摘要:
In an intake air control device, a valve gear for driving a shaft of a throttle valve is made of non-magnetic metal that does not interfere with a magnetic circuit constituted by split type permanent magnet and yoke. Accordingly, as the magnetic flux from the magnetic circuit is effectively used without leakage to the valve gear, an opening degree of the throttle valve is accurately detected by a non-contact type Hall element. Further, it is not necessary to reinforce with other metal a ring shaped fixing portion of the valve gear that is rigidly fixed to an end of the shaft by staking or welding and an outer protrusion of the valve gear that comes in hitting contact with a stopper of a throttle body when the throttle valve is fully closed, resulting in less number of component parts and lower cost.
摘要:
An angular position detection apparatus, which can improve a detection accuracy of the angular position by improving a linearity of an output characteristic with respect to an angular position detection apparatus, and to downsize an outer size thereof. A permanent magnet is fixed to a side surface of a rotor core, which integrally rotates with a detection target object. An inner surface of a cylindrical portion of the rotor core is closely confronted with an outer surface of a stator core. Thus, the angular position detection apparatus is formed as a radial gap type in which magnetic flux is gone through an air gap G1 between the cylindrical portion and the stator core along a radial direction. A magnetic flux detection gap portion is formed at a center portion of the stator core so as to go through toward a diametral direction. A Hall IC is arranged in the magnetic flux detection gap portion. The permanent magnet is magnetized so that lines of magnetic force therein are parallel with each other. As a result, it can expand the range, in which the magnetic flux density in the magnetic flux detection gap portion linearly changes in proportion to the angular position of the rotor core, and it can improve the linearity of output characteristic of the Hall IC with respect to the angular position.
摘要:
A rotation-angle-detection device includes a main housing, a resinous cover for covering an opening of the main housing, a permanent magnet disposed at the main housing to be rotatable in response to rotation of a throttle valve, and a magnetic sensor. The cover is longer in longitudinal direction than in lateral direction, and the magnetic sensor is fixed to the resinous cover. The magnetic sensor is disposed so that the detection direction and the longitudinal direction of the cover cross each other at a right angle.
摘要:
An electronic-parts mounting apparatus includes an electronic-parts feeder. A mounting head operates for carrying electronic parts from the electronic-parts feeder. The mounting head includes a plurality of nozzles for holding the electronic parts respectively. An electronic-parts mounting portion operates for enabling the mounting head to mount the electronic parts on a circuit board. A first mechanism operates for rotating each of the nozzles. A second mechanism operates for moving each of the nozzles upward and downward. The first mechanism may include a pinion provided on an outer circumferential surface of each of the nozzles, and a rack meshing with the pinion.
摘要:
A message display system for a programmable controller having a function for displaying a message in different languages and an improved program processing efficiency. A message storing means for a plurality of languages includes a plurality of storing areas (1a-1c) for storing messages in the different languages. In the respective languages storing areas (1a-1c), messages having the same meaning in the different languages are stored in addresses having a sequence corresponding to one another. When a power is supplied to the PC, a message transfer means (3) transfers a message of a single language previously designated by a parameter (2) from the message storing means (1) for a plurality of languages to a message storing means (4) for a single language. Then, a message selection means (5) designates a message desired to be displayed on a display screen when the PC is in operation by an address determined to correspond to the meaning of each message, and a message display means (6) fetches the message at the designated address from the message storing means (4) for a single language and displays the same on the display screen of a display unit (7).
摘要:
A tire warm-up wrap used for pre-heating tires of motor racing cars and motor cycles immediately before the start of a race is provided with a heat generating narrow fabric woven from a warp containing (i) an electrically heat-generating flexible yarn made of a mixed yarn composed of discontinuous conductive metal fibers and non-conductive fibers, and (ii) a non-conductive fiber yarn, and a weft composed of a non-conductive fiber yarn. The fabric has in both of the lengthwise end portions thereof wefts composed of conductive metal wires which are divided into a plurality of metal wire electrodes. The electrically heat-generating flexible yarns of the warp and the divided metal wire electrodes form together a series circuit extending forward and backward alternately along the length of the fabric between the divided metal wire electrodes in both the end portions thereof.
摘要:
A tool management method in a factory automation (FA) system uses an FA computer and machining cells. An FA computer such as a cell controller is connected with computer numerically-controlled units via bi-directional communication lines. When data on a tool service life or the like is changed on the cell controller (S1, S2), the changed data on the tool service life is sent to a computer numerically-controlled unit (S3) to update the data on the tool service life stored in the computer numerically-controlled unit (CNC) (S4). Similarly, when the computer numerically-controlled unit changes the number of times the tool has been used or the like, the changed data is sent to the cell controller in the same way. This enables the cell controller to be always informed of the most recent tool management data. And as the computer numerically-controlled units can immediately obtain tool management data that has been changed at the cell controller, a more efficient tool management is ensured.
摘要:
Disclosed is a signal transfer control system of a programmable controller for transferring I/O signals between the PC and an external device. An I/O unit (26) includes an I/O signal region (1) for storing I/O signals transferred or received to or from an external device, and mapping data (2) for defining the mapping of the I/O signal region (1). Further, a RAM (23) of the PC includes point data (3) for defining the address to which I/O signals from the mapping data (2) are to be transferred, and an I/O data region (4) for storing the I/O data. Input signals are stored in the I/O signal region (1) and each of the I/O signals is mapped by the mapping data (2), and the point data (3) determines the address to which each of the mapped input signals is to be transferred. Namely, the addresses to which the input signals are to be transferred are determined by the mapping data (2) and the point data (3), and the input signals are then transferred to the I/O data region (4). Conversely, the input signals are transferred from the I/O data region (4) to the I/O signal region (1) by the point data (3) and the mapping data (2). Therefore, even if the arrangement of these I/O signals is changed, the change can be dealt with by changing the point data or the mapping data, without the need to change a sequence program.
摘要:
Disclosed is a malfunction diagnosis system used for the diagnosis of a malfunction of a numerical control system (CNC) having a programmable controller (PC) by a remote host computer. A host computer (4) reads input and output signals of a programmable controller (PC), diagnoses the malfunction, and repairs the malfunction by processing the input and output signals, whereby the malfunctions can be repaired by a remote control operation.
摘要:
A sputtering apparatus for producing a thin film with use of a laser beam is disclosed. The sputtering apparatus comprises a vacuum chamber, a target and a substrate disposed inside the vacuum chamber, a laser beam-projecting unit, a beam-shape adjusting unit, an optical scanning unit, and a light-converging unit. The optical scanning unit comprises a mirror which rotates to allow the laser beam to scan the target, and the angular speed thereof is regulated so as to move the spot of the laser beam at a fixed speed on the target. The beam-shape adjusting unit or the light-converging unit moves along its optical axis in synchronization with the movement of the mirror of the optical scanning unit, thereby keeping the spot of the laser beam at a predetermined size.