Incremental Angle Position Hinges

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  • The design of an unenergized aid to standing up and sitting down for the partially disabled
    A method based on the principle of virtual work was used to find the moment about the seat hinge at each position of the body and the chair. For an incremental movement of the mechanism, the moment about the seat hinge of any force acting on the mechanism … … the scalar product of the force and the displacement of its point of application divided by the angle (in radians) turned by …
  • Bootstrap calibration of an autocollimator, index table and sine bar ensemble for angle metrology
    Constrained by the hinge and the pusher, the sine bar makes very little travel on the surface … Since the interferometer and piezo drive are incre- mental devices, we use an alignment microscope [AM] and a target [AT] on the swing end of the sine bar to reestablish the nominal zero- angle alignment position on start-up.
  • Discrete computer control of a triple‐inverted pendulum
    indirect one to the middle hinge (bearing 2). Measurements of angles +73 - (p2 and cp2 - (a1 by high-precision potentiometers and angle cpl by an incremental angular position measurement system, and also position h and velocity 4 of the cart by a tachogenerator are used as inputs for the control …
  • Simulation Model Development for Icing Effects Flight Training
    The resulting propulsion effects were modeled as functions of angle of attack, thrust coefficient and flap deflection and included as incremental tables for the appropriate coefficients, primarily pitching moment … … using gains to convert yoke, wheel, and rudder positions to control surface positions. Elevator Hinge Moment/Stick Force One observation from the icing flight test program was that the difference in …
  • A hybrid-control approach for pendulum-car control
    … moving along a line on two rails of limited length, 2) a pendulum hinged to the car … … bit per- sonal computer, a D/A converter for control voltage output, and two incremental optical encoders interfaced … Encoder 1 is used to measure the angle of the pendulum, and encoder 2 is used to measure the position of the car.
  • Combinatorial Image Analysis
    This encoding of the angles provides a convenient way to recover all the necessary informations required to transform one image into the next image during the incremental rotation process. The second part of the process consists in a loop through the cycle of hinge angles. … the algorithm stores the map ρm(α), this allows to know directly the position of the image …
  • Incremental and Transitive Discrete Rotations
    This encoding of the angles provides a way to recover all the necessary information required to transform one image into the next image during the incremental rotation process. The second part of the process consists in a loop through the cycle of hinge angles. … the algorithm stores the map ρm(α), this allows to know directly the position of the image …
  • http://dspace.mit.edu/bitstream/handle/1721.1/54511/558876224-MIT.pdf?sequence=2
    The ball-and-socket hinges have a customized track in one half of the socket that constrains the leg of the table to a specific path and also provide a stop for the leg in the table extended position (Figure 5). At that distance, the angle of the leg and the rotation of the leg were recorded. This process was repeated over small incremental changes in distance until the path of the leg over …
  • Journal of Guidance, Control, and Dynamics > Free-Wing Unmanned Aerial Vehicle as a Microgravity Facility
    … index: z coordinate of the element indicated by the index; without index: z position coordinate of the … = angle of attack = hinge axis dihedral angle γ = incremental virtual displacement δw .
  • Passive 350 GHz Video Imaging Systems for Security Applications
    The mirror position is measured by an optical incremental encoder with an accuracy of 0.001◦. Power consumption is saved by magnetic counter bearings, and maintenance-free flexure hinges guarantee precise suspension of … The scanner of this camera prototype provides a tilting angle of ±2.5◦, corre- sponding to a …