5results about How to "Strong anti-interference ability" patented technology

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.

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 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 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 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.