12 results about "High acceleration" patented technology

This invention relates to the field of vibration control technology, providing an active vibration isolation control method, system, and electronic device. The method includes: determining the displacement change rate and current displacement value based on actuator displacement data; determining the motion trajectory based on load displacement data; when the motion trajectory is a preset trajectory, determining a first control signal based on the displacement change rate and a feedforward control signal; when the motion trajectory is not a preset trajectory and the displacement change rate is ≥ a preset disturbance threshold, determining the first control signal based on the displacement change rate, current PID parameters, and a preset gain control coefficient ratio; when the motion trajectory is not a preset trajectory and the displacement change rate is < the disturbance threshold, determining the first control signal based on the displacement change rate and current PID parameters; determining a second control signal based on the current displacement value and multi-level displacement thresholds; and determining an output signal to control the actuator based on the first and second control signals. This addresses the problem of insufficient vibration isolation effect of related active vibration isolation control methods under high acceleration load conditions.

This invention belongs to the field of impact resistance technology and discloses a wireless measurement method for high g-value acceleration during a collision process. The method includes installing a sensor and supporting circuitry; installing a transmitter and transmitting antenna; overload-resistant potting reinforcement of the measurement module; configuring a wireless receiving device for impact data; and performing acceleration data analysis and processing. This method, by installing a high-overload-resistant wireless transmission measurement device on an experimental model, achieves wireless measurement of acceleration data during the collision process, solving the problem of measuring high g-value acceleration data in high-speed collisions, explosions, and other events. Utilizing wireless transmission, this method eliminates the need for retrieval of measurement and recording equipment, avoiding the problem of difficulty in installing signal transmission lines on high-speed moving objects. It is particularly suitable for situations where high collision velocities generate peak accelerations of tens of thousands of g, and wired data transmission is difficult, thus possessing practical engineering value.

The utility model discloses a high precision type high acceleration testing machine with dynamic test, including host body, the host body's front end position department is installed with the test cabin door, the host body's front end is provided with the recess at the below position department, the host body's front end below position department is installed with the mesh plate, the mesh plate is inserted to the opening position department of host body front end below position department when installing this device, first the convex block is connected in the inside position department of recess when installing, make the position of mesh plate be limited, make first gear shaft rotate to rotate knob, and first gear shaft passes through the gear structure at the outside wall position department, drives the upper insertion column and lower insertion column of both sides position department, moves respectively to the above and below, makes insertion column insert to the inside position department of insertion hole, thereby completes the installation to mesh plate, through this installation, can be completed quickly when disassembling and installing, and need not borrow the tool.

The application relates to the technical field of aviation tire testing equipment, in particular to a needle-punching temperature measuring device and method for high-acceleration tire testing, which is used for testing a measured tire. During the testing process, a temperature measuring driving device drives a mounting frame to move and approach the measured tire, so that a needle-punching mechanism is moved to a position to be measured of the measured tire; a needle-punching driving mechanism drives a temperature measuring needle to move and pierce the temperature measuring needle into the measured tire from the surface of the measured tire; the temperature measuring needle collects the temperature at the position to be measured of the measured tire; the performance of the tire is tested; and the requirements of high-acceleration tire testing are met.

The invention relates to the technical field of safety protection of high-speed movement equipment, in particular to an acceleration protection method and device for prolonging an acceleration distance based on relative movement. The device comprises a power main body, a protected carrier and a controllable relative movement mechanism, the controllable relative movement mechanism is connected between the power main body and the protection carrier; wherein the controllable relative movement mechanism is used for controlling the protected carrier to generate linear relative displacement matched with the acceleration of the power main body in the opposite acceleration direction when the power main body accelerates, so that the effective acceleration distance of the protected carrier is prolonged. On the premise that the equipment size is not increased, the impact protection problem under the high acceleration working condition is physically and essentially solved.

The utility model discloses a vane clamp for high frequency high acceleration test, including a certain location clamping block, be equipped with the limiting slot for clamping vane on the location clamping block, the limiting slot is wide in, the location clamping block still is equipped with a square positioning hole, the both sides of square positioning hole form rigid support beam, the bottom of square positioning hole is equipped with center positioning hole, the location clamping block still is equipped with the counterweight of adjustable mass. This vane clamp sets up square positioning hole on the location clamping block, and the both sides of square positioning hole form rigid support beam, and the location clamping block forms a door beam structure, like this can effectively increase its inherent frequency, and simple structure, convenient design, through the additional counterweight of adjustable mass on the location clamping block, can accurately adjust the first order axial inherent frequency of clamp through the mass of counterweight adjustment, and can better satisfy the blade reliability test requirement.

The invention discloses a motor rotor structure giving consideration to permanent magnet fixing and electromagnetic performance and a design method thereof. The rotor structure comprises a rotor yoke, bionic wedge-shaped rotor teeth integrally formed on the inner circumference of the rotor yoke and permanent magnets embedded between the teeth. The tooth side surfaces of the rotor are matched with the side surfaces of the permanent magnets, so that the radial and circumferential reliable mechanical constraint of the permanent magnets is realized, and the motor performance reduction and damage caused by the movement or falling of the permanent magnets under high acceleration can still be prevented when an adhesive fails; and the inverted V-shaped groove is formed in the middle of the tooth tip part, so that interelectrode flux leakage is effectively reduced, and the output torque of the motor is improved. Based on the constraint of the maximum impact acceleration and the safety coefficient on rotor structure parameters, the optimization design problem of the geometric shape of the rotor teeth is constructed and solved, and the narrowest position of the rotor teeth is magnetically saturated at a rated working point, so that the magnetic flux leakage path magnetic resistance is greatly increased, the magnetic flux leakage is reduced, and the electromagnetic output torque of the motor is maximized. The method is suitable for aerospace and other extreme mechanical environments, and realizes the optimal collaborative design of reliable fixation of the permanent magnet and electromagnetic performance of the motor.

The application discloses a kind of steel frame snowmobile friction coefficient real-time detection device and method, to solve the technical problem that prior art cannot be in high speed, high acceleration, high impact working condition Real-time, accurate detection of the friction coefficient between tubular steel blade of steel frame snowmobile and ice surface.It includes 24V lithium battery, sensor acquisition module, industrial computer, 12V lithium battery, tail three-coordinate force sensor upper clamp, tail three-coordinate force sensor, tail three-coordinate force sensor lower clamp, head three-coordinate force sensor lower clamp, head three-coordinate force sensor, head three-coordinate force sensor upper clamp.Through the adoption of custom fixture, three-coordinate force sensor is installed on the connection node of tubular steel blade of steel frame snowmobile and vehicle body, without changing the original structure of snowmobile, realize the stable installation of sensor, adapt to high speed, high acceleration, high impact and other extreme working conditions.The device passes through the principle of mechanics transmission, three-coordinate force sensor real-time acquisition tangential stress and normal stress, and calculates friction coefficient.Data is processed, recorded and visualized by sensor acquisition module and industrial computer.Provide data support for athlete training and sliding path optimization.

The application discloses a symmetrical force balance type high-frequency impact device and belongs to the technical field of mechanical performance testing. The device comprises a base, a test piece mounting table 2 located in the middle, a first impact assembly 3 and a second impact assembly 4 symmetrically distributed on both sides and a control system. The two impact assemblies are driven by linear driving units 31, the axes are collinear and the actions are synchronous. When working, the impact hammer heads 33 on both sides simultaneously accelerate to impact the test piece towards the center or simultaneously retreat in the reverse direction. The symmetrical action makes the reaction forces generated by the impact cancel each other out in the system, greatly reducing the vibration interference on the base and the foundation. The application adopts a voice coil motor or a linear motor to drive, can realize high-frequency and high-acceleration impact loading and is especially suitable for vibration fatigue and impact life test of contact net parts, and has the advantages of compact structure, high test precision and good self stability.

FIELD: measurement technology.SUBSTANCE: linear acceleration compensating sensor is equipped with two magnetic systems, each of which is made in the form of a magnetic circuit, in the internal cavity of which a magnet is installed, connected to a concentrator and two coils, electrically connected to each other and mounted on bushings, the sensitive element is installed between covers, which are equipped with through holes, through which bushings with coils are coaxially mounted on the planar surface of the sensitive element on both sides, and both parts of the housing are equipped with seats in which magnetic systems are installed in such a way that the same poles of the magnets are located opposite each other, whereas the coils are placed in the gaps of the magnetic systems between the concentrator and the magnetic circuit, so that the coils are in the magnetic flux flowing in the gap.EFFECT: increase in the accuracy of acceleration conversion and an increase in resistance to external destabilizing factors.1 cl, 1 dwg

The utility model discloses a kind of energy storage type high acceleration testing machines, including device main body and the mobile wheel for moving being set in device main body lower side four corners, the left end of the upper side of device main body is provided with controller, the right side of the controller is provided with multiple control buttons, the lower left side of the controller is provided with pressure gauge, the lower side of the pressure gauge is provided with pressure relief hand valve, the lower side of the pressure relief hand valve is provided with water injection port, traditional plane test board makes sample bottom surface and plate contact area reach 100%, steam flow is seriously hindered, leading to that test result exists significant deviation.And the innovation structure is formed by the bulge support of rotating lever and clamping rod, so that the sample bottom only contacts with the rod, greatly reducing the contact area.During testing, steam can flow freely at the sample bottom, effectively eliminating the "contact thermal resistance" and "moisture shielding effect", so that the temperature and humidity, pressure and other parameters of the sample bottom are highly similar to the real environment in the pressure cylinder.

This utility model discloses a magnetically preloaded air-bearing module, belonging to the technical field of air-bearing modules. It includes an air-bearing guide rail, with a voice coil motor installed at the bottom of the guide rail's interior. Air-bearing sliders are symmetrically arranged at the upper end of the guide rail. An encoder body is installed at the bottom of one side of each slider, and an encoder reading head is installed at the bottom of the slider's interior corresponding to the voice coil motor. This utility model uses an embedded permanent magnet as a negative pressure source, enabling continuous and stable output of negative pressure without the need for additional negative pressure equipment, saving costs. Furthermore, the air-bearing module / platform can be made very small, saving installation space. The stable negative pressure provides stable motion control. By using a voice coil motor as the drive source, the overall size of the equipment is reduced, ensuring high speed, high acceleration, and fast response during operation, improving the quality of the air-bearing platform, ensuring operational stability, and achieving exceptionally high air-bearing flatness.