174 results about "Angular displacement" patented technology

The invention discloses a bevel gear pair backlash measuring and meshing coloring device and method.The device comprises a base, a driving gear positioning and detecting assembly, a driven gear positioning and detecting assembly and a workpiece positioning and clamping mechanism, and the driving gear positioning and detecting assembly, the driven gear positioning and detecting assembly and the workpiece positioning and clamping mechanism are arranged on the base; the device further comprises a shaft system angle displacement assembly, and the shaft system angle displacement assembly is arranged on the base and can drive the driven gear positioning detection assembly to rotate around the workpiece positioning clamping mechanism. According to the device, by arranging the shaft system angle displacement assembly, the included angle and the axial telescopic length of the driving gear positioning detection assembly and the driven gear positioning detection assembly can be adjusted so as to adapt to the included angle between the driving gear input shaft and the driven gear output shaft and the length of the input shaft and the output shaft, the structure is simple, and adaptability is high. The method provided by the invention has the advantages of simple operation, strong adaptability, high precision, high flexibility and accurate measurement result.

The invention belongs to the technical field of rolling bearing measurement, and particularly relates to a rolling bearing overturning rigidity measuring device and method, and the device comprises an upper pressing gasket, a loading device, a torque sensor, a motor, a bearing, a lower supporting gasket, a bearing supporting seat, a sensor supporting seat, a platform, a control box, a measuring meter, and a nut A; the motor, the sensor supporting seat and the bearing supporting seat are respectively fixed on the platform; the torque sensor is fixed on the sensor supporting seat, one end of the torque sensor is connected with an output shaft of the motor through a high-rigidity coupling, and the other end of the torque sensor is connected with the loading device through a flange plate and a bolt; according to the method, controllable overturning moment is accurately applied to a bearing outer ring through a high-rigidity and coaxial driving and measuring system, tiny overturning angular displacement generated by the bearing outer ring is synchronously measured, and the overturning rigidity of the bearing is obtained by calculating the slope of a moment-angular displacement relation curve.

The invention discloses a structure and method for preventing axial and angular movement of a spline pair, and particularly relates to the technical field of spline pairs.The structure comprises a spline shaft and a spline sleeve, the spline sleeve is arranged on the surface of the spline shaft in a sleeving mode, a plurality of sleeve grooves are formed in the inner wall of the spline sleeve, and a plurality of shaft teeth are fixedly connected to the surface of the spline shaft; the surface of the shaft tooth is in sliding connection with the inner wall of the sleeve groove, a positioning device for limiting the spline shaft and the spline sleeve and preventing the spline shaft and the spline sleeve from axial or angular movement is arranged between the spline shaft and the spline sleeve, the positioning device comprises a positioning pin, and a first circular groove is formed in the spline shaft. The positioning device can limit and fix the spline housing and the spline shaft, so that the spline shaft cannot move in the axial direction, the situation that the spline shaft moves in the axial direction or the angular direction due to vibration in the transmission process is reduced, and the stability of the spline shaft in the transmission process is improved.

The invention belongs to the technical field of metal plate processing and testing, and particularly discloses a device and method for testing the bending forming capacity of a metal composite plate. The device comprises a test base, a movable heating mechanism which slides and can be locked on the test base, a bending test mechanism rotationally connected to the test base, a fixed hydraulic mechanism, a first driving motor and a second driving motor, a heating element is arranged in the movable heating mechanism, so that the plates can be uniformly heated on line; the bending test mechanism controls the clamping force and the bending angle of the bearing through a servo motor in a closed-loop manner, and collects pressure and angular displacement data in real time; and the hydraulic telescopic head of the fixed hydraulic mechanism executes reverse pushing after single bending, so that a fatigue cycle test is realized. According to the invention, normal-temperature / thermal-state multi-angle bending and fatigue testing can be carried out on metal composite plates with different specifications, the forming limit and layering failure critical parameters are rapidly obtained, and the process optimization efficiency and the product reliability are improved.

The invention discloses a compact five-degree-of-freedom teleoperation hand of a series-parallel structure and a control mapping method of the compact five-degree-of-freedom teleoperation hand. The teleoperation hand comprises a base, a wire guiding device, a fixing sleeve, a rotary encoder, a driving arm, a spherical hinge butt joint device, a driven arm, a torsional spring, a movable platform, a front-end operation series connection platform and two angular displacement sensors. The rotary encoder is fixed to the wire guiding device through the fixing sleeve and used for measuring the rotation angle of the driving arm in real time. One end of the driving arm is fixedly connected with a rotor of the rotary encoder, and the other end of the driving arm is hinged with one end of the driven arm; the other end of the driven arm is hinged to the movable platform, and the two angular displacement sensors are used for measuring the pitch angle and the yaw angle of a handle of the front-end operation series platform. The front-end operation series platform is hinged to the movable platform and used for adjusting the posture of the teleoperation hand. The device is simple and compact in structure, low in cost and small in size; through combination of series connection and parallel connection, the rigidity requirement is guaranteed, and meanwhile the flexibility of the device is guaranteed.

The invention relates to a constraint-driven five-axis machining singular area tool path local deformation optimization method. In order to solve the problem that the machining quality is reduced due to the fact that a cutter shaft vector enters a singular area to cause abrupt change of rotation shaft motion, the method comprises the steps that based on an A-C double-turntable five-axis machine tool kinematics model, a singular phenomenon mechanism is revealed through a differential motion relation, and the singular area is defined as a conical area meeting the condition that a cutter shaft vector component Tk is larger than or equal to epsilon k (epsilon k = cos5 degree is approximately equal to 0.9962); identifying a cutter axis vector point set entering a singular region in a cutter path, and expanding transition points along the path to construct a sequence to be optimized; interpolating the rotation angular displacement of the sequence by adopting a B spline curve; establishing an optimization model taking a minimum angle jerk integral square norm (guaranteeing motion stability) and a minimum cutter axis vector deviation (maintaining machining precision) as double targets; and solving an optimal B spline control point through a sequential quadratic programming (SQP) algorithm under a non-singularity constraint machine tool kinematics constraint (angular velocity / acceleration limitation) and a motion continuity constraint (C2 continuity at a connection point), and generating a smooth optimized tool path avoiding a singular region. By means of the optimization method, smoothness optimization of the tool path and stability of machine tool movement are achieved, machining errors are effectively controlled, and the method is suitable for five-axis high-precision machining of complex curved surfaces in the fields of aerospace, mold manufacturing and the like.

A clamping device for releasably holding a tool holder shank includes a housing, a drawbar axially moveable in a bore in the housing, engagement members moveable under the effect of the drawbar into locking engagement with the tool holder shank, and an actuating member rotatably arranged in the bore. Upon rotation of the actuating member, a contact surface on a motion transferring element fixedly connected to the actuating member achieves an axial movement of the drawbar by pressing against a contact surface on another motion transferring element fixedly connected to the drawbar. At least one of the contact surfaces includes two sections with mutually different pitch, such that the same angular displacement of the actuating member, when rotated in a first rotary direction, results in a longer axial movement of the drawbar in a first phase of the rotary movement than in a final phase thereof.

A trolling motor assembly including a main housing and a shaft rotatably coupled therewith. The shaft is rotatable through a first angular displacement about its longitudinal axis that exceeds 360 degrees. A first gear coupled with the shaft is rotatable about the longitudinal axis. A second gear coupled with the first gear has an axis of rotation spaced apart from the longitudinal axis and is rotatable through a second angular displacement that exceeds the first angular displacement. A plurality of discs coupled with the second gear are rotatable about the axis of rotation relative to one another and to the second gear. A first disc defines a first stop that is rotatable into and out of engagement with a second stop coupled with the second gear. A second disc defines a third stop that is rotatable into and out of engagement with a fourth stop coupled with the main housing.

The utility model relates to a compound hinge corrugated pipe compensator, which comprises a protective sleeve sleeved on the periphery of a corrugated pipe, and is characterized in that the protective sleeve comprises a first shell and a second shell, the first shell and the second shell are sleeved on the periphery of the corrugated pipe, one end of the first shell is connected with an end pipe at one end of the compensator, and the other end of the first shell is connected with an end pipe at the other end of the compensator. The second shell is connected with an end pipe at the other end of the compensator, the other end of the first shell is rotationally connected into the second shell, and the outer side wall of the first shell is attached to the inner side wall of the second shell. Due to the adoption of the technical scheme, when the compound hinge corrugated pipe compensator disclosed by the utility model is used for carrying out angular displacement compensation on a pipeline, soil does not easily reach the space between the concave parts of the corrugated pipe, so that the possibility that the corrugated pipe is difficult to bend normally due to the fact that the soil is propped against the concave parts is reduced to a certain extent.

The invention discloses an impact resistance method and device for a stabilized platform based on a micromechanical gyroscope, and the method comprises the steps: recording the angle amount of the stabilized platform which is not operated due to a control bandwidth when the stabilized platform is subjected to impact or high-frequency vibration by adopting a gyroscope integration method, and continuously compensating the angle amount to a control system. The problem of pointing angle deviation caused by transient impact or high-frequency vibration can be effectively solved. The invention relates to the technical field of platform design. According to the impact resistance method and device for the stabilized platform based on the micromechanical gyroscope, the acceleration of the environment where the stabilized platform is located is calculated through a gyroscope differential method, and the acceleration is used for judging the stability of the platform environment and serves as a threshold value for starting integration of gyroscope data; a solution is given under the condition that the stable holder in a continuous tracking state is subjected to external impact, the pointing of a system can be kept stable for small-order impact, and the stable holder can still point to a target after being impacted for large-order impact.

A calibration assembly for a guided vehicle. The calibration assembly includes an orientation marker that operably engages with a first guidance apparatus of the guided vehicle. The calibration assembly also includes an imaging assembly that operably engages with and is in electrical communication with a second guidance apparatus of the guided vehicle. When the imaging assembly captures the orientation marker at a translated position for at least one cycle, the imaging assembly calibrates a rotational displacement between a first guidance direction of the first guidance apparatus and a second guidance direction of the second guidance apparatus based on an angular displacement of the orientation marker measured between a zeroed position denoting the first guidance direction and the translated position.

The invention discloses a multi-stage power transmission system with tension compensation, which comprises a mounting base, a first wheel set and a second wheel set, and further comprises a bearing piece fixedly connected to the mounting base, and an arc-shaped guide part is arranged on the bearing surface of the bearing piece; the deflection seat is fixedly connected to the axial bearing end of the first wheel set and / or the second wheel set, the deflection seat is provided with a deflection part, and the deflection part can rotate in the extending direction of the arc-shaped guide part; the adjusting assembly is used for applying an actuating force between the deflection seat and the bearing piece, and the actuating force drives the deflection part to rotate around the arc-shaped guide part and generate relative angular displacement; the adjusting assembly drives the deflection base to deflect to a preset angle and is fixed to the bearing piece. By the adoption of the scheme, the belt wheel shaft is in the preset correction state all the time in actual operation, then uneven radial loads caused by superposition of multi-stage tensioning force can be eliminated, and the accumulative effect of the offset of the belt wheel shaft is restrained from the source.

The present application discloses a downhole WOB and torque measurement method and system, which relates to the field of drilling measurement. The method sets vibration measurement sensors at both ends of the drill collar; during the drilling process, the axial acceleration and tangential acceleration of the two ends of the drill collar are measured in real time by the vibration measurement sensors; the axial relative displacement between the two end sections of the drill collar is calculated based on the axial acceleration at both ends of the drill collar; the relative angular displacement between the two end sections of the drill collar is calculated based on the tangential acceleration at both ends of the drill collar; based on the axial relative displacement between the two end sections of the drill collar, the WOB experienced by the drill collar is obtained by using the relationship between WOB and axial relative displacement; based on the relative angular displacement between the two end sections of the drill collar, the torque experienced by the drill collar is obtained by using the relationship between torque and relative angular displacement. The present application proposes a new WOB and torque measurement method, which is simple to operate, has strong anti-interference performance, and can improve the measurement stability and adaptability of downhole WOB and torque.

The invention provides a magnetoelectric angular displacement sensor, and belongs to the technical field of design of steering engine system sensors for airborne missiles. The sensor comprises a rotating shaft connected to an output shaft of the steering engine through threads, a magnet pressed at the rear end of the rotating shaft, a front shell fixed to a shell of the steering engine, a control panel assembly pasted to the front shell, a rear end cover fixed to the front shell and heat insulation cotton arranged between the rear end cover and the control panel assembly, one end of the front shell is provided with a cavity used for containing the rear end of the rotating shaft, the control panel assembly is used for detecting the magnetic force of the magnet, and the distance between the control panel assembly and the magnet is not larger than 0.5 mm. The sensor is high in precision, small in size, strong in anti-interference capability, good in environmental adaptability and long in service life.

The utility model discloses a lifting measuring device for a flow channel flashboard, and belongs to the technical field of flow channel flashboard lifting control. Comprising a rotary encoder which is installed on a rotating shaft of a fluid channel flashboard lifting motor; the pulse distributor is connected with the rotary encoder; the first opening display meter is connected with the pulse distributor, and the first opening display meter is located in the central control room; the second opening display meter is connected with the pulse distributor, and the second opening display meter is located on the local control box; the power supply is connected with the pulse distributor. The technical scheme has the beneficial effects that the angular displacement and the acceleration of the motor rotating shaft are measured by adopting the rotary encoder, so that the ascending and descending heights and speeds of the liquid flow channel flashboard are indirectly measured, and the device has the advantages of high precision, simplicity and convenience in installation and low installation cost.

The present application discloses a motor rotation angle control method, device and system. First, according to a preset second-order derivative function of jerkiness, the target angular displacement of each angular displacement control period is configured. Then, with the angular displacement control period as a period, the rotation angle of the target motor is periodically controlled according to each target angular displacement until the actual angular displacement of the target motor reaches the preset target angle. The second-order derivative function of jerkiness is a piecewise step function, so it can be integrated over its domain to obtain a first-order derivative function of jerkiness without a mutation point, and then integrated to obtain a smooth jerkiness curve. Integrating the smooth jerkiness curve can obtain a smooth acceleration curve. Since there is no acceleration mutation, a smoother angular displacement curve can be determined using a smooth acceleration curve compared to a piecewise step acceleration curve, thereby reducing the degree of impact during the motor rotation process.

A tensioner for a belt is provided, the tensioner having an independently adjustable force that presses a pulley into the belt and provides a damping effect for the tensioner. A tensioner includes a base bracket secured to, for example, an engine block, an arm rotatably engaged with the base bracket, and a pulley rotatably engaged with the arm. A biasing member, such as a spring, is positioned between the arm and the base bracket, and the biasing member generates a torsional force in response to angular displacement, where the torsional force presses the pulley into the belt. The biasing member then generates an axial force in response to the axial displacement, where the axial force presses the arm into a damping bushing unit to generate a damping effect. Thus, these forces are independently adjustable, and the arrangement of the components also reduces the tilt between the arm and the base bracket.

The watch movement includes a mechanical resonator, formed by a balance wheel and a balance spring (6), a device for adjusting the oscillation frequency of the mechanical resonator, and means for setting the mechanical resonator to its reference point. A movable part (16) of the adjusting device includes means for securing an outer end portion (8) of the balance spring and means for defining the active length of the balance spring. Means for varying the active length of the balance spring include a first toothed wheel (22), carried by the movable part, and a first set of teeth (10), arranged along the outer end portion of the balance spring, with which the first toothed wheel meshes. The securing means hold the outer end portion by friction so as to allow the first toothed wheel to drive this outer end portion via the first set of teeth and thus vary the active length of the balance spring.The first toothed wheel is in mesh relationship with a second toothed wheel, fixed to the support of the resonator, so that when the outer end part undergoes an angular displacement in a selected direction relative to the moving part, this moving part is simultaneously displaced angularly by a corresponding angular distance in the opposite direction.

The invention relates to the technical field of mechanical equipment monitoring, in particular to a rotary machinery gear transmission system kinetic parameter identification method, which comprises the following steps: step 1, based on a gear dynamics theory, considering meshing rigidity and meshing damping of a time-varying gear pair, and establishing a transmission chain torsional vibration kinetic model of rotary machinery; step 2, based on the transmission chain dynamic model established in the step 1, respectively establishing parameter identification objective functions of rotational inertia and meshing rigidity; 3, data of angular displacement, angular acceleration and torque of the transmission chain are continuously collected, and data preprocessing is completed; 4, reconstructing a target function of rotational inertia under the reference of the rotor coordinates, and solving the rotational inertia; step 5, based on the rotational inertia identified in the step 4, solving a meshing stiffness objective function; according to the method, the problem that the stability and the reliability of the gear transmission system cannot be accurately predicted by an existing identification method is solved.

The invention discloses a method and a device for measuring the motion idle stroke and the overall flexibility of a flapping-wing aircraft mechanism, and relates to the field of miniature aircrafts, and the method comprises the steps: loading an aircraft wing rod on a high-speed camera measurement platform, and recording an image of the wing rod in a motion period; after the recorded image is optimized and denoised, an optical flow method is used for capturing a moving wing rod, a sub-pixel edge detection method is used for recognizing a gray level image of wing rod movement, then the edge is optimized and corrected based on the geometrical characteristics of the wing rod, and edge calibration is carried out on the gray level image of wing rod movement; then, the angular displacement of the wing rod is recognized according to the wing rod motion gray level image after coordinate calibration is completed, meanwhile, the distribution load of the wing rod is reconstructed, and inversion is conducted on the bending moment of the wing rod through recognized coordinate information and a Tikhonov regularization method; and finally, drawing an angular displacement-bending moment curve graph of the wing rod and extracting the idle stroke and the overall flexibility of the aircraft. According to the method, the motion idle stroke and the overall flexibility of the mechanism on the flapping-wing air vehicle are effectively extracted with high precision, and the method has great guiding significance in design, test and function research of the flapping-wing air vehicle.

The utility model relates to an O-shaped sealing ring, and belongs to the technical field of sealing washs.The O-shaped sealing ring is provided with an annular base body with the rectangular section, annular grooves are formed in the front end face and the rear end face of the base body respectively, the section of each groove is in the shape of a trapezoid with a narrow opening and a wide bottom, and a plurality of connecting plates are evenly distributed in each groove at intervals; one end of the connecting plate is fixedly connected with one side face of the groove, and the other end of the connecting plate is fixedly connected with the other side face of the groove. According to the O-shaped sealing ring with the good sealing effect, the good sealing effect can be provided under the condition of vibration or angular displacement of the front sealing contact face and the rear sealing contact face.

The invention discloses a high-precision plane mirror pose precision adjusting device, which comprises a base, an orientation adjusting mechanism, a pitching adjusting mechanism, a mirror chamber and a three-point gap eliminating mechanism, and is characterized in that each of the orientation adjusting mechanism and the pitching adjusting mechanism comprises a driving assembly and a linear sliding block; the linear sliding block is connected with the execution component through the three-point type gap eliminating mechanism, and the three-point type gap eliminating mechanism comprises an adapter, a fisheye bearing connecting lead screw, a plug screw, a locking nut and an adjusting gasket and is used for eliminating radial and axial gaps at the connecting position at the same time. According to the invention, the high-performance transmission chain is combined with the three-point gap elimination mechanism, and the standard plane mirror is used as an optical function carrier of the system, so that the micro-arc-level angular displacement adjustment precision is realized. Theoretical calculation verifies that the azimuth adjustment resolution and the pitching adjustment resolution are both superior to 0.5 mu rad. The device has the excellent characteristics of gapless transmission, motion decoupling, micro-vibration resistance, long-term stable work and the like.

The utility model discloses an impact-resistant shock-resistant angular displacement sensor, which comprises a body and further comprises a buffer assembly which is arranged on the body and used for buffering impact and shock in the using process, and the buffer assembly comprises a buffer ring which is arranged on one side, close to a mounting end face, of the body. A plurality of buffer rods are fixedly connected to the side, close to the mounting end face of the body, of the buffer ring, a buffer plate is fixedly connected to the end, located in the buffer pipe, of each buffer rod, and the side wall of each buffer rod is sleeved with a first spring. According to the utility model, through the arrangement of the buffer assembly, under the action of the damping assembly and under the action of two layers of buffer protection, the impact and vibration of the body in the use process are buffered and protected, so that the impact resistance and vibration resistance of the body are improved, and the measurement precision and the service life of the angular displacement sensor are further ensured.

The present invention discloses a method for describing the full-body posture of a humanoid robot. Aiming at the problem that it is difficult to accurately describe the full-body posture of a humanoid robot with large-inertia limbs due to the difficult-to-describe trunk posture, the method regards the set of the centers of mass of each rigid body of the robot as a point cloud, and takes the mass of each rigid body as a weight, and calculates the rotation of the mass part of the robot through a point cloud rotation algorithm. Then, according to the relationship between the inertia tensor and the moment of inertia, the rotation of the inertia tensor part of the robot is calculated through a Riemannian gradient descent algorithm. Finally, an angular displacement algorithm is proposed based on point cloud rotation and rotation matrix averaging, realizing the decoupling of the rotation of the mass part and the rotation of the inertia tensor part of the humanoid robot. By using the method of the present invention, high-dynamic motions such as jumping, running, and backflips can be realized on a real humanoid robot.

The invention relates to a meat block enzyme powder uniform spraying device which mainly comprises a reciprocating motion rack, an enzyme powder storage hopper borne on the reciprocating motion rack, a discharging part, a flow adjusting part and an end restraining part. The flow adjusting part is configured to sense inertia force and generate angular displacement relative to the rack through a movable adjusting piece with an eccentric mass center when the rack generates acceleration, so that the geometric coincidence area of the discharging port and the discharging port is dynamically adjusted, and self-adaptive dynamic coupling of the discharging flow and the running speed of the rack is achieved. The movable adjusting piece is provided with a constant-speed opening position and a swing locking position, and when the rack is located at the stopping position of the end of the running path, the end restraining piece is in limiting fit with a pressed part on the movable adjusting piece, the movable adjusting piece is forcibly driven to be kept at the locking position, and the gravity falling path of the movable adjusting piece is blocked. The phenomenon of powder accumulation in the acceleration and deceleration stages is avoided, the problem of enzyme powder leakage in the shutdown intermittent period is solved, and the uniformity of enzyme powder spreading and the process stability are improved.

The invention discloses a method for quantitatively judging the operation stability of a dynamic derivative test vibration mechanism, relates to the technical field of fault prediction, and aims to solve the problem that no unified judgment index exists for judging whether a test mechanism has a fault or not in an existing high-speed wind tunnel dynamic derivative test. According to the method, a normalization idea is adopted, firstly, angular displacement voltage value data is subjected to normalization processing, and angular displacement voltage value data scales under different mechanisms or different working conditions are unified; then, calculating a single-cycle residual sum of squares between the sine curve and a standard sine curve; and finally, judging whether the mechanism breaks down or not by evaluating whether the residual sum of squares of a single period exceeds an interpretation index or not and whether the angular displacement amplitude is out of tolerance or not. The invention provides important support for improving the equipment performance, prolonging the service life and ensuring the safety in the aerospace field.

The invention provides a part continuous self-adaptive detection method and device, a medium and a product. The method comprises the following steps that a to-be-detected part is driven to rotate along with a transparent rotating disc at a preset initial angular speed; determining a first reference rotation time delay and a second reference rotation time delay respectively by combining the angular displacement and the initial rotation angular velocity of the sensing position on the transparent rotating disc and the upper and lower surface imaging positions; when the part rotates and passes through the sensing position, the double timers are synchronously started; acquiring correction parameters in real time in the rotation process to correct the two reference time delays to obtain corresponding correction time delays; when the timers reach the correction time delays respectively, images of the upper surface and the lower surface of the part are collected in sequence; and combining the upper surface image and the lower surface image, processing by a preset analysis method, and generating a detection result. According to the method, self-adaptive correction at the imaging moment can be achieved in the continuous rotation process of the part, the influence of rotating speed fluctuation and mechanical errors on synchronous imaging is eliminated, it is guaranteed that the image position is accurate, the quality is stable, and the detection precision and reliability are improved.

The present invention provides a CFD-6DOF strong coupling numerical calculation method for the transient self-flow process of a vane pump, including: S1: establishing a hydrodynamic geometric model file; S2: performing discretization processing and mesh division; S3: coupling the hydrodynamic control equation and the six-degree-of-freedom motion equation; S4: setting the initial boundary conditions and the inherent physical properties of the rotor rigid body structure; S5: calculating the torque generated by each grid node on the rotor structure wall surface; S6: calculating the angular velocity generated by the rotor at the time step of S5 to obtain the angular displacement; S7: updating the positions of each grid node in the rotating domain and correcting the flux field; S8: solving the flow field at the next time step of the system, iteratively correcting the flow field, and returning to S5 to perform cyclic calculations for each time step until the calculations for all time steps are completed and the results are output; S9: differentiating the angular displacements calculated for each time step. The present invention can obtain the transient evolution law of the flow field during the self-flow process of the pump, making the numerical analysis results closer to the actual engineering requirements.

The invention discloses a device and method for measuring the rotational inertia of a rigid body through a high-precision self-adaptive torsional pendulum method, and belongs to the technical field of rigid body mechanical parameter measurement. The self-adaptive clamping module comprises a U-shaped frame, a bearing table and a suspension rod, and the U-shaped frame is installed above the base and the damping unit; the first end of the suspension rod is connected with the bearing table, and the second end is rotatably connected with the U-shaped frame; the torsional pendulum driving module is positioned in the opening of the U-shaped frame; the power output end of the torsional pendulum driving module is in transmission connection with the suspension rod; the dual-sensing measurement system comprises a fiber grating angular displacement sensor and an MEMS acceleration sensor, and the fiber grating angular displacement sensor is installed in the middle of the suspension rod; the MEMS acceleration sensor is mounted on the base and the damping unit; and the intelligent data processing module is electrically connected with the fiber grating angular displacement sensor and the MEMS acceleration sensor. The device is adaptive to rigid bodies with different masses and shapes, and one-key calibration and rapid high-precision measurement can be realized.

The present application relates to a kind of infrared equipment with rotary eccentricity compensation device, belong to infrared equipment technical field, solve the single function of multiple buttons of infrared equipment in prior art, lead to the problem of inconvenient operation.The present application includes: lens assembly, encoder, eccentricity compensation device, driving device, circuit mainboard and infrared module;Eccentricity compensation device can output linear displacement and rotational angular displacement;Circuit mainboard is as the controller of infrared module and driving device;Encoder is used to monitor the size of the rotational angular displacement output by the eccentricity compensation device;Encoder is connected with circuit mainboard, and then can control driving device by the circuit mainboard;The driving device is used to adjust the lens spacing of the lens assembly;When eccentricity compensation device outputs linear displacement, the button of the circuit mainboard can be triggered.The present application realizes multiple functions by a button, simplifies structure, and is easy to operate.