32results about How to "Achieve mechanical decoupling" patented technology

The invention discloses a fully decoupled three-degree-of-freedom micro-mechanical gyroscope, which improves the mechanical decoupling performance of the micro-mechanical gyroscope. The micromechanical gyroscope structure of the present invention includes a single-degree-of-freedom driving mode and a complete two-degree-of-freedom sensitive mode, and is respectively connected to the driving frame and the detection frame through the decoupling mass block, and simultaneously realizes the mechanical solution of the driving mode and the sensitive mode coupling and energy conversion. The complete two-degree-of-freedom structure can increase the stable bandwidth of sensitive modes and improve the stability and anti-interference ability of the gyro system. The invention has the advantages of mechanical decoupling, good stability and anti-interference, and works under normal pressure, which is beneficial to actual processing and application.

The invention relates to the technical field of auto parts testing, and discloses a rubber bushing test system, which includes a loading seat, a warping seat and a twisting seat; the loading seat is provided with accommodating holes for press-fitting rubber bushings, and the loading seat is covered by It is configured to be able to apply a radial load to the rubber bushing; the warping seat includes a connecting rod, which is used to pass through the inner hole of the rubber bushing to fix the rubber bushing on the warping seat, and the warping seat can be wound vertically The direction of the axis of the connecting rod rotates, and the warping seat is configured to apply a warping load to the rubber bushing; the warping seat is rotatably connected to the torsion seat, and the torsion seat can rotate around the axis of the connecting rod, and the torsion seat is configured to apply a warping load to the rubber bushing. The sleeve applies a torsional load. The rubber bushing test system achieves mechanical decoupling, and can apply three dynamic loads of radial, torsional and warping to the rubber bushing at the same time. The installation and connection method of the rubber bushing is consistent with that of the real vehicle, which can truly simulate the rubber bushing. The actual working condition of the sleeve is used to accurately test the rubber bushing.

Tyre tread band (1) having a tread surface (10) to come into contact with the road surface, this tread band comprising at least two wearing layers (C1, C2, C3) which are superposed in the thickness of the tread, this tread band (1) having a first wearing layer (C1) formed by a plurality of raised elements (21, 22) each comprising a contact surface, this first layer comprising at least grooves (20, 20′) of circumferential overall orientation, this first layer being intended to be in contact with the road surface when the tread is new, and at least one other wearing layer (C2, C3) coming into contact with the road surface after the first layer (C1) has entirely worn away, each other wearing layer comprising at least one channel (30) extending in the circumferential overall direction, each channel (30) opening onto the tread surface as soon as the said wearing layer is reached after the wearing layer that proceeds it has completely worn away, this tread band being such that each wearing layer (C2, C3), distinct from the first wearing layer (C1), comprises a plurality of transverse incisions (31) distributed in the circumferential direction, each transverse incision extending from a channel (30) of the layer in question in a direction which is not circumferential so as to open fully or partially into at least one other circumferentially oriented channel or groove, and do so irrespective of the level of wear of the said other wearing layer.

The invention provides a micro-electromechanical two-axis gyroscope, the driving structure includes a driving mass and a driving electrode, and the driving mass and the driving electrode constitute a driving capacitor; the driving capacitor is used to drive the driving mass to reciprocate in a specific direction Vibration; each detection structure includes a detection mass and a detection electrode, and the detection mass and the detection electrode constitute a detection capacitance; the detection capacitance is used to detect the Coriolis force generated on the drive mass to drive the detection mass around the first axis or the second axis Capacitance change due to motion. Since the direction of reciprocating vibration of the driving mass is different from the direction of motion of the detection mass, that is, the direction of movement around the first axis and the second axis, therefore, in the case of no angular velocity input, that is, no Coriolis force, the driving mass does not It will drive the movement of the detection mass, so that the mechanical decoupling of the driving structure and the detection structure in the driving mode can be realized, thereby reducing the output quadrature error of the gyroscope and improving the output accuracy of the gyroscope.

A plane parallel connection three-dimensional force sensor mainly comprises a fixed ring, a force measuring ring, six force measuring branches and a cover plate, wherein three groups of symmetric triangular notch grooves are uniformly distributed in the outer annular surface of the fixed ring; an included angle formed by the bottom extension surfaces of two notch grooves is 120 degrees; stepped through holes are formed in the bottoms of each group of triangular notch grooves, the center lines of the stepped through holes are perpendicular to the bottoms of the triangular notch grooves, an opening in the other end of each stepped through hole is formed in the triangular notch groove in the inner annular surface of the fixed ring, three groups of isosceles-trapezoid-like notch grooves corresponding to the outer annular surface are formed in the inner annular surface, the annular force measuring ring is arranged in the inner annular surface of the fixed ring, three trapezoid bosses corresponding to the three groups of triangular notch grooves in the inner annular surface of the fixed ring are arranged on the outer annular surface, and a cylindrical slotted hole is formed in each of two lateral surfaces of each trapezoid boss; the force measuring branches are arranged in the stepped through holes of the fixed ring and the corresponding cylindrical slotted holes of the force measuring ring, and two force measuring branches of each group are symmetrically arranged; the cover plate is arranged on the end face of the fixed ring. The plane parallel connection three-dimensional force sensor is simple in structure, convenient to assemble and debug, small in multi-dimensional coupling and high in measuring accuracy, and can synchronously measure the radial force and friction torque of a bearing on line.

A mechanical decoupling heavy load parallel six-dimension force measuring platform comprises a loading plate, a force measuring plate, an upper cover plate, a bottom frame and more than 12 decoupling force measuring supporting chains. The upper end of the bottom frame is covered with the upper cover plate, a box body is formed, a lower plate of the loading plate is fixed at the plane center of the force measuring plate, an upper plate of the loading plate extends out of an opening in the upper cover plate, the force measuring plate, the upper cover plate and the bottom frame are connected through the decoupling force measuring supporting chains which are distributed on the six faces of the force measuring plate and are fixed on the upper face, the lower face and the four side faces of the force measuring plate respectively, one end of a pressing head A in each decoupling force measuring supporting chain is fixed on the force measuring plate, one end of a pulling pressing force sensor is fixed on the bottom frame and the upper cover plate respectively, the other end of the pulling pressing force sensor and one end of a pressing head B are fixed, the other end of the pressing head A and the other end of the pressing head B are both concave faces, and a steel ball is embedded between the two concave faces. The mechanical decoupling heavy load parallel six-dimension force measuring platform is simple in structure, mechanical decoupling is achieved through the steel ball, dimension-between coupling is small, measuring accuracy is high, and the mechanical decoupling heavy load parallel six-dimension force measuring platform is very suitable for heavy load large-tonnage measuring.

The invention discloses a force / position hybrid control-based tractor driving robot and belongs to the tractor automatic driving device technical field. The robot comprises a base, an accelerator mechanical leg, a brake mechanical leg, a clutch mechanical leg, a gear shifting mechanical hand and a steering mechanical hand. The tractor driving robot of the invention can be nondestructively installed on tractors of various kinds of models. According to the force / position hybrid control-based tractor driving robot, a force / position hybrid control method is adopted to control the gear shift levers, accelerator pedals, clutch pedals, brake pedals and steering wheels of the tractors. The force / position hybrid control-based tractor driving robot can replace a driver to complete driving operation on the tractors.