32results about How to "The method is simple to implement" patented technology

The invention discloses a method for zero emission treatment of desulfured waste water. The method comprises the following steps: 1) discharging the desulfured waste water obtained after desulfuration in a desulfuration tower into a preliminary sedimentation tank, carrying out primary separation in the preliminary sedimentation tank, and transporting an upper clear liquid separated out to a buffer pool through a slurry pump; 2) successively passing the desulfured waste water in the buffer pool through an atomization plant and a static dust catcher; 3) transporting the waste water which is from the lower part of the preliminary sedimentation tank and has large solid content to a filter press through an another sludge pump; and 4) feeding the waste water filtered back to the preliminary sedimentation tank through the slurry pump. Simultaneously, the invention also discloses a system for zero emission treatment of desulfured waste water. The zero emission treatment is conveniently carried out on the desulfured waste water through the method, the process is simple and labor is saved; and the system has a compact structure, the method is simple to implement, energy is saved, the quality of smoke at the inlet of the dust catcher is improved, the zero emission of the desulfured waste water can be really achieved, thus the system has the advantage of popularization value.

A method for constructing digital coordinates of a high-aspect-ratio aircraft. Six reference points are selected, and a line connecting the midpoint between the reference point on the front side of the fuselage and the reference point on the rear side of the fuselage is rotated at a certain angle. Finally, it is used as the Y axis, and the plane formed by the wing reference point on the Y axis and the front side reference point of the fuselage is projected and then moved as the X axis, and the Cartesian coordinate system is established as the coordinate system of the body to solve the problem. When the existing fitting method is used to establish the body coordinate system, the fitting error is too large due to the problem of wing droop, so that the body coordinate system cannot be accurately established.

The invention discloses an aeroacoustic composite field uniform distribution device and a uniform distribution method thereof. The uniform distribution device includes a device inlet, an aeroacoustic field distribution space, a sounding device, and a device outlet, wherein an air intake plate is arranged at the device inlet, and the device There is an aeroacoustic deflector at the exit; the aeroacoustic average layout space is the space enclosed by the air intake plate, the aeroacoustic deflector and the space wall between them; the sounding device is set in the aeroacoustic average layout space . The invention realizes the uniform distribution of an aeroacoustic composite material energy flow field, and can promote the improvement of the uniform distribution degree of the composite flow field through the interaction between different material energy fields. The device of the invention has a compact structure, and the method is simple to implement, and can realize the uniform arrangement of the aeroacoustic composite field in the true sense, which is of great significance for energy saving and environmental protection, and has popularization value.

The invention belongs to the technical field of multi-sensor information fusion in the aspect of information processing. The selected method is based on a class of linear dynamic systems in a correlated noise environment, with radar target tracking as the background, to obtain high-precision target information as the goal, and study its event-triggered Kalman filter state estimation and multi-sensor sequential data fusion problems . It is characterized in that the event-triggered sampling strategy is used technically, which can reduce network bandwidth occupation and save data transmission energy consumption; for noise-related environments, it can reduce energy consumption and make optimal estimation by timely and fully utilizing observation data. The obtained estimates are optimal in the sense of linear minimum variance. The feasibility and effectiveness of the invented method are tested by computer simulation experiment. The method proposed by the invention has potential value in many application fields, such as radar target tracking, integrated navigation, fault detection, process monitoring and so on.

The invention discloses a large-space descaling device and a descaling method with an evenly distributed aeroacoustic composite field. The descaling device includes a device inlet, an aeroacoustic field-distributed space, an acoustic soot blowing device, a descaling space, and a device outlet. Among them, there is an aero-acoustic field arrangement space behind the device entrance, a sonic soot blowing device is installed in the aero-acoustic field arrangement space, a descaling space is set after the aero-acoustic field arrangement space, and a device outlet is set after the aero-acoustic field arrangement space; An aeroacoustic deflector is arranged behind the sonic soot blowing device in the space, and the sounding direction of the sonic soot blowing device faces the aeroacoustic deflector. The descaling method is that after the airflow enters the device, the airflow is firstly averaged to form the airflow after the average flow, and then it is fluidized together with the sound waves emitted by the sonic soot blowing device in the aeroacoustic average field layout space, and then the airflow is averaged by the aeroacoustic deflector. After flow and rectification, it enters the descaling space to descale the equipment set in the descaling space, and at the same time, it can effectively prevent local serious scaling.

The invention discloses a tunable sound wave generation device which comprises a high-pressure air guide pipe, a jet cavity, a resonance cavity and an air source, wherein a jet cavity sealing end cover is arranged at one end of the jet cavity, and a jet nozzle core is arranged at the other end of the jet cavity; a gap is reserved between the jet nozzle core and the inner wall of the jet cavity to form a jet nozzle; the high-pressure air guide pipe penetrates through the jet cavity sealing end cover, enters the jet cavity and is connected with the jet nozzle core; a through hole is formed in the high-pressure air guide pipe in the jet cavity; one end of the resonance cavity is opened, and the other end of the resonance cavity is provided with a resonance cavity sealing end cover; the opened end of the resonance cavity faces the jet nozzle core; and a sliding plate is arranged in the resonance cavity, and can be controlled to move through an air pressure cavity or a reciprocating rod. The device provided by the invention can adjust and control the sound production frequency according to a requirement.

The invention provides a satellite electronic load testing method. The satellite electronic load testing method is characterized in that the remote metering of a satellite is a signal for synchronizing an electronic load ground testing device to the satellite by time according to the rule of downloading at intervals based on the fixed time, and the information of the time in the satellite is extracted, so as to provide the time standard for the ground testing device; the ground testing device with the LXI (LAN extension for instrumentation) function is adopted, and the software and the network are utilized for controlling and inquiring, so as to synchronize the state variations of the ground testing device and the device in the satellite; the state stetting of the ground testing device is inquired and recorded on real time, and therefore, an accurate testing input condition is provided for interpreting the electronic load data. According to the satellite electronic load testing method, the risk caused by manual operation and mis-operation is further reduced after the introduction of a list of test examples. The satellite electronic load testing method is applicable to the condition that the satellite electronic load working modes are frequently switched and the ground testing device is to be correspondingly adjusted, which leads to slow update speed of related remote metering information. With the adoption of the satellite electronic load testing method, the manual operation link is simplified, the testing efficiency is raised, and the project realization is convenient.

The invention discloses an SCR denitration flow field simulation system, which comprises an SCR denitration reactor model, a flow measuring device, a deduster, a draught fan and a methane gas jetting device. The SCR denitration reactor model is made by reducing a real SCR denitration reactor according to a ratio of 1:10 to 1:15, and comprises a coal economizer outlet section, the SCR denitration reactor and an air preheater inlet section, wherein the air preheater inlet section is connected to a horizontally arranged measuring pipe. The flow measuring device is arranged on the measuring pipe.The outlet of the measuring pipe is connected to the inlet of the deduster through a structure in which a vertical pipe is connected with a horizontal pipe, and the outlet of the deduster is connected with the draught fan. A three-way switch is arranged on the measuring pipe, and the methane jetting device is connected to an ammonia spraying and mixing section through a jetting pipe. When the system disclosed by the invention is used, a flow field, a pressure field and a concentration field in the SCR denitration reactor can be conveniently measured, the motion of fly ash in the reactor can be really simulated, and a basis is provided for the structural design and optimization of a real reactor.

A robust inverse model learning gain design method based on FIR filtering belongs to the field of ultra-precision motion control. The goal of robust inverse model iterative learning control is to continuously improve the servo accuracy of the motion system through servo error learning, and its learning gain is determined by the inverse low-pass filter H(z) of the nominal model of the closed-loop system and the time advance link z τ Three parts are connected in series; the method adopts an FIR low-pass filter with a linear phase shift characteristic to replace the traditional low-pass filter in the prior art, and realizes zero-phase filtering by compensating the linear phase shift of the FIR low-pass filter. In the disclosed method of the present invention, the FIR low-pass filter can directly realize the specified stop-band initial frequency and stop-band attenuation through design, and the amount of time lead compensation can be directly obtained by calculation, and zero-phase filtering can be realized in a larger frequency range, overcoming It eliminates the blindness of parameter setting, and can effectively ensure that the expected compensation effect is achieved in practical applications.

The invention discloses a sensor network data fusion integrity protection method, which belongs to the technical field of information security and Internet of Things application. Aiming at the security issues of sensor network node data collection and data fusion, the present invention firstly initializes security parameters of network nodes by the general convergence node in the data fusion process, and then performs privacy protection by adding private seeds to the data that needs to be fused by sensor nodes, and Data integrity protection is carried out by using the data association characteristics of complex virtual and real parts, and corresponding measures can be taken to check the data that has been tampered with by attacks, so as to improve the security of sensor network data fusion and related applications, and provide security for the application of the Internet of Things.