JTEKT Patente

Zusammenfassung wird geladen …

A PLC communication system includes a PLC (20); a plurality of devices (152, 153, 154); three or more communication processing nodes (142, 143, 144) that are provided respectively in the PLC (20) and the devices (152, 153, 154) to allow the PLC (20) to communicate with each of the devices (152, 153, 154); and a plurality of communication lines (111, 112) that connect the communication processing nodes (142, 143, 144) to each other to allow data communication. The PLC (20) detects an incommunicable state between two of the communication processing nodes (142, 143, 144). The PLC communication system further includes a display device (30), and in a case where there are a plurality of types of incommunicable states detected by the PLC (20), the display device (30) displays a portion where communication lines constituting the incommunicable states among the plurality of communication lines overlap with each other, as a line failure portion.

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

When a vehicle is quickly steered while the vehicle is travelling at an extremely low speed, a load on an in-vehicle power supply is reduced without deteriorating a steering feeling by reducing a motor driving current. A steering speed (¸'h) is compared with a threshold (s) (step S4). When the steering speed (¸h') is lower than the threshold (s), the process proceeds to step S6. In step S6, a voltage value (V0) of a battery power supply, which is used as a prescribed value, is set as a limit voltage (Vmax) in order to reduce a motor consumption current. When the steering speed (¸h') is higher than the threshold (s), a value "V0/n" lower than the prescribed value (V0) is set as the limit voltage (Vmax) to reduce a consumption current when the steering wheel is steered without driving. "n" is "delay adjustment parameter", and is a real number that exceeds 1.

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

There is provided an urging mechanism (B) that elastically urges a second end portion (23) of a worm shaft (20) that is supported so as to be pivotable about a first end portion (22). The urging mechanism (B) is configured to adjust a backlash between the worm shaft (20) and a worm wheel (21) by elastically urging the second end portion (23) in a perpendicular direction (Z1) that is perpendicular to a direction (Y1) in which an inter-axis distance (D1) between the worm shaft (20) and the worm wheel (21) increases and decreases, in a state where increases and decreases in the inter-axis distance (D1) is prevented.

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

A damping control unit (62) sets a damping torque command value (TD*) that corresponds to a steering angular velocity (ωh) when a direction of a detected steering torque (Th) is a turning direction, a magnitude (absolute value) of the detected steering torque (Th) is larger than or equal to a first threshold (A1) (A1 ≥ 0), a direction of the steering angular velocity (ωh) is a returning direction and a magnitude (absolute value) of the steering angular velocity (ωh) is higher than or equal to a second threshold (B1) (B 1 ≥ 0). An addition unit (63) adds the damping torque command value (TD*) generated by the damping control unit (62) to a basic assist torque command value (TAO*) set by a basic assist torque command value setting unit (61). <img class="EMIRef" id="144778487-iaf01" />

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

A cartridge seal for a wheel hub rolling bearing unit includes first and second metal cores (11, 13) having a L-shaped cross-section. First and second elastic seals (12, 14) are attached to the cores (11, 13). The first elastic seal (12) has a lip (42, 43) in sliding contact with an outer peripheral face of a cylindrical portion (31) of the second metal core (13) and the second elastic seal (14) has a lip (53) in sliding contact with an inner peripheral face of an axially outer-side portion (23) of a cylindrical portion (21) of the first metal core (11). The first elastic seal (12) further has a first cylindrical portion (45) in contact with an inner peripheral face of an axially inner-side portion of the cylindrical portion (21) of the first metal core (11) and a second cylindrical portion (46) in contact with an outer peripheral face of an axially outer-side portion of the cylindrical portion (21) of the first metal core (11). The first and second cylindrical portions (45, 46) are connected to each other via connecting pieces (47) inserted into through-holes (24) formed in and passing radially through an axially intermediate portion of of the cylindrical portion (21) of the first metal core (11) at predetermined intervals in a circumferential direction.

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

A pump rotation speed correcting unit (63) includes a valve opening degree command differential value computing unit (71), a pump rotation speed correction value computing unit (72), and a correction value adding unit (73). The valve opening degree command differential value computing unit (71) computes a temporal differential value of a valve opening degree command value that is set by a valve opening degree command value setting unit (52). The pump rotation speed correction value computing unit (72) computes a correction value of a pump rotation speed command value on the basis of the valve opening degree command differential value. The correction value adding unit (73) adds the pump rotation speed correction value to the pump rotation speed command value that is set by the pump rotation speed command value setting unit (62).

An acceleration sensor is attached to a rack housing. A FFT processing unit converts a signal output from the acceleration sensor, which is a time-domain signal, into a frequency-domain signal. An inverse input vibration component extraction unit extracts a signal, of which the frequency (f) falls within a predetermined range (fL ≤ f ≤ fH (fH > fL)) and of which the power density (p) falls within a predetermined range (pL ≤ ρ ≤ pH (ρH > pL)), from the frequency-domain signal obtained by the FFT processing unit. An IFFT processing unit converts the frequency-domain signal extracted by the inverse input vibration component extraction unit into a time-domain signal (estimated inverse input vibration). <img class="EMIRef" id="144778481-iaf01" />

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

In a wheel support device, a through-hole (41) is formed so as to pass through a hub spindle (2) in its axial direction, an outer ring shaft portion (33b) passed through the through-hole (44) is formed in the outer ring (33), a first connecting portion (44a,44b) of which the inner diameter gradually increases toward an axial outer side is formed in the inner periphery of the hub spindle, which defines the through-hole (41), a second connecting portion (45a,45b) that is arranged radially inward of the first connecting portion (44a,44b) and of which the outer diameter gradually increases toward the axial outer side is formed in the outer ring shaft portion (33b) so as to correspond to the first connecting portion (44a,44b), and the first connecting portion (44a,44b) and the second connection portion (45a,45b) have spline teeth that mesh with each other.

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

A rack shaft supporting device (40) includes a support yoke (50), a plug (60), an intermediate component (70), a torque generation spring (100), and rolling elements (80). The plug (60) has a plug end portion (65) and plug cam faces (65A) formed in the plug end portion (65). The intermediate component (70) is arranged between the plug (60) and the support yoke (50) in a state where the intermediate component (70) is rotatable relative to the rack housing (21) and movable relative to the rack housing (21) in a pushing direction. The intermediate component (70) has an intermediate opposed portion (72) opposed to the plug end portion (65) and intermediate cam faces (72A) opposed to the plug cam faces (65A). The rolling elements (80) are arranged between the plug cam faces (65A) and the intermediate cam faces (72A), and make contact with each of the plug cam faces (65A) and the intermediate cam faces (72A).

Zusammenfassung wird geladen …