A pleat counter and methods are provided to accurately count the number of pleats in a corrugated sheet of material to be used for the production of air filters. The pleat counter comprises a pleat detector mounted underneath a mounting board for counting the pleats. The mounting board is configured to position the pleat detector adjacent to the corrugated sheet of filter material. The pleat detector includes one or more sensors configured to detect the presence of individual pleats comprising the corrugated sheet. The pleat counter includes an interface configured to enable coupling the pleat counter with a data processing system. The data processing system may comprise any of a desktop, a tablet, a server, a mobile phone, a media player, a personal digital assistant (PDA), a personal communicator, a network router or hub, a wireless access point (AP) or repeater, a set-top box, or a combination thereof.

An encoder includes a position information generating unit that generates position information made of a predetermined amount of data and including absolute position data of an object to be detected; a configuration information generating unit that generates configuration information representing a ratio of the absolute position data in the amount of data during serial communication; and a transmission unit that transmits, to the control device, the position information and the configuration information as a series of serial data or as separate serial data. The control device includes a reception unit that receives the position information and the configuration information transmitted from the encoder; a storage unit that stores the received configuration information; and a control unit that processes the received position information on the basis of the stored configuration information.

An encoder includes a position information generating unit that generates position information made of a predetermined amount of data and including absolute position data of an object to be detected; a configuration information generating unit that generates configuration information representing a ratio of the absolute position data in the amount of data during serial communication; and a transmission unit that transmits, to the control device, the position information and the configuration information as a series of serial data or as separate serial data. The control device includes a reception unit that receives the position information and the configuration information transmitted from the encoder; a storage unit that stores the received configuration information; and a control unit that processes the received position information on the basis of the stored configuration information.

A feedback system senses a steering position of a nose wheel assembly for an aircraft. The nose wheel assembly has a first element rotatably associated with a second element about an axis, and the rotational position of the first element relative to the second element corresponds to the steering position of the nose wheel assembly. The feedback system includes a first magnetic field sensor fixedly positioned relative to the first element and configured to sense a first element orientation. A second magnetic field sensor is fixedly positioned relative to the second element and configured to sense a second element orientation. The feedback system further includes a controller programmed to determine the steering position of the nose wheel according to the sensed first element orientation and the sensed second element orientation.

A capacitive sensor assembly includes a capacitive transduction element and an electrical circuit disposed in the housing and electrically coupled to contacts on an external-device interface of the housing. The electrical circuit includes a sampling circuit having an operational sampling phase during which a voltage produced by the capacitive sensor is sampled by a sampling capacitor coupled to a comparator and an operational charging phase during which a second capacitor is charged by a charge and discharge circuit until the output of the comparator changes state, wherein the output of the sampling circuit is a pulse width modulated signal representative of the voltage on the input of the sampling circuit during each sample period. The output of the sampling circuit can be coupled to a delta-sigma analog-to-digital (A/D) converter.

Embodiments of the invention include a resonant sensing system comprising driving circuitry to generate a drive signal during excitation time periods, a first switch coupled to the driving circuitry, and a sensing device coupled to the driving circuitry via the first switch during the excitation time periods. The sensing device includes beams to receive the drive signal during a first excitation time period that causes the beams to mechanically oscillate and generate a first induced electromotive force (emf) in response to the drive signal. The first switch decouples the sensing device and the driving circuitry during measurement time periods for measurement of the induced emf.

Embodiments of the invention include a resonant sensing system comprising driving circuitry to generate a drive signal during excitation time periods, a first switch coupled to the driving circuitry, and a sensing device coupled to the driving circuitry via the first switch during the excitation time periods. The sensing device includes beams to receive the drive signal during a first excitation time period that causes the beams to mechanically oscillate and generate a first induced electromotive force (emf) in response to the drive signal. The first switch decouples the sensing device and the driving circuitry during measurement time periods for measurement of the induced emf.

Technical solutions are described for performing sensitivity analysis for engineering systems in spatial-temporal domain. An example method includes receiving a set of process parameters and retrieving a multidimensional dataset containing historical values of the process parameters and corresponding output values. The method further includes selecting a sampling algorithm to divide the multidimensional dataset into multiple subspaces, and selecting multiple samples (x.sub.i), one sample from each subspace. The method further includes perturbing the samples, computing a first effect (EE.sub.i) on an output value (y), and computing a second effect (SEE.sub.ii) of perturbing a pair of samples (x.sub.i and x.sub.j) on the output value. The method further includes computing a sensitivity coefficient of the process parameters on the output value using the second effect for x.sub.i and x.sub.j, the first effect for x.sub.i, and the first effect for x.sub.j. An automatic visualization scheme for the global sensitivity results is also provided.

Technical solutions are described for performing sensitivity analysis for engineering systems in spatial-temporal domain. An example method includes receiving a set of process parameters and retrieving a multidimensional dataset containing historical values of the process parameters and corresponding output values. The method further includes selecting a sampling algorithm to divide the multidimensional dataset into multiple subspaces, and selecting multiple samples (x.sub.i), one sample from each subspace. The method further includes perturbing the samples, computing a first effect (EE.sub.i) on an output value (y), and computing a second effect (SEE.sub.ii) of perturbing a pair of samples (x.sub.i and x.sub.j) on the output value. The method further includes computing a sensitivity coefficient of the process parameters on the output value using the second effect for x.sub.i and x.sub.j, the first effect for x.sub.i, and the first effect for x.sub.j. An automatic visualization scheme for the global sensitivity results is also provided.

Disclosed herein are a sensor mounting structure of an electric power steering apparatus and an electric power steering apparatus having the same. The sensor mounting structure of an electric power steering apparatus includes a housing having a first accommodation part of which one side surface is open to accommodate a worm wheel and a second accommodation part which communicates with the first accommodation part and accommodates a worm shaft, a sensing unit disposed such that the sensing unit is spaced a predetermined distance from and faces the worm wheel, and a fastening means which fixes the sensing unit to the housing.