151 results about "Passive control" patented technology

The invention belongs to the technical field of hypersonic flight vehicle control, and relates to a rigid-elastic coupling-oriented active and passive integrated control method for a hypersonic flight vehicle. The invention aims to realize stable tracking control of the elastic hypersonic flight vehicle. The method comprises the following steps: constructing a longitudinal dynamic model of the elastic hypersonic aircraft; self-adaptive identification of the elastic vibration frequency is realized through a cascaded self-adaptive filter; an elastic modal filtering estimation method is designed, and high-precision and low-cost elastic modal state quantity is provided for subsequent active feedback controller design; and then rigid-elastic coupling model decomposition is carried out, the control performance is ensured by using active disturbance rejection passive control for a rigid body subsystem, an RBF neural network is introduced for an elastic subsystem, an elastic mode is actively inhibited by using sliding mode control, and stable tracking of a reference instruction is realized. The method is an active and passive integrated control method for the hypersonic flight vehicle oriented to rigid-elastic coupling, and the application prospect is wide.

The invention discloses a yaw collecting ring temperature intelligent control system, method and device, a medium and a product, and relates to the field of wind power generation, and the method comprises a temperature collection unit which is used for collecting temperature information of the surface of a collecting ring in real time; the temperature characteristic analysis unit is used for processing the temperature information to obtain a multi-dimensional temperature characteristic value; the data management unit is used for collecting multi-dimensional temperature characteristic values to construct a historical database; the temperature prediction and abnormality diagnosis unit is used for obtaining a temperature prediction result and an abnormality judgment result based on historical data in the historical database and the real-time multi-dimensional temperature characteristic value; the temperature control unit is used for adjusting the working temperature of the collecting ring on the basis of the real-time temperature information when the temperature prediction result exceeds a preset safety threshold value or the abnormity judgment result shows an abnormal condition; according to the method and the device, the crossing from passive control to active prediction can be realized, so that the problem that predictive maintenance is difficult to realize in the traditional technology is effectively solved.

The invention provides a spinach cleaning quality detection method based on image recognition, and relates to the technical field of image or video recognition. A closed-loop control framework integrating active detection, cross-modal sensing, physical modeling decoupling and intelligent decision optimization is constructed; cleaning efficiency and quality bottlenecks caused by single information dimension and passive control mode in the prior art are fundamentally solved; the self-adaptive cleaning device has the final beneficial effects that the energy consumption and the water consumption of a unit product are greatly reduced by precisely putting water flow energy according to requirements while the cleaning cleanliness stability under complex working conditions is remarkably improved, and self-adaption and self-optimization of the whole cleaning process are realized.

The invention discloses an intelligent shock absorption and noise reduction control method for rail transit, and belongs to the technical field of rail transit noise and vibration control. The method aims at solving the problems that traditional passive control measures are poor in adaptive capacity and limited in frequency band, and effective prospective offset is difficult to achieve due to system delay and inaccurate reference signals in existing active control. The method comprises the following steps: synchronously acquiring vibration and noise signals through a sensor array; calculating the contribution weight of vibration to noise by using a cross-domain modal correlation module based on an attention mechanism, and fusing the features; predicting an evolution sequence of vibration and noise in a specific time period in the future by adopting a long-short-term memory network model; synthesizing a target reference signal according to the prediction sequence, and generating an anti-phase control signal through an adaptive filtering algorithm; finally, it is ensured that the total delay of the system is smaller than the feedforward advance time, and an actuator is driven to achieve accurate foresight counteracting. The method is mainly used for improving the self-adaptive capacity and the control effect of the rail transit damping and noise reduction system.

The invention discloses an intelligent hydraulic interconnected suspension system and a control method thereof, and belongs to the technical field of vehicle suspensions.The intelligent hydraulic interconnected suspension system comprises a hydraulic assembly, an adjusting assembly and an energy storage assembly, and interconnected hydraulic pipelines of hydraulic cylinders at the four wheel ends of a vehicle are reasonably arranged, matched with an energy accumulator, an adjustable damping valve, a control valve set and an adjusting oil cylinder; passive control, semi-active control and active control of the vehicle can be achieved, so that side-tipping resistance, pitching resistance, vertical resistance, multi-rigidity adjustment, damping stepless adjustment, vehicle body lifting, height adjustment of a front axle and a rear axle of the vehicle, rigidity active regulation and control and rigidity active regulation and control after height regulation and control of the vehicle are achieved, and the overall structure is simple and convenient to debug and maintain.

The embodiment of the utility model provides a charger output anti-reverse connection and anti-reverse charging protection device, and belongs to the technical field of charging safety. The charger output anti-reverse connection and anti-reverse charging protection device comprises a relay arranged at the output end of a charger and used for executing connection / disconnection of a charging loop through actuation / disconnection; the relay is connected with a relay control circuit and is used for controlling the relay to be switched on or switched off along with the voltage state of the charging loop; the detection circuit is connected to the charging loop and used for responding to the voltage state of the charging loop; and the charging loop is also connected with the relay control circuit, and transmits the voltage state to a relay driving module of the relay control circuit in real time. According to the scheme of the utility model, complicated signal judgment is not needed, passive control is realized only by depending on the voltage state, the system complexity is reduced, the protection on the charger and the battery is enhanced, and the service life of equipment is prolonged.

The application discloses an experimental device containing a uniform distribution gyro truss structure, which comprises a first connecting piece, a first rod, a rotor, a brushless motor, a motor connecting plate and a truss fixing plate. The first connecting piece and the second connecting piece are both assembled into the end face of the free end of the gyro truss structure through interference fit with the first rod, the second rod and the third rod. The four interface nodes of the first connecting piece and the second connecting piece are connected respectively. The third connecting piece and the fourth connecting piece are assembled into the gyro truss unit through interference fit with the first rod, the second rod and the third rod for multiple times. Each gyro truss unit is connected into the main body structure of the truss in the form of module. The brushless motor adds angular momentum to the truss structure. The vibration of the truss is suppressed through the uniform distribution gyro truss structure, which belongs to passive control. Compared with the PID control mode, the application has the advantages of quick reaction, low cost and fast effect.

A jacket assembly 100 is provided for attachment to a subsea flexible line for facilitating passive control of movement of the flexible line. The jacket assembly comprises a plurality of jackets (FIG

The invention discloses a power cost control active-to-passive control conversion circuit, a converter and a wiring method, and relates to the technical field of power cost control. The control conversion circuit comprises an analog-to-digital conversion unit, an isolation unit, a delay unit, a trigger unit and an output unit, the control conversion circuit is connected in series in a control loop between the intelligent electric energy meter and the circuit breaker, and an alternating current control signal sent by the intelligent electric energy meter is converted into a passive contact to be output through the control conversion circuit. Therefore, switching-on and switching-off control of the circuit breaker is realized, and the problems that a protection device cannot be additionally arranged in an active output mode and cost control of a simple circuit breaker containing high-supply and low-metering users cannot be realized are solved.

The application discloses a multi-point control system for building horizontal vibration, which comprises a plurality of main-passive hybrid tuned mass dampers and a control system. The main-passive hybrid tuned mass damper comprises a tuned mass damper and an actuator arranged on both sides of the motion direction of the tuned mass damper. The control system comprises a collector for collecting floor displacement and acceleration signals, and a controller. The actuator is electrically connected with the controller. The controller judges whether to take active or passive control according to the floor displacement and acceleration signals collected by the collector. The controller judges whether the actuator works and controls the force required according to the floor displacement and acceleration signals collected by the collector. The application is provided with a plurality of main-passive hybrid tuned mass dampers, which is a main-passive hybrid control system. Even if the active control part fails, the passive control part can still ensure partial vibration reduction effect, and the application has good robustness.

The invention relates to the technical field of air curtain machine control, in particular to an air curtain machine intelligent airflow control system based on computer vision, which comprises a sensing module, a data processing module, an execution module, an environment sensing module and a control module, the motion trail identification module is used for identifying a real-time motion trail of a motion target in the real-time video data through a computer vision algorithm and predicting a future motion trail of the motion target through a prediction algorithm; compared with the prior art that a passive control scheme adopting fixed wind speed or simple infrared triggering has the defects that energy consumption is high and airflow is stiff and abrupt, an active pre-control strategy based on computer vision prediction is adopted, the pedestrian trajectory is accurately predicted, and a matched airflow barrier is established in advance, so that the pedestrian trajectory is accurately predicted. Effective combination of non-inductive passing experience and on-demand energy supply is realized, and the system has the advantages of remarkably improving comfort and greatly reducing ineffective energy consumption.

The application discloses a kind of hypersonic speed cavity flow induced noise passive control device and control method, it is suitable for Mach number 4.0 flow M219 classic open cavity, its size is normalized with the cavity depth as benchmark, cavity length-width-depth ratio 5:1:1, at the bottom of cavity downstream, from the front wall, setting integrated three-dimensional small-size continuous triangular pyramid turbulence device, length-width-height size is,, Using aviation titanium alloy or high-temperature alloy;The installation position is determined by IDDES simulation, the scale of downstream backflow vortex is reduced by using turbulence structure, the impact of bottom wall is weakened, self-sustaining oscillation is inhibited, the peak value of Rossiter low-frequency mode is reduced, and the maximum total sound pressure level is reduced by about 4dB.The application is pure passive control, without additional energy consumption, simple structure, suitable for noise suppression of cavity structure such as internal embedded bomb cabin of hypersonic vehicle.

Apparatuses, systems, and methods are disclosed for regulating an eversion process in everting sheath systems to avoid uncontrolled deployment of the sheath. The sheath system includes a reel and a sheath stored thereon, where the sheath is capable of everting from a retracted position to an extended position as the reel rotates about a rotational axis. The rotational characteristics of the reel are controlled by a torque mechanism operable to directly or indirectly apply a passive torque to the reel to adjust a rate at which the sheath is released from the reel as the sheath everts from the retracted position to the extended position.

The application discloses an airplane ground air conditioner energy-saving control method combining environmental parameter prediction, and relates to the technical field of airplane ground support equipment. The method comprises the following steps: collecting airport environmental parameters in real time, training a machine learning prediction model in combination with historical data, and predicting environmental change trends in advance; analyzing the thermal characteristics of an airplane according to the characteristics of the airplane, performing landing time error compensation, and accurately obtaining an environmental parameter sequence of a landing period; calculating an environmental parameter and a cabin thermal characteristic deviation coefficient, and dynamically configuring temperature and energy-saving weights; and iteratively optimizing air conditioner control parameters by using a multi-objective optimization algorithm to obtain optimal air conditioner control parameters. The application realizes the transformation from passive control to active prediction, effectively solves the problems of control lag and high energy consumption in the prior art, significantly reduces energy consumption while ensuring comfort, and improves the intelligent level and operation efficiency of an airplane ground air conditioner system.

The application provides a dolphin head profile imitated biomimetic leading edge slot wing, a blade and a preparation method. The biomimetic leading edge slot wing is made of a leading edge slot wing profile based on a dolphin head profile. The leading edge slot wing profile is obtained by tangent transition connection of a biomimetic leading edge profile line and an inner profile line of the leading edge slot wing profile through a smooth transition line. The dolphin head profile is obtained by equal ratio scaling according to the size of a basic blade airfoil. The corresponding part of the basic blade airfoil leading edge and the biomimetic leading edge profile line is the inner profile line of the leading edge slot wing profile. The application is based on a passive control technology. The biomimetic leading edge slot wing is designed according to the characteristics of a dolphin head. The biomimetic leading edge slot wing and the basic blade are directly connected through an adjusting device and a slot wing connecting piece. The aerodynamic performance of the blade is improved without changing the overall shape of the basic blade, so as to inhibit the negative influence of flow separation and dynamic stall on the blade.

The application provides a passive control device and design method for dead-zone operation precision of a reciprocating mechanism. The device is installed on a sliding block of the mechanism, and comprises a vibrator, an amplitude limiting device and a nonlinear energy sink (NES). The distance between the amplitude limiting device and the vibrator is continuously adjustable. The mass ratio of the vibrator to the sliding block is between 1% and 5%. The application can generate a larger control force under a smaller vibrator mass by using the amplitude limiting device, and solves the problem of poor positioning precision of the mechanism caused by the gap between mechanisms by combining the nonlinear control force generated by the NES. The application does not depend on the state observation of the controlled mechanism, and effectively reduces the complexity of the control structure without increasing the connecting structure between the controlled mechanism and the fixed frame.

The application discloses a chip bottom layer topology control method and system based on discrete space-time dual mapping, and belongs to the technical field of integrated circuit bottom layer intelligent control. In view of the bottom layer defects of traditional chip hardware and information being split, relying on external driving, architecture being solidified, scheduling being redundant, and lacking self-adaptive evolution capability, the application is based on the original TPS-CCC discrete space-time information-physical dual theory, constructs a three-dimensional topological dual mapping system, establishes hardware native topological evolution driving logic, and realizes chip computing power autonomous scheduling, hardware self-adaptive reconstruction, error self-healing correction and dynamic power consumption optimization. The application overturns the software passive control paradigm of the traditional chip, creates the next-generation chip bottom layer general paradigm of hardware-level autonomous intelligent control, has extremely high bottom layer theoretical barriers and full-coverage protection range, can be adapted to all types of high-end semiconductor chips, and has extremely strong industry monopoly and industrialization value.

This invention discloses a vibration reduction device for pipelines crossing embankments based on hybrid adaptive control of MRD and TMD. The device includes a hollow rubber ring, a tuned mass damper, and a magnetorheological damper. The tuned mass damper and the magnetorheological damper are installed parallel to each other within the hollow rubber ring. The lower ends of the tuned mass damper and the magnetorheological damper are fixed to the ground, while their upper ends are fixed to the pipeline via pipe clamps. This vibration reduction device is applied to the vibration control of long-distance hydraulic pipelines crossing embankments. Compared to single active or passive control, this device offers a wide range of output damping forces, superior control effect, and high fault tolerance. Based on the pipeline vibration response, a data processing module and a control module output a real-time adjustable damping force, significantly reducing the vibration response of long-distance water conveyance and regulation pipelines crossing embankments in hydraulic structures.

The application discloses a kind of multi-energy distribution network voltage control methods, comprising the following steps, define local voltage control rule;Analysis distributed power output causes voltage fluctuation upper and lower limit;Build global voltage control function;Algorithm is solved to objective function, the local voltage control rule is acquisition control point voltage u, determine whether to satisfy the following constraint, set the reactive power output of voltage compensation device.The multi-energy distribution network voltage control method, considering the uncertainty fluctuation of distributed power supply, improve the accuracy of voltage fluctuation analysis, formulate the localized voltage adjustment rule and global voltage optimization function, realize passive control and active control combination, reduce fluctuation rate, using interval number to express the uncertainty of distributed power supply, less computing resource demand, control reaction speed is fast.

The present application relates to the field of metal continuous casting automation control, and discloses a copper rod processing and manufacturing process linkage control system and method, the method comprising: dividing the cast blank into virtual slices according to the pulse signal to construct a data queue; calculating the heat content characteristics of the temperature and flow signals, processing abnormal data and marking characteristic anchor points; combining the linear speed to deduce the theoretical time stamp of the slice reaching the rack; comparing the torque differential polarity and the heat content mutation direction within the theoretical time window to verify the signal, extracting the actual time stamp to correct the theoretical time stamp; generating a feedforward torque instruction according to the heat content characteristics and issuing it to the frequency converter. Through the cross-checking of thermal state and mechanical dynamics and the adaptive correction of the time stamp, the temperature measurement distortion interference is eliminated, the spatial accurate alignment is realized, the torque reserve is established before the abnormal material contacts the rack, the hysteresis of the traditional passive control is overcome, the tension shock is reduced, and the risk of belt breakage is reduced.

The application discloses an active isolation-passive damping-energy recovery integrated composite isolation wall, belonging to the field of rail transit, comprising a magneto-rheological damping unit, a linear motor displacement control unit, a passive vibration control module, a bottom support element, a top covering module and the like; the magneto-rheological damping unit guarantees controllable damping force of the magneto-rheological damping unit through the magneto-rheological effect of magneto-rheological fluid in a cavity, and actively controls the train track in real time; the linear motor displacement control unit accurately adjusts the system displacement, and realizes active vibration control; the passive vibration control module realizes efficient vibration energy attenuation through cooperation of various elements; the bottom support element provides bearing and stable support, and the top covering module has vibration monitoring and vibration energy conversion and protection functions. The isolation wall combines real-time adjustment of active control and energy dissipation of passive control, constructs a multi-stage vibration control strategy, adapts to different vibration environments, and improves the stability and safety of the rail system.

The present application relates to a kind of near-earth formation satellite PID passive control method, comprising the following steps: step S1, establish near-earth orbit formation port Hamilton system dynamics model;Step S2, establish passive PID controller according to dynamics model, additional system is constructed, and according to Lyapunov function demand, partial differential equation is solved;Step S3, according to the requirement of equilibrium point, design Lyapunov function, and determine additional system integral item initial value;Step S4, establish PID passive controller based on additional system integral item initial value.The present application effectively avoids the problem that PID controller parameter selection is difficult, and large-scale system performance is poor, and passive PID control method can be simply and effectively established for near-earth orbit satellite formation Hamilton dynamics system, which is beneficial to the design of controller.

The invention relates to a method for controlling a voice coil of a loudspeaker, comprising the steps of providing a magnetic circuit with an air gap, providing a voice coil suspended in the air gap, and applying an audio signal to the voice coil to move the voice coil along an axis of motion. The voice coil comprises a middle voice coil section, an upper voice coil section, and a lower voice coil section, arranged on the respective sides of the middle voice coil section. A middle control signal is supplied to the middle voice coil, and an upper rectified control signal, which attenuates a first current direction, and a lower rectified control signal, which attenuates a second current direction, are supplied to the upper and lower voice coil sections, respectively.The invention further relates to a voice coil control system and a loudspeaker with a voice coil control system.

The application belongs to the technical field of communication automation, and discloses a communication automation link cooperative optimization regulation and control and self-recovery intelligent system and an application method. The application breaks through the technical bottleneck of traditional communication automation, i.e. "link isolated scheduling, time delay passive control and fault fuzzy disposal", and significantly improves the link cooperative efficiency, time delay prediction accuracy, fault tracing accuracy and self-recovery timeliness through modeling innovation and efficiency design, so as to adapt to the communication automation scenes such as industrial internet, smart grid, remote medical treatment and vehicle networking which have high requirements on link cooperation, time delay controllability and fault tracing capability. The application has clear innovation points and no repetition with the existing invention, and fills the gap of communication automation link cooperative optimization, time delay prediction regulation and control and fault tracing self-recovery.

Methods and systems for controlling one or more pumps of a heart-lung-machine. An illustrative method may comprise receiving an actual flow rate of a pump, determining the actual flow rate is from a primary pump, determining an available amount of the actual flow rate of the primary pump that is available to one or more subordinate pumps, comparing the available amount of the actual flow rate of the primary pump to a sum of set flow rates of the one or more subordinate pumps, and operating the one or more subordinate pumps in a proactive control mode or a reactive control mode.

The invention relates to an offshore new energy equipment test platform based on a floating platform active and passive control system and a test method, a mooring system is arranged outside the platform, an outer connecting substrate and an inner connecting substrate are respectively arranged on the outer surface and the inner surface of the platform, and a fan tower reinforcing base is arranged at one end of the top surface of the offshore new energy equipment test platform; a fixed ballast water system is arranged in the offshore new energy equipment testing platform, active control ballast water systems are arranged at the four corners of the exterior of the fixed ballast water system respectively, and oscillating liquid column damping type ballast water systems are arranged outside the active control ballast water systems. The fixed ballast water system, the active control ballast water system and the oscillating liquid column damping type ballast water system do not interfere with one another. The platform has the advantages of being convenient to install and debug on site, adjustable in motion performance, good in adaptability of offshore new energy development equipment and the like, and a new test platform is provided for offshore tests of wave energy power generation equipment, temperature difference energy development equipment, offshore wind turbines and other systems.

The application provides a multi-branch spacecraft layered passive whole-body compliant control method, which is a spacecraft whole-body control method combining a cooperative control theory, a layered control theory, a passive control theory and an impedance control theory. The method has the advantages that multi-stage compatible control of end effector compliant contact and whole-body configuration maintenance can be realized, an adaptive variable impedance control strategy is introduced in the end compliant control layer, the safe compliant contact with a target is solved, and a system passivity compensation controller based on an energy tank is embedded in each control layer, so that the safety and stability of the system during operation can be ensured.

The present application relates to a kind of compact railway energy regulation complex and its control method, including the converter unit with the core of medium-frequency transformer, the magnetic field of medium-frequency transformer is to the decoupling inductance of collision and filter capacitor and is constituted the second harmonic filter branch of converter unit DC side, filter each converter unit DC side in single-phase conversion system The second harmonic component is removed.Compact railway energy regulation complex uses double-phase shift control and passive control etc.Control method, can accurately control the power flow distribution of two power supply arms and realize traction transformer primary side three-phase current balance control, and using the linear quadratic regulator LQRI control method based on band integration is carried out energy comprehensive regulation, can effectively suppress the voltage fluctuation of feeder side, improve the comprehensive energy utilization rate and new energy consumption rate of electric railway system.Because of the existence of medium-frequency transformer, compared with the electric energy regulation device with the basic topology of traditional railway power regulator, compact railway energy regulation complex has higher integration.

The application provides a split-acting oil-gas active suspension and a control method. The suspension comprises a suspension controller, a hydraulic actuator, a motor actuator electrically connected with the suspension controller, and a sensor for collecting motion state information of the suspension system, the motor actuator is connected with the hydraulic actuator through a hydraulic oil pipeline; the suspension controller outputs a control signal to control the motor actuator according to a certain control algorithm based on the sensor output signal, the motor actuator drives the hydraulic actuator to act through hydraulic transmission, thereby realizing active control of the suspension system. The application retains the hydraulic actuator of the traditional passive oil-gas suspension, can reduce the cost and difficulty of the active modification of the passive oil-gas suspension. In the driving condition of good road condition, the suspension system is passively controlled by the hydraulic actuator by stopping the control of the servo motor, so as to reduce the power consumption and achieve the purpose of energy saving.

The invention relates to the technical field of wire drawing machine tension control, and particularly discloses an adjustable tension control mechanism for a wire drawing machine, which comprises a winding device positioned in a rack, and the rack is also provided with a guide assembly and a control assembly, the guiding assembly comprises a guiding seat assembled on the rack in a sliding mode, a guiding rod assembled on the guiding seat in a sliding mode and a guiding wheel arranged on the guiding rod, the wire is wound around the winding device after being guided by the guiding wheel, and the guiding wheel can be driven to move relative to the winding device when the guiding seat and the guiding rod move so as to adjust the tension of the wire; the control assembly comprises an active control piece connected with the guide seat and used for adjusting the position of the guide seat, and a passive control piece assembled on the guide seat, connected with the guide rod and used for adjusting the position of the guide rod. The adjustable tension control mechanism for the wire drawing machine has the effect of improving the winding quality.