Abstract: Dynamic systems with moving parts, such as printers and image forming apparatuses, for example, can shake as a result of reaction forces related to carriage movement. The characteristics of the shake are related to the particular usage environment and, therefore, can be different for the same dynamic system used in different environments. When the shake of a dynamic system is characterized while the dynamic system is in its particular usage environment, the shake can be reduced, for example, based on a degree of control specified by an operator, for every use in that same environment through adjustments based on the characterization.

Abstract: Method and apparatus for altering the operation of printers and scanners to reduce vibration and/or acoustics. The technology involves altering the mode of operation of the printer or scanner to be in either “quick”, “quiet” or an intermediate mode. Additionally, means for achieving the different modes of operation are also disclosed.

Abstract: Method and apparatus for altering the operation of printers and scanners to reduce vibration and/or acoustics. The technology involves altering the mode of operation of the printer or scanner to be in either “quick”, “quiet” or an intermediate mode. Additionally, structure for achieving the different modes of operation are also disclosed.

Abstract: Dynamic systems with moving parts, such as printers and image forming apparatuses, for example, can shake as a result of reaction forces related to carriage movement. The characteristics of the shake are related to the particular usage environment and, therefore, can be different for the same dynamic system used in different environments. When the shake of a dynamic system is characterized while the dynamic system is in its particular usage environment, the shake can be reduced, for example, based on a degree of control specified by an operator, for every use in that same environment through adjustments based on the characterization.

Abstract: A method for reconstructing the original groove configuration of a phonograph record. The methodology comprises providing an instrument for measuring the entire groove of a phonograph with an instrument in communication with a computer. The computer reconstructs the original groove configuration, using data from the measurements of the record groove. Various instrument embodiments are disclosed.

Abstract: A method for reconstruction the original groove configuration of a phonograph record. The methodology comprises providing an instrument for making measurements of the geometry of a groove of a phonograph record with the instrument in communication with a computer and the computer executing a reconstructive analysis code thereby reconstruct the groove geometry of the phonograph record using data obtained from the measurements of the geometry of the groove.

Abstract: Method and apparatus for altering the operation of printers and scanners to reduce vibration and/or acoustics. The technology involves altering the mode of operation of the printer or scanner to be in either “quick”, “quiet” or an intermediate mode. Additionally, means for achieving the different modes of operation are also disclosed.

Abstract: Control system for controlling a dynamic physical system. New, substantially decoupled axes are derived from physical axes of a dynamic system. Closed-loop controllers operate on signals representing the new or synthesized axes to control the coordinate parameters. Control signals are then converted into the original physical axes to generate signals to control the original axes. A preferred embodiment is the application of the control technique to a gantry machine having three degrees of freedom. Actual coordinates are converted to one linear coordinate and one rotational coordinate. The bandwidth of controllers operating on these two coordinates are separated so that crosstalk is diminished and performance improved.

Abstract: Tele-operated machine including a moveable structure and a control device functionally connected to the moveable structure for operation by a human operator. An input processor apparatus responsive to the control device generates signals to move the moveable structure in a reduced vibration fashion. In a preferred embodiment, the tele-operated machine is a crane. The operator can cause fixed length incremental movements of a load supported by the crane to be accomplished with reduced levels of vibration after the move is completed.

Abstract: Control system for controlling a dynamic physical system. New, substantially decoupled axes are derived from physical axes of a dynamic system. Closed-loop controllers operate on signals representing the new or synthesized axes to control the coordinate parameters. Control signals are then converted into the original physical axes to generate signals to control the original axes. A preferred embodiment is the application of the control technique to a gantry machine having three degrees of freedom. Actual coordinates are converted to one linear coordinate and one rotational coordinate. The bandwidth of controllers operating on these two coordinates are separated so that crosstalk is diminished and performance improved.

Abstract: Method and apparatus for minimizing unwanted dynamics in a physical system response. Constraints on the input and on the unwanted dynamics are established, and an impulse sequence which satisfies the constraints is determined. The impulse sequence is convolved with an arbitrary command input to produce a shaped input which is used to drive physical system, thereby minimizing unwanted dynamics. The constraints on the input and on the unwanted dynamics may be selected to achieve shaped inputs and residual unwanted dynamics of various characteristics.

Abstract: The vehicle safety seat supports an occupant and includes structure interconnecting the seat and the vehicle. The interconnecting structure is adapted to constrain the seat, upon vehicle deceleration, to follow a trajectory with respect to the vehicle which substantially minimizes a cost function associated with occupant injury. In a preferred embodiment, the structure constrains the mass center and seat angle to follow trajectories which substantially minimize primarily forward motion of the occupant in the vehicle frame of reference.

Abstract: A sequence of impulses is determined which eliminates unwanted dynamics of a dynamic system. This impulse sequence is convolved with an arbitrary command input to drive the dynamic system to an output with a minimum of unwanted dynamics. The input sequence is time optimal in that it constitutes the shortest possible command input that results in no unwanted dynamics of the system subject to robustness and implementation constraints. The preshaping technique is robust under system parameter uncertainty and may be applied to both open and closed loop syThe Government has rights in this invention pursuant to Grant Number N00014-86-K-0685 awarded by the Department of the Navy.