31results about How to "Realize full decoupling" patented technology

The invention provides a drive-by-wire hydraulic brake system and brake control method for independently controlling four-wheel pressure. Four pressure control units in the system are connected with abrake main cylinder pipeline in a brake pedal mechanism through a main cylinder normally open switch electromagnetic valve, each pressure control unit is respectively composed of a normally open switch electromagnetic valve, an electronic control pressurizing unit, and a normally open linear electromagnetic valve in series sequentially; the down stream of the normally open linear electromagneticvalve is respectively with a brake wheel cylinder, pressure sensors are arranged on a pipeline where the normally open linear electromagnetic valve and the brake wheel cylinder are connected; the electromagnetic valves, the sensors and the electronic control pressurizing units are respectively in signal connection with an electronic control unit; the brake control method comprises a brake controlmethod of an effective state of electrifying and a brake control method of a failure state of outage. The four pressure control units respectively independently control the pressurization, pressure preservation or pressure reduction of the brake wheel cylinder. The drive-by-wire hydraulic brake system for independently controlling four-wheel pressure and the brake control method thereof can actively build up pressure, rapidly pressurize, accurately control pressure and has functions of failure braking and regenerative braking during vehicle braking.

The invention discloses a device for fully decoupling multiple transmitting coils in a wireless electric energy transmission system. The device wirelessly transmits the electric energy to one or morereceivers by a plurality of power transmitters. Each power transmitter is provided with a transmitting coil. The device may comprise six transmitting coils, six compensating capacitors, and seven decoupling elements, wherein the transmitting coils are arranged in a double-row array and the distances between the centers of the any two adjacent transmitting coils are the same. Or the device may comprise seven circular transmitting coils, seven compensating capacitors, six decoupling elements, wherein the six transmitting coils surround the other one transmitting coil, and the distances between the centers of the any two adjacent transmitting coils are the same. The mutual inductance among all transmitting coils can be eliminated by configuration. Further, the compensating capacitors are configured to satisfy the resonance. The device can fully decouple the multiple transmitting coils by using the decoupling components, has great significance for improving the system transmission efficiency and reducing the system control difficulty.

The invention discloses a dual-tuning fork effect-based symmetric full-decoupling dual-mass block silicon micro-gyroscope which comprises two vertical layers, wherein the upper layer is a mechanical module of a silicon micro-gyroscope, the lower layer is a glass substrate on which a signal lead is spread, the mechanical module of the micro-gyroscope is composed of two completely same sub-modules which are horizontally and symmetrically arranged, two sensitive mass blocks are connected in a driving direction and a sensitive direction respectively by driving coupling folding beams and cross beams so that the two sensitive mass blocks are mutually associated in a drive mode and a detection mode. Each sub module comprises a sensitive mass block, a drive module, a drive feedback module, detection modules, drive support beams, drive feedback support beams, detection support beams, drive decoupling beams, detection decoupling beams, detection coupling support beams and fixed anchor points. According to the dual-tuning fork effect-based symmetric full-decoupling dual-mass block silicon micro-gyroscope disclosed by the invention, the two sub modules adopt a co-frequency inverted phase drive mode, and the detection module realizes differential detection, and thus influences of outside impaction, temperature and manufacturing deficiency can be effectively inhibited, and the common-mode error resisting capability is strong.

The invention provides a wire-controlled hydraulic brake control system and its control method for automatic driving. The system includes a set of brake pedal operation modules, a set of hydraulic control modules, two sets of booster modules, and two sets of motor drive control modules. and a set of electronic control modules, the brake pedal operation module and the booster module are respectively connected to the hydraulic control module pipeline, two sets of booster modules realize redundant backup, the brake pedal operation module, booster module, motor drive control module, The hydraulic control modules are respectively connected to the electronic control module by signal, and the electronic control module is composed of two groups of electronic control sub-modules to realize redundant backup; the control method includes: the brake control method in the power-on state without failure, typical hardware failure The braking control method under the following conditions and the braking control method under the failure state of power failure. The present invention adopts a redundant architecture of multiple booster modules, multiple sensors and multiple electronic control modules to meet the requirements of high-level automatic driving for the braking control system.

The invention relates to a fully decoupled two-axis swing mechanism with symmetrical arrangement. The mechanism includes a base, a three-way cross-axis mechanism, a swing platform and a linear drive device; Axis swing action, and the angular velocity and angular displacement of the mechanism are controlled by controlling the speed and displacement of the drive rod of the linear drive device; the mechanism realizes the full decoupling of the two-axis swing motion through its own structure, and can complete front and rear pitching and left and right rolling actions , and do not interfere with each other, it can be widely used in aircraft and ship simulators for motion simulation. In addition, the mechanism has the characteristics of compact space layout, light weight, fast dynamic response and simple motion control.

The invention discloses a six-axis integrated micro-acceleration sensor and a manufacturing method thereof, comprising upper and lower cover plates and a sensing chip connected together by bonding. The sensing chip includes four beams drawn from the diagonal of the fixed outer frame and connected to the "island" in the middle, so that the "island" in the middle of the outer frame, the beams on the diagonal of the outer frame, and the outer frame form a whole— A fixed frame, each inertial sensing unit is composed of an inertial mass block, a structural support beam, and a sensitive micro-beam, each inertial mass block is trapezoidal, and the middle part of the upper bottom has a structural support beam extending to the lower bottom ; On both sides of the structural support beam, there are sensitive micro-beams connecting the upper bottom edge of the trapezoidal inertial mass block with the "island" in the middle of the fixed frame. Due to the small structure of the sensitive microbeam, the main stress will be concentrated when the sensitive chip is loaded, and it is easy to form a simple stress state of direct tension and direct compression, which is very conducive to decoupling between axes. The invention has a simple and compact structure and is easy to process.

The invention discloses a drive-by-wire hydraulic braking and steering system. The drive-by-wire hydraulic braking and steering system solves the problems that an existing drive-by-wire braking and steering system arranged independently has a large occupied area and low integration and does not facilitate integrated control, and the existing drive-by-wire braking and steering system is poor in stability when the existing system does not work in case of power failure. The drive-by-wire hydraulic braking and steering system comprises a hydraulic source part, a steering part, a braking part and an electric control part; the hydraulic source part comprises a hydraulic pump, a first one-way valve, a second one-way valve and an eighth normally closed electromagnetic valve; the steering part comprises a first normally closed electromagnetic valve and a first high speed switching valve; the braking part comprises a second high speed switching valve and a seventh normally closed electromagnetic valve; the hydraulic source part is in pipeline connection with the steering part through the eighth normally closed electromagnetic valve, the first one-way valve, the first normally closed electromagnetic valve and the first high speed switching valve; the hydraulic source part is in pipeline connection with the braking part through the hydraulic pump, the second one-way valve, the second high speed switching valve and the seventh normally closed electromagnetic valve; and the power control part is in electric wire connection with the hydraulic source part, the steering part and the braking part.

The invention discloses an integral metal spring type active vibration reduction table. The integral metal spring type active vibration reduction table comprises a bottom plate (10) and an upper panel (60). Passive vibration isolation units and active vibration isolation units are arranged at the four corners of the bottom plate (10) correspondingly. The passive vibration isolation units are used for achieving high-frequency attenuation of the vibration reduction table and each comprise a metal spring assembly, vibration isolation rubber (50) and a structural damper. The active vibration isolation units are used for achieving active control over the vibration reduction table and each comprise a feedback speed sensor, a feedforward speed sensor, a Lorentz motor and a controller. According to the vibration reduction table, the vibration reduction technique combining passive vibration isolation with active vibration reduction is adopted, high-frequency vibration can be isolated comprehensively, low-frequency vibration can be effectively restrained, and the transmission rate of low-frequency vibration is ensured; and meanwhile, high attenuation rate of high-frequency vibration is achieved, full decoupling under six-degree of freedom control can be achieved, and application is flexible.

The invention discloses a method for realizing decoupling of double-row equidistant placement multi-emission coils in a wireless electric energy transmission system. The system applicable to the method comprises N emission coils, wherein N is greater than or equal to 4 and N is an even number; all emission coils are sequentially arranged at equal intervals, wherein the mutual coupling in one emission coil unit cannot be ignored; according to the method disclosed by the invention, full decoupling in each emission coil unit can be realized by means of the arrangement of the decoupling element; in addition, the method can be expanded and popularized to the situation that a plurality of double-row emission coils are arranged at equal intervals, the applicability is high, and the method has important significance in improving the system transmission efficiency and reducing the system control difficulty.

The invention discloses a foldable adaptive landing gear for a multi-rotor UAV, which includes a lower position adjustment platform, an upper position adjustment platform, a pressure sensor, a depth camera and an IMU, wherein the lower position adjustment platform includes a lower seat that is sequentially connected by rotation , the bottom thigh bar, the bottom calf bar, the bottom thigh bar, and the bottom calf bar can rotate under the drive of the motor respectively; The sensor is installed under the lower leg bar to detect the contact force between the landing gear and the ground; the depth camera is installed under the lower seat for terrain survey; the IMU is installed above the upper seat to detect the attitude of the landing gear after landing. The foldable adaptive landing gear of the present invention has high control precision and can be folded autonomously, thereby satisfying the adaptive performance of the landing gear in various complex scenarios.

The invention provides a full-frequency disturbance decoupling method for a motion platform photoelectric tracking system, which is mainly used for decoupling target motion information and disturbance information in tracking frame gyro signals, and estimating the remaining full-frequency disturbance information after rough stabilization. Angular rate gyros A and E are respectively installed on the azimuth axis and pitch axis of the tracking frame, and the frame velocity loop adopts the gyro feedback closed loop to form a rough stability, and the model of the whole coarse stability loop is recorded as the target angular velocity as the frame rough stability loop The input and the input of its model, the difference between the output of the two is multiplied by the low-pass filter to obtain the disturbed low-frequency part d 1 (s); Multiply the gyro measurement signal by a high-pass filter to obtain the disturbance high-frequency part d 2 (s); will d 1 (s) and d 2 The addition of (s) results in the full-band disturbance after rough stabilization suppression and does not contain target motion information. The invention does not need to add additional sensors, is simple and effective, and is easy to realize engineering.

The invention discloses a composite drive-by-wire brake system and brake control method for independently controlling four-wheel pressure. Two electromechanical brake modules in the system are both electromechanical pressurizing units in signal connection with an electronic control unit, two electronic hydraulic brake modules are both connected with a brake main cylinder pipeline in a brake pedalmechanism, each electronic hydraulic brake module is composed of a normally open switch electromagnetic valve, an electronic hydraulic pressurizing unit, normally open linear electromagnetic valves and a brake wheel cylinder in series sequentially through pipelines, pressure sensors are arranged on a connecting pipeline of the brake wheel cylinder, the electromagnetic valves, the electronic hydraulic pressurizing units and the pressure sensors are all respectively in signal connection with the electronic control unit; the brake control method comprises a brake control method of an effective state of electrifying and a brake control method of a failure state of outage. The composite drive-by-wire brake system and brake control method for independently controlling four-wheel pressure can overcome the deficiency of a single line control system, can independently achieve rapid pressure buildup of four wheels and accurately control pressure, and have functions of failure braking and regenerative braking.

The invention discloses a wire-controlled hydraulic steering system. The system solves the problems of high cost caused by adding a road sensing motor, poor stability during power-off failure of the steering system and the like. The system comprises a steering wheel unit, a steering road sensing simulation unit, an electronic control unit and a steering execution unit; the steering wheel unit is connected with the steering road sensing simulation unit by a pipeline via a first oil port and a second oil port of a steering road sensing simulation main cylinder and one port of each of a first switching solenoid valve, a second switching solenoid valve, a third switching solenoid valve and a fourth switching solenoid valve; the steering road sensing simulation unit is connected with the steering execution unit by a pipeline via the other ports of the third switching solenoid valve and the fourth switching solenoid valve, one port of each of a first high-speed switching valve and a second high-speed switching valve as well as a first oil inlet and a second oil inlet of a steering power main cylinder; and the electronic control unit is connected with the steering wheel unit, the steering road sensing simulation unit and the steering execution unit by electric wires respectively.

The invention discloses a dual-mass decoupling silicon microgyroscope based on flexible connection. The dual-mass decoupling silicon microgyroscope comprises a base which is provided with an electric signal lead-out wire and a microgyroscope mechanical structural layer which is arranged on the base; the microgyroscope mechanical structural layer comprises a first substructure, a second substructure and a substructure connection device, and the first substructure is connected with the second substructure through the substructure connection device; two completely identical substructures are adopted to reduce the influence of the temperature and stress on the entire microgyroscope, the two substructures are symmetrically arranged on left and right sides, and the motion way of each substructure is linear motion in an x-y plane; by adopting the substructure connection device, the left substructure and the right substructure are integrated into a whole body, so that the consistency of the motion frequency of the two substructures can be guaranteed; moreover, the isolation of the drive motion from the detection motion can be guaranteed by adopting the substructure connection device, and the complete decoupling of the structural motion can be realized; the adoption of the substructure connection device ensures that drive parts and detection parts of the two substructure respectively make linear motion in opposite directions when the microgyroscope makes the drive motion and the detection motion.