53results about How to "Simplify the tuning process" patented technology

The invention discloses an automatic flight control simulation system for a general flight simulator. According to the technical scheme, the system comprises a flight guide module, an automatic pilotmodule, an auto-throttle module, an automatic landing module, an automatic navigation module, an automatic trim module and a module control logic/data configuration file module. The module control logic/data configuration file module comprises a control logic module and a data configuration module. The control logic module is used for judging whether each module meets an access condition or not before the access of the module, judging whether the above module is in contradiction with a currently operated module or not during the access of the module, and judging whether other modules need to be accessed or not before the exit of the currently operated module. The data configuration module is used for describing the control rates of the flight guide module, the automatic pilot module, the auto-throttle module, the automatic landing module, the automatic navigation module and the automatic trim module. In this way, the general design of the automatic flight control simulation system canbe realized.

The invention discloses a substation area backup protection method based on combination of direction comparison and current differential. In the method, zoning processing is performed on a backup protection range so that an application status that backup protection relies on fault electric quantity and time-limit ladder cooperation to realize selectivity is changed and the movement speed of the backup protection is improved; a current differential principle and a direction comparison principle are used comprehensively for fault positioning so that not only is absolute selectivity of the differential principle is used, but advantages that direction elements have lower demands on sampling value data synchronization are used, and at the same time, performance demands on inter-station data channels are reduced; after system faults are detected, time delay for Nms is performed to wait for a main protection motion, wherein N belongs to a range of [250, 350]; if the main protection refuses to move, a backup tripping command is sent out; and if a circuit breaker is out of order, an out-of-order tripping command is sent to an expansion tripping area. Compared with ladder time delay of at least 500ms for one differential adopted by traditional backup protection, the method is faster in motion rapid.

The invention discloses a permanent magnet synchronous motor low-speed domain rotor position identification method, so as to solve the problems that the traditional pulse signal injection method usesmultiple filters, the hysteresis effects are superimposed, the dynamic performance of the system is reduced, and the position estimation error is increased. A new low-speed position sensorless controlstrategy is proposed. In particular, on the basis of injection of a high-frequency pulse square wave voltage signal to a two-phase stationary coordinate system, through a generalized second-order integrator (SOGI), current in a beta axis is subjected to signal separation and amplitude demodulation, two paths of orthogonal signals including rotor position information are obtained, and through heterodyne and a rotor position observer, the rotor position information is extracted, and no filter is used during the whole signal demodulation process. The dynamic performance of the control system andthe accuracy of the rotor position estimation are effectively improved.

The invention discloses a substation area protection based integrated failure protection method for substations. On the basis of substation area protection devices, an automatic topological structure identification and minimum area difference stream detection method is used for achieving integrated failure protection of the whole substations, failure protection wiring and setting can be simplified, failed breakers can be identified quickly and accurately, failures can be isolated in minimum power outage ranges, failure protection actuation time is shortened, reliability of failure protection is improved, and the method is applicable to the substations with voltage classes between 110kV and 1000kV and has the good application prospect.

The invention relates to a respiratory system disease patient number prediction method based on lag analysis and LSTM. The influence of atmospheric pollutants and meteorological conditions on human respiratory system diseases is combined, a deep learning technology is adopted to predict the target disease patient number, and the prediction precision of the respiratory system disease patient numbercan be effectively improved. The hysteresis effect of atmospheric pollutants on respiratory system diseases is brought into analysis, a deep learning time step length setting method based on hysteresis analysis is provided, and the adjustment and optimization process of LSTM network parameters can be effectively simplified on the premise of ensuring the rationality of the model.

The invention discloses a coal-mine gas movement detection data processing method of mine Internet of Things, relating to the technical field of coal-mine gas movement detection data processing. The coal-mine gas movement detection data processing method comprises the following steps: installing a wireless access point composed of a sensor preprocessing unit and a sensor judging unit near each fixed gas detector; after simply processing and judging data detected by the fixed gas detectors and data detected by mobile gas detectors around the wireless access points by the wireless access points, uploading the data to a ground workstation through an underground switch, a coal mine Internet of Things transmission platform and a ground switch, grouping the gas detected by the mobile gas detectors and the data detected by the fixed gas detectors into two kinds of data of multi-dimensional gas data points and gas detection data pairs by the ground workstation, carrying out global judgment by respectively adopting a clustering-based adaptive weighting data fusion algorithm and a single-sensor and multi-measurement period credibility fusion algorithm, and issuing a global judgment result to each wireless access point in a broadcasting form. The reliability of the detected data is improved.

The invention relates to a parameter setting method for a robust controller of a direct current motor, and belongs to the technical field of automatic fractional order control. The parameter setting method is applied to the direct current motor in a position servo system. The transfer function is that , the transfer function of the FO[PI] controller to be subjected to setting is that , the Bode diagram of the controlled object P(s) is drawn up through a MATLAB, the module value m and the phase angle n at the frequency are obtained; through C(s)P(s)=G(s), the equation about integral order lambda is solved through the MATLAB, through the stability condition, the proportionality coefficient and the differential coefficient are solved, through the obtained lambda, the obtained Kp and Ki are substituted into the formula that . The parameter setting method has the advantages that the calculation amount of the parameter setting of the controller is reduced, and the parameter setting process of the factional order FO[PI] robust controller is simplified.

The invention discloses a VSC inner loop current control method based on uncertain interference estimation. The method comprises the following steps: S1, constructing a VSC current mathematical model of a DC power distribution network; s2, standardizing the current in the VSC current mathematical model to obtain a VSC inner loop current uncertainty dynamic model; s3, based on the VSC inner loop current uncertainty dynamic model, obtaining a VSC inner loop current reference model based on uncertainty interference estimation, an error equation based on uncertainty interference estimation and uncertainty and disturbance estimation values; and S4, according to the VSC inner loop current reference model, the error equation and the uncertainty and disturbance estimation values, calculating the control law of the VSC inner loop current. According to the method, the problem of poor anti-interference performance of the VSC inner loop current under traditional PI control can be solved, the robustness of a power grid system is improved, and the parameter setting process of the power grid system is greatly simplified.

The invention discloses a differential array beam wavefront corrector preparation method based on aberration measurement. The method comprises the following steps of measuring the distortion wavefront deviation of each sub-beam in an array beam comprising a plurality of sub-beams, and carrying out the three-dimensional modeling of an integrated wavefront corrector through three-dimensional modeling software, importing the model into simulation software for simulation optimization, judging whether the deformation amount and the resonant frequency of each sub-beam deformable mirror of the corrector meet design requirements or not, and if so, recording mirror body structure parameters, otherwise, conducting three-dimensional modeling again, and continuing simulation optimization until the design requirement is met, and preparing the differential wavefront corrector according to the structural parameters of the mirror body. The method has the advantages of low cost, compact system structure, customized design, high correction efficiency and the like.

The invention discloses a setting method for the control loop gain of a servo system. The setting method is characterized in that the servo system automatically sets gain parameters of servo control loops during reciprocating motion, specifically the gain parameters of a position loop control loop and a speed loop control loop. The method comprises the following steps: before starting of the setting, firstly determining a simplified load model parameter, namely, determining a rotational inertia J of a load; secondly, performing tail-end low-frequency jitter detection and suppression; thirdly, setting the gain parameters of the speed loop control loop; finally, setting the gain parameters of the position loop control loop. By adopting the method, the servo system can automatically set the gain parameters of the servo control loops, including a position loop proportional gain Kp, a speed loop proportional gain Kv, a position loop integral time constant Ti and a torque filter time constant Tf, during the reciprocating motion; moreover, the low-frequency jitter suppression at the tail end of the load and vibration suppression of mechanical resonance are finished, the tuning process of the servo system is simplified effectively, and the automation degree and intelligence level are increased.

The invention discloses a power grid phase detection system. The system comprises a voltage detection link, a lowpass filtering link, a notch link, and further comprises an amplitude detecting link, and the lowpass filtering link and the notch link are embedded in a phase-locked loop; the invention further includes a phase detection method. According to the system and the method, through the embedded lowpass filtering link and notch link, low-frequency, medium-high-frequency harmonic components of power grid voltage are suppressed and the process of controller tuning is simplified without considering the influence of phase delay.

The invention discloses a global fast terminal sliding mode control method based on an invariant manifold observer, relates to underwater robot control, and solves the technical problems of chattering and difficult parameter adjustment of an existing underwater robot. Motion parameters of the underwater robot are analyzed through an invariant manifold observer constructed based on an invariant manifold so as to obtain observation values of system uncertainty and external interference; and a continuous control law used for controlling the underwater robot to move is obtained by analyzing the observation value through a global fast terminal sliding mode control algorithm added with a function item. According to the method, parameter adjustment is simple, the convergence speed is high, the observation error is small, the anti-interference and anti-noise performance of an underwater robot system is effectively improved, the buffeting-free characteristic is achieved, and buffeting is fundamentally eliminated.

The invention discloses a multi-domain non-cooperative distributed retrieval result fusion system and a fusion method thereof. The system comprises a data processing module, a feature extraction module, a model training module, a central processing module and a correlation scoring module; the data processing module is used for storing corpus data and cached data needed by the system and providing interfaces for the outside to interact with other modules; the feature extraction module is used for extracting multi-domain features from training corpus or retrieval results; the model training module is used for training a model, wherein the training of the model includes model initialization and model learning; the central processing module is responsible for flow processing of distributed retrieval result fusion and interacting with the other modules and is the implementation part of the core logic of the system; and the correlation scoring module is sued for performing global correlation scoring on query results. With the multi-domain non-cooperative distributed retrieval result fusion system and the fusion method thereof of the invention adopted, the problem of incapability of directly comparing different retrieval results due to the difference of retrieval models under a non-cooperative environment can be solved, and the problem of complex parameter adjustment of a heuristic method can be also solved.

The invention provides a sudden short circuit test method based on a power electronic high-power power supply, and the method comprises the steps: calculating parameters of a wave modulation element according to loop parameters and the requirements for a waveform, and then calculating the instantaneous value of a voltage loaded on a test object according to the loop parameters after the wave modulation element is added, and loading the waveform into a high-power power supply based on a power electronic device as a modulation signal, so that the high-power power supply based on the power electronic device can realize the flexibility of the output waveform, and provides possibility for providing and outputting a special voltage waveform. By changing the voltage output waveform, the effect ofadding a wave modulation element in the system can be simulated, the cost of a hardware wave modulation element is saved, and meanwhile, the wave modulation process is simplified.

The embodiment of the invention discloses a system testing method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring to-be-tested sample data; inputting the text statements into a to-be-tested system, and obtaining evaluation parameters of query results corresponding to the text statements recalled by the to-be-tested system; if the evaluation parameter meets a preset threshold, taking the query result as a target query result; and if the target query result is matched with the reference query result, judging that the to-be-tested systemis recalled accurately. Under the condition that the evaluation parameter of the query result corresponding to the text statement recalled by the to-be-tested system meets the preset threshold value,the corresponding query result is taken as a target query result, so as to judge that the recall of the to-be-tested system is accurate under the condition that the target query result is matched withthe reference query result, so that the recommendation performance of the to-be-tested system is comprehensively judged through a single index, and the parameter adjustment process of the to-be-tested system is simplified.

The invention belongs to the technical field of chemical energy instruments, and particularly provides a three-point adjustment method for an adjusting valve with an electric valve positioner. The method comprises the following steps of connecting an adjusted adjusting valve with a signal generator; inputting a signal m1 into the adjusted adjusting valve, and recording a corresponding valve position display value n1; inputting a signal m2, and recording a valve position display value n2 corresponding to m2; calculating a difference value between n2 and n1, and comparing the difference value with 50% of a total stroke; adjusting a range knob according to a comparison result until the difference value is equal to 50% of the total stroke; and inputting a signal m3, adjusting the valve position display value to a position which is 50% of the total stroke through a zero setting knob, and finishing adjustment. The problems of complex adjustment process, long adjustment time, large error in astarting point confirmation process, difficulty in finding a maximum defect zero point and incapability of mastering the essence and principle of adjustment by an operator in a five-point method aresolved; and three-point adjustment is realized, the adjustment process is simple, the principle is fairly self-explanatory, the efficiency is high, the accuracy is high, errors are avoided, and the operator can easily master and understand the adjustment principle.