48 results about "Passivity controller" patented technology

A system for continuously monitoring a user's motion and for continuously providing realtime visual physical performance information to the user while the user is moving to enable the user to detect physical performance constructs that expose the user to increased risk of injury or that reduce the user's physical performance. The system includes multiple passive controllers 100A-F for measuring the user's motion, a computing device 102 for communicating with wearable display glasses 120 and the passive controllers 100A-F to provide realtime physical performance feedback to the user. The computing device 102 also transmits physical performance constructs to the wearable display glasses 120 to enable the user to determine if his or her movement can cause injury or reduce physical performance.

Separate active and passive controllers each detect a generated magnetic field. The active controller phase corrects the detected magnetic field information transmitted from the passive controller and uses that to calculate the position and orientation of the passive controller. The active controller also phase corrects its own detected magnetic field information and uses that to calculate its position and orientation. The active controller transmits each of these calculated positions and orientations to a video game system directly or indirectly through the source of the generated magnetic field. The video game system is thus informed of the position and orientation of each of the active and passive controllers. Alternatively, the active controller creates a signal matrix using the phase corrected information and the position and orientation of a controller is calculated by either the source of the generated magnetic field or the video game system using the signal matrix.

The invention discloses a dynamic radio energy transmission system and a passive control method thereof. The system comprises a ground radio energy transmitting system and a vehicle-mounted radio energy receiving system; the ground radio energy transmitting system is composed of n sets of segmented radio energy transmitting devices, and each set of radio energy transmitting device comprises a first full bridge rectifier module, an inverter module, a radio energy transmitting module, a transmitting end controller and a ground wireless communication module; the vehicle-mounted radio energy receiving system comprises a radio energy receiving module, a second full bridge rectifier module, a DC / DC module, a receiving end passive controller and a vehicle-mounted wireless communication module; aradio energy transmitting coil is arranged on a travelling road of an electric vehicle, a radio energy receiving coil is installed on the bottom surface of the electric vehicle; and the dynamic radioenergy transmission system disclosed by the invention adopts a passive control strategy and improves the dynamic properties of the system while ensuring the stability of the system, and the dynamic radio energy transmission system has good followability, rapidity and stability.

The invention discloses an improved passive control method of a three-phase grid-connected inverter based on interference observer compensation, which relates to the technical field of grid-connectedinverters, comprising the following steps: (1) sampling the grid-connected current of the inverter and the PCC point voltage, and performing abc / dq conversion; (2) calculating d-axis and q-axis command values; (3) performing d-axis and q-axis current control by a current inner-loop passive controller; (4) obtaining the output voltage compensation value of the inverter by using an interference observer; (5) performing PWM driving pulse production. In this invention, the current tracking controller of grid-connected inverter is designed based on a passive control theory, the controller has strong robustness, fast dynamic response and simple design. The disturbance observer is used to compensate the output, which effectively suppresses the influence of uncertain factors such as parameter perturbation, unmodeled error and disturbance on the steady-state / dynamic response characteristics of the system, thus improving the robustness of the controller.

The invention relates to a direct current bus voltage finite time passive control method based on hybrid energy storage. A super-capacitor and a storage battery are taken as a hybrid energy storage system. The super-capacitor and the storage battery are connected with a direct current bus in parallel through own bidirectional DC-DC converters, thereby forming an energy bidirectional loop. A voltage of the direct current bus, a voltage of the super-capacitor, a voltage of the storage battery and an output current signal of the direct current bus, as control parameters, are input in a finite time passive controller, and through operation of the controller, charge / discharge reference currents of the super-capacitor and the storage battery are generated. Reference current signals and current signals of the super-capacitor and the storage battery, as the control parameters, are input in a current adjusting device, through operation, control signals of the bidirectional DC-DC converters are generated, and the control signals are used for controlling charge / discharge of the hybrid energy storage system, thereby suppressing voltage fluctuation of the direct current bus. The voltage quality of the direct current bus is effectively improved; the voltage is enabled to be stable in finite time; and the response speed of the voltage is improved.

The invention relates to a passivity-based control method for a speed-senseless interpolating permanent magnet synchronous motor. The passivity-based control method comprises the following steps of: setting a desired motor rotational speed, establishing a non-singular high-order terminal sliding-mode observer to estimate a motor rotational speed estimated value and a motor rotor angular displacement estimated value, evaluating the difference between the desired motor rotational speed and the motor rotational speed estimated value, carrying out PI adjustment, evaluating a desired electromagnetic torque, obtaining a desired d-axis current component and a desired q-axis current component through optimal torque control, establishing a passive controller for the interpolating permanent magnet synchronous motor, based on a port controlled Hamiltonian system model, evaluating a d-axis voltage component and a q-axis voltage component, carrying out pack-1 transform on the d-axis voltage component and the q-axis voltage component to obtain an alpha-axis voltage component and a reference beta-axis voltage component, and carrying out voltage space vector pulse-width modulation on the alpha-axis voltage component and the reference beta-axis voltage component to obtain six paths of drive pulse signals. The control method enables the whole system to be provided with good steady accuracy and dynamic performance.

The invention discloses a Buck-Boost converter variable damping passive control method based on a port controlled dissipation Hamiltonian model. The method comprises the following steps of 1, according to the system state averaging model and the state variables of a Buck-Boost converter, converting the system state averaging model of the Buck-Boost converter into a port controlled dissipation Hamiltonian model form, and verifying the passivity of the port controlled dissipation Hamiltonian model form; 2, according to the port controlled dissipation Hamiltonian model of the Buck-Boost converterand an interconnection and damping distribution passive control method, giving an expected interconnection and damping matrix and carrying out passive controller design; 3, designing a second-order differential tracker according to the influence of the damping coefficient change of the given damping matrix on the system performance, and realizing the real-time change of the injection damping; 4,designing a variable-damping passive controller according to the passive controller and the second-order differential tracker, and controlling the output voltage of the Buck-Boost converter. Accordingto the invention, by means of the control method, the output voltage of the Buck-Boost converter can be quickly converged to the expected output voltage. The steady-state error of the output voltageis reduced, and the overall performance of the system is improved.

The invention relates to a passive control method for an MMC under unbalanced grid voltage, which comprises the steps of S1, respectively building an AC-side mathematical model and a DC-side mathematical model of the MMC based on the Kirchhoff law according to a topological structure of the MMC; S2, transforming the AC-side mathematical model of the MMC into an AC-side mathematical model under a dq two-phase rotating coordinate system according to a coordinate transformation theory; S3, building an EL model of the MMC under a condition that the grid voltage is unbalanced; S4, performing passivity judgment on the MMC under the balanced grid voltage, and adopting passive control on the MMC if the MMC is strictly passive; and S5, designing a positive and negative sequence passive controller for the MMC requiring passive control according to the EL model acquired in the step S3. Compared with the prior art, the passive control method has the advantages of no power fluctuation, high steadyspeed, good control effect and the like.

The invention discloses a three-phase four-bridge-arm dual-closed-loop control method based on emotional intelligence and a passivity theory. A three-phase four-bridge-arm state equation under a d-q-0 coordinate is established; an Euler-Lagrange model is established, and a passivity-based controller (PBC) is designed according to a system passivity theory; the passivity-based controller is designed to serve as a nonlinear controller; compared with a conventional PI linear controller, the passivity-based controller is more applicable to a D-STATCOM linear system; the passivity-based controller has the advantages of high control response speed and good output current waveform and can serve as a current closed-loop controller; in addition, a simplified emotional intelligent controller is adopted; a corresponding link of orbitofrontal cortex in conventional emotional control is reduced, so that the emotional controller is simplified; meanwhile, a self-learning capability which is better than conventional PI control is still kept; the stability of a direct current side voltage can be well maintained; the anti-interference capability of the system is enhanced; and due to the dual-closed-loop control method, the three-phase four-bridge-arm D-STATCOM has good, rapid and stable compensation performance at a user side of a low-voltage three-phase four-wire system power supply system.

The invention relates to a current passive control method for a dual-inertia permanent magnet synchronous motor. A dual-inertia permanent magnet synchronous motor system and a current passive controller are included; the dual-inertia permanent magnet synchronous motor system is a high-precision permanent magnet synchronous motor mathematical model built on the basis of a motor body and a load; the current passive controller is used for constructing the dual-inertia permanent magnet synchronous motor system into a port controlled Hamiltonian dissipation (PCHD) system, a current loop controller is designed through an interconnection and damping configuration passive control method, axis d and axis q current control is achieved, and the speed regulation on the permanent magnet synchronous motor is achieved. The method has the following advantages that the control system formed by the motor and the load is equivalent to the two inertial elements of the motor and the load; by means of the passive control theory, the current loop controller of the dual-inertia permanent magnet synchronous motor system is designed. Accordingly, high-precision speed regulation of the dual-inertia permanent magnet synchronous motor system is achieved, and meanwhile high robustness and antijamming capability are achieved.

The invention relates to a finite time passive control method for a Buck converter. The output voltage and inductive current of the Buck converter are taken as the control parameters of a finite time passive controller, and then the control parameters are input in the finite time passive controller; a continuous control law is generated through calculation by the finite time passive controller; the continuous control law is subjected to PWM chopping wave processing to generate constant-amplitude PWM wave; and the controllable switch tube of the Buck converter is controlled. According to the finite time passive controller, a lyapunov function with fractional power is designed, and a closed loop system configured by the lyapunov function can be stable within a finite time. By adoption of the finite time passive controller, it is ensured that the output voltage of the Buck converter can be stable within a finite time, and the convergence performance of the output voltage is improved.

The invention relates to a passive control method of MMC-SAPF based on condition of unbalanced grid voltage. The method comprises the steps: (1) adopting a positive and negative sequence separation dqcurrent detection method to flexibly select the current component to be compensated according to the capacity of APF; 2) according to the EL mathematical model under the condition of unbalanced gridvoltage of the MMC-SAPF, verifying the rigorous passivity; 3) adopting the energy storage function optimized by damping injection, designing a new passive controller which can completely decouple thecontrolled variables to the expected positive, wherein the positive and negative sequences of the controller are completely decoupled; 4) adopting APF circulating current suppression, average capacitor voltage control and capacitor voltage equalization control strategy, which are suitable for the condition of unbalanced power network voltage, to improve MMC-SAPF overall dynamic performance. The method provided by the invention is applicable to a three-wire system SAPF based on MMC under ideal and power network voltage unbalanced condition. Compared with the prior art, the present invention hasthe advantages of fast dynamic response and flexible compensation mode and is applicable to various unbalanced states of power network voltage.

The invention provides a passive quasi-PR control method for a photovoltaic grid-connected inverter under a weak power grid, and belongs to the technical field of photovoltaic grid-connected invertercontrol. The method comprises the following steps: constructing a state average model according to a weak power grid single-phase full-bridge inverter equivalent topological graph in combination withthe Kirchhoff law, and then deriving an Euler-Lagrange mathematical model of a single-phase grid-connected inverter; establishing an energy function of the inverter system, analyzing an energy relationship existing in the inverter system, and then performing passivity analysis on the system to prove passivity of the inverter system; establishing an error energy storage function of the inverter system, and determining the change rate of an error energy storage equation of the inverter system by analyzing the change rate of the error energy storage equation of the inverter system; effectively changing the change rate of the error energy storage equation of the inverter system by adding a damping strategy, and shortening the time for reducing to zero; and firsty sending the error variable inthe error energy storage function to the quasi-PR controller to be processed and then sending the processed error variable to the traditional passive controller to obtain a passive quasi-PR control strategy.

The invention discloses a passivity-based control method of a mid-point capacitor three-phase four-wire system SAPF (shunt active power filter). The method comprises steps as follows: acquiring a mathematical model of an SAPF output side in a three-phase static uvw coordinate system; obtaining a voltage component and an inductive current component at the common ground point of the SAPF output sidein a dq0 coordinate system; obtaining a harmonic current component of three-phase load current in the dq0 coordinate system; obtaining direct current side master control current and differential pressure control current; acquiring a component of reference current in the dq0 coordinate system; obtaining a switch function of an SAPF output side switch function in the dq0 coordinate system; and obtaining a switch function of the three-phase SAPF. The method has the benefits as follows: control under the power grid balance / imbalance condition can be realized without processing of positive and negative sequence components of harmonic; adjustable parameters can be reduced, the passive controller structure is simplified, the response speed is higher, the harmonic content of power current can befurther reduced, and the method has higher robustness.

The invention discloses a fuzzy passive control design method for an EMU (electric multiple units) train rectifier based on an EL model. The method comprises the following steps of establishing the ELmodel under a dq coordinate system of an EMU grid-side pulse rectifier, proving the passivity of the EMU grid-side pulse rectifier and solving a desired balance point of the rectifier according to the model, obtaining a passive control law based on the EL model according to the desired balance point and the model, online adjusting the value of injection damping with the combination of a fuzzy control principle to realize the design of a fuzzy passive controller and the application in the EMU grid-side pulse rectifier. According to the method, an energy function quickly converges to the desired energy function, the DC voltage overshoot of the EMU grid-side rectifier and the volatility are reduced, based on the traditional passive control, combined with the fuzzy control theory, the value of the injection damping is online adjusted, the self-tuning of the injection damping is realized, and the dynamic performance and robustness of the rectifier are improved.

The invention discloses a non-isolated photovoltaic inverter leakage current suppression method and system. The method comprises the steps: obtaining a power grid voltage and a power grid phase, and converting a sampling value of an inverter side current into a direct current component through coordinate transformation; using a first-order passive controller to obtain an output voltage direct current component, and acquiring a three-phase modulation wave and a zero-sequence injection component through coordinate inverse transformation; and summing a three-phase output current at an inverter side to obtain a common-mode resonance current, enabling the common-mode resonance current to be subtracted from a reference value, using a second-order time-domain passive controller for inhibiting the common-mode resonance current, and injecting an output variable passing through the second-order time-domain passive controller into a three-phase modulation wave to serve as an input variable of a carrier modulation strategy. According to the invention, the common-mode resonance current and the leakage current are successfully suppressed, outstanding steady-state and transient performance is shown, and sinusoidal waveform of the output current at the inverter side and stability of the system are realized.

The invention relates to a drying device comprising at least one main engine and at least one passive controller, and the passive controller is in communication with the main engine. The passive controller comprises at least one housing, at least one electric energy generating device and at least one passive control circuit board, the electric energy generating device is connected to the housing, and converts non-electric energy into electric energy, and supplies power to the passive control circuit board, and the passive control circuit board emits at least one wireless control signal matched with the function of the main engine and controls the main engine.

The invention provides a reactive control method and a reactive controller for a flexible direct current power transmission network. The reactive control method comprises the steps of performing control in switching from a grid-connected mode into an island mode of the flexible direct current power transmission network; and locking d and q components of a grid-side alternating current voltage before the switching from the grid-connected mode into the island mode of the flexible direct current power transmission network, and taking the locked d and q components as the reference values of the d and q components of the grid-side alternating current voltage in the island mode, and performing PI control on the grid-side alternating current voltage. According to the technical scheme provided by the invention, when the flexible direct current power transmission network is in the island mode, the reference values of the d and q components of the grid-side alternating current voltage are not artificially given; instead, the reference values of the d and q components are the d and q components of the grid-side alternating current voltage before the switching from the grid-connected mode into the island mode, so that fluctuation of the flexible direct current power transmission network is not caused.

The invention relates to an MMC-PET control method for supplying power to a passive network on the basis of power grid voltage faults. The method comprises the steps of 1) carrying out positive and negative zero sequence separation on input voltage and current for an MMC-PET input stage, and controlling the positive and negative sequences of the current, 2) verifying the strict passivity of an MMC-PET input stage converter according to an EL mathematical model of the MMC-PET input stage converter, 3) designing a passive controller and a zero sequence current PI controller for positive and negative current generated when a power grid fails, 4) adopting constant direct current voltage and reactive power control for outer loop control of the MMC-PET input stage, 5) adopting circulation suppression of the MMC-PET input stage under the condition of unbalanced power grid voltage, 6) adopting phase-shifting voltage-sharing control for the middle isolation stage of an MMC-PET, and 7) for a three-phase voltage type full-bridge inverter at the output side of the MMC-PET, adopting current decoupling control for an inner loop, adopting fixed alternating voltage control and fixed reactive powercontrol for an outer loop. The method provided by the invention has the advantages of fast dynamic response, wide application range, remarkable control effect and the like.

The invention discloses a passive controller design method used for a motor train unit rectifier. The passive controller design method comprises the following steps: establishing a mathematical model of the motor train unit side pulse rectifier, further establishing a port controlled Hamilton mathematical model with dissipation of the motor train unit side pulse rectifier, then proving the passivity of the motor train unit side pulse rectifier, determining the balance point of system stability, and finally deducing a passive controller based on the rectifier by using a passive control thought based on interconnection and damping assignment. The dissipation of system energy is quickened by injecting new damping dissipation, a new energy function reaches a minimal value at the system balance point, so that a rectifier controller based on IDA-PBC is deduced without solving a partial differential equation. A passive controller designed in the invention has relatively high static and dynamic performances, and the new thought is provided for solving a direct-current link voltage overshoot problem of the motor train unit side rectifier.

The invention relates to a passive control method for an interpolated permanent magnet synchronous motor without a speed sensor. The desired motor speed is set, and a non-singular high-order terminal sliding mode observer is established to estimate the motor speed and the angular displacement of the motor rotor. Value, obtain the difference between the expected motor speed and the estimated value of the motor speed, perform PI adjustment, obtain the expected electromagnetic torque, and obtain the expected d-axis current component and the expected q-axis current component through optimal torque control, Establish the passive controller of the interpolated permanent magnet synchronous motor based on the port-controlled Hamiltonian system model, obtain the d-axis voltage component and the q-axis voltage component, and perform park-1 transformation on the d-axis voltage component and the q-axis voltage component , the α-axis voltage component and the reference β-axis voltage component are obtained, and the α-axis voltage component and the reference β-axis voltage component are subjected to voltage space vector pulse width modulation to obtain six driving pulse signals. This control method can make the whole system have good steady-state precision and dynamic performance.

Separate active and passive controllers each detect a generated magnetic field. The active controller phase corrects the detected magnetic field information transmitted from the passive controller and uses that to calculate the position and orientation of the passive controller. The active controller also phase corrects its own detected magnetic field information and uses that to calculate its position and orientation. The active controller transmits each of these calculated positions and orientations to a video game system directly or indirectly through the source of the generated magnetic field. The video game system is thus informed of the position and orientation of each of the active and passive controllers. Alternatively, the active controller creates a signal matrix using the phase corrected information and the position and orientation of a controller is calculated by either the source of the generated magnetic field or the video game system using the signal matrix.

The invention provides an active filter current control method insensitive to load current components, and belongs to the technical field of filters. The invention aims to solve the problem that an existing active filter may contain some compensation capacitor current in output current through detection and calculation, so that the phenomenon of inaccuracy and unstable control of the active filtercan be caused. The method is characterized in that an inner ring of a series-parallel converter adopts a passive controller to design and track current, and a port controlled dissipation hamilton PCHD model is established, an inner ring passive controller is designed by adopting a virtual damping injection method; a transition process is arranged by a tracking differentiator by the outer ring according to the system bearing capacity, so that the system overshoot is reduced, the nonlinear function is adopted for performing nonlinear combination on the error, and the control precision is improved. The result shows that the dynamic static property is excellent, the robustness is relatively strong, the feasibility of the adopted mixed passive control is verified, and a new idea is provided for the control strategy.

The invention discloses a control method of an APF (active power filler) and particularly relates to an APF output current and instruction current prediction method. The method includes: instruction current and APF output current are substituted into a passive control law through one-beat prediction; a passive controller generates modulated waves through operation, and pulse signals for controlling an APF switching tube are generated after PWM (pulse width modulation); prediction of the instruction current is realized through one-order linear interpolation, and a prediction value of the APF output current at a next sampling moment is obtained by means of Kalman optimal prediction based on an APF discrete mathematical model. By prediction of the instruction current and the APF output current, intrinsic sampling delay of a digital system can be offset, and compensation performance of the active power filler is improved.

The invention discloses a passive robustness control method. The method comprises the steps of acquiring three features in a power system, wherein the three features comprises a system nonlinearity a(x), parameter uncertainty b(x), and wind speed randomness d(t); combining the three features, so as to obtain disturbance Psi(x, u, t); introducing a virtual state xn+1 to represent the disturbance Psi(x, u, t); introducing a disturbance observer, and estimating the represented disturbance in real time; and introducing a robustness passive controller, compensating the disturbance estimated in real time, and controlling output of active power and reactive power of a double-feed induction generator in the power system. The method is applied to the power system containing the double-feed induction generator. When the power system containing the double-feed induction generator is disturbed, the output of the active power and reactive power of the double-feed induction generator is adjusted based on the robustness passive control of the disturbance observer, so as to make the power system more stable.

The invention relates to a passive control system and method for a five-level NPC type inverter. The system comprises a sensor collection unit, a coordinate transformation unit, an inverter output three-phase current setting unit, a passive controller and an SPWM modulation unit, wherein the sensor collection unit is used for collecting inverter output three-phase current and power grid three-phase voltage in real time; the coordinate transformation unit is used for converting the output three-phase current and the power grid three-phase voltage into components in a coordinate system of d andq correspondingly; the inverter output three-phase current setting unit is used for setting the reference values of the components of the inverter output three-phase current on d axis and q axis; thepassive controller is connected to the coordinate transformation unit and the inverter output three-phase current setting unit and is used for outputting an SPWM modulation signal; the SPWM modulationunit is used for carrying out SPWM modulation according to the SPWM modulation signal output by the passive controller and outputting the PWM pulse signal of a switching device in the five-level NPCtype inverter. Compared with the prior art, the dynamic and static stability of the system is improved, and the inverter output current harmonics are reduced.

The invention discloses a method for realizing a passive control law of a direct-current motor based on load observation. A load torque observer is used for detecting the armature current and rotating speed of a direct-current motor on line, so that a load torque estimated value under the current working condition is obtained and fed back to a passive controller of the direct-current motor. When a load changes, the passive controller is used for ensuring that the rotating speed is stabilized at an instruction value through a pulse width modulation converter by using an interconnection and damping distribution passive control method based on a port controlled consumption Hamilton model of a direct-current motor dragging system according to a real-time load estimated by the load torque observer. Aiming at the condition that a load torque is needed in realization of the passive control law of the direct-current motor, the observer is adopted for estimating the load torque in real time, so that the cost for using a torque sensor is reduced, meanwhile, the realization difficulty of the passive control law is lowered, and a new approach is provided for the realization of a robust controller of the direct-current motor based on the passive control law.