3 results about "Angular displacement" patented technology

The invention provides an angular displacement laser interferometer calibration method and an angular displacement laser interferometer calibration device based on four standard optical axes, and belongs to the technical field of laser measurement. Four measuring light beams of a laser interferometer to be calibrated pass through a middle through hole of a four-axis hollow laser interference mirror group, and are parallelly arranged in the center position of four parallel standard measuring light beams; in a quadrilateral region formed by projection points of the four standard measuring light beams at the plane, the differences of environment interference degrees of the four standard measuring light beams and the four measuring light beams of the laser interferometer to be calibrated are very small, and the air refractive index average value of the standard measuring light beams is approximate to the air refractive index value of the measuring light beams of the laser interferometer to be calibrated.

A measuring system that relate to the measurement of relatively small one degree of freedom mechanisms, such as pivoting and rotary switches, is disclosed. In particular end effectors and a kit for assembling various end effector assemblies is disclosed, that allow for accurate measurement of torque versus angular displacement curves for various types of pivoting and rotary switches.

The invention discloses an embedded angular displacement online measurement method and device; a dial is arranged on a measured workpiece and can rotate by a corresponding angle along with the measured workpiece; a displacement sensor is arranged on the dial, and the dial rotates by a certain angle along with the rotation of the measured workpiece; a displacement sensor mounted on the dial outputs a series of pulse signals, and the magnitude of the rotation angular displacement can be calculated by carrying out noise reduction and pulse counting on the pulse signals. The device is simple in structure, convenient to install, high in testing precision and capable of achieving on-line measurement of angular displacement in a narrow space.