17results about How to "Strong anti-interference ability" patented technology

The invention discloses an anti-surge control method for a combustion-driven compressor unit based on decoupling active disturbance rejection control. The anti-surge control method comprises the following steps: deducing a simplified dimensionless coordinate system; historical records of the following variables under different rotating speed working conditions are read; s100, fitting the obtained historical data under the same working condition according to a fitting formula of a stable region and an unstable region to obtain critical surge points, putting the critical surge points into the dimensionless coordinate system obtained in the step S100 through coordinate transformation, and drawing a surge line SLL; drawing a surge control line SCL according to the obtained surge line SLL; calculating the obtained distance between the surge control line SCL and the abscissa of the current operating point of the unit in the dimensionless coordinate system; designing an active disturbance rejection controller based on an error form based on the obtained distance; and designing a decoupling loop and applying the obtained active disturbance rejection controller to the decoupling loop. According to the invention, the mutual interference between anti-surge control and rotating speed control can be effectively eliminated, and the damage to the production process caused by the surge phenomenon is prevented.

The invention provides a dynamic double-closed-loop control method for a magnetic suspension energy storage flywheel rotor based on LADRC. The dynamic double-closed-loop control method is used for realizing stable suspension and dynamic control of the magnetic suspension energy storage flywheel rotor. Firstly, a mathematical model of each degree of freedom of a flywheel rotor and a linearization model of a power amplifier-electromagnet coil under a magnetic bearing coordinate system are established; then, defining an electromagnetic coupling term, a gyroscope coupling term and an unbalance term in the flywheel rotor mathematical model as external disturbance, deducing a flywheel rotor and power amplifier-electromagnet coil mathematical model for controller design, and designing a position loop second-order LADRC controller and a current loop first-order LADRC controller; and finally, setting controller parameters of a position loop and a current loop by adopting a pole assignment method. Simulation results show that the double-closed-loop control strategy can realize effective decoupling among degrees of freedom under static and high-speed suspension working conditions of the flywheel rotor, and compared with PID control, the double-closed-loop control strategy is good in dynamic characteristic and strong in anti-interference capability. The method is of great significance in guaranteeing stable and reliable operation of the magnetic suspension energy storage flywheel rotor.

The invention provides a design method of an active-disturbance-rejection permanent magnet synchronous motor position controller. The design method comprises the steps of hardware circuit design and active-disturbance-rejection controller module design. The hardware circuit design comprises an alternating current power supply module, a rectifier bridge circuit module, an inverter circuit module, a permanent magnet synchronous motor module, a voltage sampling module and a current sampling module. The design steps of the active-disturbance-rejection controller module are as follows: S1, designing a current loop PI active-disturbance-rejection controller; S2, designing a rotating speed loop PI active-disturbance-rejection controller; compared with a traditional control method, the active-disturbance-rejection permanent magnet synchronous motor position controller provided by the invention has stronger disturbance rejection, rapid dynamic response, high-precision control capability and better system robustness, and can be widely applied to industrial scenes with high performance requirements.

The invention discloses a photoelectric platform control system and method based on an extended state observer, and the method comprises the steps: transmitting a feedback signal of a photoelectric platform to a remote computer in a wireless transmission manner, and arranging a controller and the extended state observer on the remote computer, a control signal calculated by the remote computer is wirelessly transmitted to the photoelectric platform, so that the photoelectric platform is wirelessly controlled on the remote computer. According to the method, remote control of the fast reflecting mirror can be realized, a plurality of photoelectric platforms can be controlled by a single remote computer, the cost is saved, and the computing power of the remote computer is fully utilized. And the expansion state observer is used for observing disturbance errors including wireless transmission errors, so that the anti-interference capability of wireless control is improved.

The application is suitable for the field of energy storage power supply technology improvement, and provides a control circuit and method for high-speed switching of bidirectional DCDC power supply charging and discharging, which acquires the output current of the bidirectional DCDC power supply in real time through an output positive and negative current sampling detection circuit and converts the output current into a differential voltage signal; an output current detection comparison circuit compares the signal and outputs a high / low level signal corresponding to the current direction; a master control unit digital control processor DSC1 controls the power supply to switch between the discharging and charging states immediately according to the jump of the level signal. The application uses simple differential amplification and high-speed comparison circuit to realize microsecond-level fast charging and discharging state following, solves the switching delay problem caused by the dependence of the prior art on communication or voltage loop, and has the advantages of fast response speed, high reliability, low cost, and wide application scenarios.

The invention provides an autonomous attitude adjustment system and method for a suspended underwater docking platform. The autonomous attitude adjustment system comprises a buoyancy adjustment module, a power control module, a sensing module and an attitude control module, the buoyancy adjusting module is arranged on the butt joint platform, and the buoyancy adjusting module adjusts the buoyancy borne by the butt joint platform through water filling and drainage; the power control module is connected with the buoyancy adjusting module and used for controlling water filling and draining of the buoyancy adjusting module. The sensing module is used for collecting attitude data of the docking platform and adjusting data of the buoyancy adjusting module, and the attitude control module and the sensing module perform data interaction; the attitude control module controls the buoyancy adjusting module through the power control module according to data collected by the sensing module. The closed-loop feedback control system is utilized, the drainage volume of each buoyancy adjusting device arranged on the platform is changed according to the platform attitude deviation, the platform buoyancy is balanced, the optimal docking attitude is kept, and the docking task requirement of one or more aircrafts is met.

The invention discloses an unmanned mining dump truck ABS control method based on active disturbance rejection control. The method comprises the steps that a wheel speed sensor is arranged to monitor and record wheel speed data in real time; acquiring and recording the speed information of the unmanned vehicle in real time by using a vehicle inertial navigation system; converting a slip rate control target into a specific wheel speed control target by defining the slip rate; designing a linear expansion state observer, and estimating the wheel speed and the total disturbance by using the real-time driving torque and the wheel speed data; linear state error feedback control is designed, and a control law is calculated according to real-time vehicle speed, wheel speed estimation and total disturbance estimation; and the control law obtained through calculation serves as a driving torque signal and is transmitted to a throttle valve control unit of the unmanned mine car, the opening degree of a valve is changed, and ABS control is conducted on the unmanned mine car during braking. According to the method, the advantages of PID are developed by adopting an active-disturbance-rejection control method, the defects of the PID are overcome, engineering implementation is easy, robustness is achieved, and the strong anti-disturbance capability is achieved.

The present invention proposes a photovoltaic array series arc fault diagnosis method, comprising the following steps: step S1, collecting the current signal at the photovoltaic array DC bus according to a preset sampling rate to form a fault timing signal, and calculating the current signal within a preset time window X The margin factor C ; Step S2, encode the one-dimensional fault timing signal into a two-dimensional feature image to amplify the intrinsic characteristics of the arc fault and form a data set of two-dimensional feature images; Step S3, train the deep convolutional generative adversarial network DCGAN with the data set of two-dimensional feature images; The deep convolutional generative adversarial network uses the data enhancement method to expand the arc fault samples; Step S4, train the convolutional neural network classification model CNN with the data set of two-dimensional feature images and the expanded arc fault samples, and use the convolutional neural network classification model to judge the acquired suspected arc fault samples to identify whether there is an arc fault; The present invention can complete the identification of series arc faults under limited fault sample conditions.

This invention provides a high-precision anti-disturbance control method for UAV gimbals under transient impact loads, belonging to the field of precision servo control technology. It employs a cascade control architecture: the outer loop uses model predictive control (MPC) and introduces control increment constraints to plan an overshoot-free velocity trajectory; the inner loop uses linear active disturbance rejection control (LADRC) and establishes an extended state observer to estimate and compensate for the total disturbance of multi-stage transient impacts in real time. This invention, using the aforementioned high-precision anti-disturbance control method for UAV gimbals under transient impact loads, reduces the settling time to 0.18 s and lowers the maximum dynamic position error during firing to 0.0005 rad, achieving precise steady-state maintenance under high-impact environments.

The invention relates to the technical field of electronics, and discloses an electronic lock circuit of automobile charging equipment, which comprises a driving circuit, a feedback circuit, a level conversion circuit, a logic control circuit, an isolating circuit, a buck-boost capacitor charging and discharging circuit and a power-off unlocking circuit. The controller is connected to the level conversion circuit; the level conversion circuit is connected with the logic control circuit; the logic control circuit is connected with the isolation circuit; the isolating circuit is connected with the driving circuit; the driving circuit is connected with the driving port; the feedback port is connected to the feedback circuit; the feedback circuit is connected with the controller; the capacitor charging and discharging circuit is connected with the power-off unlocking circuit; the de-energizing unlocking circuit is connected with the isolating circuit; the driving circuit is connected with the driving port. According to the invention, PWM signals are used for driving and controlling, interference is resisted, and false operation is not caused; during program debugging, breakpoints are broken when locking / unlocking logic is driven, PWM has no output, and damage cannot be caused; when the charging pile auxiliary source is abnormally powered down, the capacitor charging and discharging circuit is used for unlocking; the number of the control feedback signal line is one, resource occupation is small, and design is simplified.

This invention belongs to the field of subsynchronous oscillation monitoring and control technology in power systems. It discloses a high-precision online identification method and device for subsynchronous oscillation current, comprising: generating three linearly independent observation signals through a two-stage cascaded active RC circuit with an additional FSC circuit; constructing a combined signal, midpoint parity decomposition, and second-order central difference preprocessing; constructing a residual sum of squares objective function based on frequency-sensitive circuit state information; subsequently solving for the optimal frequency parameters using an improved Nelder-Mead simplex method combining multi-initial-point grid search and sinusoidal square boundary constraint mapping; and finally calculating the amplitude coefficients of each component based on the identified frequency parameters. This invention achieves a unity of high-frequency disturbance rejection, global convergence, and strict physical boundary constraints, possessing high precision, strong robustness, and real-time performance, and is suitable for online high-precision monitoring and early warning of subsynchronous oscillations in new energy grid-connected power systems.

The utility model discloses a hardware circuit of a servo control system of an unmanned aerial vehicle, which belongs to the field of steering engine control and comprises a control module and a driving module which are stacked in a double-layer manner, and the control module comprises a main control chip, a wide-voltage power conversion circuit, a communication circuit and an interface circuit; the main control chip is respectively connected with the wide-voltage power conversion circuit, the communication circuit and the interface circuit; the driving module comprises a pre-driving chip, a three-phase inverter bridge and a current sampling circuit; the pre-drive chip is respectively connected with the three-phase inverter bridge and the current sampling circuit; the control module and the driving module are interconnected through a board-to-board connector; and the current sampling circuit is connected with the main control chip. The circuit is compact in overall size, high in integration level, high in interference immunity and wide in voltage adaptability, and suitable for precise control over the steering engine of the unmanned aerial vehicle.

The embodiment of the invention discloses a Bluetooth key distance measuring method, a positioning method, a device, equipment and a storage medium, the Bluetooth key distance measuring method is used for a Bluetooth anchor point module, and comprises the following steps: establishing a Bluetooth connection with a Bluetooth key under the condition of confirming that the Bluetooth anchor point module is in a first connection state, bluetooth signal detection is carried out on the Bluetooth connection through Bluetooth channel detection; performing calculation processing according to the detected Bluetooth signal to obtain a distance value and a multipath effect index between the Bluetooth anchor point module and the Bluetooth key; the distance value and the multipath effect index are sent to a data processing module, so that the data processing module carries out Bluetooth key positioning according to the distance value and the multipath effect index; and exiting the first connection state and sending a link transfer instruction to the next Bluetooth anchor point module, so that the Bluetooth anchor point module enters the first connection state according to the link transfer instruction, the problem of inaccurate distance measurement and positioning of the Bluetooth key can be solved, and the accuracy of distance measurement and positioning of the Bluetooth key is improved.

The application discloses a quad-rotor unmanned aerial vehicle affine formation control method and system, electronic equipment and medium, and relates to the technical field of unmanned aerial vehicle flight control. The method comprises the following steps: determining a leader, a follower and a communication topology structure diagram in a target unmanned aerial vehicle formation according to affine transformation theory; determining a symbolic Laplace matrix and an entry neighbor node set of each unmanned aerial vehicle according to the diagram; if the leader is a constant acceleration, obtaining a control force according to the matrix, the follower and the physical parameters transmitted by each unmanned aerial vehicle in the set and a first position controller; if the leader is a time-varying acceleration, obtaining the control force according to the matrix, the estimated parameter of each unmanned aerial vehicle in the set, a state observer, the physical parameters and a second position controller; obtaining a control torque according to the control force and an adaptive sliding film attitude controller; and controlling the follower by using the control force and the control torque. The application enables the unmanned aerial vehicle cluster to have stronger anti-interference ability in formation and realize more flexible formation maneuvering.

The present invention provides an automobile power signal switch circuit, comprising: a constant power input terminal, a functional power input terminal, a first diode, an RC energy storage circuit, a first resistor, a second resistor, a first switch tube, a third resistor, a second switch tube, a protection circuit, an anti-reverse connection circuit and a functional power output. The automobile power signal switch circuit of the present invention can obtain a control circuit of a stable output voltage from other constant power sources by collecting PWM signals, and has outstanding advantages in response speed and anti-interference ability, and is low in cost and convenient and reliable to implement.

The invention discloses an electronic mechanical brake caliper for braking a hub motor and a working method thereof, and belongs to the field of brake calipers, the electronic mechanical brake caliper comprises an EMB motor, a speed reducer connected with a rotor shaft of the EMB motor, and a caliper body connected with the output end of the speed reducer, the system further comprises a PCB integrated with a brake controller and a double-closed-loop control system and a full-life-cycle state sensing module, the full-life-cycle state sensing module is electrically connected with the input end of the brake controller, the output end of the brake controller is electrically connected with the double-closed-loop control system, and the double-closed-loop control system is electrically connected with the hub motor and the EMB motor. By the adoption of the electronic mechanical brake caliper for hub motor braking and the working method of the electronic mechanical brake caliper, the braking safety, the energy recovery efficiency, the response precision and the service life of parts are cooperatively improved, and the comprehensive requirement for hub motor braking is perfectly met.

The present invention discloses a portable ducted micro-sized single-rotor UAV, comprising a single propeller, a power transmission rod and a UAV shell, wherein a propeller power device, a first fixing plate, a small turbine, a turbine power device, a UAV built-in layer, a flight control box, a sensor, a battery, a second fixing plate, four air control surfaces and corresponding four control steering gears, an air circulation channel and an air inlet are installed inside the UAV shell; the single propeller is installed on the upper end of the power transmission rod, and the lower end of the power transmission rod is connected to the propeller power device; the propeller power device is installed on the first fixing plate; the small turbine is below the first fixing plate, and a turbine power device is installed below the small turbine; the UAV built-in layer separates the space below the small turbine and above the second fixing plate into two spaces inside and outside; the four air control surfaces are installed at the bottom of the UAV. The UAV has stronger portability, anti-interference and maneuverability and more reliable flight characteristics.