摘要:
A method and apparatus are provided for testing a microactuator that forms part of a suspension assembly in a disc drive. The method and apparatus test the microactuator before placing the suspension assembly in a disc drive. In the invention, the head is positioned over a track on a disc based in part on servo information read from the disc. At least one input signal is then applied to at last one microactuator on the suspension assembly. Servo information is then read from the disc to determine a change in the position of the head. By comparing the change in the position of the head to the input signal applied to the microactuator, a performance characteristic of a microactuator can be determined.
摘要:
A window seal testing machine for seals of the type used in powered automotive windows, the testing machine comprising an adjustable frame simulating a portion of a powered automotive window, the frame being adapted to receive one or more sets of window seals and a piece of window glass therein to simulate the sealing relationship between the seals and window glass in an actual automotive window. The testing machine further includes a drive mechanism for repetitively cycling the window glass through the frame and seals to simulate actual window operation over hundreds or thousands of cycles. The entire machine is preferably self-contained and portable, and the frame is further adjustable to be adapted to test different sets of seals and types of window glass.
摘要:
An inspection apparatus for inspecting the soundness of a substrate transfer robot of a type horizontally transferring a substrate such as a semiconductor wafer mounted on a blade. The inspection apparatus is efficiently used in a multi-chamber type semiconductor manufacturing apparatus and has a noncontact type distance sensor capable of measuring a vertical distance. When the upper face of a cassette stage disposed within a load-lock chamber is assumed to be a reference surface, the distance sensor in the inspection apparatus measures the vertical distance between the horizontal reference surface and the blade of robot moving above the reference surface. From thus measured value, the warp of blade and its shaking upon movement can be detected.
摘要:
A Villari effect seatbelt tension sensor 10 comprises a sensor housing 50 having a plunger chamber 52 and a tongue head flange chamber 54 therein. The two chambers 52 and 54 are separated by a radial flange 58 extending therebetween defining a passage connecting the chambers. A Villari effect sensor 12 is disposed axially within the sensor housing 50 and is secured on one end 16 to a plunger 40 disposed within the plunger chamber 52 and secured on the opposite end 14 to a tongue head flange 20 disposed within the tongue head flange chamber 54. A tongue 24 connected by a shaft 28 to the tongue head flange 20 has a slot 26 therein for securing a seatbelt 80 thereto.
摘要:
The present invention concerns a testing object for use in the testing of a wafer clamp. Wafer clamps are used to hold wafers in position on etchers. If the wafer clamp is worn, the process yield drops due to the heating of the wafer and subsequent photoresist melting. The testing object passes wafer clamps having a sufficient wafer overlap distance, but fails wafer clamps without a sufficient wafer overlap distance.
摘要:
A device is provided to detect the rotational position of a steering wheel. A rotating steering shaft connected to the steering wheel is coaxial with respect to a non-rotating steering column. On one surface of the steering column facing the steering shaft, there is an electrical resistance sheet that extends in the peripheral direction of the steering column. Fastened to the steering shaft are at least two wipers associated with the resistance sheet, such that at all times at least one wiper is in contact with the resistance sheet in a position defined by the rotational position of the steering shaft. Preferably, there are exactly three wipers that correspond to the same resistance sheet that are offset from one another by about 120 degrees.
摘要:
The present invention provides an NC machine tool which permits a check for the run-out of a spindle thereof at any time. The NC machine tool includes deflection detecting means (22) provided on a base within a machining area, and run-out diagnosing means (8) for conducting a diagnosis on the run-out of the spindle by calculating the amount of the run-out of the spindle on the basis of a deflection detected by the deflection detecting means (22) and comparing the calculated run-out amount with a predetermined tolerance. A test tool is attached to the spindle and rotated about an axis thereof, and the deflection of an outer circumferential surface of the test tool is detected by the deflection detecting means (22). On the basis of the deflection thus detected, the run-out diagnosing means (8) conducts a diagnosis on the run-out of the spindle. The diagnosis on the run-out of the spindle can be achieved through a simple and easy operation by moving the test tool into a detection area of the deflection detecting means (22).
摘要:
Focusing on the application of a predetermined relationship between the length of a fatigue damage detection sensor having a width of a specified shape and a required sensitivity or sensing accuracy (crack propagation rate), the present invention provides a fatigue damage detection sensor for structural materials and mounting method thereof, wherein when the length between a pair of fixing portions for fixing to a surface of a structural material M, both ends of a sensor body (2) sandwiching a notched portion (5) is defined as 2H, the length of a crack C that can propagate from a tip (5A) of the notched portion (5) is defined as (a), the number of times that a working load acts on the material is defined as N, and the crack propagation rate is defined as da/dN, the length 2H between said fixing portions is set so as to obtain a required sensitivity with which da/dN is proportional to H0.5m (m is a constant determined by a material). According to this fatigue damage detection sensor for structural materials and mounting method thereof, the sensor can provide a high sensing performance to stably and reliably determine the level of fatigue damage caused to a structural material, based on the rate and amount of crack propagation.
摘要翻译:针对具有规定形状的宽度的疲劳损伤检测传感器的长度与所需的灵敏度或感测精度(裂纹扩展率)之间的预定关系的应用,本发明提供了一种用于结构材料的疲劳损伤检测传感器, 其特征在于,在固定在结构材料M的表面上的一对固定部之间的长度的情况下,夹着切口部(5)的传感器体(2)的两端的长度定义为2H, 可以从切口部(5)的尖端(5A)传播的裂纹C定义为(a),工作载荷作用在材料上的次数定义为N,裂纹扩展速度定义为 da / dN,所述固定部分之间的长度2H被设定为获得所需的灵敏度,其中da / dN与H0.5m成比例(m是由材料确定的常数)。 根据该结构材料的疲劳损伤检测传感器及其安装方法,传感器可以提供高感测性能,以稳定可靠地确定对结构材料造成的疲劳损伤的程度,基于裂纹扩展的速率和量。
摘要:
A bracelet for moving sensors along a straight or elbow pipe. The bracelet has a number of side-by-side positionable supports for removably holding the sensors respectively. A flexible attachment is provided for holding the supports in a pliant side-by-side series arrangement. The attachment has opposite ends extending beyond the supports at opposite ends of the series arrangement. The bracelet further has a frame having an inner circular opened surface for installation around the pipe, and a longitudinal circular side receiving surface along which the series arrangement of the supports is mounted. The side receiving surface is provided with fastening members projecting at both ends of the series arrangement of the supports. The ends of the attachment is supported by the fastening members.
摘要:
A thermal type air flow rate sensor is formed with at least a heating resistor and a temperature measuring resistor on a semiconductor substrate via an electric insulation film, by forming the heating resistor and the temperature measuring resistor with an impurity doped silicon (Si) semiconductor thin film, and by performing high concentration doping process so that an electric resistivity (&rgr;) of the silicon (Si) semiconductor thin film is less than or equal to 8×10−4 &OHgr; cm, with simplified fabrication process for formation of the silicon (Si) semiconductor thin film at the same impurity concentration simultaneously in a lump at low cost.