475 results about "Type variable" patented technology

State machines used to order and select matching operations for determining whether an input string matches any of at least one regular expression are configured by (1) accepting the set of regular expression(s), and (2) for each of the regular expression(s) of the set accepted, (A) identifying any look-ahead type strings within the given regular expression, (B) identifying any sequential type strings within the given regular expression, (C) partitioning the regular expression based on any identified simple strings, any identified look-ahead type variable strings, and any sequential type variable strings to generate partitioned parts of the given regular expression, (D) reordering the partitioned parts of the given regular expression using optimization policies to generate reordered partitioned parts of the regular expression, and (E) configuring nodes of a state machine corresponding to the given regular expression, by recording configured information of the nodes on a tangible storage medium, using (i) an order of the reordered partitioned parts of the regular expression, and (ii) a string type of the partitioned parts of the regular expression. Once configured, the state machines may accept an input string, and for each of the regular expression(s), check for a match between the input string accepted and the given regular expression using the configured nodes of the state machine corresponding to the given regular expression. Checking for a match between the input string accepted and the given regular expression using configured nodes of a state machine corresponding to the given regular expression by using the configured nodes of the state machine may include (1) checking detection events from a simple string detector, (2) submitting queries to identified modules of a variable string detector, and (3) receiving detection events from the identified modules of the variable string detector.

A packet switch having a structure of writing a variable length packet received from each of input lines into a shared buffer memory on a fixed length data block unit basis, wherein a buffer controller forms an input queue for each input line and, when the last data block of a variable length packet is registered in the input queue, links a linked address list for the input queue to one or a plurality of output queues corresponding to one or a plurality of packet destination output lines.

The invention discloses a hybrid excitation type variable frequency AC starting generating system and a control method thereof. The hybrid excitation type variable frequency AC starting generating system comprises a hybrid excitation type variable frequency AC starting generator, a first current sensor for detecting excitation current, a second, current sensor, a third current sensor, three voltage sensors, a position sensor, a changeover switch, a starting switch and a starting generating controller, wherein the second current sensor and the third current sensor are used for detecting armature current. The control method comprises the steps of performing the vector control method based on inverter voltage compensating during starting, and adjusting the excitation current according to the motor armature current and the real-time rotating speed; performing the sectional PI control method based on the output voltage frequency change during generating the power, and adding a load current compensating ring; controlling the changeover switch to switch according to the motor rotating speed and the output voltage during switching from starting to power generation. The method has important application value in the field of aviation independent power starting generating systems.

The present invention is directed to a power finishing tool having a variable position handle. In aspects of the present invention, a power finishing tool includes a motor housing for containing a motor configured to drive a working element. A variable position handle such as linear handle is adjustable generally toward/away from a power cord such that the power cord is maintained in a standard orientation (i.e., toward the rear of the tool/the direction toward a user). In a further aspect a joystick type variable handle is configured to pivot about a Z-axis extending through the power finishing tool. Suitable adjustment mechanisms include a track type mechanism wherein the handle travels along a track, a rotating bracket mechanism for permitting linear adjustment of the handle may be included for varying the position of the handle, and a ball and socket mechanism. An electrical switch for controlling operation of the power finishing tool may be mounted on the handle for controlling the motor included in the power finishing tool or alternatively to the housing in a location so as not to interfere with a user's grasp but permit efficient access. A securing mechanism such as a biased securing mechanism is configured to fix the position of the handle with respect to the motor housing is further included to secure the handle such as a pommel in a desired orientation. Suitable securing mechanisms include friction locks, positive stop (incremental locking mechanisms), or the like for securing the handle with respect to the motor housing.

The invention relates to a broad-band high-gain scannable panel antenna of parabolic reflection surface feeding. A radiation unit is a step-type variable inclination continuous transverse stub groove (VICTS). A feeding network comprises a series connection feeding structure and a parabolic reflection surface feeding network. An electromagnetic wave is reflected into a plane wave through the parabolic reflection surface type feeding network, is coupled to an upper-layer series connection feeding network and finally is radiated to a free space through the VICTS. Through relative rotation between upper and lower layers of a parallel plate waveguide, wave beam scanning is realized. The antenna of the invention covers a satellite communication ku wave band, an antenna work frequency is 10.2GHz-14.8GHz and an impedance bandwidth reaches 36.8%. At a 13GHz frequency point, a 25.7dBi gain is possessed. A antenna scanning angle scope is from 0 DEG to 56 DEG. Compared to a traditional communication in moving system antenna, by using the antenna of the invention, the feeding is simple; wave beam scanning is easy to realize; a dynamic response is fast and is in a panel shape; and a large engineering application prospect is possessed.

The invention discloses a wideband digital wave beam forming method based on an all-pass type variable fractional delay filter. The problem that a needed filter in the prior art is large in order number and high in complexity is solved. The method comprises the steps that (1) according to radar system parameters, sampling rate fs and sampling time ts are determined; (2) according to the radar array geometric structure and the sampling time ts, a propagation time delay tau of each array element relative to a reference array element is calculated; (3) according to the sampling rate fs, an AD chip is selected to digitize analog signals received by the array elements; (4) according to the propagation time delay tau and the digitized received analog signals, the all-pass type variable fractional delay filter is designed; (5) the digitized received signals are filtered; (6) phase delay of the filtered signals is compensated for; (7) a window function is selected to conduct weighted summation on the filtered compensated signals to obtain a wave beam forming result. The wideband digital wave beam forming method can achieve wideband digital beam forming, saves hardware resources, improves instantaneity and can be used for wideband digital array radar.

The invention discloses a transformer fault diagnosis analysis method based on a bayesian network. The method includes the specific steps: step 1, determining transformer oil chromatography property variables Y = { Y1, Y2, Y3... Yn } and fault type variables D = { D1, D2, D3... Dm }, wherein yi is a value of Y1, dm is a value of Dm, using characteristic gas of a transformer oil chromatography as the transformer oil chromatography property variables, and using transformer fault types as the fault type variables; step 2, determining classification models, structural parameters and probability parameters of the bayesian network according to the transformer oil chromatography property variables and the fault type variables; and step 3, determining the transformer fault types by utilization of a connection tree algorithm.

The invention relates to a plate type variable friction damper, which is primarily used in the field of wind resistance and shock resistance of structures and equipments. The invention makes use of the variation of the friction factor of a friction surface to provide a linear damping variable friction damping device. The plate-type variable friction damper primarily consists of two cover boards, a sliding panel, a pre-tightening bolt, a disk spring and a packing strip. The friction surface of the cover board is divided into three equal parts; the friction factor between the middle friction surface and the friction surface of the sliding panel is smaller than the friction factors between the friction surfaces of the two parts on both sides and the friction surface of the sliding panel. The plate-type variable friction damper avoids the defects of high cost, being maintained intricately and oil leakiness of the traditional linear damping device, such as the oil damper, and overwhelms the problem that the constant friction damper can not keep the same control under different loads. The invention has simple structure, and is produced easily with low cost. The invention is applicable for both large structures and small structures and equipments, and is suitable to be promoted and used in the field of shock resistance of structures and equipments.

Continuous streams of multiple concurrent events are handled by a system using computation dependency graph. The computation dependency graph is derived from the mathematical concept of directed graph. The computation dependency graph has plurality of nodes representing typed or non-typed variables and arcs connecting from tail node to head node representing dependency of computation. The instance of a graph has plurality of node instances, and any node instance may be associated to external stream of event where a single event from the event stream changes the value of the node instance. The computation of a node is preformed when one or more of its tail node instance values are changed. The end result of the computation from tail to head makes the nodes connected by arcs to be coherent. The computation dependency graph has plurality of instance of the graph whose topology representing computation path may be reconfigured during the traversal of the node instances. A grammar to produce easy to read description of the computation dependency graph is understood by the system. The system produces data structure and instruction sets for the node computation according to descriptions conforming to the grammar by parsing the descriptions. The system has a computation engine to correctly traverse the graph instances described by the graph descriptions to processes events in most optimal manner. This invention includes various techniques and tools which can be used in combination or independently.

The invention relates to a connecting rod type variable grasping force cooperative self-adaptive finger device and belongs to the technical field of robot hands. The connecting rod type variable grasping force cooperative self-adaptive finger device comprises a plurality of finger sections, a plurality of joint shafts, a plurality of reed pieces, a tendon rope, a plurality of driving rods, a plurality of driven rods, a plurality of connecting rods, a plurality of poking rods, a plurality of poking pieces and the like. The connecting rod type variable grasping force cooperative self-adaptive finger device utilizes a motor, a transmission mechanism, the poking pieces, the poking rods, the driving rods, the driven rods, the connecting rods, a stay cord piece, the tendon rope, the reed pieces and the like to comprehensively realize the functions of grasping a plurality of joints in a self-adaptive manner and continuously locking the joint, is used for grasping an object, can automatically adapt to the shape and size of the object, can lock or not lock the joints after grasping the object, is rapid and stable in the grasping process, locks the joints after grasping the object to prevent fingers from unstability due to springback, can provide greater grasping force, and is variable in grasping force, simple in structure, small in size, light in weight, easy to control, and low in design, manufacturing, assembling and maintaining cost; the locked joint angles are continuous.

The present invention provides an active data type for use in a computer program. The active data type has an identifier and at least one algorithm associated therewith. The identifier is utilized by the computer program to identify the instance of the active data type. The algorithm is configured to be automatically executed when an attempt to access a value associated with the active data type instance is made by a routine or otherwise. When a particular routine that uses an instance of the active data type attempts to access the value associated with the active data type, the algorithm determines the value associated with the active data type before the routine obtains access to the value. The active data type may be a real, an integer, or a string, for example. The algorithm automatically determines the current value associated with the active data type instance. Preferably, the active data type has an identifier, a first algorithm and a second algorithm associated therewith. The first algorithm preferably automatically determines the current value of the instance of the active data type when a routine that utilizes the value of the active data type instance attempts to access the value. When the value of the instance of the active data type is set, the second algorithm preferably automatically post-processes the value to which the active data type instance has been set. A locking/unlocking mechanism sets the value of the active data type instance prior to the first algorithm invoking the particular routine, suspends active data type algorithm processing while the routine executes, and processes the value of the active data type instance using the second algorithm once the routine has returned in order to post-process any changes to the value of the active data type instance.

A method and an apparatus to execute a code compiled from a source code to access an untyped variable are described. An optimized access code may be compiled in the code with speculative optimization via a type prediction of runtime value of the untyped variable. Invalidity of the type prediction may be dynamically detected for future runtime values of the untyped variable. The code may be updated with an access code compiled for the access without the speculative optimization based on the invalidity detection. The updated code can be executed for the access to the untyped variable without executing the optimized access code.

The invention relates to electric control damp technology of the damper. It can be applied to suspending frame of car whose damper needs to change along with the driving condition. The invention has a quick electromagnetic valve and pressure limiting valve controlled by the electromagnetic valve, and the piston flow valve and the bottom valve of the traditional damper are changed into a single one-way valve which only permits the oil flow upwards. The design can make the oil flow upwards, thus, the adjustment to the compressing damp and the extending damp can be realized through the single control to the pressure limit valve switch. In order to consider the demands to the damp intensity of the damper of all driving conditions (load, road state, speed, lengthwise acceleration speed and transverse acceleration speed, and so on) and the aim of driver, the invention provides a microprocessor to receive the driver's aim signal and driving conditions, and carries on synthesis logic analysis to the signal and sends out electromagnetic valve output instructions, in order to realize the control to the resistance to the damper.

The invention discloses a symmetric type variable stiffness flexible actuator based on a variable supporting point. The symmetric type variable stiffness flexible actuator comprises a power input mechanism, a power output mechanism and two stiffness adjusting structures. The two stiffness adjusting structures are symmetrically arranged along the center of the power output mechanism; and a gear with an Archimedes spiral curve groove is used to adjust the supporting point and change the length of the arms of force of levers. A large range of stiffness adjustment can be achieved, the stiffness of the actuator can be adjusted from zero stiffness to complete rigidity, and the structure is more compact. The stiffness is changed by moving the supporting point, controlling is easier, and real-time synchronized adjustment of the output position and output stiffness of the actuator can be achieved.

A step type variable speed scanning method for accuracy control of laser bend forming belongs to the technical field of plastic forming. A laser coating material is coated on the scanning area of a surface to be scanned, a sheet material to be detected is clamped on one side, the scanning speed of the scanning area is determined by the diagram method to generate the step type variable speed scanning scheme corresponding to the scanning area, and finally the sheet material to be detected is scanned and processed according to the step type variable speed scanning scheme in a laser numerical control manner. The measure and check after processing are performed after the sheet material is cooled naturally. The method of the invention can effectively reduce the phenomenon of border effect, enhance the forming accuracy of the sheet material, thereby realizing the different energy output of the different heating area to balance the geometric constraint of the sheet material and improve the border effect.

The invention discloses an intelligent PWM (pulse-width modulation) intermittent spray type variable spraying controller. The variable spraying controller comprises a controller mother board, a power supply, an inverter, an electromagnetic valve driving circuit, an analog signal output channel, a vehicle speed detection device, a pressure flow detection device and a man-machine interaction device. A microcontroller with a PWM signal output function serves as a main control chip, various functional modules are combined, a sensor signal is acquired, spray rod pressure is rapidly and stably controlled, and multipath PWM signals are outputted. The controller has a stand-alone operating mode and an online operating mode, operating parameters are manually inputted through a man-machine interaction interface in the stand-alone mode, and the operating parameters are set by an upper computer in a communication manner in the online mode. The spraying controller is simple in system structure, high in applicability and applicable to accurate variable spraying of pesticides and liquid fertilizers, and independent variable spraying of a plurality of sprayers can be realized.

The invention discloses a single-cam-shaft switch pivot type variable-mode air valve driving system, and belongs to the field of engine valve driving, cylinder deactivation and auxiliary braking. The single-cam-shaft switch pivot type variable-mode air valve driving system comprises an exhaust valve assembly, an exhaust braking cam, an exhaust driving cam, an air intake driving cam, an air intake braking cam, an exhaust braking rocker arm, an exhaust driving rocker arm, an air intake driving rocker arm, an air intake braking rocker arm, an exhaust braking pivot assembly, an exhaust driving pivot assembly, an air intake driving pivot assembly, an air intake braking pivot assembly and the like. By control over states of all pivots, four-stroke driving, two-stroke driving, cylinder deactivation and other modes are realized, thus fulfilling the aims of low oil consumption, low emission and efficient braking. The number of moving pieces is small, and the system is compact in structure, high in reliability, low in cost, low in energy consumption and leakage-free.

A feedforward type variable optical delay line comprises a plurality of Mach-Zehnder interferometers which are connected in series sequentially. One output end of the Mach-Zehnder interferometer at the present level is connected with an input end of the Maxh-Zehnder interferometer at a next level through a long waveguide, the other output end of the Mach-Zehnder interferometer in the present level is connected with the other input end of the Mach-Zehnder interferometer in the next level through a short waveguide, and a pair of variable optical attenuators are further arranged on the waveguides between each two Mach-Zehnder interferometers. In the feedforward type variable optical delay line, optical signals do not pass through a resonance structure in waveguide transmission, through switching of transmission paths of the optical signals, continuous adjustment with a certain standard delay amount as a delay unit is realized, at the same time, the variable optical attenuators are used for restraining crosstalk on the waveguides, and therefore delay bandwidth product is improved to the largest degree.

The invention relates to a 2-DOF flexible mechanical arm based on an antagonism type variable stiffness actuator. The 2-DOF flexible mechanical arm comprises a mounting base board, elbow joint driving devices, shoulder joint driving devices and a bionic arm, and the elbow joint driving devices, the shoulder joint driving devices and the bionic arm are arranged on the rear portion of the mounting base board correspondingly. The elbow joint driving devices and the shoulder joint driving devices are based on the antagonism type variable stiffness actuator, so that stiffness is variable when two shafts of two flexible mechanical arms are driven. In application occasions relating to man-machine interaction, the stiffness can be changed with working scenes, the safety of operators is sufficiently improved, and the 2-DOF flexible mechanical arm is of profound significance in research and development of service-oriented robots.

The invention relates to an umbrella type variable gauge inflate tool for an expansion tube, which comprises a fixing cone and a variable gauge cone. The fixing cone has a conical through-hole structure with narrow upper side and wide bottom. The variable gauge cone comprises a base plate, a variable gauge conical sheet and an expansion tip cone. The variable gauge conical sheet comprises a first conical side, a second conical side and an expansion conical side; the expansion tip cone has a conical structure with narrow upper side and wide bottom; the top end is placed in the through hole of the expansion conical sheet; and a conical angle of the expansion cone side is equal to the conical angle of the expansion tip cone. The inflate tool has a plurality of expansion conical sheets combined on the base plate. When expanding, under the action of hydraulic power, the expansion conical sheets expand on radial direction along the tip conical side of the expansion tip cone so as to vary the gauge of the inflate tool. When the expansion conical side becomes an upright side, the outer diameter of the inflate tool reaches to the maximum value. The invention has the advantages that the variable cone of the inflate tool can realize variable gauge expansion under the action of an external force, the expansion volume of the tube is greatly increased, the well diameter utilizing ratio is increased, the structure is simple, the processing is convenient, the expansion force is small, and the tool is suitable for being used in various sleeves and barefoot wells with regular well walls.

The invention discloses a self-rising deformable removable integral lifting steel platform system for ultrahigh varying-layer plane construction and the construction method thereof, comprising steel platform, plate lifter, flexible steel column, hanging staging and bearing pin, where the hanging staging is fixed with the steel platform, the steel platform is deformable and comprises primary and secondary beams, the junction of the two beams is provided with a rolling device, the secondary beam can take the primary beam as orbit to move relative to the primary through the rolling device. The invention uses the various construction columns installed in core tube sharing walls as support and climbing guide rails, uses the plate lifter as power, lifts the whole steel platform system by lifting screw rods connected with the steel platform, and arranges trolleys on partial secondary steel beams to make them able to move inward along the primary steel beam to the preset position at last, and completes the plane deformation of the steel platform and meets construction requirements for the core tube variation.