74results about How to "Simplify Design Work" patented technology

The invention discloses a motor capable of realizing a stator closed and rotor open ventilation mode by adopting axial-flow ventilation. An adopted shaft is provided with an external circumferential spiral groove, and the spiral groove matches with axial-flow fans with two clingy ends and the same spiral directions to form an axial-flow combined ventilation apparatus; the apparatus is arranged in a rotor and at two ends of the rotor, and the extra axial space of the motor is not occupied, so that the motor is compact in structure; due to different steering directions, airflow directions are also different but the motor can be cooled; in combination with labyrinth seal, a combined cooling mode of stator closed ventilation cooling and rotor open ventilation cooling of the motor is realized, and the combined cooling mode enables the insulation reliability of a stator and the heat dissipation capability of a rotor to be both ensured and improves the motor efficiency; a stator cooling air duct consists of vent holes (2x), a stator air duct (2h) and an air duct section (6h); a rotor cooling air duct consists of vent holes (5y), gaps (9b), a spiral groove (4b) and gaps (10b); the two cooling air ducts are connected in series; and the spiral combined apparatus provides air pressures for the cooling air ducts.

The invention discloses a line insulation testing system, comprising a signal leading-in connecting unit, an analog switch controlling unit, a test voltage generating unit, a testing circuit unit, a data processing unit, a data storage and display unit and a serial data communications unit; the characteristics are as follows: the analog switch controlling unit utilizes the connecting/disconnecting of the switch to realize the electrical connection between the tested signal and the testing circuit, one end of the test voltage generating unit is electrically connected with the tested signal leading-in connecting unit, the other end is electrically connected with a standard resistor, the standard resistor is connected with the tested signal leading-in connecting unit in serial, voltage at both ends of the standard resistor is collected, then, data is processed through a central control unit, and the test result is obtained. Meanwhile, the connecting/disconnecting of the analog control switch, the control of charging and outputting of direct voltage source, the data storage display and the data communication are all centralizedly controlled by the central control unit. Compared with the prior art, the insulation testing system provided by the invention avoids constantly changing the connection relationship between the instrument measurement terminal and two pins of the tested signal during every testing, and realizes the automatically switching of the signal. The invention adopts DSP as a controller of the system, the self-bringing rich logic control units are convenient to write a timing control circuit and a data processing program, the corresponding control targets are easy to realize, and the design work is greatly simplified.

The invention discloses a fractional periodic repetitive controller suitable for a position servo. The fractional periodic repetitive controller constructs a chattering-free attractive rule based on sine switching, further introduces a suppression idea of repetitive control on tracking and periodic disturbance of periodic signals, designs a fractional periodic repetitive control method based on the sine switching attractive rule according to fractional periodic symmetrical characteristics of disturbance signals in a time domain, and seeks a control sequence so that the output can track the periodic reference input accurately after limited control steps. The fractional periodic repetitive controller effectively suppresses the periodic disturbance at the same frequency of the reference position signals in the position servo system, and has good dynamic quality.

The invention relates to a livestock and poultry house environment monitoring system based on the Internet of Things technology and a working method thereof. The system comprises a monitoring and executing module, a data transmission module, an upper computer monitoring platform 1 and a mobile terminal. The monitoring and executing module is arranged in a livestock and poultry house and comprises a monitoring module 6 and an executing module. The data transmission module is a ZigBee wireless sensing module. The upper computer monitoring platform 1 comprises a real-time display module, a data storage module, a control module and an alarm module. The working method of the system includes the steps of information acquisition, data fusion, fuzzy control and instruction output. An optimal weighted data fusion algorithm is adopted for the data fusion step. The system and the working method thereof have the advantages that the system is supported by the Internet of Things technology and the fuzzy control technology, a ZigBee wireless sensing network, a TCP/IP network and a mobile communication network are fully utilized, and the intelligent livestock and poultry house environment monitoring system is provided. The system achieves access of the mobile phone terminal to ZigBee network monitoring data through an SIM900A module and the upper computer monitoring platform 1.

The invention provides a neural network self-adaptive control method applied to a servo system, aiming to improve the control accuracy of the servo system. The neural network self-adaptive control method realizes nonlinear compensation and interference suppression to the servo system and improves the tracking accuracy of the servo system. The servo system mainly comprises a reference model, a self-adaptive controller and a neural network controller. In addition, based on a speed ring accurate reference model, a position ring controller is very simple in design so that the whole system is rather convenient in design, thereby being easy to carry out in engineering.

The present invention relates to a wire-frame-based curved surface body three-dimensional boundary representation (hereinafter referred to as B-rep) model reconstructing method and a device thereof. A wire frame model of a project mechanical part in a three-dimension modeling system can be transferred into a three-dimensional boundary representation (B-rep) model. The wire frame model which is obtained by reconstructing various kinds of views or CAD software drawings and the wire frame model which is reconstructed by a sketch-based intelligent CAD system can also be transferred into the B-rep model by the method. The method is particularly effective for the wire frame model with high precision and complete geometrical and topological information. The method can be widely applied to the three-dimension reconstructing in a project drawing and the CAD software drawing and can also be applied to the fields of industrial automatic production planning and decision, three-dimensional identification and detection, product data management and data base searches,computer auxiliary design and manufacture, etc.

The invention discloses a totally enclosed motor for achieving separate cooling of a stator and a rotor by a dual-channel fan. The dual-channel fan 9 with a unique design is adopted and matched with a motor structure, so that a combined cooling mode of enclosed ventilation cooling of the stator and open ventilation cooling of the rotor of a three-phase asynchronous motor is achieved. By the combined cooling mode, the stator insulating reliability and the rotor cooling capacity are ensured; and the motor efficiency is improved. The dual-channel fan 9 can play roles of two fans, so that the motor structure is compact. Fan blades of the dual-channel fan are divided into two groups 9c and 9f, and are in staggered distribution in the circumference. Air ducts 5a, 10a, 3a, 9a, 9c, 9b and 6a form independent rotor cooling air ducts; the air ducts 6b, 9d, 9f, 9e and 2a form independent stator cooling air ducts; a convex edge 5b and a toothed plate 11 form a labyrinth seal; a fan excircle 9g and the convex edges 6d and 6e are in small-gap fit; and a stator space is isolated from a rotor space.

The invention belongs to the field of machine design and is especially about an automatic optimization design for the end view equipment. The design bases on the further development to the CAD system, and use the algorithm to automatic optimization, The spatial structure of the end view equipment is be regarded as the spatial structure with five freedoms in it. A non-linear multivariant equation set can be gained by the alternation of the coordinate or the Robot kinematics. The location information of the module and the type of the sucking disc can be obtained by solve it. The iteration method is used in the design and the standard sucking disc can be chosen by changing the location of the vice-pole. The location of the sucking disc is altered on the curved surface of pressing part according to the iteration method, thus we can gain an accurate result suit for the length of the standard pole. The structure of the end-viewing equipment is optimized by this invention, and the difficulty and time for design are decreased, the design quality is improved, the component chosen can be assembled to be an end viewing equipment for practical application, needing not to be processed and cut out furthermore. Because the error of each sucking-disc point is guaranteed to be in the range requested while they are designed, the installation quality has been improved, and the ordinary work of the end-viewing has been guaranteed. And the time on preparing for the production has been shortened and the production efficiency has been improved, and the cost for production has been decreased.

A power supply layout for an integrated circuit has a plurality of power pads, a plurality of ground pads, a plurality of first-type conductive wires directly connected to the power pad, a plurality of second-type conductive wires directly connected to the ground pad, and a core circuit electrically connected to the first-type and the second-type conductive wires for acquiring the operational power. The integrated circuit is made of a plurality of metal layers, wherein the first-type conductive wire and the second-type conductive wire are positioned at different metal layers. The power pad is positioned at the same metal layer as the first-type conductive wire, while the ground pad is positioned at the same metal layer as the second-type conductive wire.

The present invention discloses a method and a device for forwarding messages, which belong to the communication field. The invention is designed for solving the problem that the design of a message forwarding chip is complicated due to an internal processing module of the message forwarding chip is not capable of determining whether to process the received data message or not. The technical proposal of the present invention adopts the message forwarding method which comprises the following steps of receiving a data message, and obtaining a processing identifier of the data message; comparing the processing identifier with a predetermined identifier of the processing module to obtain a comparing result; processing the received data message according to the comparing result. The message forwarding method and the device provided by the embodiment of the present invention are not only capable of being applied to NP+ASIC forwarding chips, but capable of being applied to FPGA chips or multi-core processors.

The invention relates to a dual output DC/DC power supply achieving circuit with a zero cross adjustment rate. The dual output DC/DC power supply achieving circuit comprises a direct voltage input end, an input filtering circuit, a first power conversion circuit, a first direct voltage output end, a control circuit, a second power conversion circuit and a second direct voltage output end connected with the second power conversion circuit. The direct voltage input end, the input filtering circuit, the first power conversion circuit and the first direct voltage output end are connected in sequence. The direct voltage input end is connected to the first power conversion circuit and the second power conversion circuit through the input filtering circuit. The control circuit is used for controlling the power conversion of the first power conversion circuit and the power conversion of the second power conversion circuit. The dual output DC/DC power supply achieving circuit can eliminate the influence of the cross adjustment rate fundamentally, can improve the cross adjustment performance under the condition that a dual output power supply is in an asymmetric load or dynamic change power utilization environment, and has high popularization and application value.

The invention relates to a heavy-duty car CAN control system flexibility configuration method based on a bussing technique. Step 1, an upper machine flexibility configuration module 1 produces configure relation of a car body system; step 2, the upper machine flexibility configure module 1 transmits the configure relation to a central controller module 2 for storage; step 3, the central controller module 2 detects the input port state, and the meaning of the input port is obtained by the configure relation stored in a non-volatile storage; step 4, level signals are applied to a power supply control module 3 which is pulled on switching value input detection to point to high valid input and low valid input, and the current state of the input switching value is detected; step 5, an output port controlled by the input port and the output mode of the output port are detected; and step 6, a power output module finishes power output. The input and output functions of a hardware port are changed by the method by changing the car body configure information, the function of the system flexibility configure is completed, and the configure method is applied to heavy trucks of various car models below the same hardware platform.

The invention discloses a climbing belt side hang type jacking device which comprises a jacking guiding wheel module, an eccentric climbing belt module, a climbing frame main structure, a propping lead screw module and an inner climbing lifting system, wherein the climbing frame main body adopts a detachable structure, and is fixed on a cross beam internally attached to the elevator shaft of a building, and an inner climbing tower crane body is mounted inside the climbing frame main structure; the eccentric climbing module adopts an eccentric climbing belt structure, is suspended on an upper layer climbing frame main structure and is positioned on the inner side of the climbing frame main structure; the jacking guiding wheel module and the propping lead screw module are mounted on the climbing frame main structure in a combined manner; an inner climbing lifting system is welded and fixed onto the inner climbing tower crane body, the inner climbing lifting system always steps on the climbing belt during the jacking process, and through jacking, the raised displacement of the inner climbing tower crane body in the building can be achieved through jacking. The climbing belt side hang type jacking device provided by the invention is formed by combining module components, the variations are more, the suitability is strong, the adaptability of the inner climbing tower crane is improved, costs in aspects of manufacturing, maintenance, management and the like are also reduced, and the benefits are improved.

An integral sliding mode repetitive controller suitable for a periodic servo system is disclosed. Sliding mode control has a reaching moving mode and a sliding mode moving mode. In the reaching moving mode, and a system state convergence locus is drawn via a reaching law; in order to enable a system output position to converge into neighborhood of reference signals, a discrete reaching law (1) is constructed, a position servo data sampling system state space (6) is designed, and a chattering-free reaching law is constructed for the integral sliding mode repetitive controller. The invention provides the integral sliding mode repetitive controller for the periodic servo system, wherein the integral sliding mode repetitive controller is small in steady-state tracking errors and high in position tracking precision. Based on repetitive operation characteristics of a periodic working motor servo system, existing information of periodic disturbance components can be used for accurate position tracking.

The invention discloses a flying wing unmanned aerial vehicle large overload steady disk maneuvering control method. The method comprises a steady disk maneuvering control logic, an engine surface speed closed-loop control mode, a height keeping control mode and a roll angle control mode. The method is applied to a flying wing layout unmanned aerial vehicle and provides an automatic control methodfor each control channel in a stable circling maneuvering process. According to the method, a gradient of the unmanned aerial vehicle can be established by calling the roll angle control mode, fixed-height flight is realized by calling the height keeping control mode, and fixed-speed flight is realized by calling the engine surface speed closed-loop control mode so that the stable circling maneuvering action of the unmanned aerial vehicle is completed. By reasonably and automatically controlling the engine and a control surface, stable circling maneuvering flight of the flying wing layout unmanned aerial vehicle can be achieved, and a flight direction of the unmanned aerial vehicle can be rapidly changed.

A kind of IGBT drive circuit based on HCPL-316J chip, comprises controller module, HCPL-316J chip, overcurrent protection module and overvoltage protection module, wherein the V of controller module and HCPL-316J chip _IN+ , and The input terminal of the overcurrent protection module is connected to the fourteenth pin DESAT of the HCPL-316J chip and the output terminal C port is connected to the collector C of the IGBT. The overcurrent protection module includes at least one reverse diode connected in series , the overvoltage protection module includes a push-pull circuit composed of two switching transistors, the first voltage regulator tube ZD1, the second voltage regulator tube ZD2, the third voltage regulator tube ZD3 and two resistors R6 and R7, the first voltage regulator tube ZD1 The positive pole of the second voltage regulator tube ZD2 is connected to the positive pole of the third voltage regulator tube (ZD3), one end of the resistors R6 and R7 is respectively connected to the emission sets of the two switching transistors, and the other end G port is connected to the gate G of the IGBT. The negative terminal E port of the first regulator tube ZD1 is connected to the emitter terminal E of the IGBT. The utility model has the advantages of simple peripheral circuit, high working stability and reliability.

The invention relates to a deepwater grouting anchor and a construction method. The deepwater grouting anchor comprises an anchor body, an anchor cable, a grouting pipe and an elastic-plastic constraint sleeve body. The upper end of the anchor body is connected with the anchor cable, a slurry inlet is formed in the upper end of the anchor body, a slurry outlet is formed in the anchor body, and the slurry outlet is communicated with the slurry inlet through a slurry passing channel in the anchor body; the elastic-plastic constraint sleeve body comprises an elastic-plastic constraint film and an end fixing assembly, wraps the periphery of the anchor body, covers the grout outlet and seals the grout outlet. End fixing assemblies are arranged at the two ends of the elastic-plastic constraint film and fix the two ends of the elastic-plastic constraint film to the anchor body by extrusion, so that a gap between the elastic-plastic constraint film and the anchor body is sealed, and slurry is prevented from overflowing. During grouting, under the action of grout pressure, the elastic-plastic constraint sleeve body elastically expands firstly, grout is filled to enable the grout to surround the anchor body, and the grout at the elastic-plastic constraint sleeve body forms a grouting coagulated block along with gradual increase of the injected grout.

The invention provides a cam-driven three-degree-of-freedom parallel manipulator. The cam-driven three-degree-of-freedom parallel manipulator comprises a fixed platform, a movable platform, three plane cams, a swing rod, a connecting rod, a large arm, a small arm and the like. A movement is controlled and driven by combining the three cams, a movement is transferred by virtue of three spatial connecting rod mechanisms, and the degree of freedom of the movable platform is limited by mutual constraint of three groups of spatial parallelogram structures, so that the movable platform and the fixed platform are parallel all the way and mobile degrees of freedom in three directions are remained, so that the movable platform moves in different positions in the space. The manipulator provided by the invention has the characteristics of being compact in structure, high in loading capacity, high in production efficiency, high in degree of automation, small in repetitive error, low in cost and high in practicality.

The invention discloses a chip double-sided photoelectric characteristic comprehensive detection system and device. The comprises an air floating base, a sample adjustable clamp, a front electrical detection probe mechanism, a back electrical detection probe mechanism, a front observation mechanism, a back observation mechanism and the like, the air floating base, the sample adjustable clamp, the front detection probe mechanism and the back detection probe mechanism are modularized mechanisms, and the sample adjustable clamp, the front detection probe mechanism and the back detection probe mechanism can be assembled on the base in a combined mode; and chip electrical characteristic testing and detection can be carried out after assembling is completed; and an optical characteristic detection device can be additionally arranged for optical characteristic detection, and functions are comprehensive. The system can be flexibly installed and used, and can be selectively used and assembled by a client. A corresponding detection mechanism does not need to be additionally customized and designed according to different needs every time, so that the design work is simple, and the cost is saved. According to the system, each mechanism can be selected and combined for use, so that the detection tool is wide in application range and can be adapted to detection of various chips.

The invention relates to the technical field of basic design calculation optimization in offshore wind power energy engineering, and particularly discloses an integrated analysis method for offshore wind power single pile foundation design calculation optimization drawing. The method comprises the steps: according to basic information of a project, performing analysis on the basis of nonlinear finite elements, converting nonlinear characteristics between piles and soil in the single-pile foundation into linear springs through calculation, calculating and analyzing a static force, a dynamic force and fatigue working conditions of the single-pile foundation, performing optimization design on static force, dynamic force and fatigue working conditions of the single pile foundation by taking engineering cost as a target value, then extracting basic drawing information, and generating a drawing and engineering quantity. According to the method, linearization processing is carried out on complex offshore wind power nonlinear calculation analysis, the calculation accuracy is guaranteed, meanwhile, the reaction time of calculation is saved, and the nondeterminacy of nonlinear analysis is reduced.