摘要:
Disclosed is a variable capacitance type encoder for measuring the length of an object to be measured on the basis of the amount of a probe which is brought into contact with the object. The amount of the movement of the probe is detected by the variation of electrostatic capacity between a rotary disc which is secured to the shaft, e.g., threaded shaft of the probe, and fixed plates which are secured to a baseplate so as to be opposed to the rotary disc. Two fixed plates are opposed to the rotary disc, and at least one fixed plate is provided with first and second transmitting electrodes composed of a pluarlity of electrode elements to which voltages of different phases are applied and which are annularly arranged at regular intervals in the circumferential direction of the fixed plate. The phase difference between the voltages which are applied to both transmitting electrodes is 180.degree.. On the other hand, the rotary disc is provided with first and second receiving electrodes for receiving signals of a common phase by electrostatic coupling with both transmitting electrodes. Each fixed plate is provided with an output electrode which electrostatically couples with the respective receiving electrode for fetching a signal through electrostatic coupling.
摘要:
A variable capacitance type encoder for measuring the length of an object to be measured on the basis of detecting the amount of movement of a probe as a function of the variation of electrostatic capacity between a rotary disk which is secured to a shaft and a pair of fixed disks which are secured to a frame body so as to be opposed to the rotary disk. On at least one fixed disk is provided first and second transmitting electrodes composed of a plurality of electrode elements to which voltages of different phases are applied. The rotary disk is provided with first and second receiving electrodes for receiving signals of a common phase by electrostatic coupling with both transmitting electrodes. Each fixed disk is further provided with an output electrode which is electrostatically coupled with the respective receiving electrode.
摘要:
A capacitor discharge ignition device for an engine including: an exciter coil provided in a magneto generator driven by the engine; a voltage increasing circuit that increases an induced voltage of the exciter coil; a capacitor charged by an output voltage of the voltage increasing circuit; and a discharge switch that is turned on at ignition timing of the engine and discharges charges in the capacitor through a primary coil of the ignition coil, wherein the ignition device further includes a voltage increasing control portion that controls the voltage increasing circuit so as to increase an output voltage of the voltage increasing circuit when a rotational speed of the engine is a set value or less, and limit the output voltage of the voltage increasing circuit when the rotational speed of the engine exceeds the set value.
摘要:
An electronic control unit for a two-cycle internal combustion engine including an exhaust control valve which adjusts exhaust timing, a valve controller which controls the exhaust control valve, and a reversal controller which controls reversing a rotational direction of the engine in accordance with an instruction for reversal. In order to raise the probability of a success in reversing the rotational direction of the engine by generating a stable combustion pressure during the reversal of the rotational direction, there is provided valve opening and closing operation inhibition means which inhibits an opening and closing operation of the exhaust control valve by fixing the exhaust control valve in a fully-closed position while the reversal controller is performing control to reverse the rotational direction of the engine.
摘要:
A rotary encoder 10 is composed of a halfway cylindrical stator 11 and a cylindrical rotor 12. The rotor 12 is disposed coaxial with the stator 11 with a predetermined gap. Plural transmitting electrodes 13 with spiral patterns and receiving electrode 14 with a rectangular pattern are formed on the inner surface of the stator 12. The transmitting electrodes 13 and receiving electrode 14 are formed of a FPC substrate 17 with lead lines 15, 16. On the outer surface of the rotor 12, coupling electrode 18 are formed with a spiral pattern so as to be capacitively coupled to the transmitting electrodes 13 and receiving electrode 14. FIG. 4C
摘要:
There is disclosed an ampholytic polymer capable of absorbing aqueous electrolyte solutions, which is obtainable by polymerization of a monomer mixture including (A) at least 10 mol % of an ampholytic vinyl monomer, with the proviso that when the monomer (A) has no self-crosslinkability, the amount of monomer (A) is in the range of 10 to 99.995 mol %. The monomer mixture may further include (B) 90 mol % or less of a non-ampholytic vinyl monomer and (C) 1 mol % or less of a crosslinkable monomer, with the proviso that the total amount of monomers (A), (B) and (C) is 100 mol % and when the monomer (A) has no self-crosslinkability, the amount of monomer (C) is in the range of 0.005 to 1 mol %.
摘要:
A discharge tube structure of a gas laser generator has end common vessels at its both end sections and an intermediate common vessel at its intermediate section. The end common vessels and intermediate common vessel are connected through the first and second cooling ducts to a centrifugal blower, which is provided at its center the first communicating port communicating with the first cooling duct and at least two second communicating ports communicating with the second cooling ducts opposed to each other with respect to the first communicating port. The simplified second cooling ducts allows the mixture gas to be supplied smoothly to the intermediate common vessel, thereby increasing the laser output.
摘要:
A gas laser device has an anode and a cathode arranged oppositely in a discharge tube. The cathode comprises a plurality of cathode members each having a predetermined discharge effective cathode surface and each being electrically isolated from others. A switching circuit selects the cathode member(s) used for a continuous wave oscillation and the cathode member(s) used for a pulsed oscillation. The total area of the discharge effective cathode surface(s) of the cathode member(s) used for the pulsed oscillation is selected to be smaller than, preferably 1/3 to 1/2 of that of the discharge effective cathode surface(s) of the cathode member(s) used for the continuous wave oscillation.
摘要:
In a circuit breaker having puffer type circuit breaking units housed within a tank of metal material, an inspection opening is formed in the tank side wall at a position opposite to a contact assembly in each of the circuit breaking units and is tightly closed by a detachable cover.
摘要:
In an electromagnetic induction type absolute position measuring encoder having two or more tracks which includes: two or more rows of scale coils, each row including scale coils numerously arranged on a scale along a measuring direction so as to have a scale pitch different from that of another row; and transmitter coils and receiver coils provided on a movable grid relative to the scale in the measuring direction so as to face the scale coils, and which can measure an absolute position of the grid with respect to the scale on the basis of a flux change detected at the receiver coil via the scale coil when the transmitter coil is excited, coil lines are added to at least one side of the scale coils in the measuring direction at least in one of the tracks.