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  2. Proportional–integral–derivative controller - Wikipedia

    en.wikipedia.org/wiki/Proportional–integral...

    Pressure control provided only a proportional control that, if the control gain was too high, would become unstable and go into overshoot with considerable instability of depth-holding. The pendulum added what is now known as derivative control, which damped the oscillations by detecting the torpedo dive/climb angle and thereby the rate-of ...

  3. Pointing device - Wikipedia

    en.wikipedia.org/wiki/Pointing_device

    position control vs. rate control; A position-control input device (e.g., mouse, finger on touch screen) directly changes the absolute or relative position of the on-screen pointer. A rate-control input device (e.g., trackpoint, joystick) changes the speed and direction of the movement of the on-screen pointer. translation vs. rotation

  4. C0 and C1 control codes - Wikipedia

    en.wikipedia.org/wiki/C0_and_C1_control_codes

    In 1973, ECMA-35 and ISO 2022 [18] attempted to define a method so an 8-bit "extended ASCII" code could be converted to a corresponding 7-bit code, and vice versa. [19] In a 7-bit environment, the Shift Out would change the meaning of the 96 bytes 0x20 through 0x7F [a] [21] (i.e. all but the C0 control codes), to be the characters that an 8-bit environment would print if it used the same code ...

  5. Geometric dimensioning and tolerancing - Wikipedia

    en.wikipedia.org/wiki/Geometric_dimensioning_and...

    Example of true position geometric control defined by basic dimensions and datum features. Geometric dimensioning and tolerancing (GD&T) is a system for defining and communicating engineering tolerances via a symbolic language on engineering drawings and computer-generated 3D models that describes a physical object's nominal geometry and the permissible variation thereof.

  6. Rotary encoder - Wikipedia

    en.wikipedia.org/wiki/Rotary_encoder

    A rotary encoder, also called a shaft encoder, is an electro-mechanical device that converts the angular position or motion of a shaft or axle to analog or digital output signals. [1] There are two main types of rotary encoder: absolute and incremental. The output of an absolute encoder indicates the current shaft position, making it an angle ...

  7. Force control - Wikipedia

    en.wikipedia.org/wiki/Force_control

    The offset value is the input variable for the inner position control loop. Block diagram of parallel force/position control with specification of force and position (). Analogous to an inner position control, an inner velocity control can also take place, which has a higher dynamic. [12]

  8. Servomotor - Wikipedia

    en.wikipedia.org/wiki/Servomotor

    A servomotor is a closed-loop servomechanism that uses position feedback (either linear or rotational position) to control its motion and final position. The input to its control is a signal (either analog or digital) representing the desired position of the output shaft. The motor is paired with some type of position encoder to provide ...

  9. Resolver (electrical) - Wikipedia

    en.wikipedia.org/wiki/Resolver_(electrical)

    Many of the aerospace applications are used to determine the position of an actuator or torque motor position. Control systems tend to use higher frequencies (5 kHz). Other types of resolver include: Receiver resolvers These resolvers are used in the opposite way to transmitter resolvers (the type described above).