16results about How to "Implement Feedback Control" patented technology

The invention discloses a voice coil servo valve element position control method and system based on ADRC. The invention relates to the technical field of liquid control systems. And inputting an input data sequence S serving as an electric signal of the target position of the valve core into the bidirectional Bi-GRU network of the coding layer. In each gating circulation unit, a tracking differentiator TD, an extended state observer ESO and a nonlinear state error feedback NLSEF are integrated to form an embedded ADRC model; the processor processes input data. The bidirectional Bi-GRU network extracts a time sequence dependency relationship in the input data sequence S from the forward direction and the backward direction at the same time to generate a hidden state sequence H; according to the method, the time sequence dependency relationship in the input data sequence is extracted from the forward direction and the backward direction at the same time, and the bidirectional Bi-GRU network can more comprehensively capture the dynamic characteristics in the data, so that the accuracy and robustness of data processing are improved. And carrying out feature extraction and clustering analysis on the specific sequence by using an ordered clustering algorithm.

The invention belongs to the technical field of semiconductor manufacturing equipment, and discloses a DPP type extreme ultraviolet light source chip comprehensive filtering device and a method thereof. The DPP type extreme ultraviolet light source scrap comprehensive filtering device comprises a scrap introducing part, a vacuum difference part, a gas purging part, a foil trap filtering part, an atomic hydrogen part, a delayed field ion energy analyzer part, a quartz crystal microbalance part and a control and monitoring system. According to the device disclosed by the invention, various cleaning mechanisms (vacuum difference, gas purging, foil trap filtering and atomic hydrogen reaction) are combined, and a high-precision monitoring system (an ion energy analyzer and a quartz crystal microbalance) is introduced, so that the pollution of fragments of different types and different particle sizes can be effectively filtered and relieved. Meanwhile, the real-time online monitoring system can adjust the working state of each cleaning mechanism in time according to a monitoring result, so that efficient and accurate debris cleaning is realized, the service life of a photoetching system component is prolonged, and the photoetching efficiency is improved.

The utility model discloses a power generation system and device. The power generation system comprises a conversion module, a voltage transformation module, a control module, a sampling module and a display module. The conversion module is connected with an alternating current power supply and the voltage transformation module, the conversion module is used for converting the alternating current power supply into a direct current power supply provided for the voltage transformation module, the control module is connected with the voltage transformation module to generate a control signal, and the voltage transformation module is used for performing voltage transformation on the direct current power supply based on control of the control signal and generating an output signal; the sampling module is connected with the voltage transformation module and the control module, the sampling module is used for sampling voltage and current of the output signal, generating a sampling signal and transmitting the sampling signal to the control module, and the control module is further used for adjusting the control signal based on the sampling signal. According to the power generation system and device, the output signals are sampled, and the control module is utilized to adjust the output of the voltage transformation module according to the sampling result, so that the feedback control is realized, and the fine power control capability is improved.

The invention provides a microwave control method and a microwave controller for an electron paramagnetic spectrometer. The microwave control method for the electron paramagnetic spectrometer comprises the following steps: controlling a microwave source to generate a microwave signal for paramagnetic resonance detection; a first power division signal and a second power division signal are obtained through distribution; inputting the first power division signal into a resonant cavity, detecting a reflection signal of the resonant cavity after resonance absorption of the to-be-detected sample to obtain a first detection signal, and performing phase shift on the second power division signal to obtain an orthogonal local oscillation signal; performing frequency mixing on the first detection signal and the local oscillator signal to obtain an I down-conversion signal and a Q down-conversion signal; performing data processing to obtain detection result information; and error analysis is performed and the microwave source is corrected, so that the frequency of the output microwave signal is kept at the first working frequency. By establishing a feedback loop from output to microwave signal input of the microwave source, feedback control of microwave signals is realized, and high-precision microwave control in the electron paramagnetic spectrometer is further realized.

The present invention relates to the field of metal heat treatment technology, and specifically discloses a liquid-air intermittent quenching production line for forged grinding balls based on the Internet of Things, comprising at least two liquid quenching devices and at least two air quenching devices, the liquid quenching devices and the air quenching devices are alternately arranged, each liquid quenching device and the air quenching device comprises a screw propeller and a temperature acquisition module, the temperature acquisition module is used to collect the grinding ball temperature at the output end of the corresponding liquid quenching device or the air quenching device, and also comprises a control system, all temperature acquisition modules are connected to the control system, and the control system can control the speed of the screw propeller when the real-time grinding ball temperature collected by the temperature acquisition module deviates from the system preset grinding ball temperature. This scheme is used to solve the problems of inaccurate temperature control and inconvenient backtracking of process parameters in the heat treatment process technology in the prior art, resulting in inconsistent grinding ball quenching quality and low yield rate.

The invention relates to the field of bridge construction, in particular to a method, a system and equipment for integrally lifting and optimizing an arch bridge. The invention innovatively provides an arch bridge overall lifting optimization calculation method, and solves many problems in the aspects of precision, efficiency and cost of a traditional arch bridge overall lifting control method. The combination of the tower position, the temporary tie bar position and the temporary horizontal tie bar force is systematically optimized, so that the line shape of the finished bridge is optimal, and the construction work amount of the tower is reduced. And finally, depending on an intelligent monitoring system, real-time monitoring and feedback control of overall lifting of the arch rib are achieved, powerful technical support is provided for high-precision control of overall lifting of the arch bridge, and extremely high practical value and wide popularization prospects are achieved.

The utility model discloses a production line half-part water control device, which relates to the technical field of half-part water control and removal and comprises a humidity detection probe, a high-pressure fan and a blowing component. The high-pressure fan is arranged on the right side of the humidity detection probe and fixedly connected with the ground, the upper portion of the left side of the high-pressure fan communicates with an upper air storage chamber, and the lower portion of the left side of the high-pressure fan communicates with a lower air storage chamber; the air blowing assembly communicates with the output end of the upper air storage chamber and is used for blowing air to the tread. Through PLC process control, the water control and removal control system is high in intelligent degree, can realize feedback control, is high in precision, accurate and convenient, and saves labor; by controlling the size of the blowing angle, the control process of off-line water control and water removal of the half parts is achieved.

The utility model belongs to chemical engineering separation field especially relates to a spiral guide plate energy -saving rectifying tower, including support plate, rectifying tower body, liquid inlet pipe, float valve tray and guide plate etc.

The present invention discloses a gas-solid separation device and system for treating VOCs waste gas, and relates to the technical field of waste gas treatment devices. The gas-solid separation system comprises a return air duct, a three-way valve, a particle concentration detector, a high-pressure chamber, a pressurized tank connected to the interior of the high-pressure chamber, and an adsorption system. The gas-solid separation device comprises a separation tank body and an arc-shaped duct connected to one end of the separation tank body for air intake, wherein the arc-shaped duct is in a bent structure, and a collecting box is provided at a side wall of the arc-shaped duct close to the outside; the interior of the separation tank body is in a conical structure, and the inner diameter gradually decreases from one side of the separation tank body close to the arc-shaped duct to the other side of the separation tank body to form a conical chamber; a gas-solid separation component is provided inside the separation tank body. The present invention can perform fine filtration on particulate matter of different particle sizes in the waste gas, and at the same time adopts a reflux system to prevent the waste gas that does not meet the treatment standards from entering the subsequent treatment steps to protect the subsequent treatment equipment from wear.

The utility model provides a robot motion trail simulation device which comprises a case, an adjusting mechanism, a robot body and a fixing mechanism, the top end of the case is provided with the adjusting mechanism, the periphery of a supporting plate is fixedly connected with electric telescopic rods, one end of each electric telescopic rod is fixedly connected with a first arc-shaped plate, and the other end of each electric telescopic rod is fixedly connected with a second arc-shaped plate. And the outer wall of the first arc-shaped plate is sleeved with a first arc-shaped sleeve, and the combination of an electric telescopic rod, the first arc-shaped plate, the first arc-shaped sleeve, a second arc-shaped plate, a second arc-shaped sleeve and other parts in the adjusting mechanism enables the robot motion trail simulation environment to be flexibly adjusted according to actual requirements. Different working spaces and motion scenes can be simulated through stretching and retracting of an electric telescopic rod and change of the position of a second arc-shaped plate on an adjusting rod, and the simulation accuracy and flexibility are improved.

This invention discloses a quantitative coal mining control system for preventing excessive gas levels in coal mines, including a gas volume fraction monitoring probe, a safety early warning and monitoring module, and a gas exceeding limit quantitative control module. The gas volume fraction monitoring probe includes a monitoring probe T1 located at the end of the transport roadway near the coal mining face, a monitoring probe T2 located at the coal mining face, a monitoring probe T3 located at the end of the return airway near the coal mining face, a monitoring probe T4 located at the end of the return airway away from the coal mining face, and monitoring probes T1, T2, T3, and T4 are respectively connected to the safety early warning and monitoring module and the gas exceeding limit quantitative control module.

The invention discloses a real-time monitoring system and method for the angle of an intermediate-frequency bent pipe. Most pipe bending equipment adopts a mode of measuring an angle after forming, and the equipment is adjusted according to a measurement result. The method not only is low in efficiency, but also possibly causes increase of the rejection rate, and an existing angle monitoring technology is difficult to adapt to high-temperature and high-dynamic complex working conditions in the pipe bending process, and cannot provide real-time angle data in the pipe bending process. The device comprises an arc length detection device which is installed in a bent pipe and synchronously moves along with the pipe; the data processing module is used for receiving the arc length data transmitted by the detection device and calculating a bending angle in real time by combining a preset bending radius; the signal transmission module is used for transmitting the angle data to a control system to realize real-time feedback; the display and alarm module is used for displaying the bending angle and deviation in real time, and when the deviation exceeds an allowable range, an alarm device is triggered. The method is used for real-time monitoring of the medium-frequency elbow pipe angle.

The invention discloses a novel rapid convergence method for self-adaptive control of helicopter body vibration, and belongs to the field of active control of helicopter vibration. The method aims at solving the problems that in the helicopter vibration control process, a feed-forward control method is low in convergence speed, a feedback control method is difficult in full-state recognition, recognition errors easily cause control effect decline and the like, and the method is based on convergence characteristics of self-adaptive harmonic control and a linear matrix inequality method. According to the novel rapid convergence method for helicopter body vibration self-adaptive control, self-adaptive harmonic feedforward-sliding mode output feedback combined control is adopted, and the purpose of rapidly reducing helicopter body vibration is achieved. The control method provided by the invention has low requirement on modeling precision of a control system, does not need full-state identification of the system, has good control effect and convergence characteristic, and has excellent self-adaptability when the vibration load of the helicopter changes.

The application discloses a kind of based on optimization fuzzy PID's coating equipment servo motion control method and system.Method includes: build virtual simulation platform, motion model is constructed on the simulation platform, PI coating equipment system external environment data is input into motion model, and the target rotating speed of PI coating equipment even glue roller is output;The actual rotating speed of even glue roller on PI coating equipment is measured;Difference is obtained between target rotating speed and actual rotating speed, and the change rate of bias is obtained by derivation of the rotating speed bias with respect to time;Rotating speed bias and bias change rate are input into fuzzy PID controller, and the PID control parameter is obtained by using fuzzy PID algorithm combined with adaptive particle swarm optimization algorithm, and PID control parameter is input into PID controller to adjust, so that the actual rotating speed of even glue roller reaches target rotating speed.The application can effectively improve the control precision of PID control algorithm, and improve the stability of PID control algorithm.

The utility model relates to the technical field of laser systems, and discloses a multichannel laser system with a spectral energy feedback function, which comprises a nonlinear optical unit, the outer surface of the nonlinear optical unit is fixedly connected with a connecting end, and the other end of the connecting end is fixedly connected with a pump light incident mirror. The lower surface of the nonlinear optical unit is fixedly connected with a chopper, the lower surface of the chopper is fixedly connected with a wavelength selection lens A, the lower surface of the chopper is fixedly connected with a wavelength selection lens B, and the lower surface of the chopper is fixedly connected with a pump light wave band reflector. The chopper provided by the utility model realizes the selection between two light beams with different wavelengths output coaxially and a third light beam with different wavelengths output by another shaft through a sliding flat plate structure, and the optical axes output by the light beams are the same optical axis regardless of the selection result. And the number and the size of parts required by the multi-channel switching optical system are reduced.

This invention discloses an acoustic valve microrobot manipulation system and method. An acoustic transducer is movably mounted below a mechanical frame, which has a microchannel structure. A coupling layer is provided between the acoustic transducer and the microchannel structure. The acoustic transducer provides a focused acoustic beam that acts within the microchannel structure to generate a standing wave sound field. This standing wave sound field forms a spatially constrained sound pressure gradient region within the microchannel structure, constructing an acoustic potential well structure. A bright-field optical path and an image recognition module are both mounted on the top of the mechanical frame. The image recognition module is used to identify the position of targets within the microchannel structure. A motion control module is movably mounted at the bottom of the acoustic transducer to regulate the signal of the acoustic transducer and control its displacement on the mechanical frame. This invention enables selective manipulation of targets by utilizing the boundary effect of the focused field, integrating functions such as translation, sorting, and enrichment.