38results about How to "Free from external interference" patented technology

The invention discloses a performance test platform and method for a multi-rotor unmanned aerial vehicle. The test platform comprises a base, a stand column, a top frame, a performance test instrument and a calculation processing center; the bottom of the stand column is connected to the base through a ball-head universal bearing, and the top of the stand column is connected to the top frame through a ball-head universal bearing; the top frame is hung on an external rigid body through an elastic inhaul cable; a rack of the multi-rotor unmanned aerial vehicle is provided with a sleeving ring arranged on the stand column in a sleeving mode; the performance test instrument comprises an on-vehicle test instrument body which is arranged on the multi-rotor unmanned aerial vehicle and used for testing flight attitude information and work condition information of the multi-rotor unmanned aerial vehicle and a ground test instrument body which is arranged on the test platform and used for testing external response information of the multi-rotor unmanned aerial vehicle; the calculation processing center comprises a data collecting unit and a data analyzing unit. The test platform is simple in structure, good in flexibility and capable of accurately testing multiple performance indexes of the aerial vehicle.

The invention discloses a micro-blanking automation device and method of a sheet metal under indirect impact of laser. The micro-blanking automation device comprises a laser generating system, an automatic forming system and a control system, wherein the laser generating system is composed of a laser controller, a laser emitter and an optical fiber, the automatic forming device is composed of an end cap, a focusing lens cone, a machine body, a micro-blanking worktable, a three-coordinator moving chuck, a base, a varying magnetic field device, a rotary table multi-position device, a restraint layer-fly piece integrated piece, a restraint layer-fly piece integrated piece storage bin and a recovery device. According to the micro-blanking automation device and method of the sheet metal under the indirect impact of the laser, pulse laser is used as a forming power source, energy conversion between optical energy and mechanical energy is conducted through a restraint layer-fly piece integrated piece device, and therefore automation of the micro-blanking technology that the sheet metal is loaded through a fly piece driven by the pulse laser is achieved. The automatic forming system is relatively independent, the machining precision is free from external interference, and personal errors are avoided. Both laser circuits and the micro-blanking worktable are stored inside the machine body so that safety of experimental operation is improved.

The invention discloses a micro-bending-coining automation device and method of a sheet metal under indirect impact of laser. The micro-bending-coining automation device comprises a laser generating system, an automatic forming system and a control system, wherein the laser generating system is composed of a laser controller, a laser emitter and an optical fiber, and the automatic forming system is composed of an end cap, a focusing lens cone, a machine body, a micro-bending-coining worktable, a three-coordinate moving chuck, a varying magnetic field device, a rotary table multi-position device, a restrain layer-fly piece integrated piece, a restraint layer-fly piece integrated piece storage bin and a recovery device. According to the micro-bending-coining automation device and method of the sheet metal under the indirect impact of the laser, pulse laser is used as a forming power source, energy conversion between optical energy and mechanical energy is conducted through a restraint layer-fly piece integrated piece device, and therefore automation of the micro-bending-coining technology of a fly piece loading sheet metal driven by the pulse laser is achieved. The automatic forming system is relatively independent, the machining precision is free from external interference, and personal errors are avoided. Both laser circuits and the micro-bending coining worktable are stored inside the machine body so that safety of experimental operation is improved.

The invention relates to a hydraulic type bulk feed transportation vehicle. A power takeoff device is driven by the output power of an automobile gearbox; a high-pressure oil pump is transmitted to drive a hydraulic system; the high-pressure oil pump is connected with a distributing valve through a pipeline; three output ends of the valve are connected with a corner hydraulic motor, a lifting oil cylinder and a horizontal discharging hydraulic motor, vertical discharging hydraulic motor and movable discharging hydraulic motor in serial connection respectively; a discharging device consists of a horizontal discharging system, a vertical discharging system and a movable discharging system which are spiral conveyors driven by the hydraulic motor; the horizontal discharging system is arranged inside a tank body; the vertical discharging system is positioned outside the tank body; a feed port and a discharge port of the vertical discharging system are communicated with a discharge port of the horizontal discharging system and a feed port of the movable discharging system respectively; the lifting oil cylinder and a cylinder body of the movable discharging system are connected to realize up-and-down lifting; and the discharging device is also provided with a corner system for producing horizontal deflexion of the movable discharging cylinder body. The hydraulic type bulk feed transportation vehicle has the advantages of reducing packaging cost, saving feed, avoiding causing pollution in the loading and unloading and transportation links.

The invention relates to the field of slag dredging machines, and discloses a slag dredging machine. The slag dredging machine comprises a slag dredging pool (1), a main water supply pipeline (2) provided with a chain flushing water pipeline (3), a manual door continuous water supply pipeline (4), an electric door water supply pipeline (5) and an electric door emergency water supply pipeline (6),a water collecting pool (7), and a slag dredging machine emergency water supply pipeline (8); and along with lowering of the liquid level of the slag dredging pool (1), the electric door water supplypipeline (5), the electric door emergency water supply pipeline (6) and the slag dredging machine emergency water supply pipeline (8) are opened in sequence. In the slag dredging machine, a concentrator, a concentrator sewage pump, a dedusting water pump and a slag water medicine charging system are canceled; the slag dredging pool is basically not disturbed by the external, so that the precipitation effect is better; and the water collecting pool only receives less water without easily generating blockage, so that the slag dredging machine is reliably operated, and the slag dredging efficiency is improved.

The invention relates to bare core interface management, in particular to an interconnection bare core interface management system and an initialization method thereof. The interconnection bare core interface management system comprises a CMU system, a JTAG-Die interface and a configuration network, wherein the JTAG-Die interface and the configuration network are connected with the CMU system; the CMU system comprises a CMU processor and a Flash connected with the CMU processor, and the Flash is used for storing software codes of the CMU system; the JTAG-Die interface is used for controlling the CMU program to start; one end of the configuration network is connected with the CMU processor in an external form, and the other end of the configuration network is connected to each to-be-configured interface through an independent bus; and the CMU processor is used for transmitting configuration data to the function register of each to-be-configured interface through the configuration network and the independent bus when executing a configuration program of the CMU processor so as to realize configuration of an interface address translation table. According to the system, the processor is used for realizing system initialization configuration, hardware configuration of an interface is converted into software programming, the design difficulty is reduced, the development process is simplified, the configuration flexibility is enhanced, and the system building speed is increased.

The invention relates to an intelligent open-pit coal mine coal mining machine system, in particular to an inertial navigation system/odometer integrated navigation mode applied to the intelligent open-pit coal mine coal mining machine system. The inertial navigation system of the intelligent open-pit coal mine coal mining machine system is installed at the top of a continuous miner, the odometeris installed on a walking part of the continuous miner, and a continuous miner movement direction control mechanism is installed on the continuous miner. The inertial navigation system, the odometer and the continuous miner movement direction control mechanism are all connected to an upper computer through optical cables. The inertial navigation/odometer integrated system of the intelligent open-pit coal mine coal mining machine system is installed on a coal mining machine, the high-precision navigation positioning and orientation method does not need any external information and is free fromexternal interference. In order to cope with the complex electromagnetic environment in a mine channel and the corrosive effect of pulverized coal on a signal transmission line, the optical fiber transmission technology is used in the system to transmit the information collected by the navigation system to the upper computer, and the upper computer processes the collected information and uses a PID control algorithm to control the coal mining machine to enable the coal mining machine to work in the given direction.

The invention discloses a shift register unit, a driving method thereof, a display panel and a display device. The shift register unit comprises an output module, a first driver, a second driver, a first feedback regulation module and a second feedback regulation module, wherein the output module supplies a signal of a first signal end or a second signal end to an output end according to voltages exerted on a first node and a second node; the first driver controls the voltage of the first node according to a signal of a first input end; the second driver controls the voltage of the second node according to signals of the first input end and a third input end; the first feedback regulation module controls the voltage of the first node according to signals of the output end and a second input end; the second feedback regulation module controls the voltage of the second node according to the signal of the output end. The first feedback regulation module performs feedback control on the first node through the output end, and the second feedback regulation module can perform feedback control on the second node through the output end, so that in real-time positions of the first node and the second node, the circuit output is protected from external interference and the circuit reliability is improved.

The invention relates to a method for preparing a piperazine pyridine compound through a continuous reaction. The method comprises the steps of continuous condensation and hydrogenation. The continuous condensation reaction comprises the following steps: mixing a piperazine alkali solution and a pyridine solution which are used as raw materials, and reacting in a pipeline reactor. The reaction temperature of the pipeline reactor can be set in a temperature range of 10-80 DEG C, preferably 20-60 DEG C. The reaction time can also be set, for example, the reaction time ranges from 30 S to 300 S, and preferably, the reaction time is about 80 S. Then, a continuous hydrogenation reaction step is carried out, the temperature of the continuous hydrogenation reaction is controlled to be 10-100 DEG C, preferably about 40-80 DEG C, and the reaction time is controlled to be 20-200 S, preferably about 100 S. The continuous hydrogenation reduction reaction can be carried out in a catalyst fixed bed, and can also be carried out in a continuous microreactor.

The present invention relates to a rotating electrical machine, particularly for a motor vehicle. The machine comprises active parts: a casing (11), a brush holder (24) comprising at least one brush (23), an electrical excitation trace (44) of said brush and a housing (37) formed by an electrically insulating material, a fixing device (49) for mounting the brush holder (24) in said machine and anelectronic assembly (36) comprising a control module (61) and an excitation trace (48) connecting the excitation trace (44) of the brush holder to said control module. The electronic assembly (36) comprises a ground trace (63), said ground trace being electrically connected to the control module (61) and to the casing (11) by means of the fixing device (49).

The present invention proposes a rotating electrical machine, in particular for a motor vehicle. The machine comprises live parts; a casing (11); a brush holder (24) comprising at least one brush (23), an electric excitation path (44) for exciting the brush and a housing (37) made of an electrically insulating material; and an electronic assembly (36) comprising a control module (61) and an excitation path (48) connecting the excitation path (44) of the brush holder to the control module. The control module (61) comprises a ground path (63), the ground path (63) being electrically connected tothe casing (11) via the brush holder (24).