Mitsubishi Denki Kabushiki Kaisha

Other

Nippon Avionics Co., Ltd.

Homare Co., Ltd.

Mitsubishi Electric Corporation

Shinichi Hattori

Takahiro Sakamoto

Takashi Shimada

Ryosuke Taniguchi

Noritaka Egami

Kanji Matsuhashi

Tohru Ida

Fumio Kurosu

Syuichi Nakamura

Shuzo Matsuno

Ryosuke Tanigushi

Midori Ono

A noise elimination apparatus has a subtracting sectionfor obtaining a difference value between input image data and reference image data; a calculation processing sectionfor performing calculation processing of multiplying the difference value by a prescribed coefficient; an adaptive integerization processing sectionfor obtaining an integerized difference value by adaptively performing rounding up processing or rounding down processing on the difference value having undergone the calculation processing; an adding sectionfor obtaining output image data from the integerized difference value and the reference image data; and a frame memoryfor storing the output image data as the reference image data.

Noise elimination apparatus and noise elimination method

Massage roller

In a pattern inspection method, a master pattern serving as a reference and the continuous tone image of a pattern to be measured that is sensed by a camera are aligned. At least the position of a base in the continuous tone image of the pattern to be measured is detected on the basis of the master pattern. At least one threshold is set on the basis of the difference from at least the density value of the base. The continuous tone image of the pattern to be measured is binarized on the basis of the set threshold. The pattern to be measured is inspected by comparing the binarized pattern to be measured and the master pattern. A pattern inspection apparatus and alignment method are also disclosed.

Pattern inspection method and apparatus, and pattern alignment method

An object of this invention is to confirm the content of a defect in real time. A defect image, corresponding master pattern image, failure designation button, nondefective designation button, dust designation button, piece number, piece coordinates, and the type of defect are displayed within a defect image region in an inspection status display window. When the nondefective designation button or dust designation button is selected, the inspecting apparatus recognizes that a defect corresponding to the selected button is negligible, and changes the inspection result of this defect from the defect to a nondefective.

Inspection status display method

An elastic wave generator includes an excitation coil, a magnetostriction oscillator around which the excitation coil is wound and an oscillator support. The excitation coil is wound around the oscillator, which is made of laminated magnetostriction sheets having a positive strain characteristic, in which length varies directionally upon magnetic excitation. The oscillator support has a first support surface bearing against a first end surface of the magnetostriction oscillator, intersecting the direction along which the length of the magnetostriction oscillator changes and a second support surface shrink-fit against a second end surface of the magnetostriction oscillator, intersecting the direction along which the length of the magnetostriction oscillator changes. Thus, the changes in the length of the magnetostriction oscillator due to the magnetic excitation of the excitation coil appearing at the first and second end surfaces is directly supported by the first and second support surfaces. The magnetostriction oscillator is shrink-fit by cooling so it may be placed between the support surfaces while cooled.

Method of mounting elastic wave generator

A nondestructive inspection apparatus includes a vibrating section which is adapted to be placed in pressure contact with a surface of a measuring object for generating an acoustic elastic wave W, a receiving section for receiving a reflected wave, a pushing mechanism for pushing the vibrating section and the receiving section against the measuring object, a pushing force measurement section for detecting pushing forces Fa, Fb during vibration, a vibration control section for driving the vibrating section, and a reception signal processing section for determining the internal defect based on a reception signal R. The reception signal processing section includes a reflection energy calculation section for calculating a reflection energy level due to elasticity vibration of the measuring object, a reflection energy correction section for normalizing the reflection energy level by the pushing force to calculate a correction value; and an internal defect determination section for detecting the internal defect based on the correction value. With this arrangement, the absolute reflection energy level of the reflected wave is determined through comparison, thereby making it possible to improve the evaluation accuracy of the internal defect to a substantial extent.

Nondestructive inspection apparatus for inspecting an internal defect in an object

A nondestructive testing apparatus is provided with a wave transmitter by a metal-based magnetostrictive vibrator, a magnetically excited current feeding device for feeding the magnetically excited current to the magnetostrictive vibrator, a wave receiver for detecting an acoustic elastic wave propagating through the measurement object, a filter for extracting a signal in a target frequency band to be measured, and an automatically amplifying rate controlling function-equipped amplifier for automatically controlling the amplifying rate so as to obtain a given magnitude amplitude regardless of the magnitude of the reflection wave or the transmission wave detected by the wave receiver, which constitute a feedback loop. The apparatus is further provided with a signal processor for processing the signal detected by the above-described wave receiver, and a display device for displaying the process result obtained by the signal waveform detected by the above-described wave receiver or the above-described signal processor.

Nondestructive testing apparatus

A vibration exciter machine has magneto striction elements (5,6) supported by a driven pile (2), for providing a vibration of up and down direction to the driven pile (2), and a drive circuit (D1) for controlling expansion and contraction movement of the magneto striction elements (5,6) by changing a supply time period of a current supplied to the magneto striction elements (5,6). By controlling of the drive circuit (D1) the supply time period of the current which flows in the magneto striction elements (5,6) is changed to control the expansion and contraction movement of the elements (5,7). Thereby a horizontal vibration component can be eliminated and only vertical vibration component can be transmitted to the driven pile material (2).

Vibration exciter machine

A non-destructive examination device has an excitation current generation device for supplying an excitation current based on a control signal from a control device, a vibration excitor device for generating an elastic wave in accordance with athe excitation current and for vibrating an examination target to be examined by using the elastic wave; a response detection device (an acceleration sensor) for detecting a response of the vibration of the examination target caused by the elastic wave and for processing the response data in order to select desired examination information. The excitation current generation device generates the excitation current of an alternating pulse wave such as a pulse wave, or a rectangular wave, or a triangular wave, or a sine wave based on the control signal which is also a pulse signal. It can be acceptable to incorporate a plurality of the vibration excitor devices on the examination target in the non-destructive examination device.

Non-destructive examination device

A magnetostrictive element generates an ultrasonic wave and the generated ultrasonic wave is propagated through a propagation medium. An acoustic wave receiver receives the propagated ultrasonic wave at the other end of the propagation medium and converts it into an electric signal. A signal transmission is carried out in this way.

System for transmitting a signal

A control system for a movable robot, having a movable member which is linearly movable on and articulated about a base and having an articulated arm with a work element, executes a prestored continuous path program for moving the work element through a continuous path by simultaneous coordinated linear and articulation displacements of the movable member and arm in all degrees of freedom. These simultaneous coordinated displacements are produced by interpolating in advance the position of the movable member at a teaching point and by loading the interpolated position of the movable member into an interpolation calculation of the arm position.

Controller for movable robot for moving a work element through a

This invention relates to a machining apparatus for repeating the position and the attitude of a desired point on a work, memorizing as a plurality of data in a memory device, and automatically operating a jig from the stored point to the stored point in accordance with calculated result of a calculator for calculating to interpolate between these points while a machining head remains stationary. The device comprises a detector for teaching the position and the attitude of the machining head with respect to the work independently from the machining head in case of forming teaching data. A calculator is provided for calculating the spatial position and attitude entirely in the same manner as the detector with respect to the work by the stored data under playback condition so that the machining head takes with respect to the work. Also, a control unit is provided for controlling the position and the attitude of the jig in accordance with the calculated result of the calculator, and a drive unit for driving the jig on the basis of a command from the control unit.

Growing community of inventors

Tokyo, Japan

Shinichi Hattori