Unlock instant, AI-driven research and patent intelligence for your innovation.

Vehicle travel state control device and vehicle travel state control method

A driving state and control device technology, applied in vehicle components, transportation and packaging, elastic suspension, etc., can solve the problems of insufficient target roll control force and inability to effectively reduce roll and other issues

Pending Publication Date: 2021-12-24
TOYOTA JIDOSHA KK
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, when the roll index value decreases, the target roll control force will be insufficient to effectively reduce the sprung roll

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Vehicle travel state control device and vehicle travel state control method
  • Vehicle travel state control device and vehicle travel state control method
  • Vehicle travel state control device and vehicle travel state control method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0045] constitute

[0046] The vehicle running state control device according to the first embodiment of the present invention is figure 2 Indicated by reference numeral 20 as a whole, the driving state control device 20 is applied to figure 1 Vehicle 10 is shown.

[0047] The vehicle 10 includes a left front wheel 11FL, a right front wheel 11FR, a left rear wheel 11RL, and a right rear wheel 11RR. The left front wheel 11FL is rotatably supported by a wheel support member 12FL. The right front wheel 11FR is rotatably supported by a wheel support member 12FR. The left rear wheel 11RL is rotatably supported by a wheel support member 12RL. The right rear wheel 11RR is rotatably supported by a wheel support member 12RR.

[0048] It should be noted that the left front wheel 11FL, the right front wheel 11FR, the left rear wheel 11RL, and the right rear wheel 11RR are referred to as "wheels 11" when there is no need to distinguish them. Likewise, the left front wheel 11FL and ...

no. 2 approach

[0152] exist Figure 11 In the vehicle running state control device 20 according to the second embodiment shown, the vehicle-mounted device 21 is provided with a lateral acceleration sensor 36 and a prediction sensor 37 instead of the steering angle sensor 31 and the vehicle speed sensor 32 . Lateral acceleration sensor 36 and anticipation sensor 37 are connected to ECU 30 . The lateral acceleration sensor 36 detects the actual lateral acceleration Gy of the vehicle 10, and the actual lateral acceleration Gy becomes a positive value when the vehicle turns left.

[0153] The anticipation sensor 37 may be any known in the art as long as it can acquire a value indicating the vertical displacement of the road surface in front of the vehicle 10 (referred to as "road surface displacement"), such as, for example, a camera sensor, LIDAR, and radar. Foresight sensor. The ECU 30 functions as a road surface displacement-related information acquiring device that acquires road surface di...

no. 3 approach

[0180] Running State Control Routine of Third Embodiment

[0181] Similar to the second embodiment, the running state control in the third embodiment is controlled by the ECU 30 according to Figure 16 The running state control routine shown in the flowchart of is executed at predetermined intervals.

[0182] When the predetermined timing is reached, the CPU of the ECU 30 Figure 16 The processing starts from step 1600 to execute step 1610 to step 1680, and then enters step 1690 to temporarily end this routine.

[0183] according to Figure 16 and Figure 12 As can be seen from the comparison, steps 1610 to 1650 and steps 1670 and 1680 are executed in the same manner as steps 1210 to 1250 and steps 1270 and 1280 in the second embodiment, respectively.

[0184] In step 1660, the CPU calculates the index value Fca of the vibration damping control indicating the magnitude of the control force of the vibration damping control, based on the index value Fca, by referring to Fi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Disclosed are a vehicle travel state control device and a vehicle travel state control method. A control unit is configured to execute vibration suppression control, in which the control force generation device is controlled based on a target vibration suppression control force when a wheel passes through a predicted wheel passage position, and roll control, in which the control force generation device is controlled based on a target roll control force for reducing roll of the sprung portion based on a roll index value. When the vibration suppression control and the roll control are executed concurrently, the control force generation device is controlled based on the target vibration suppression control force and the target roll control force obtained after at least one of a reduction correction for the target vibration suppression control force and an increase correction for the target roll control force is performed.

Description

technical field [0001] The invention relates to a vehicle running state control device and a vehicle running state control method. Background technique [0002] As the control of the running state of the vehicle, in the sprung vibration damping control, the control force in the vertical direction generated between the wheel and the vehicle body is controlled to damp the sprung vibration. As the sprung damping control of the vehicle, for example, as described in the following Japanese Patent Laid-Open No. 5-319066, it is known that the front wheel position and Predictive damping control that damps vibration by sprung at the rear wheel position. According to the anticipatory vibration damping control, the sprung vibration can be efficiently damped without delay, compared with the vibration damping control which detects the vertical motion state quantity of the vehicle such as the sprung vertical acceleration and performs based on the detection result. [0003] In addition, a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B60G17/015B60G17/0165
CPCB60G17/0157B60G17/0165B60G2400/0511B60G2400/104B60G2400/821B60G2500/104B60G17/06B60G2400/41B60G2400/204B60G2400/80B60G2400/10B60G2400/252B60G2400/206B60G2400/92B60G2600/182B60G2400/102
Inventor 古田浩贵
Owner TOYOTA JIDOSHA KK