JPS63116918A - Roll control mechanism - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a roll control mechanism for performing roll display and warning in an active suspension system installed in a vehicle, as well as vehicle speed deceleration control for danger avoidance.

[Conventional technology]

As is well known, active suspension in vehicles uses a control circuit to process signals from sensors that detect the owner of the actuator that supports the vehicle body and the position of its piston, and adjust the system to various conditions such as pitch and roll of the vehicle body at that time. A signal for performing a corresponding attitude control is output, and this control signal is input to a servo valve to perform intended vehicle body control under the operation of the actuator.

In other words, this type of system automatically performs suspension operation to stabilize the vehicle body condition while the vehicle is running, so that the vehicle can always drive in the most stable manner under each situation.

(Problems to be Solved by the Invention) In a vehicle equipped with an active suspension system under such control, it is possible not only to control the equilibrium position of the vehicle body, but also to perform reverse lorry control during vehicle body control, especially during roll control. While improving the cornering limit of the vehicle, in order to provide the driver with a more stable feeling compared to normal driving conditions due to changes in posture at such times, the potential for cornering to exceed the limit is improved. It is dangerous.

To this end, the present invention, in a vehicle equipped with such an active suspension control W mechanism, displays the current driving condition to the driver to alert the driver before the driving condition exceeds the vehicle's performance limit. The purpose of this project is to develop a mechanism that not only encourages danger avoidance but also automatically controls vehicle speed deceleration or engine braking when the roll limit is reached.

[Means for solving problems]

In order to achieve this object, the present invention provides an active suspension mechanism for roll control including a mechanism for calculating a vehicle body condition based on signals from a roll prediction sensor and a roll sensing sensor, and displaying the vehicle body condition as a result of the calculation. Roll control is equipped with a mechanism and a mechanism that controls vehicle speed deceleration before the vehicle body condition under the display reaches the roll limit! We propose one mechanism.

(for production) As a sensor that detects the condition of the vehicle while driving.

Actuator load (or internal pressure) sensors and displacement sensors for each wheel are applied, and as sensors for prediction, for example, vehicle speed sensors, steering angle sensors, acceleration sensors, etc. can be applied, and the mechanism that calculates the vehicle body condition uses these sensors. The control circuit calculates and determines the predicted changes in the vehicle body condition due to steering wheel operation, accelerator operation, etc., based on the sensed signals from the controller and taking into consideration the vehicle body condition at that time.

The signal of the result of calculation and determination by this control circuit is sequentially given to a mechanism that displays the vehicle body condition, and in the mechanism, the driver's attention is called to the driver's attention by means of a display means such as an indicator placed on the driver's seat such as a dash board.

The mechanism for controlling vehicle speed deceleration includes a control brake control device, an engine rotation control device, etc., and operates the device using a signal from the calculation result immediately before the vehicle body condition under the display reaches the roll limit.

Next, features of the present invention will be described in further detail with reference to illustrated embodiments.

(Embodiment) FIG. 1 is a mechanical block diagram showing an embodiment of the present invention, in which an actuator load sensor 1, a vehicle speed sensor 2. A mechanism for calculating the vehicle body condition is provided by a roll sensing and prediction sensor group consisting of a steering angle sensor 3, a displacement sensor 4, an acceleration sensor 5, etc., and a control circuit 6 which assigns specific weight to each detection signal from these sensors and performs arithmetic processing. Configure. Note that the lateral G control arithmetic processing circuit in a conventionally well-known suspension controller can be applied to this mechanism.

Reference numeral 7 denotes an indicator, which has a safety area 8a of a predetermined width centered on the neutral position of the pointer on its display panel, and has warning areas 8b, 8b on both sides of the area 3a, and these circular areas 8b, 8b. Furthermore, a vehicle speed restriction area 8C18C is displayed on the outside. The indicator 7 receives the output from the control circuit 6.
The system functions as a mechanism that sequentially displays the status of the vehicle while it is running.

Further, the output of the control circuit 6 is transmitted to an engine speed control device @9 and a braking brake control device 1O as a mechanism for controlling vehicle speed deceleration via the indicator 7 or directly.
given to.

The operation of the embodiment having such a configuration will be explained according to the flowchart shown in the second figure. When control is started by starting the engine or turning on a separate control switch,
Detection signals from the various sensors 1 to 5 are sent to a control circuit 6.
The signal is input to the circuit 6, and after being subjected to arithmetic processing in the circuit 6, it is output to the indicator 7.

The instrument 7 causes a pointer to wave on its display panel in accordance with the output value, and the vehicle body situation at that time is displayed by each of the areas 8a to 8c.

At the same time, the previous output is compared with the safe range value, and if the vehicle body condition is still in a safe state, the previous operation is repeated, and if it is outside the safe range, a warning means such as an alarm or flashing lamp is issued. It is started and then compared to the speed limit area value.

If the comparison result does not reach the limit area, the previous operation accompanied by the warning operation is repeated, and if it does reach the limit area, a vehicle speed limit output is output, and the bag g! 19 and 10 to control the speed to be decelerated.

(Effects of the Invention) As described above, according to the mechanism of the present invention, a vehicle equipped with an active suspension mechanism includes a mechanism that calculates the vehicle body condition based on signals from a roll prediction sensor and a roll detection sensor, and the calculation result. The driver is equipped with a mechanism that displays the vehicle body condition under 1 display and a mechanism that controls vehicle speed deceleration before the vehicle body condition reaches the roll limit, so the driver can always grasp the vehicle body condition while driving using the display mechanism. Furthermore, if the driving condition is about to exceed the vehicle body roll limit, vehicle speed deceleration control is automatically performed, so that cornering that exceeds the vehicle body roll limit under the vehicle body condition that has been corrected to be stable by the active suspension mechanism. It is possible to prevent the vehicle from running, etc., and it is also possible to automatically prevent the vehicle from entering the limit range due to careless driving operations.

The mechanism of the present invention is capable of preventing danger while making full use of the vehicle's machinery, and has great practical benefits.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the mechanism of the present invention, and FIG.
The figure is a flowchart showing the operating state of the mechanism of the present invention. l to 5...Sensor group, 6...Control circuit, 7...Indication instrument, 8a...Safety area, 8b...Warning area, 8c...
Speed limit area, 9...engine speed control? Place
lO: Brake control device.

Claims (2)

[Claims] (1) In an active suspension mechanism for roll control, there is a mechanism for calculating the vehicle body condition based on signals from a roll prediction sensor and a roll sensing sensor, a mechanism for displaying the vehicle body condition as a result of the calculation, and a mechanism for displaying the vehicle body condition under the display. A roll control mechanism comprising: a mechanism for controlling vehicle speed deceleration before the vehicle reaches its roll limit; (2) The roll control mechanism according to claim 1, wherein the display mechanism has instruments on both sides of the safety display area that indicate the vehicle speed limit display area with a warning display area interposed therebetween.