摘要:
When a PWM signal generating unit (10) sets a duty D of a PWM signal based on command signals (10c), the PWM signal generating unit (10) sets a phase difference φ between each of the PWM signals based on a relation formula of φ (degree)=360 (degree)×D (%)/100 (%), and generates and outputs first PWM signals (10a) and second PWM signals (10b) in which the duty is D (%) and the phase difference is φ (degree). The first PWM signals (10a) and the second PWM signals (10b) are respectively supplied to a first load driving circuit (21) and a second load driving circuit (22) to operate a first motor fan (3) and a second motor fan (4) by a PWM control, respectively.
摘要:
An automobile servomotor controller includes a master control unit having a master control circuit for transmitting a designation signal and a slave unit having a motor and a control circuit which controls driving of a motor by outputting an operation signal to a driving device depending upon said designation signal. The slave unit is constructed by a same feedback control unit having a non-feedback control unit for inhibiting the operation of the motor until a target is changed by an input of a new designation signal with a target reached state and a feedback control unit for driving the motor to reach a target state by detecting a present position value with a position detecting device, and a control inhibiting signal for inhibiting the feedback control is individually provided to the designation signal transmitted from the master control circuit to the non-feedback control unit.
摘要:
A driving control device for an actuator comprises a driving device to drive an actuator having an electric motor (30) and a driving control device (50) to control the rotation of the electric motor (30) by controlling the driving device. The driving control device includes an H bridge circuit constructed by four switching semiconductor elements (Tr1 to Tr4), and rotates the electric motor in normal and reverse directions by turning on and turning off the switching semiconductor elements (Tr1 to Tr4). The driving control device (50) conducts to activate and to stop the electric motor (30) by applying a PWM signal to the switching semiconductor elements (Tr3 and Tr4) constructing the lower arm of the H bridge circuit (51).
摘要:
Provided are a tripod constant velocity joint, and a method and a device for assembling the joint. The opening of a through-hole formed in an inner member of the tripod constant velocity joint has formed therein a tapered, reduced diameter section having a diameter tapered from the opening toward the inside. A first annular groove is formed in the side wall of a driving power transmission shaft, and a clip serving as an engaging member is engaged with the first annular groove. A second annular groove is formed in the inner wall of the through-hole in the inner member. In inserting the driving power transmission shaft through the through-hole in the inner member, the tapered, reduced diameter section guides the shaft in such a manner that the clip is contracted toward the bottom surface of the first annular groove. The clip expands and contracts due to the elasticity thereof when the positions of the first annular groove and the second annular groove coincide with each other.
摘要:
[Object] An object of the present invention is to provide a substrate support structure which can prevent a crush rib from damaging components other than a substrate and brings excellent workability.[Means to Solve] In a substrate support structure, a box-shaped resinous case 2 provided with a holding space section 23 is separated into a first case 21 and a second case 22, and a substrate 3 is housed in the holding space section 23. A first crush rib 41 and a second crush rib 42 are provided in the second case 22, and press and fix the substrate 3 to first case 21 by reaction force that is generated by being pressed against the substrate 3 and crushed when the both cases 21, 22 are joined together. A first guide 51 is provided in the first case 21, and guides the first crush rib 41 to the substrate 3 mounted in the first case 21 when the both cases 21, 22 are joined together. A second guide 52 is provided in the first case 21, and guides the second crush rib 42 to the substrate 3 when the both cases 21, 22 are joined together.
摘要:
A mechanical joint having at least first and second joint elements arranged in contact with each other. A first surface of the first joint element abuts a second surface of the second joint element and is at least partially provided with at least one optically emitting module. The respective abutting second surface of the second element is provided, at least in part, with at least one optically receiving module.
摘要:
A lighting failure detector for a luminaire which ascertains that a lamp is lit at night and indicates the result of detection includes a phase difference detector circuit for ascertaining the lighting of the lamp through voltage and current applied to the lamp, a timer operating in response to an output signal from the phase difference detector circuit, and an indicator operated in response to a time-up signal from the timer.
摘要:
[Object] An object of the present invention is to provide a substrate support structure which can prevent a crush rib from damaging components other than a substrate and brings excellent workability.[Means to solve] In a substrate support structure, a box-shaped resinous case 2 provided with a holding space section 23 is separated into a first case 21 and a second case 22, and a substrate 3 is housed in the holding space section 23. A first crush rib 41 and a second crush rib 42 are provided in the second case 22, and press and fix the substrate 3 to first case 21 by reaction force that is generated by being pressed against the substrate 3 and crushed when the both cases 21, 22 are joined together. A first guide 51 is provided in the first case 21, and guides the first crush rib 41 to the substrate 3 mounted in the first case 21 when the both cases 21, 22 are joined together. A second guide 52 is provided in the first case 21, and guides the second crush rib 42 to the substrate 3 when the both cases 21, 22 are joined together.
摘要:
A reservation, where the number of days from a date of reservation to a date of use exceeds the number of days that correspond to a credit period, is accepted as a reservation where settlement by a credit card is designated while maintaining the safety of settlement of usage fee. When a reservation where the number of days from today to a date of use exceeds the number of days of a credit period is requested, an information processing apparatus checks validity of the designated credit card. At this time, if the designated credit card can be confirmed to be valid, the information processing apparatus accepts the reservation and stores information of the designated credit card in a storage means. The information processing apparatus checks the validity of the designated credit card on or after a date on which the number of days from the date to a date of use of a service whose reservation is accepted is the number of the credit days on the basis of the information stored in the storage means. At this time, if the credit card cannot be confirmed to be valid, the information processing apparatus outputs information indicating that a settlement method is changed to a method different from a settlement method performed by using the designated credit card.