Abstract: A system and method reduces undesired noise or vibration in a vehicle. The ambient vibration is measured and command signals are generated over time. The command signals are generated based upon the measured vibration and based upon a control weighting. By varying the control weighting over time, the maximum possible performance is always obtained subject to the saturation constraints.

Abstract: Conductive substructures of a multilayered laminate and associated methods of fabrication. The conductive substructures include a 0S1P substructure, a 0S3P substructure, and a 2S1P substructure, in accordance with the notation nSmP, wherein n and m are non-negative integers, wherein S stands for “signal plane,” and wherein P stands for “power plane.” A signal plane is characterized by its inclusion of a layer comprising conductive circuitry. A power plane is characterized by its inclusion of a continuously conductive layer. Thus, a 0S1P substructure includes 0 signal planes and 1 power plane (n=0, m=1). A 0S3P substructure includes 0 signal planes and 3 power plane (n=0, m=3) with a dielectric layer between each pair of power planes. A 2S1P substructure includes 2 signal planes and 1 power plane (n=2, m=1) with a dielectric layer between the power plane and each signal plane.

Abstract: Conductive substructures of a multilayered laminate and associated methods of fabrication. The conductive substructures include a 0S1P substructure, a 0S3P substructure, and a 2S1P substructure, in accordance with the notation nSmP, wherein n and m are non-negative integers, wherein S stands for “signal plane,” and wherein P stands for “power plane.” A signal plane is characterized by its inclusion of a layer comprising conductive circuitry. A power plane is characterized by its inclusion of a continuously conductive layer. Thus, a 0S1P substructure includes 0 signal planes and 1 power plane (n=0, m=1). A 0S3P substructure includes 0 signal planes and 3 power plane (n=0, m=3) with a dielectric layer between each pair of power planes. A 2S1P substructure includes 2 signal planes and 1 power plane (n=2, m=1) with a dielectric layer between the power plane and each signal plane.

Abstract: A system is provided for the semi-active damping of oscillations during vertical motion of an elevator car relative to a desired trajectory along a relatively lengthy elevator travel path. The elevator car is connected to a motor-controlled support rope in a manner allowing limited relative vertical motion therebetween. A soft spring and a controllable damping means are connected in parallel between the rope and the elevator car. The damping means may be a hydraulic piston and cylinder arrangement controlled via a variable orifice valve. The spring may be a gas-pressurized accumulator connected to the hydraulics of the damping means. A control system provides a motion command signal to control the motor for motion control and the variable orifice valve for damping oscillations.

Abstract: A virtually active hitch system is provided for the damping of vertical oscillations of an elevator car during a semi-active hitch mode of operation along a relatively lengthy elevator travel path and for load leveling the elevator car during an active mode when the elevator is braked. The virtually active hitch stores energy derived from the elevator motor during the semi-active mode, and utilizes that stored energy during the active mode to actively adjust the positioning of the elevator car, as might result from load changes. The hitch assembly may advantageously use hydraulic piston and cylinder means to adjust, or impede adjustment of, a limited hitch gap between a support rope and the elevator car. The hydraulic circuit associated with the piston and cylinder may include a variable orifice valve to control damping action and a pair of accumulators controlled via a switching network to selectively store and release energy and to also serve as a spring.

Abstract: A printed circuit board for use in an electronic device package such as a ball grid array package or organic chip carrier package includes a glass-free dielectric for separating and insulating power cores, circuitry or plated through holes from each other to prevent shorts caused by a migration of conductive material along glass-based prepreg substrates.

Abstract: A control system includes a plant 56 having resonant modes and a controller 5 which receives plant input signals on lines 14,24 from the plant 56 and provides a controller output signal I, related to a filter output signal V, which controls the plant 6. The controller is provided with a non-linear notch filter 30 which receives a filter input signal x related to the plant input signals and provides the filter output signal V. The notch filter has at least one notch frequency near one of the resonant modes so as to attenuate one of the modes by a predetermined amount and has a phase lag a decade below the lowest notch frequency of said notch filter which is less than that of a corresponding linear notch filter, thereby allowing the control system 7 to exhibit faster time response and increased bandwidth than a system employing linear notch filters.

Abstract: According to the present invention, a technique for controlling the flow of plastic encapsulant which is applied over an integrated circuit (I/C) chip wire bonded to wire pads formed on a chip carrier substrate is provided. This technique includes applying a barrier material to the substrate surrounding the wire bond pads, which barrier material is in the form of two walls projecting upwardly from the surface thereof, and defining a well between the walls to confine the flow of the encapsulant material. This prevents the encapsulant material from flowing past a desired defined boundary and covering the circuit connection pads which are not intended to be covered.

Abstract: According to the present invention, a technique for controlling the flow of plastic encapsulant which is applied over an integrated circuit (I/C) chip wire bonded to wire pads formed on a chip carrier substrate is provided. This technique includes applying a barrier material to the substrate surrounding the wire bond pads, which barrier material is in the form of two walls projecting upwardly from the surface thereof, and defining a well between the walls to confine the flow of the encapsulant material. This prevents the encapsulant material from flowing past a desired defined boundary and covering the circuit connection pads which are not intended to be covered.

Abstract: An elevator motion control system compares a dictated flight path signal (101), indicative of a desired elevator flight path along a nominal flight trajectory, with a measured flight path signal (108), indicative of actual elevator motion, and provides a motion command signal (115) to both a high pass filter (117) and a low pass filter (116) such that the frequency of the motion command signal is split into high and low frequency components (141,118). An active elevator hitch (36) is used to implement the high frequency/low stroke portion of the motion command signal while the elevator motor (28) is used to implement the low frequency/high stroke portion of the motion command signal.

Abstract: A reduced phase-shift nonlinear filter includes linear filter logic 10 responsive to a filter input signal x and having a linear transfer function G(s), which provides a linear filtered signal g, zero-cross sample-and-hold logic 16 responsive to the filter input signal x and the linear filtered signal g, which provides a square wave signal n which crosses zero at the same time and in the same direction as the filter input signal x and has an amplitude proportional to the value of the linear filtered signal g at that time, complementary filter logic 20 responsive to said square wave signal n and having a complementary transfer function (1-G(s)) which provides a complementary filtered signal c, and a summer 30 which adds the complementary filtered signal and the linear filtered signal to provide a filter output signal y which exhibits less phase shift over certain frequency bands than that of the linear transfer function.

Abstract: A jointed spinner bait which comprises a forward hook and lure portion and a trailing spinner portion; a removably connected rigid wire segment inserted directly ahead of and secured to said trailing spinner portion, said rigid wire segment having ends prebent into closable eye portions, the eye on one end of said segment being on one side of such wire segment while the eye on the other end thereof is on the opposite side of such wire segment, such closable eye portions being adapted to engage with and to be removable from an eye on said spinner portion and from an eye on said forward portion of such bait, said wire segment including vibration into said spinner bait as the spinner rotates. Modifications include providing an offset bend in the forward end of said wire section; adding a spiral vane along the longitudinal axis of said wire segment; and introducing a lighted spinner assembly into the jointed spinner bait.