Abstract: A motor control device includes a first control unit and a second control unit. The first control unit includes an issuing unit that issues a command that schedules a next operation of a motor according to an instruction from a controller. The second control unit includes a receiving unit that receives the command, a detecting unit that detects a state of the motor, a determining unit that makes a determination as to whether to drive the motor to perform the operation according to the state detected by the detecting unit, and an executing unit that drives the motor to perform the operation scheduled by the command as determined by the determination.

Abstract: An exhaust treatment unit treats an exhaust gas from an engine of a work vehicle. The exhaust treatment unit includes a diesel particulate filter device, a selective catalytic reduction device, and a connection pipe. The diesel particulate filter device treats the exhaust gas. The selective catalytic reduction device treats the exhaust gas. The connection pipe connects the diesel particulate filter device and the selective catalytic reduction device. The connection pipe includes a plurality of spherical joints, a first pipe part on a first end, and a second pipe part on a second end. The plurality of spherical joints include a first spherical joint mounted between the first pipe part and the diesel particulate filter device, a second spherical joint mounted between the second pipe part and the selective catalytic reduction device, and a third spherical joint mounted between the first and second pipe parts.

Abstract: A motor control device performs drive control of a motor connected to an object. The motor control device includes a rotation detection unit that detects rotation of the motor and outputs a detection signal, a counter unit that receives the detection signal from the rotation detection unit and outputs a count based on the received detection signal, and an error detection unit that receives counts from the counter unit at intervals of a reference period, computes a difference between a present count received from the counter unit and a previously received count, and detects that an error arises in the rotation detection unit when the difference is continuously less than a reference value.

Abstract: Provided is a conveyance device that includes: a conveyance unit configured to convey a conveyance object; a motor configured to drive the conveyance unit; a sensor configured to detect a position of the conveyance object; an instruction unit configured to generate an instruction signal for conveying the conveyance object to a target position; and a control unit configured to control the motor by performing a speed feedback control and control the motor so as to cancel a delay between a time when the position of the conveyance object is detected and a time when the speed feedback control is reflected on the motor.

Abstract: An exhaust treatment unit treats an exhaust gas from an engine of a work vehicle. The exhaust treatment unit includes a diesel particulate filter device, a selective catalytic reduction device, and a connection pipe. The diesel particulate filter device treats the exhaust gas. The selective catalytic reduction device treats the exhaust gas. The connection pipe connects the diesel particulate filter device and the selective catalytic reduction device. The connection pipe includes a plurality of spherical joints, a first pipe part on a first end, and a second pipe part on a second end. The plurality of spherical joints include a first spherical joint mounted between the first pipe part and the diesel particulate filter device, a second spherical joint mounted between the second pipe part and the selective catalytic reduction device, and a third spherical joint mounted between the first and second pipe parts.

Abstract: A mixing device of an exhaust aftertreatment device includes: an elbow pipe attached to an outlet pipe of a filter device; a straight pipe connected to a downstream side of the elbow pipe to extend in a direction intersecting an axial line of the outlet pipe; and an injector attached to the elbow pipe, the injector injecting a reductant aqueous solution into inside the elbow pipe toward the straight pipe. The elbow pipe includes: an inlet connected with the outlet pipe; an outlet connected with the straight pipe; a direction-changing section provided between the inlet and the outlet; and an injector attachment provided outside the direction-changing section and attached with the injector. The injector attachment is offset toward the outlet. The direction-changing section includes a first bulging portion provided by bulging outward a portion thereof opposite to the injector attachment.

Abstract: A motor control device performs drive control of a motor connected to an object. The motor control device includes a rotation detection unit that detects rotation of the motor and outputs a detection signal, a counter unit that receives the detection signal from the rotation detection unit and outputs a count based on the received detection signal, and an error detection unit that receives counts from the counter unit at intervals of a reference period, computes a difference between a present count received from the counter unit and a previously received count, and detects that an error arises in the rotation detection unit when the difference is continuously less than a reference value.

Abstract: A motor control apparatus controls driving a direct current motor according to a drive condition set by a stepping motor control unit. The motor control apparatus includes a storage unit in which the drive condition is written by the stepping motor control unit; and a direct current motor control unit that reads the drive condition from the storage unit and controls driving the direct current motor based on the drive condition.

Abstract: Provided is a conveyance device that includes: a conveyance unit configured to convey a conveyance object; a motor configured to drive the conveyance unit; a sensor configured to detect a position of the conveyance object; an instruction unit configured to generate an instruction signal for conveying the conveyance object to a target position; and a control unit configured to control the motor by performing a speed feedback control and control the motor so as to cancel a delay between a time when the position of the conveyance object is detected and a time when the speed feedback control is reflected on the motor.

Abstract: A motor control device includes a first control unit and a second control unit. The first control unit includes an issuing unit that issues a command that schedules a next operation of a motor according to an instruction from a controller. The second control unit includes a receiving unit that receives the command, a detecting unit that detects a state of the motor, a determining unit that makes a determination as to whether to drive the motor to perform the operation according to the state detected by the detecting unit, and an executing unit that drives the motor to perform the operation scheduled by the command as determined by the determination.

Abstract: A mixing device of an exhaust aftertreatment device includes: an elbow pipe attached to an outlet pipe of a filter device; a straight pipe connected to a downstream side of the elbow pipe to extend in a direction intersecting an axial line of the outlet pipe; and an injector attached to the elbow pipe, the injector injecting a reductant aqueous solution into inside the elbow pipe toward the straight pipe. The elbow pipe includes: an inlet connected with the outlet pipe; an outlet connected with the straight pipe; a direction-changing section provided between the inlet and the outlet; and an injector attachment provided outside the direction-changing section and attached with the injector. The injector attachment is offset toward the outlet. The direction-changing section includes a first bulging portion provided by bulging outward a portion thereof opposite to the injector attachment.

Abstract: An electronic device including a first motor, the electronic device including: a first movable body that is driven to move by the first motor; a detecting unit that detects a signal according to rotation of the first motor or movement of the first movable body; an analyzing unit that performs frequency analysis of the signal and generates an analysis result with respect to each frequency; and a determining unit that determines presence or absence of malfunction of the first motor or the first movable body based on an analysis result of a first frequency preset with respect to the first motor or the first movable body out of frequencies, and determines presence or absence of malfunction of a part other than the first motor and the first movable body on the basis of an analysis result of a second frequency preset with respect to the part out of the frequencies.

Abstract: A disclosed to-be-transferred object length measurement device includes a first rotating body; a passage detection unit detecting a passage of the to-be-transferred object; a rotation amount measurement unit measuring a rotation amount of the first rotating body in a first measurement period; a second rotating body feeding the to-be-transferred object; a speed detection unit detecting a first feeding speed and a second feeding speed of the to-be-transferred object; and a calculation unit calculating a feeding distance of the to-be-transferred object per a predetermined rotation amount of the first rotating body based on the first feeding speed, and further calculating a length of the to-be-transferred object based on the rotation amount of the first rotating body in the first measurement period, the feeding distance, and the second feeding speed of the to-be-transferred object in the second measurement period.

Abstract: A pulse generating device includes a rotatable disc having a plurality of patterns that are formed on a surface of the rotatable disc in a circumferential direction of the rotatable disc, and three pulse generators to each detect the plurality of patterns formed on the rotatable disc and to respectively generate three pulse signals each corresponding to a rotational speed of the rotatable disc based on the detected patterns. The three pulse generators are evenly spaced at intervals of 120 degrees of angle with respect to a rotational axis of the rotatable disc in the circumferential direction of the rotatable disc.

Abstract: Time information indicates time required for reflecting a speed control indicating value actually on the rotation speed of the motor, the speed control indicating value being read by a motor driving part and then, being reflected on the rotation speed of the motor by the motor driving part. the speed control indicating value is generated based on the time information and the rotation speed information. The speed control indicating value is read at a period which is based on the time information for actually driving the motor.

Abstract: A detecting device includes: a measuring unit that measures a rotating speed of at least one of connected gears; a calculating unit that calculates frequency characteristics for the rotating speed measured by the measuring unit; a detecting unit that detects a period of fluctuation of the rotating speed measured by the measuring unit; a determining unit that determines whether the connected gears include a damaged gear by using the frequency characteristics calculated by the calculating unit; and an identifying unit that, if the determining unit determines that the connected gears include a damaged gear, identifies a gear whose rotation period corresponds to the period detected by the detecting unit as the damaged gear among the connected gears.

Abstract: An electronic device including a first motor, the electronic device including: a first movable body that is driven to move by the first motor; a detecting unit that detects a signal according to rotation of the first motor or movement of the first movable body; an analyzing unit that performs frequency analysis of the signal and generates an analysis result with respect to each frequency; and a determining unit that determines presence or absence of malfunction of the first motor or the first movable body based on an analysis result of a first frequency preset with respect to the first motor or the first movable body out of frequencies, and determines presence or absence of malfunction of a part other than the first motor and the first movable body on the basis of an analysis result of a second frequency preset with respect to the part out of the frequencies.

Abstract: A pulse generating device includes a rotatable disc having a plurality of patterns that are formed on a surface of the rotatable disc in a circumferential direction of the rotatable disc, and three pulse generators to each detect the plurality of patterns formed on the rotatable disc and to respectively generate three pulse signals each corresponding to a rotational speed of the rotatable disc based on the detected patterns. The three pulse generators are evenly spaced at intervals of 120 degrees of angle with respect to a rotational axis of the rotatable disc in the circumferential direction of the rotatable disc.