Abstract: A method of constructing an object includes depositing a first material in a predetermined arrangement to form a structure. The method further includes depositing a second material within the structure. The second material may have electrical properties and the method also includes providing electrical access to the second material to enable observation of the one or more electrical properties.

Abstract: A system and method of controlling a compressor rack having a plurality of variable capacity components is provided. A variable capacity component is selected from the plurality of variable capacity components as a designated variable capacity component. The designated variable capacity component is operated by varying a capacity of the designated variable capacity component. Each variable capacity component of the plurality of variable capacity components, except for the designated variable capacity component, is operated at a fixed capacity corresponding to one of a maximum and a minimum capacity of the variable capacity component.

Abstract: A controller and method for control of a refrigeration system having a compressor rack operable at a plurality of capacities may include determining a rate of change in suction pressure for a first capacity, determining a rate of change in suction pressure associated with a second capacity, and determining which of the first capacity and the second capacity will produce the least variation between a measured suction pressure and a desired suction pressure based on the rate of change in suction pressure associated with each.

Abstract: A system and method of controlling components of a refrigeration system includes determining a desired rate of change of a refrigeration system operating parameter, using historical data to predict an expected rate of change of the operating parameter for cycling each component, calculating an appropriateness factor for each component corresponding to a difference between the expected rate of change for the component and the desired rate of change, ranking the components based on the appropriateness factor, and selectively cycling at least one component based on the ranking.

Abstract: A system and method of controlling a compressor rack having a plurality of variable capacity components is provided. A variable capacity component is selected from the plurality of variable capacity components as a designated variable capacity component. The designated variable capacity component is operated by varying a capacity of the designated variable capacity component. Each variable capacity component of the plurality of variable capacity components, except for the designated variable capacity component, is operated at a fixed capacity corresponding to one of a maximum and a minimum capacity of the variable capacity component.

Abstract: A controller and method for control of a refrigeration system having a compressor rack operable at a plurality of capacities may include determining a rate of change in suction pressure for a first capacity, determining a rate of change in suction pressure associated with a second capacity, and determining which of the first capacity and the second capacity will produce the least variation between a measured suction pressure and a desired suction pressure based on the rate of change in suction pressure associated with each.

Abstract: A system and method of controlling components of a refrigeration system includes determining a desired rate of change of a refrigeration system operating parameter, using historical data to predict an expected rate of change of the operating parameter for cycling each component, calculating an appropriateness factor for each component corresponding to a difference between the expected rate of change for the component and the desired rate of change, ranking the components based on the appropriateness factor, and selectively cycling at least one component based on the ranking.

Abstract: A carriage drive belt for an inkjet printer includes an elongated belt section and compliant belt section secured to the elongated belt section. The elongated belt section has a longitudinal axis and includes a first portion and a second portion spaced from the first portion along the longitudinal axis. The compliant belt section extends between the first portion and the second portion of the elongated belt section and has an axis extending in a direction of the longitudinal axis of the elongated belt section.

Abstract: A direct current motor for use in a closed-loop control system is disclosed that includes a rotating commutator having a plurality of slots, a plurality of windings, the number of windings that conduct current corresponding to one less than the number of slots of the commutator, and a plurality of brushes that are configured so that application of a direct current voltage across the brushes results in a current flow in at least one of the windings which causes the commutator to rotate. Continuous application of the direct current voltage across the brushes causes the current to flow in a varying number of the current conducting windings as the commutator continues to rotate, the number periodically varying from all of the current conducting windings to the at least one current conducting winding.

Abstract: A direct current motor for use in a closed-loop control system is disclosed that includes a rotating commutator having a plurality of slots, a plurality of windings, the number of windings that conduct current corresponding to one less than the number of slots of the commutator, and a plurality of brushes that are configured so that application of a direct current voltage across the brushes results in a current flow in at least one of the windings which causes the commutator to rotate. Continuous application of the direct current voltage across the brushes causes the current to flow in a varying number of the current conducting windings as the commutator continues to rotate, the number periodically varying from all of the current conducting windings to the at least one current conducting winding.

Abstract: A direct current motor for use in a closed-loop control system is disclosed that produces a time varying signal indicative of a position of the motor. An embodiment of the motor includes a rotating commutator having a plurality of slots, a plurality of windings, the number of windings corresponding to one more than the number of slots of the commutator, and a plurality of brushes that are configured so that application of a direct current voltage across the brushes causes the commutator to rotate.A closed-loop control system is also disclosed that includes a direct current voltage source, a direct current motor in accordance with the present, a motor position signal source that generates a motor position signal for rotating the shaft of the direct current motor to a desired position, and a feedback circuit that corrects for any error in the desired position of the shaft of the direct current motor.

Abstract: A direct current motor for use in a closed-loop control system is disclosed that includes a rotating commutator having a plurality of slots, a plurality of windings, the number of windings that conduct current corresponding to one less than the number of slots of the commutator, and a plurality of brushes that are configured so that application of a direct current voltage across the brushes results in a current flow in at least one of the windings which causes the commutator to rotate. Continuous application of the direct current voltage across the brushes causes the current to flow in a varying number of the current conducting windings as the commutator continues to rotate, the number periodically varying from all of the current conducting windings to the at least one current conducting winding.