57results about How to "Accelerate Design Cycle" patented technology

An exemplary CAD design flow modifies an existing large scale chip layout to reinforce the redundant via design rules to improve the yield and reliability. The flow operates on each metal-via pair from bottom up to locate and correct isolated via rule violations by adding metal features and vias in a respective patch cell associated with each cluster cell. A large complex design is thus divided into cells so that multiple processes can work concurrently as if every process were working on the top level of the design layout.

The invention discloses a determination method of network side harmonic current of a high-voltage direct current power transmission system. The determination method comprises the following steps: if the harmonic current voltage at a direct current power transmission line inlet is zero, decoupling and equalizing a rectifying side and an inverting side into a plurality of independent six-pulse moving bridge units; dividing a work period of the six-pulse moving bridge units into six phase converting sections and six non-phase converting sections; calculating a phase converting overlapping angle of each phase converting section; equalizing a current converter into a harmonic current voltage source containing internal resistance; calculating the direct current side harmonic current according to the concrete forms of a smoothing reactor and a direct current filter; obtaining valve side harmonic current according to an equivalent circuit of the current converter; and converting the valve side harmonic current to a network side according to a connecting structure of a transformer to obtain the network side harmonic current. The invention considers background harmonic current and other nonideal factors, and can quickly and accurately obtain the harmonic current at the network side of a converter transformer, accelerate the period for designing an alternating current filter in the high-voltage direct current power transmission engineering and improve the design quality and the design efficiency.

An automated analog layout tool creates not just one, but many electrically correct layouts from an input schematic. Designers can explore multiple layout options in a fraction of the time needed to produce just a single layout by hand. Because the tool produces layout results so quickly, parasitics are available for simulation early in the design process, further speeding the entire design cycle. The tool considers place and route concurrently.

The invention relates to a circuit design criteria and a realization method for a three-dimensional structure phase transition memory chip. In order to utilize the memory area to a maximum extent, the invention requires that the whole memory chip is studded with memory arrays. The circuit structure provided is an optimization proposal aiming at the characteristic that the whole memory chip is studded with the memory arrays. The invention has the advantages that the whole memory chip can be studded with the memory arrays. In order to realize the advantage, firstly, peripheral circuits under the memory arrays are divided reasonably; secondly, a set of solution proposal is provided for mutual control problem of the peripheral circuits after division; thirdly, a splicing proposal of the peripheral circuits is provided on the basis of the first step and the second step. Therefore, the three-dimensional structure phase transition memory chip is completely realized in the aspect of circuit design.

The invention discloses a four-axis blade measurement system and method. The four-axis blade measurement system comprises a four-axis computer numerical control (CNC) platform, a laser sensor, computer measurement software and a motion control card; the laser sensor is mounted on a Y-axis moving guide rail of the four-axis CNC platform through a fixture, and the relative position requirements between a measuring head and a blade profile are met through linear motions of X, Y and Z axes; a blade is mounted on a rotating table C axis of the four-axis CNC platform through a chuck, and the rotation motion of the rotating table C axis keeps a relative angle to a laser beam; according to a planned measurement path and measurement strategies, the profile data of the blade is obtained through position information fed back by a grating sensor and a saser sensor, coordinate system transformation and an MATLAB fitting algorithm. The four-axis blade measurement system and method disclosed by the invention can improve the blade measurement accuracy, have the advantages of being simple to operate and high in measurement efficiency, can be used for solving the technical difficulty of quick measurement on the blade and promote the production and the continuous development of a special blade measuring device.

An apparatus executes wire layout design in an integrated circuit. The apparatus includes a logic cell arrangement information acquisition unit which acquires information concerning a logic cell arrangement on a chip, a wire-grouping unit which estimates wires between logic cell terminals based on the acquired information and groups the estimated wires into each wire layer region, a via setting unit which sets via wire for pulling a logic cell terminal up to a wire layer region, a wire information extraction unit which extracts wire information for each of the wire groups and a routing execution unit which executes routing between the logic cell terminals for each of the wire layer regions based on the extracted information. A method for executing wire layout design in an integrated circuit includes acquiring information concerning a logic cell arrangement on a chip, executing wire-grouping, setting via wire for pulling a logic cell terminal up to a wire layer region, extracting wire information for each of the wire groups, and executing routing between the logic cell terminals for each of the wire layer regions based on the extracted information. The wire-grouping contains estimating wires between logic cell terminals based on the acquired information concerning the logic cell arrangement and dividing the estimated wires into each group of a wire layer region.

The invention discloses a structural vibration control method based on reinforcement learning, a medium and equipment. The method comprises the following steps: establishing a kinetic equation and a reward function of a controlled system; establishing and initializing a strategy network, a target strategy network, a value network and a target value network; establishing a playback pool; data interaction is achieved. Meanwhile, the control signal, the feedback signal and the reward signal are stored in a playback pool, the control signal, the feedback signal and the reward signal are provided for a reinforcement learning algorithm in a random sampling mode to update parameters of a strategy network and a value network, and a soft update mechanism is adopted to update parameters of a target strategy network and a target value network; obtaining a final strategy neural network as a controller; and deploying a controller, taking the feedback signal acquired by the sensor as the input of the neural network, and outputting a control signal after the forward calculation of the neural network to complete the control operation of the structural vibration. The invention provides a more intelligent control method for vibration control of a complex structure, and has excellent control performance and engineering practicability.

The invention relates to the piping field of a compressor of a fixed frequency air conditioner. The invention solves the problems that the piping mode analysis of the fixed frequency air conditioner can not be quantified and the natural frequency point of the pipe which is close to the operation frequency of the compressor can not be accurately judged according to the piping mode analysis, and a simulation evaluation method of the compressor piping vibration of the constant frequency air conditioner is presented. The main points of the technical scheme are as follows: firstly, the accurate finite element model of the compressor pipe is determined; secondly, the boundary conditions are applied to the finite element model and the modal analysis is carried out; then, whether the modal analysis result accords with the evaluation standard of piping modal analysis is judged, if so, the compressor pipe is trial-manufactured, otherwise, boundary conditions and load excitation are applied to the determined finite element model, and harmonic response analysis is performed; then whether the harmonic response analysis result accords with the piping harmonic response analysis evaluation criteria is determined, if so, the compressor pipe is trial-manufactured, otherwise, the finite element model is re-determined after pipe structure optimization.

An intelligent power module comprises an IGBT and an intelligent circuit. The IGBT is connected with the intelligent circuit. The intelligent circuit includes an external interface (10), a master controller (20), a drive circuit (30), a protection circuit (40) and a temperature sensor (50), wherein the external interface (10) is connected with the master controller (20), and the drive circuit (30), the protection circuit (40) and the temperature sensor (50) are respectively connected with the master controller (20); the master controller (20) is used for supplying working signals to the drive circuit (30) and receiving IGBT abnormal information fed back by the protection circuit (40), and the master controller (20) is further used for communication with a master control system of a user. The drive circuit (30) is connected with the IGBT and used for charging and discharging a grid electrode for the IGBT. The protection circuit (40) is connected with the IGBT and used for providing circuit protection for the IGBT. The temperature sensor (50) is used for detecting the temperature of the intelligent power module during the working process and feeding back the temperature to the master controller (20).

First, the method builds the new insertion loss model so as to obtain the amplitude information and the phase information of the insertion loss. Then, the design of equivalent electric circuit elements is carried out for the said information in order to embed the designed elements into entire design system to execute the system simulation. The invention shortens system design cycle greatly and raises accuracy of designs.

A method and apparatus for designing the wall thickness of a tower of a wind turbine generator system, and the design method includes: for each tower, an optimization algorithm is adopted to determinethe wall thickness of each section of tower separately, wherein the optimization objective of the optimization algorithm is to minimize the mass of each section of tower, and the constraint conditionof the optimization algorithm is that the safety factor of the ultimate strength, the safety factor of the buckling strength and the safety factor of the fatigue strength of each section of tower satisfy the preset safety margin value. In the method and apparatus for designing the wall thickness of a tower of a wind turbine generator system according to an embodiment of the present invention, bysetting the optimization objective of the optimization algorithm of the wall thickness of the tower to minimize the tower mass, and setting the constraint condition to be that the safety factor of ultimate strength, the safety factor of buckling strength and the safety factor of fatigue strength of each tower satisfy the preset safety margin value, so as to ensure the tower to realize the functions required to be realized and reduce the cost of the tower.

System, method, and program product analyze netlists for related electrical circuit designs by comparing predefined physical characteristics between the netlists. A baseline reference score is generated for one of the netlists and a normalized score is generated for the other netlist. The baseline reference score and the normalized score are used to generate a similarity score that is displayed on a display monitor. Preferably, the similarity score is displayed as a percentage.

First, the method builds the model of the new cross talk loss at far and near ends of twisted-pairs so as to obtain the amplitude information and the phase information of the return loss so that the result with more truthfulness is gotten. Then, the design of equivalent electric circuit elements is carried out for the said information in order to embed the designed elements into entire design system to execute the system simulation. The invention shortens system design cycle greatly and raises accuracy of designs.

First, the method builds the new return loss model with the structure loss being added so as to obtain the amplitude information and the phase information of the return loss so that the result with more truthfulness is gotten. Then, the design of equivalent electric circuit elements is carried out for the said information in order to embed the designed elements into entire design system to execute the system simulation. The invention shortens system design cycle greatly and raises accuracy of designs.

The invention provides an integrated operating box. The integrated operating box comprises an elevator wall hollow-out cavity, an operating box body and a cover plate, wherein the operating box body and the cover plate are arranged inside the elevator wall hollow-out cavity. The cover plate is connected with the elevator wall hollow-out cavity through connecting rotary shafts. Four fixed components are arranged inside the elevator wall hollow-out cavity. The end faces of the two sides of the operating box body are provided with two blocks. The elevator wall hollow-out cavity is fixed to the operating box body through the fixed components and the blocks. The fixed components are provided with fixed notches. The tops of the upper portions of the fixed notches are provided with fixed rotary shafts. The fixed rotary shafts are rotatably connected with fixed rotary plates. The bottoms of the fixed components are provided with blocking sheets.

The invention discloses a shell heat exchanger of a double-cylinder casting, comprising a double-cylinder shell, a base, casting end sockets, an end socket sealing ring, a heat exchange core, a rear sealing cover plate, a threaded plug, a fastening bolt, a cover plate sealing ring, an air inlet, an air outlet and a standby air inlet; the double-barrel shell comprises a first tube and a second tube, the openings of the first tube and the second tube are positioned at one side of the double-barrel shell, and the casting end sockets are arranged on the openings of the first tube and the second tube; the other side of the double-barrel shell is provided with the rear sealing cover plate; the top side of the double-barrel shell is provided with the air inlet, the air outlet and the standby airinlet. The shell heat exchanger provided by the invention has the characteristics of improving the passing rate of one-time test, improving the overall yield rate, shortening the production cycle of the heat exchanger, shortening the design cycle, reducing the outage maintenance loss and having strong capability.

The invention discloses a multipoint laser. The multipoint laser comprises N single-point lasers, a man-machine interaction device, a controller and a laser driving circuit, wherein the N single-point lasers serve as N light emitting points of the multipoint laser, and emission of N laser beams is realized; and the controller controls the on-off states of the N single-point lasers under the indication of the man-machine interaction device, so that the control over switching-on or switching-off of the N laser beams is realized. The laser beams emitted by the N single-point lasers are sent without the help of an optical system formed by a reflector, a prism and the like, and existing N single-point lasers can be adopted to serve as the required N single-point lasers. Thus, the multipoint laser overcomes defects of an existing five-point laser which are caused by that the required five light emitting points are generated by an optical system and the sending of the laser beams is performed by the optical system, and the identification of the optical system is not needed in the instrument, so that the generation and control workload of the plurality of laser beams is lowered, the design period is shortened, and the researching and production costs are reduced.

The invention belongs to the technical field of online circuit design review, and discloses a circuit design online review method and system, a medium, equipment, a terminal and an application. The method comprises the steps of starting a login system, creating a review project to fill in project information, and starting a review process; selecting a design object, filling in opinion information,and submitting or storing review opinions; establishing long-acting connection between a client and a server, and pushing communication content; outputting a report, quickly outputting a report filein a specified format and storing the report file locally; archiving the file; carrying out enterprise knowledge base management; and carrying out data statistical analysis. According to the method, design review opinions are rapidly collected and gathered on line and fed back to designers, the design review opinions and design tools are developed and integrated, the review opinions and design data are bound, the designers can position questions through one key, restore question views and modify and reply the review opinions in time, the efficiency of the design review process is greatly improved, resource waste caused by repeated conference holding is avoided, and the design period is accelerated.

The invention, which relates to the field of microwave wireless communication, discloses a device for reducing the passive intermodulation of a circular waveguide duplexer and a method thereof. According to the invention, metal-air-metal contact is realized by using a dielectric flange and metal-non-conductive-dielectric-metal contact is realized by using a dielectric sheet, so that passive intermodulation of microwave parts is suppressed. The device comprises a non-conductive dielectric flange, metal screws required by fixing the non-conductive dielectric flange, a non-conductive dielectric sheet, a non-conductive dielectric sleeve, and non-conductive dielectric screws. The device has advantages of simple structure, light weight, high design cost rate and short design period. The device and the method thereof can be applied to the fields of aerospace and ground communication widely.