Abstract: A torque meter enables highly accurate measurement of a torque by detecting only the torque, without being affected by various loads. The torque meter includes an elastic member placed in a power transmission channel and being deformed upon application with a torque being measured, and a means for detecting the torque based on the deformation of the elastic member. The torque member receives a torque being applied to the elastic member, and the load member is provided separately from the torque member, for supporting the load of the elastic member.

Abstract: A CPU generates the reference value (root mean squared value) of sound level and outputs it to a DSP, the DSP generates a measured value of sound level (root mean squared value), and compares thus-generated measured value of sound level (root mean squared value) with the reference value (root mean squared value) of sound level received from the CPU, and outputs a signal expressing the result of comparison to a display device, to thereby enable comparison of the measured value of sound level (root mean squared value) with the reference value (root mean squared value) of sound level, every time the sampling takes place in synchronization with the sampling frequency in the A/D converter.

Abstract: The present invention relates to a non-linear characteristic reproducing apparatus wherein a non-linear transformation processing is applied to a state quantity to be outputted. A non-linear behavior of products and parts is reproduced through modeling. [Solving means] there are provided a non-linear characteristic reproducing unit for receiving an estimated observation quantity at the subsequent sampling time of an input state quantity and determining a normalized estimated value in which an estimated value is normalized by an estimated observation quantity at the subsequent sampling time, and a state quantity transformation unit for transforming the input state quantity at the subsequent sampling time to the output state quantity at the subsequent sampling time in accordance with a non-linear operation based on the a normalized estimated value determined in the non-linear characteristic reproducing unit.

Abstract: An exhaust gas dilution apparatus 10-2 is the same form multi-venturi type comprising a rectifier 11, divider 12, exhaust chamber 14, dilution tunnel 15, and a divider pipes 13t on the dilution side of a tunnel 15 side. All divider pipes 13 are provided with a venturi 21 having the same performance inserted in the same position, to measure the flow rate in the dilution tunnel and the flow rate on the exhaust pipe side. The opening of the shutter 19 provided in the exit of the exhaust chamber 14 is controlled so that the two flow rates are equivalent.

Abstract: In a jaw movement simulator in which an upper jaw model patterned after an upper jaw and a lower jaw model patterned after a lower jaw are mounted, and the lower jaw model is relatively moved with respect to the upper jaw model. A jaw movement simulation system causes the jaw movement simulator to reproduce a movement of the jaw of a test subject in accordance with data obtained through imaging a movement of the jaw of the test subject. The lower jaw model is fixed on an operating plate having 6 degree of freedom by parallel mechanism, and is moved on the basis of data obtained through a movement of the jaw of the human body, thereby simulating a movement of the jaw with great accuracy.

Abstract: To enable extraction of one specific optical fiber from a plurality of optical fibers at remote sites. An environment variable apparatus is mounted to provide a temperature difference at a predetermined position of an optical fiber. An environment variable apparatus is mounted to detect scattered light of light incident on the optical fiber through one end thereof so as to extract a target optical fiber from a large member of optical fibers. Further, synchronous devices are mounted to transmit from the environment variable apparatus to the extracting apparatus a message in that the temperature difference is given to the optical fiber, and transmit from the extracting apparatus to the environment variable apparatus a decision signal as to whether or not the optical fiber is to be extracted.

Abstract: A fuel consumption measuring device is provided with a flow meter which is mounted on a fuel feeding passage extending from a fuel tank to an engine, wherein a return fuel which is not consumed by the engine is returned to a passage in the downstream of the flow meter through a return passage so as to measure a fuel consumption in the engine by the flow meter. The fuel feeding passage is provided with a pressure reducing valve for maintaining a confluence of the fuel feeding passage and the return passage at atmospheric pressure. Therefore, the fuel consumption measuring device has high measuring accuracy and high security, and is suitable for a vehicle.

Abstract: The present invention provides a carrier which enables rapid, accurate positioning of work, while providing registration of the subsequent work piece. The carrier becomes at least a part of a processing table and includes sliding suction plates for holding and moving the work pieces between a registration station for positioning the work piece on a registration table and a processing station for processing the work piece while in a airtight chamber on the processing table. The carrier is characterized by a sealing mechanism for sealing the gap between the remaining sections of the processing table and the sliding suction plates when the sliding suction plates are located in the processing station. As a result, the airtight operation in the processing station is possible, and the carriage moves only the sliding suction plates. The carriage moves the work piece between the registration station and the processing station at a high speed.

Abstract: Throttle predictive controller in an engine tester includes an operation pattern generator (5); an operational processing unit (4) consisting of a throttle predictive angle calculation part (1), a throttle angle-corresponding to acceleration calculation part (2) and an adder (3); a dynamometer controller (6); a throttle amplifier (9); a throttle actuator (10); a dynamometer (11); and a tachometer (12). The operation pattern generator inputs a set revolution speed signal (n) to the throttle predictive angle calculation part, the throttle angle-corresponding to acceleration calculation part and the throttle amplifier, and inputs a set torque signal (T) to the throttle predictive angle calculation part and the dynamometer controller.

Abstract: A miniaturized inexpensive vibration generator using rotary bodies having unbalanced weights with no absolute encoders provided on the rotary body driving means. Rotary bodies having unbalanced weights are disposed in an opposed state. Members to be detected are fixed to the rotary bodies so that the members to be detected have a predetermined positional relation with the relative weights and rotation detectors are provided fixedly in the positions close to the loci of the rotational movements of the members to be detected, and adapted to output signals representative of what are detected thereby in the form of pulses each of which is generated every time each of the members to be detected passes the relative rotation detector, i.e., every time each member to be detected is revolved 360.degree., a phase difference computing element computes a phase difference between the unbalanced weights on the basis of the signals from the rotation detectors.

Abstract: An apparatus for controlling output shaft torque of an engine in an engine tester by correction inertia of the dynamometer, comprising an operation pattern generator, a dynamometer processing unit, a dynamometer controller, and a dynamometer. The torque signal fed back to the dynamometer controller is not from the shaft torque meter but is of the dynamometer torque, and is not affected by the torsional vibration, and is controlled with good stability. Further, no time lag caused by the inertia of the dynaomometer develops in controlling the torque of the output shaft. Therefore, the torque of the output shaft can be controlled with high response and accuracy.

Abstract: A measuring apparatus of a volume of a fluid injected from an injection valve. A fluid having a volume V is injected from an injection valve into an injection chamber containing a fluid, same kind as that of the injected fluid, and having a predetermined pressure and volume. A back pressure chamber is formed separately in the injection chamber with a parting plate having an effective under-pressure area A and a bellow sealed and connected, at one end thereof, to the parting plate. In the back pressure chamber a non-contact displacement sensor having a thermal compensation device is disposed with a clearance from the parting plate and the bellow and the back pressure chamber is filled with another fluid having same pressure as that of fluid in the injection chamber. By the injection of the fluid into the injection chamber, the parting plate moves toward the non-contact displacement sensor by a distance S which is equal to V/A. Distance S is detected by the non-contact displacement sensor.

Abstract: A measuring device for measuring a fuel injection quantity comprising fuel volume sensing means including a fuel injection chamber connected to a fuel injection valve and receiving the fuel injection quantity therefrom, a back pressure chamber which faces the fuel injection chamber, bulkhead means located between the fuel injection chamber and the back pressure chamber as an intercept therebetween and responsive to the fuel injection quantity for generating a displacement, sensing means for sensing the displacement of the bulkhead means, pressure means for holding a pressure of the back pressure chamber to be of a constant value, fuel injection quantity computing means responsive to the sensing means for determining a fuel injection quantity, discharging means including fuel discharging means for discharging the injected fuel quantity from the fuel injection chamber to its exterior, discharging quantity computing means responsive to the fuel injection quantity computing means for computing a discharged quanti

Abstract: An instantaneous torque determining apparatus for obtaining the instantaneous torque value continuously of a shaft rotating at a high speed. The apparatus includes a pair of spaced gears mounted on the shaft, a torque detector having a pickup for each gear, a set of voltage comparators, a gate control circuit, an AND circuit, and a clock pulse generator. Further, the apparatus also includes a delay circuit for receiving pulses from a voltage comparator, a subtraction counter which receives a delayed pulse as a subtractor starting instruction, and a set of first and second ratio multipliers forming a counting circuit loop with the counter. First and second latch circuits store the counted value outputs and apply such outputs as an input to another counter and to a Digital-Analogue transducer. The pick-ups of the torque detectors are respectively arranged to face the gear to provide voltage signals in pulse form when the shaft rotates and each tooth of the gear passes in front of its respective pick-up.

Abstract: The present invention relates to a gear mesh testing instrument in which the transmission error occurring between the two gears to be tested (the driving gear and the driven gear) is measured while both gears are rotating while intermeshed with each other. A pulse generator is connected to the rotating shaft of the driving gear, and of the driven gear, respectively, so as to produce two pulse signals having frequencies proportional to the number of the rotation of the gears. Then, the two pulse signals are introduced into the gear number compensating circuit so as to be converted into two pulse signals having a same frequency. The transmission error is proportional to the phase difference between the two pulse signals having the same frequency, which phase difference is proportional to the ratio of the phase difference time between the two pulse signals to the period of pulse signal.