Abstract: An A/D converter includes a noise detector for generating a noise detection signal when it detects noise in an A/D conversion reference voltage; an A/D operation controller for generating a bit-shift signal in response to the noise detection signal; and an A/D conversion module for discarding an A/D conversion resultant bit affected by noise in response to the bit-shift signal, for holding the remaining A/D conversion resultant bits, and for restarting the A/D conversion from the discarded A/D conversion resultant bit after the noise becomes negligible. The A/D converter can obtain reliable A/D conversion data against the noise in the A/D conversion reference voltage without increasing the circuit scale so much.

Abstract: An A/D converter includes a noise detector for generating a noise detection signal when it detects noise in an A/D conversion reference voltage; an A/D operation controller for generating a bit-shift signal in response to the noise detection signal; and an A/D conversion module for discarding an A/D conversion resultant bit affected by noise in response to the bit-shift signal, for holding the remaining A/D conversion resultant bits, and for restarting the A/D conversion from the discarded A/D conversion resultant bit after the noise becomes negligible. The A/D converter can obtain reliable A/D conversion data against the noise in the A/D conversion reference voltage without increasing the circuit scale so much.

Abstract: A microcomputer comprises a selecting unit for selecting one of a plurality of clock signals generated by a plurality of clock generating sources according to a selection instruction from a central processing unit or CPU, a clock generation stop unit, responsive to a stop instruction to stop generation of a clock signal other than the selected clock signal from the CPU, for causing a corresponding clock generating source to stop the generation of the clock signal, and an unauthorized stop process detecting unit, responsive to a stop instruction to stop the generation of the selected clock signal from the CPU, for determining that the CPU has provided an instruction to perform an unauthorized process of causing a selected clock generating source to stop the generation of the selected clock signal.

Abstract: The detector includes the plug for connecting the personal computer through a cable, battery power supply which provides a constant power supply, and the MCU which receives a specific potential from the personal computer when the later is connected.

Abstract: A primary object of the present invention is to provide a static-type mixing and stirring device which allows for reduction in size of the device and for substantial reduction in the costs of manufacturing the device, while at the same time lowering pressure loss and enhancing the mixing and stirring performance of the device. To achieve the object of the present invention, the static-type mixing and stirring device comprises a cylindrical case body, a plural number of disk-shaped elements—equipped with plural kinds of holes at prescribed intervals—combined and fitted in sequence into the case body, and joint metals removably fitted to the ends of the inlet and outlet of the body case.

Abstract: An electric power system including a power source, a load, a battery discharging power to the load and accumulating power from the power source, a power detector detecting power supplied from the power source, a power converter converting power charged to and discharged from the battery, and a power controller controlling power converted by the power controller. When power supplied to the load from the power source exceeds an upper limit, the power converter is controlled by a current command calculated from deviation between the supplied power and the upper limit to discharge power to the load from the battery. When the power is below a charge threshold of the battery, the power converter is controlled by a charge command to supply a power to the battery from the power source.

Abstract: A microcomputer reset device includes a switching circuit for comparing, after a reset of a CPU is released during power-up, a reference voltage Vref with a second divided voltage Vd2 which is proportional to a supply voltage and is adjusted by the CPU, and for switching, when the second divided voltage Vd2 exceeds the reference voltage Vref, a clock source of the CPU from an internal clock signal to an external clock signal. This makes it possible to solve a problem of a conventional microcomputer reset device in that it is not unlikely that the microcomputer starts its operation before its reset has been completed, which hinders the normal operation of the microcomputer.

Abstract: A charge and discharge apparatus for electric power storage means has an AC power source, a transforming apparatus, which comprises a primary winding connected to the AC power source, and plural secondary windings, and plural electric power converters comprising plural AC sides, respective ones of which are connected to a respective one of the plural secondary windings, and plural DC sides, respective ones of which are connected to a respective one of the plural electric power storage means.

Abstract: A microcomputer includes an operation circuit for performing an operation using a reference voltage. A reference voltage input terminal receives the reference voltage from an external device. An output circuit outputs an output signal from the microcomputer to an external destination. The level of the output signal depends on the reference voltage input through the reference voltage input terminal.

Abstract: A sine wave input converter provided with a phase sequence computation unit which inputs two line voltages or two phase voltages of the three phase ac power supply, computes the phase of a sine wave voltage of one of these two inputs, and determines on the basis of computation using these two input voltages and the phase whether the phase sequence is positive or antiphase, which is determined depending on whether the result of computation assumes a constant value, or becomes a sine wave oscillating between positive and negative values. Power supply interruption can be determined from the same computation result.

Abstract: Oscillating circuitry built in integrated circuitry (1) comprises a ring oscillator (31) for generating a first clock, an external oscillator (40) capable of generating a second clock in either one of two oscillating modes which is determined according to an external circuit (12 and 13, or 6 through 8) connected to terminals (2 and 3) thereof, and an internal clock selection circuit (41) which delivers the first clock as an internal clock to the integrated circuitry (1) just after the integrated circuitry (1) is activated or reset, stops the delivery of the first clock and simultaneously furnishes a signal held at a logic high level as the internal clock in response to a control signal for instructing a selection of the second clock, and then determines whether or not the external oscillator (40) is generating the second clock properly, and which furnishes the second clock as the internal clock when it determines that the external oscillator (40) is generating the second clock properly.

Abstract: A bladder clamping device for a tire vulcanizing press is disclosed in which a lower ring on which a lower end portion of a bladder is fitted remains fixed to allow the lower end portion of the bladder to be clamped in a condition in which it has been fitted firmly by an operator. The bladder clamping device for a tire vulcanizing press comprises a lower ring and a clamping ring located on the inner side and the outer side relative to each other at a central portion of a lower mold of the tire vulcanizing press for cooperatively clamping a lower end portion of a bladder, and a hydraulic cylinder having a rod connected to the clamping ring for moving the clamping ring upwardly and downwardly relative to the lower ring.

Abstract: A motor controller includes a shaft torsion vibration estimator for estimating a shaft torsion vibration between a motor and a mechanical load and a shaft torque estimator for estimating a shaft torque acting upon a motor shaft, wherein a vibration in a mechanical load driving system is suppressed by utilizing an estimated shaft torsion torque value calculated by the shaft torsion vibration estimator and an estimated shaft torque value calculated by the shaft torque estimator in addition to a detected motor speed value. Using such a system stable speed control having improved response can be achieved since higher order vibration modes can be suppressed without deteriorating its shaft torsion vibration without deteriorating its shaft torsion vibration suppression performance by combining the shaft torsion vibration estimator and the shaft torque estimator.

Abstract: A die changer truck for use with a tire vulcanizer, including a self-propelled chassis adapted to halt in front of the tire vulcanizer, a swiveling table rotatably mounted on the self-propelled chassis, two mounting sections for respectively mounting two die assemblies, and two carrier units for respectively carrying two bladder assemblies. The two mounting sections and the two carrier units are provided as two sets on the swiveling table. The two sets are selectively positioned by rotation of the swiveling table. Accordingly, the carriage and change of not only the die assemblies but also the bladder assemblies with respect to the tire vulcanizer can be automated.

Abstract: A vulcanizing mold setting apparatus for setting a vulcanizing mold assembly (21) on the platen (6) of a tire vulcanizing apparatus (1) comprises: a mold transfer mechanism (54) comprising a mold carriage (49) for horizontally moving the vulcanizing mold assembly (21) to and away from the tire vulcanizing machine (1), a pair of guide units (41) disposed respectively on the opposite sides of the platen (6), and a pair of mold supporting units (24) disposed respectively on the opposite sides of the platen (6) behind the guide units (41) to support the vulcanizing mold assembly (21) above the platen (6); a pair of lifting mechanisms (27) for vertically moving the mold supporting units (24) to place the vulcanizing mold on the platen (6); a centering mechanism (29) for centering the vulcanizing mold assembly (21) on the platen (6); and clamping members (26) for fastening the fixed mold (7) of the vulcanizing mold assembly (21 ) to the platen (6) after the vulcanizing mold assembly (21) has been centered on the pl

Abstract: A brushless motor comprises a rotor which is rotatable on an axis of the brushless motor and which include permanent magnets arranged circumferentially thereon, an output member connected to the rotor to rotate with the rotor, and a stator which includes electro-magnetic coils energized in order to rotate the rotor, and has a first space which receives the output member therein and a second space which extends from the first space to the outside of the stator so that an output power of the brushless motor is transmitted from the output member to the outside of the brushless motor through the second space.

Abstract: Both selection information for designating one of analog signal input terminals and timing information for designating the timing for starting A/D conversion with respect to the selected analog signal input terminal are inputted into a microcomputer which incorporates an A/D converter. The selection information for A/D conversion and a conversion start signal are generated in response to the inputted selection information and timing information so that any of analog signals varying with the time to a relatively large extent can be converted into digital signal.

Abstract: A loop control apparatus for controlling general process control such as control of the temperature of water supply comprises an interpreter for interpreting input information in the form of trains of characters to provide instrument information and a compiler for interpreting the train of character and compiling therefrom operational equation information. The trains of characters are inputted from an external general purpose computer as a man-machine interface through a serial interface provided within the loop control apparatus, and are subjected to word analysis and syntax analysis by the interpreter and the compiler. Loop control function information produced through the word and syntax analysis is stored into a memory means. Once the instrument design and the operational design have been completed, the interface computer is not needed and can thus be used for other jobs not related to the system under control.

Abstract: A PWM inverter includes a plurality of arms connected in parallel with a d.c. power source. Each arm is constituted by an upper arm and a lower arm each having a switching element. A plurality of switching control signals are continuously and alternately applied to one and the other of the two switching elements constituting the same arm respectively. In the PWM inverter, shunt resistors are connected between a minus terminal of the d.c. power source and the lower arms respectively. The PWM inverter further comprises a waveform command generating circuit generating commands representative of current waveforms to be supplied to a load, a carrier wave generating circuit and sample-hold circuits. Each of the sample-hold circuits samples and holds a terminal voltage of the associated shunt resistor in synchronism with the period of the carrier wave generated from the carrier wave generating circuit and at specific timing in a conduction period of the associated switching element.

Abstract: A digital servo-control system used for driving a machine with a plurality of drive shafts having a digital type multi-axis position control unit, provided in common to all of the drive shafts, for computing a torque command value for each drive shaft on the basis of a position detection value detected by a position detector provided for each drive shaft and a position command value for each drive shaft, and torque control units, respectively provided in correspondence to a plurality of motors adapted to drive the respective drive shafts, for controlling output torque of a corresponding motor in accordance with the computed torque command value.