According to the method, materials are fed many times to carryout inverse emulsion low-temperature oxidation and reduction to initiate free radical polymerization so that water-solubility monomers (including acrylamide, ionic monomer I, the ionic monomer II and the third monomer) react with a cross-linking agent to generate the emulsion deep profile/displacement control agent containing gel microspheres of a core shell structure. The invention also relates to the emulsion deep profile/displacement control agent containing gel microspheres of a core shell structure, which is prepared by using the method. The profile/displacement control agent is a water-solubility microgel oil displacement material containing gel microspheres from nano scale to micron scale; with small initial grain size, the profile/displacement control agent can enter into the deep part of stratum; in addition, the profile/displacement control agent has high emulsion active component content and good flowability, can have volume expansion and mutual cementation under the actions of formation water and temperature according to the condition whether charges carried by the ionic monomers at a core layer and a shell layer are same or not; therefore the profile/displacement control requirements of different geological oil deposits of oil fields can be met.

The invention belongs to the building support component technology field including the stress automatic control and monitoring as well as the structural safety, and relates to a steel tube supporting internal force automatic compensating and displacement controlling system. The system comprises an upper system, a PLC control system module and a field executive system. A steel support is arranged on a reinforced concrete diaphragm wall, a hydraulic jack is arranged on the steel support, and real time pressure monitoring values are fed back through a pressure sensor. The steel support and the hydraulic jack form a pre-stressed steel support structure, the hydraulic jack is connected with a hydraulic pump station through an oil circuit, and is connected with the PLC control system module through the pressure sensor, the hydraulic pump station is connected with the PLC control system module, and a PLC controlling device is connected with the upper system. Through auto-control software and a PLC control system, the automatic control to the axial force of the steel support is realized, thereby controlling the displacement and the settlement of the deep excavation supporting structure and the adjacent basic facilities.

A turbine (2) driven electric power production system (1), —said turbine (2) arranged for being driven by a fluid (3) having a fluid speed (v) varying in time, —said turbine (2) connected to a hydrostatic displacement pump (6) further connected to a hydrostatic displacement motor (8) as part of a closed loop hydrostatic transmission system (7), —said motor (8) arranged for driving an electrical generator (9) supplying AC power (10) at a frequency (f_g) near a given desired frequency (f_des), characterized by a closed loop system arranged for controlling a volumetric displacement (13) of the hydrostatic motor (8), comprising —a fluid speed meter (11m) arranged for producing a speed signal (11s) representing a speed (v) of said fluid (3), and —a rotational speed meter (12m) arranged for providing a rotational speed signal (12s) representing a rotational speed measurement (ω) of said turbine (2), —a motor displacement control system (15) for continuously receiving said speed signal (11s) and said rotational speed signal (12s) and arranged for calculating a control signal (16), —a volumetric displacement control actuator (17) on said hydrostatic motor, arranged for receiving said control signal (16) for continuously adjusting a volumetric displacement (d) of said hydrostatic motor (8) for maintaining a set turbine tip speed ratio (tsr_set) and thereby providing an improved power efficiency of the power production system (1) during fluctuations in said fluid speed (v).

The scan range of each probe of a probe array is increased so that two or more recording areas formed on a recording surface of a recording medium can be scanned by using one probe. Moreover, displacement control information is recorded in advance between the recording areas which are mutually adjacent on the recording surface of the recording medium. On the basis of the displacement control information, the displacement of the probes are stabilized at a constant speed, and then the recording areas are scanned.

The invention is a large multifunctional frozen soil-structure interface cyclic direct shear apparatus and a test operation method. The structure of the apparatus comprises a horizontal and vertical loading system, a horizontal and vertical displacement and a load sensor, a temperature control and refrigeration system, a temperature sensor, a data collecting and self-stabilizing system, a guide rail system, and a soil sample box and supports. The test operation method comprises the steps of: 1. Installing the interface steel of required roughness; 2. Applying normal boundary conditions to a soil sample; 3. Cooling the soil sample; and 4. When the temperature cools to a target temperature, performing a shearing to the frozen soil interface in a selected shearing speed, at the same time the date collecting system beginning to record the stress-strain relation of the frozen soil interface. The apparatus and the method are the advantageous in that: 1) accurate control of the interface temperature in the temperature range between 0 DEG C and -20 DGE C can be achieved; 2) three normal boundary conditions of constant stiffness, constant displacement and constant stress can be accurately applied; 3) interfaces of various roughness can be simulated; 4) two shear modes of cyclic shear and monotonic shear can be realized; and 5) the stress applying and displacement control are accurate.

A precision mirror displacement assembly for controlling rotation of a mirror about a rotational axis to obtain a precise mirror orientation includes a mirror having an enhanced backside and a reflective front surface. The enhanced backside has a sufficient thickness to provide that attachment of mirror displacement control components, such as portions of actuator and position sensor assemblies, to the backside during manufacture of the mirror assembly does not cause distortion of the reflective front surface of the mirror. The enhanced backside also is of sufficient thickness to avoid distortion of the front surface based on interaction of the mirror with mechanical stops and actuator components that are attached to a base of a separate housing of the mirror assembly that opposes the backside of the mirror.

The utility model discloses a three-dimensional laser washing device. The three-dimensional laser washing device comprises a pulsed laser with indicating red light and a control system of the same pulsed laser, a beam spread collimation optical system, a two-dimensional optical scanning galvanometer and a controller of the same two-dimensional optical scanning galvanometer, a focusing position regulator and a displacement controller. The focusing position regulator consists of a focusing lens, a filter, a microscopic imaging lens, a CCD (Charge Coupled Device) and a processor, wherein the focusing lens is fixed with the microscopic imaging lens, the indicating red light of the pulsed laser reflects on the sample and images on the CCD (Charge Coupled Device), the microscopic imaging lens moves longitudinally to find a position where the contrast ratio is the highest and the image edge is the clearest, the position is a focus position of the focusing lens, and the three-dimensional laser washing device consists of the two-dimensional scanning galvanometer and the focusing lens. The three-dimensional laser washing device makes full use of the two-dimensional laser washing device which is based on the optical galvanometer scanning system, presetting the surface shape of the washing material is not required before cleaning, thereby having the advantages of being wide in application, simple in structure, good in stability, easy to debug, and the like.

The present invention provides an electronic injection engine variable working displacement volume control device. It includes two portions of fuel injection control mode and engine injection control device. Said fuel injection control mode includes two portions of fuel injection mode under the condition of different working displacement volumes and control logic mode under the different working conditions. The injection control device is composed of two portions of injector control additional circuit and variable working displacement volume controller.

The invention discloses a determination device and method of constraint irreducible water saturation in a reservoir rock core. The device mainly comprises a high-pressure nitrogen source, a humidifier, a rock core holding device, an oil-water displacement pump, a loop pressure pump, a return pressure control pump, a gas metering instrument and a liquid metering instrument, wherein the rock core clamping device is arranged in a constant-temperature box; the high-pressure nitrogen source is connected with the inlet end of the rock core clamping device through the humidifier; the oil-water displacement pump is also connected with the inlet end of the rock core clamping device through an oil-water displacement control valve; the loop pressure pump is connectd with the rock core clamping device through a loop pressure control valve, and applies confining pressure to the rock core; and the outlet end of the rock core clamping device is connected with the return pressure control pump, and is also connected with the gas metering instrument and the liquid metering instrument respectively. The device is reliable in principle, is reasonable in structure, and is simple and convenient to operate, is utilized for determining the constraint irreducible water saturation in the reservoir rock core, can achieve the highest pressure of 70Mpa and the highest temperature of 150 DEG C, and remedies the defects of an existing gas reservoir log analysis and gas well production dynamic analysis method as well as the technique application.

The invention discloses a high-temperature fractured rock mass permeation test device and a high-temperature fractured rock mass permeation test method and relates to a rock mass mechanical test technology. In the device, a displacement control system (30), an upstream pressure control system (10) and a downstream pressure control system (40) are connected with a high-temperature permeation test tank (20) respectively so as to realize control over the high-temperature permeation test tank (20); and the upstream pressure control system (10), the downstream pressure control system (40) and the high-temperature permeation test tank (20) are connected with a data acquisition system (50) respectively to realize date acquisition. The device and the method are suitable for tests of water and airpermeation of various fractured rock masses, and the permeability coefficient of the rock masses can be measured; and the measurement of permeability coefficients of fractures in the fields of hot dry rock geothermal exploitation, deep shale gas exploitation and artificial induction fracture application and the like can be simulated and realized.

A liquid chemical supply system includes a liquid chemical pump having a pump chamber for supplying a liquid chemical and a volume variation member that will vary the volume of the pump chamber, and will intake or discharge the liquid chemical based upon a change in the volume of the pump chamber in accordance with the volume variation member. The system also comprises an operation means for causing the volume variation member to operate, an operation amount detection means for detecting the operation amount of the volume variation member, a displacement control means for performing displacement control so that the volume variation member will be displaced by the operation means when liquid chemical ports that lead to the pump chamber are in the closed state, and a determination means for determining the presence or absence of gas inside the pump chamber based upon the operation amount detection results from the operation amount detection means during displacement control.

A behavior control apparatus for a vehicle is disclosed which allows a driver to select permission or inhibition of control. The apparatus includes a braking control section for performing, when the vehicle behavior detected is displaced to the behavior instability side with respect to a control start reference, braking control to stabilize the vehicle behavior, and an engine output suppressing control section for performing, when the vehicle behavior detected is displaced to the behavior instability side with respect to another control start reference, control to suppress the engine output power to stabilize the vehicle behavior. If it is selected by a selection section that the engine output suppressing control should be inhibited, then the engine output suppressing control is inhibited, and further, if it is decided by a decision section that the driver has an acceleration intention, then the braking control for the stabilization of the vehicle behavior is ended.

A displacement control valve for a variable displacement compressor. The displacement control valve includes a drive force transmission body, a pressure sensitive chamber, an internal passage, and a valve body. The valve body includes an annular seal which is contactable with a valve seat surface facing toward the first valve body. The drive force transmission body includes a drive rod and a valve body structure having a shaft passage and forming the first valve body. The drive rod is fitted to the shaft passage and coupled to the valve body structure so as to form a gap passage between an outer surface of the drive rod and a wall surface of the shaft passage. The internal passage includes a recess arranged radially inward from the annular seal, the shaft passage, and the gap passage. The gap passage is in direct communication with the recess.

A hydraulic system includes a variable displacement hydraulic pump connectable to a power source, a hydraulic motor, a fluid circuit, a pump displacement control, and a controller. The pump has an inlet for receiving fluid, an outlet for discharging pressurized fluid, and a pump displacement input. The motor has an inlet for receiving pressurized fluid and an outlet for discharging spent fluid. The fluid circuit includes a supply conduit for conducting fluid discharged by the pump to the motor and a return conduit for returning fluid discharged by the motor to the pump. The pump displacement control cooperates with the pump displacement input to vary pump displacement. The controller communicates with the pump displacement control to control the pump output such that the motor is driven at a constant speed to thereby drive a generator connected to the motor at a constant speed despite speed fluctuations of the power source.

The invention discloses a tangential fretting test device and a test method thereof, and is characterized in that a load-controlled fretting fatigue test and a displacement-controlled fretting wear test can respectively be realized through different clamp combinations, thus generating a new detection method for material friction performance. Contact matching parts (contact pressure heads and testpiece) are in a line/plane type of contact, wherein, plane/plane contact and ball/plane contact can be realized respectively by replacing different contact pressure heads. The contact pressure heads are in connection with dovetail blocks in dovetail grooves and are slidable in the dovetail grooves, thus playing a positioning role. A pressure proving ring functions as a spring, so that detachment of the contact matching parts can be avoided and exertion of normal pressure can be guaranteed. And the pretension force and normal pressure are respectively obtained through a tension proving ring and the pressure proving ring, while the cyclic axial stress and cyclic displacement are set by a computer, thus finishing the fretting fatigue and the fretting wear tests respectively. The device and method of the invention are mainly used for tangential fretting tests.

A displacement control valve for a variable displacement compressor includes a first valve hole forming a part of a supply passage and a second valve hole forming a part of a discharge passage. Displacement of a reciprocating body is transmitted to each of first and second valve bodies so that each valve body opens or closes the corresponding valve hole. When the reciprocating body is within a predetermined displacement range, a double closing state occurs, in which the first valve body closes the first valve hole and the second valve hole closes the second valve hole. When the reciprocating body is out of the displacement range, a single closing state occurs. Therefore, the control valve prevents the first valve hole from opening concurrently with the second valve hole.