2963results about How to "Avoid drifting" patented technology

A motion tracking system for tracking an object composed of object parts in a three-dimensional space. The system comprises a number of magnetic field transmitters; a number of field receivers for receiving the magnetic fields of the field transmitters; a number of inertial measurement units for recording a linear acceleration; a number of angular velocity transducers for recording angular velocities. The system further comprises a processor for controlling the transmitters and receiving signals coming from the field receivers and the inertial measurement unit; which processor contains a module for deriving orientation and/or position information of the constituent object parts of the object on the basis of the received signals. The processor is configured for intermittently controlling the transmitters transmit at a predetermined frequency, wherein the position and/or orientation information is derived by periodically calibrating the motion information coming from the inertial measurement unit with the motion information coming from the magnetic field receivers.

Configuration drift refers to changes made over time that cause a computer or service to deviate from a desired configuration. Configuration drift of a group of machines can be managed by defining configuration intent. Intent is defined by defining a configuration baseline comprised of a collection of related configuration rules. Configuration rules include settings, and targets which can be any managed entity that enables reporting of non-compliance at a more granular level. A configuration baseline can be completed by reading configuration rules from one or more well-configured computers. Configuration drift is assessed by comparing actual values to the configuration baseline values and is reported at a managed entity level instead of at a machine level. Remediation, returning the computer to a state of compliance with the configuration baseline, can be performed on demand. Remediations performed over time are retained and applied to a new instance of the service to eliminate configuration drift on the new instance.

The invention provides a digitalized alternating-current voltage and speed regulation device. The digitalized alternating-current voltage and speed regulation device comprises an input signal interface circuit and an output signal interface circuit of a power circuit, a pulse trigger circuit, a key and menu display circuit and singlechips ATmega128 and ATmega8. According to the requirements of the present market and the on-site use environment, a full-digital voltage and speed regulation system is developed based on the original analog quantity voltage and speed regulation system. The system has the following basic functions: (1) due to digitalized control, the stability of the system is enhanced, and drifting of parameters due to null shifting of an amplifier and vibration of a potentiometer can be avoided; 2) the system is convenient to debug, the parameter can be directly input by using a personal computer (PC) through a human-machine interface or the parameter can be configured bya shortcut key of a control panel, the operation is quick and the debugging time can be shortened; 3) the human-machine interface monitors working states such as current, voltage, speed and the like during running of a motor in real time; and 4) by fault self-diagnosis and memory monitoring functions, the control panel displays a type code of a fault when the system is faulted, so that a user canfind out the fault conveniently.

A capacitive microphone and method for making the same are provided. A backplate with a plurality of holes is formed on a substrate with at least one cavity, and a diaphragm is formed above the backplate. There is an air gap between the backplate and the diaphragm. The air gap and the cavity communicate with each other by each hole. The diaphragm and the backplate are separated by a first distance and a second distance which is smaller than the first distance, such that the difference is formed on the diaphragm. The second distance area is fastened through surface stiction produced by mist or other fluids.

An invention regarding traffic management is disclosed. A system that tells motorist how fast to go in order to make it through a traffic signal while it is green serves one or more lanes in one or more directions. A Fast Lane On Warning (FLOW) sequencer is in synchronization with traffic phases sequencer (sequencing Red, Green, Yellow, Left Turn and the like) with both sequencers having service cycle period Pi but with start times of both sequencers offset from one another. The FLOW sequencer outputs data, particularly status of signal or “Signal Phase And Timing: SPAT” through wireless means to a mobile receiver/calculator/readout aboard the approaching vehicle. The receiver/calculator/readout also receives data of its location or whereabouts, particularly its distance to the intersection. The receiver calculator readout processes the two incoming data types considering “distance” and “time left” and gives an output of digital, graphic, audio or the like as to how fast the motorist should go to make it through during green.

The invention discloses a photocuring and thermocuring conductive adhesive, which is prepared by mixing photosensitive high polymer, diluent monomer, conducting particles, photoinitiator, polymerization inhibitor, epoxy resin, epoxy active diluting agent, latent curing agent and latent promoting agent, grinding the mixture, and stirring and dispersing in a planetary manner. The curing temperature of the product is low, and deep curing can be realized; after being cured, the adhesive has high adhesiveness and high solvent resistance; and the adhering strength is high, the resistivity is low, and the requirements of microelectronic packaging technique for LED chips, liquid crystal materials, glass substrates, thin film circuits, PCB circuit boards and the like can be met.

The invention discloses a vacuum expendable pattern casting (V-EPC) molding method of large complex castings. A flask for molding comprises three parts including flask bottom, a flask body and an up draught pneumatic hoist press bar; each part is provided with an independent vacuum air duct. The molding procedures comprise the following steps: filling sand and carrying out vibrating molding on the bottom of the expendable pattern, turning over the flask, removing a supporting plate and a tire plate rack and placing the up draught pneumatic hoist press bar, filling the sand, exerting pressure for vibrating molding, sealing the flask and carrying out pouring after vacuumizing. The parts with blind holes and grooves are filled with resin sand and core irons and a floating crane is employed to fix the core irons; local compaction is carried out on loose parts. Being adopted, the method of the invention ensures compact and uniform molding sand, solves the difficult problems frequently appearing in the process of V-EPC of large castings, including sand crushing, sand drop, sand inclusion and deformation, can ensure the accuracy of the blind holes, deep grooves and entire castings, can enable the pattern to be almost free from floating and deformation in the process of vibration and can produce high quality large complex castings.

The invention relates to a device and a method for continuously measuring the arrival time of a photon sequence. The device comprises a single photon detector, a preamplifier, a constant ratio discriminator, an atomic clock, a counter, a time-to-digital converter, a controller, a memory unit and a computer, wherein the output end of the constant ratio discriminator is connected with the controller; a square-wave pulse output by the atomic clock is used as a counting object of the counter and is transmitted into the time-to-digital converter; the rising edge of the square-wave pulse is used as a start signal of the time-to-digital converter, and the rising edge of a digital pulse signal is used as a stop signal of the time-to-digital converter; and the control end of the controller is respectively connected with the counter, a digit converter and the memory unit and used for controlling the synchronous storage of rough measuring time and fine measuring time into the memory unit. The invention solves the technical problems of continuous measurement incapability, narrow measurement range and limited application range of a traditional photon sequence arrival time measuring device, and the device has a wide measurement range and high accuracy in measuring the photon arrival time.

A friction control mechanism for an articulating arm including an arm, a pivot connector, an axial washer, and at least one set screw. An axial washer is placed around each side of a center aperture in the pivot connector. The pivot connector is connected to the arm with a pivot pin through the center aperture in the pivot connector and aligned holes in the first and second sides of the arm. At least one threaded hole is located adjacent the aligned hole in the first side of the arm. A set screw is placed through each threaded hole, making contact with the axial washer. This contact creates a friction force between the pivot connector and the axial washer, keeping the articulating arm from drifting away from its set position. The pivot connector may be connected to another device such as another arm or a machine such as an x-ray machine, or to another pivot connector.

The invention discloses an improved textile machine with a dust removal function, which comprises a machine frame, wherein a dust removal box is fixedly connected to the side wall at the upper end ofthe machine frame, a first filter screen and a second filter screen are symmetrically connected to the inner wall of the dust removal box in a sliding manner, and a shaking device for shaking the first filter screen and the second filter screen is mounted in the dust removal box. By the arrangement of a connecting rod which is connected to the inner wall of the dust removal box in a rotary manner,the rotation of the connecting rod enables bristles on the side wall of a transverse plate to clean the first filter screen, due to the arrangement of magnetic semi-discs and magnets, the first filter screen can reciprocate and shake when the connecting rod rotates, so that the cleaning of the first filter screen is accelerated; and by the arrangement of arc-shaped blocks attached to glass blocks, static electricity is generated by friction between the glass blocks and the arc-shaped blocks when the connecting rod rotates, and fine dust escaping from mesh holes of the first filter screen is cleaned, so that the fine dust is prevented from floating into the air to affect the working environment of workers and cause harm to the health of the workers.

The invention provides a gate driving circuit which includes m levels of serially connected shifting registers. Each level of shifting register includes a first resetting end, a first input end and an output end. A first resetting end of a first-level shifting register in the m levels of shifting registers receives resetting signals so as to enable the first-level shifting register to reset before scanning. Shifting registers from a second-level shifting register to an ith-level shifting register reset before the scanning. A first resetting end of an nth-level shifting register is electrically connected to an output end of an (n-1)th-level shifting register so as to receive output signals of the output end of the (n-1)th-level shifting register. The output signals of the output end of the (n-1)th-level shifting register control the nth-level shifting register to reset before the scanning, wherein all of I, m and n are positive integers and m>3, 2<=i<=m/2, i<n<=m, and n<=m. The grid driving circuit reduces or eliminates poor display phenomena such as high-temperature jittering and start-up grainy screen and the like so that the display effect is improved.

The invention provides a method and a system for preventing bias flowing of a refrigerant in a multi-split air conditioner and the multi-split air conditioner. The method for preventing the bias flowing of the refrigerant in the multi-split air conditioner comprises the steps of obtaining the superheating degree of each indoor heat exchanger; comparing the obtained superheating degree with the target superheating degree, adjusting the open degree of an expansion valve when the obtained superheating degree is not equal to the target superheating degree, and enabling the superheating degree of each indoor heat exchanger to tend to be equal to the target superheating degree; correcting the target superheating degree if the superheating degree of each indoor heat exchanger is still not equal to the target superheating degree when the maximum time for adjusting the open degree of the expansion valve is up to a preset time, and then adjusting the open degree of the expansion valve according to a comparison result of the superheating degree of each indoor heat exchanger and the corrected target superheating degree. According to the method for preventing the bias flowing of the refrigerant in the multi-split air conditioner, provided by the invention, the engineering installation situation and the actual load of indoor units are comprehensively considered, the open degree of an electronic expansion valve can be intelligently controlled, the bias flowing of the refrigerant is reduced, and the refrigerating effect of the indoor units is balanced.

The invention discloses a power public opinion predicting method and device supporting risk assessment. The method comprises the steps that a universal resource locator URL, a website name and a search keyword of a website to be crawled are received, and the search keyword are expanded and updated; webpage crawling is carried out, and the webpage content is extracted from the crawled webpage; thewebpage link and the link anchor text are extracted; a pheromone-based webpage link selection method queues the priority of the webpage link, and a next webpage link is accessed according to the priority queue; the webpage contents of all webpages to be analyzed are acquired; according to the lexicon and word group of a dictionary, webpage content word segmentation is carried out; key words are extracted; the same key words are removed from the webpages; the corresponding key word popularity is provided according to the repetition degree of the key words among the webpages; based on an optimized BP neural network algorithm, a power service public opinion risk assessment model is built to realize public opinion risk assessment; and the result is pushed to a client to complete power information public opinion monitoring.

The invention discloses a gas detection method based on the self-adaption of a semi-supervised domain. The gas detection method comprises the following steps: preprocessing gas data signals acquired by a gas sensor; constructing a feature subspace by virtue of the preprocessed signals; establishing a combined kernel function according to the constructed feature subspace; selecting label-free samples in a target domain; and training a classifier according to the selected label-free samples in the target domain, and carrying out gas identification according to the trained classifier. According to the gas detection method, a selection strategy for the label-free samples in the target domain is provided by constructing the self-adaptive kernel function of the domain according to the time sequence characteristic of the data of the gas sensor, and thus the data and drifting of the gas sensor can be effectively processed; the new kernel function not only considers that the subspace adjacent to a source domain and the target domain deserves larger weight, but also considers the middle data between the source domain and the target domain, and the drifting of the gas sensor is described by virtue of a Grassmann geometrical flow pattern, so that the influence of the drifting on the gas detection and identification is effectively avoided.

The invention relates to a crushing device, in particular to a large stone crushing device for road construction. The technical problem to be solved by the present invention is to provide a large-scale stone crushing equipment for road construction with low efficiency, good effect, time-saving and labor-saving. In order to solve the above technical problems, the present invention provides such a large-scale stone crushing equipment for road construction, which includes a bottom plate, a left frame, a top plate, a lifting device, a lifting rod, a first pressing plate, crushing teeth, a water delivery device, a first One-way valve, hose, swing device, nozzle, etc.; the left frame is welded on the left side of the top of the bottom plate, the top plate is welded on the top of the left frame, the lifting device is installed in the middle of the bottom of the top plate, the bottom of the lifting device is connected with a lifting rod, and the bottom of the lifting rod is welded There is a first platen. The present invention controls the operation of the lifting device to drive the pressure plate and the crushing teeth to move up and down continuously to crush large stones, and the knocking device cooperates with the first spring to shake the large stones in the crushing frame.

To provide a crawl apparatus preventing a crawl from being drifted or broken and stably carrying out culturing even under severe conditions such as installation in a water area at a high water current speed or rough seas or stormy weather by, as necessary, arranging the crawl on or in the water and to provide a method for culturing in the crawl. The apparatus is equipped with the crawl 12, a buoyancy means 16, as necessary, changing and setting the position of the crawl in an optional sinking position on and in the water while supporting the the crawl 12 on or in the water with buoyancy and mooring means 14 for suppressing planar movement of the crawl 12 and mooring and supporting the crawl. For example, the apparatus is designed to locate the crawl 12 in water with relatively calm waves and float the crawl 12 on the water during operation such as feeding. Thereby, the crawl 12 can be used without being broken even in the open sea, etc., with violent waves and culturing in the crawl can stably be carried out. (C)2004,JPO.

The invention relates to a focusing relevancy ordering method for a vertical search engine. Aiming at the problem that a focused crawler cannot pass through a dark tunnel, the invention improves a focused crawling strategy of the focused crawler by using an on-line learning method and utilizing an auxiliary function, so as to lead the focused crawler to capture subject data with higher relevancy. A PageRank algorithm and an improved algorithm thereof are studied, the webpage clicking action of a user is modeled, and the transferring way of a PageRank value among links is improved, so as to put forward the improved algorithm. As to the disadvantage that the dimensionality of a feature extraction model of webpage weight is over high, a user-defined method of the webpage weight is put forward, so as to define a factor of the webpage weight and measure the weight of the factor of the webpage weight according to the divisibility criterion, thereby providing an evaluation function of the webpage weight and effectively lowering the dimensionality of a webpage feature space. By utilizing the method in the invention, the user can obtain a high-quality search result set when using a subject resource search engine system.

The invention discloses a method for estimating a body posture angle of a humanoid robot in real time, which comprises the following steps of: first establishing a kinematics model of a robot posture; then establishing a noisy linear discrete random system model according to the kinematics model of the robot posture, estimating the posture state of the robot based on the acceleration data of a triaxial accelerometer, the angular velocity data of a three-axis gyroscope and the three-dimensional force data of a six-dimensional force/torque sensor by utilizing a corresponding Kalman filtering method; and obtaining the actual posture angle of the robot according to the estimated posture information of the robot, thereby correcting the current posture of the robot. By the method, the shortcomings of drift of an angular velocity integral and relatively narrower measurement range of the conventional linear method are overcome, and the real-time accurate posture estimation of the humanoid robot is realized.