657results about How to "Eliminate bad effects" patented technology

A substrate transporting and processing system generally comprises: a supply section of a carrier 1 for housing therein wafers W to be processed, in a horizontal state; a discharge section of the carrier 1; a wafer unloading arm 14 for unloading the wafers W from said carrier 1; a wafer loading arm 16 for loading the wafers W into the carrier 1; an attitude changing unit 40 for changing the attitude of the wafers W between a horizontal state and a vertical state; a processing section 3 for suitably processing the wafers W; and a wafer transport arm 56 for delivering the wafers W between the attitude changing unit 40 and the processing section 3 and for transporting the wafers W into and from the processing section. Thus, after the wafers W housed in the carrier 1 in the horizontal state are unloaded and the attitude of the wafers W is changed into the vertical state, suitable processes are carried out, and the attitude of the wafers W is changed in the horizontal state after processing, so that the wafers W can be housed in the carrier 1. Thus, it is possible to decrease the size of the whole system to improve the throughput and to improve the yield of products.

An active noise cancellation device is described that is capable of cancelling an ambient sound wave in an open air environment via destructive interference. The active noise cancellation device comprises a directional microphone, a directional loudspeaker, and a signal processing module. The directional loudspeaker can comprise either one or two dipole loudspeakers in combination with a sealed loudspeaker. Multiple active noise cancellation devices can be arranged in arrays to create open air active noise cancellation systems. Each active noise cancellation device within the array, when combined with the outputs of the other devices within the array, produces a noise cancellation wavefront that actively cancels a portion of an ambient sound wavefront. Arrays of any geometry or spatial dimension are possible.

A USB device enumeration process implemented in a USB device is described. The USB device first detects a type of the operating system (OS) of the USB host connected to the device, and performs device enumeration using a process selected from multiple stored processes based on the detected host OS type. To detect the host OS type, the USB device first presents itself to the host as a USB MSD or HID, performs device enumeration to collect OS behavior factors from the host, and determines the OS type from the OS behavior factors. Thereafter, the USB device performs actual device enumeration by presenting itself as the USB device it actually is, using an enumeration process specific to the detected host OS type. The multiple stored enumeration processes are customer configurable. Further, a method is provided to stop an enumeration process when the host is in a BIOS stage.

A buck-boost switching regulator which includes a first switch, a first diode, an inductor, a second switch, a second diode, and a controller for controlling the first switch and the second switch, the controller being configured to receive a current signal indicative of a inductor current flowing in the inductor, and generating a signal indicative of an average current flowing in the inductor, the average current being utilized to control the first switch and the second switch, wherein the controller includes a first compensator circuit for outputting a voltage error signal, a second compensator circuit for outputting a current error signal and a modulator circuit to output a first control signal to control the first switch and a second control switch to control the second switch.

The invention relates to a brake-by-wire system of an automobile and belongs to the technical field of automobile brake systems. In the brake system, a vacuum booster of the traditional vacuum booster hydraulic brake system is replaced with a motor, and a piston in a brake main cylinder is pushed to move to generate brake hydraulic pressure, so that dependence on vacuum degree of an engine is canceled; through the adoption of a pedal simulator, influences on feelings of a brake pedal during coordinated control of feedback and brake are eliminated; a hydraulic control unit of the traditional brake system is kept to implement hydraulic adjustment; and as a standby hydraulic brake system is integrated, braking with certain strength can be implemented by a driver under a situation that the power supply of the system is ineffective. Compared with the traditional distributed brake-by-wire scheme, the brake-by-wire system provided by the invention has the advantages as follows: the structure is changed when compared with the structure of the traditional vacuum booster hydraulic brake system, the system can be mounted on the automobile more conveniently, and more existing technologies in the traditional brake system can be succeeded in the control aspect.

The invention relates to a PCB (printed circuit board) back drilling method. The PCB back drilling method comprises the following steps: fixing a PCB on a machine table, and mounting a drill bit on a drilling machine; selecting a target layer, and determining an actual control depth h1 of the target layer; and determining a back drilling control depth h of the PCB according to the actual control depth h1 of the target layer and a preset safety length M of a stub and controlling the drill bit to drill a hole drilling machine control system. According to the PCB back drilling method, influence of thickness uniformity of the board, cone height of a drill tip and copper/ tin-plating process variation on the accuracy of the control depth can be reduced; and through introduction of the safety length M of the stub, the precision of the PCB back drilling control depth h can be effectively controlled, thus achieving precision control of the stub and eliminating adverse effects of the stub on a signal.

The invention relates to a terminal area prevailing traffic flow recognizing method based on track spectral clusters. The method includes the steps of firstly, analyzing a given airport pavement to obtain flight path data, and conducting dividing to obtain feature track points and normal track points; secondly, setting up a space rectangular coordinate system; thirdly, putting forward an occupation degree concept according to the distance between a track and the center of a space grid, and enabling the occupation degree concept to be used for representing the occupation degree of the track in the space grid; fourthly, setting up an inter-track overall similarity model on the basis of a track partial similarity model; fifthly, constructing an Laplacian similarity matrix, and then analyzing the clusters through the spectral cluster algorithm; sixthly, conducting prevailing traffic flow recognition on the clusters obtained in the fifth step through the nuclear density estimation method; seventhly, displaying the recognition result in a displaying and interaction module. The terminal area prevailing traffic flow recognizing method has the advantages that a prevailing traffic flow track and an abnormal track can be simultaneously obtained through the spectral cluster algorithm, therefore, related personnel are assisted in scientifically and reasonably planning a terminal area and improving airport entering and leaving air lines, and the capacity of the terminal area is improved.

The invention discloses a synthetic method for gel-based water-retained slow-release urea fertilizer, mainly comprising the following steps: 1) acrylic monomer is neutralized with 20% potassium hydroxide solution, obtaining a mixed monomer solution with twenty-five percent neutralization degree; 2) the mixed monomer solution is gauged and added into an aqueous urea, forming a polymerization mixed liquid; 3) a cross-bonding agent is added on the condition of heat-preservation stirring, and then a radical initiator is added after agitating the awaiting cross-bonding agent to dissolve; 4) a water gel is generated when the of polymerization is generated on the condition of heat-preservation stirring; 5) the gel-based water-retained slow-release urea fertilizer is crushed, dried, grinded, screened and packed. The synthetic method for gel-based water-retained slow-release urea fertilizer has the advantages of no-use of organic solvent, no solvent recovery problem, simple craft and lower cost.

Production of aquaculture water for marine fauna and flora, prepared by seawater disinfected by electrolysis in an electrolytic treatment system and neutralized with a neutralization agent to eliminate deleterious effects to growth of microalgae.

A joystick control device having cursor correcting function, in which the conventional adjustable resistor is replaced by a photoelectric element for detecting the movement of the joystick, thereby eliminates the ill effects caused by mechanical attrition of resistor. Additionally, the parameter drifts caused by IC manufacturing processes are corrected using shift correction of joystick; therefore, every individual mass-produced IC shows similar good behavior.

A semiconductor dynamic sensor such as an acceleration sensor is composed of a sensor chip having electrodes movable in response to acceleration applied thereto and a circuit chip having a circuit for processing signals fed from the sensor chip. The sensor chip and the circuit chip are contained and held in a packaging case. The sensor chip and the circuit chip are fixedly connected via an adhesive film. The sensor chip is correctly positioned on the circuit chip without creating misalignment relative to a sensing axis, because the adhesive film from which an adhesive material does not flow out under heat is used. A semiconductor wafer including plural sensor chips is first made and the adhesive film is stuck to one surface of the wafer, and then individual sensor chips are separated by dicing. The sensor chip is connected to the circuit chip via the adhesive film.

The invention discloses pipeline steel with good and stable low-temperature flexibility and a method for rolling hot rolled coils thereof. The pipeline steel comprises the following compositions in percentage by weight: 0.03 to 0.070 percent of carbon, 0.19 to 0.30 percent of silicon, 1.50 to 1.90 percent of manganese, 0.010 to 0.020 percent of titanium, 0.015 to 0.040 percent of aluminum, less than or equal to 0.30 percent of nickel, less than or equal to 0.02 percent of chromium, less than or equal to 0.0002 percent of boron, less than or equal to 0.018 percent of phosphorus, less than or equal to 0.005 percent of sulfur, 0.002 to 0.003 percent of calcium, 0.20 to 0.40 percent of molybdenum, less than or equal to 0.30 percent of copper, 0.02 to 0.10 percent of niobium, less than or equal to 0.006 percent of nitrogen, less than or equal to 0.004 percent of oxygen, less than or equal to 0.00025 percent of hydrogen, and the balance of iron and impurities. The manufactured pipeline steel has the characteristics that sigma s is equal to be between 565 and 580 MPa; sigma b is equal to be between 665 and 690 MPa; and sigma s/sigma b is less than or equal to 0.85.

The invention discloses a coupler synchronous type double-horizontal shaft vibration stirring machine, which comprises a machine frame and a vibration stirring device installed on the machine frame. Stirring drive and transmission devices are arranged at the left end of the vibration stirring device. Vibration drive and transmission devices are arranged at the right end of the vibration stirring device. The stirring drive and transmission devices and the vibration drive and transmission devices are installed on the machine frame. The vibration stirring device comprises a stirring cylinder and two stirring mechanisms. Both the two stirring mechanisms comprise hollow stirring shafts and a plurality of stirring units. The two stirring drive and transmission devices are respectively installed at the left ends of the two hollow stirring shafts. Synchronous couplers are installed between the two stirring drive and transmission devices. The two vibration drive and transmission devices are respectively installed at the right ends of the two hollow stirring shafts and respectively and fixedly connected with two vibration shafts. The coupler synchronous type double-horizontal shaft vibration stirring machine disclosed by the invention is simple and rational in structure and convenient for use; and mixed materials can be uniform in macroscopic and microscopic manners during a short time, thus, the stirring quality and the stirring efficiency are increased.

The invention discloses a complex industrial process data modeling method based on a dynamic convolutional neural network. The method comprises the following steps: process variables with strong correlation with industrial process objective variables are selected, and through sampling, a time sequence for each process variable is obtained; an equal depth box plot is used to carry out abnormal point detection and elimination on the time sequences, and a linear interpolation method is then used for filling; the time sequence for each process variable in a former process time delay range at the sampling moment of the objective variable is extracted, a two-dimensional matrix containing dynamic characteristics of the process is formed, and picture samples are formed; and the dynamic convolutional neural network is built to analyze the dynamic characteristics of the industrial process data, the time and space relation of each sensitive variable is recognized automatically, and a prediction model for the objective variable is built. A large amount of historical data accumulated in the actual production process field is used, a data model of predicting an unpredictable objective variable by using a predictable process variable is built accurately, and an important role is played in online production process evaluation, dynamic adjustment and even energy conservation and emission reduction.

The invention provides an austempered ductile iron adjusting chemical component. The chemical component uses Mn and Si as a base to substitute Mo and Ni, and contains a plurality of elements comprising Cu, B, Nb and Cr to realize low and micro alloying, so the respective effects of all elements are fully performed, the interactive effect promotion is realized, the hardenability is increased, the alloy consumption is reduced, and the cost is reduced. The invention also provides a new austempered ductile iron quenching technology matched with the austempered ductile iron. The technology is a step austempering technology using step quenching oil and an air isothermal furnace. The heat treatment of a workpiece through the technology realizes crystal grain refinement, good hardenability, high strength and toughness, low hardness (HB190-240) before the step austempering treatment, and good processing performances; and the obtained processed austempered ductile iron has a high hardness (HRC35-56) and extremely less oxidation and deformation, so the precision is guaranteed, and finishing treatments comprising grinding and the like are not needed. Compared with traditional nitrate bath austempering technologies, the austempered ductile iron quenching technology has the advantages of low cost, no generation of large amounts of harmful substances comprising nitrite or the like, low pollution and safety.

The invention belongs to the technical field of digital image intelligent processing, and particularly relates to a multi-modal feature fusion text-guided image restoration method. The method sequentially comprises the following steps that: a network takes a defect image and corresponding text description as input, and is divided into two stages: a rough repair stage and a fine repair stage; in the rough restoration stage, the network maps the text features and the image features to a unified feature space for fusion, and generates a reasonable rough restoration result by using prior knowledgeof the text features; in the fine repair stage, the network generates more fine-grained textures for the rough repair result; reconstruction loss, adversarial loss and text-guided attention loss areintroduced into network training to assist the network in generating more detailed and natural results. Experimental results show that the semantic information of the object in the missing area can bebetter predicted, the fine-grained texture is generated, and the image restoration effect is effectively improved.

The invention discloses a single-phase inverter finite time control method based on a disturbance observer. The method comprises steps: a disturbed state space average model for the single-phase inverter is built; with the tracking error value between the voltage actually outputted by the inverter and reference voltage as a state variable, influences of lumped disturbance are also considered, an error dynamic model for the single-phase inverter is built, and a finite time disturbance observer is designed; output of the observer serves as feedforward compensation and is combined with an output feedback control method, a finite time anti-disturbance controller based on the finite time disturbance observer is designed; and according to the finite time anti-disturbance controller, control on the output voltage of the single-phase inverter is realized. thus, quick and accurate tracking on the reference output voltage of the single-phase inverter in a finite time and accurate compensation suppression on multisource disturbance and uncertainty can be realized, the anti-disturbance ability of the system is improved, the system cost is reduced, and the fault-tolerance performance of the system is improved.

The invention relates to a preparation method of a plastic woven bag. The invention aims at solving the problems of poor bursting strength, poor tearing strength and poor tensile strength of an existing plastic woven bag taking a polypropylene material as a base fabric. The preparation method comprises the following steps: 1, preparing a mixture from a coating plastic coated alloy additive, an LLDPE (linear low density polyethylene) resin, a PP (propene polymer) resin antioxidant and an ultraviolet light absorber; 2, extruding the mixture by using an extruder and cooling and forming to obtain a coating woven fabric used for producing the woven bag; 3, putting the coating woven fabric used for producing the woven bag into a screw extruder and extruding to obtain ribbon-like filaments of the coating fiber of the woven bag; 4, using a cylinder loom to woven the ribbon-like filaments of the coating fiber of the woven bag through a flat die method, and sequentially cutting, tailoring and sewing to obtain the plastic woven bag. The preparation method of the plastic woven bag is mainly used to prepare the plastic woven bag.