KR19990048289A - Cornering power alarm / adjustment control device of the vehicle - Google Patents

Abstract

It is an object of the present invention to provide a cornering power alarm / adjustment control device of a vehicle that detects a state of balance between the front and rear of the vehicle and generates an alarm when the cornering power is smaller than a preset value to alert the driver and simultaneously adjust the cornering power. The cornering power alarm / adjustment control device is a cornering power alarm / adjustment control device for a vehicle including a plurality of air actuators that change the characteristics of the suspension by a change in the internal pressure. Sensor parts for detecting the state of front and rear balance, driving speed, angular speed, steering angle, garage, etc., and various detection signals output from the sensor parts are analyzed to calculate the cornering power by detecting the front and rear inclination in the front and rear balance state of the vehicle. And a control unit which outputs a front garage control signal and generates an alarm signal in response to a case where the calculated cornering power is smaller than a preset reference cornering power, and which is supplied to the air actuator in response to the garage control signal. A solenoid valve for selectively controlling air pressure, and the warning signal It characterized by that the guide device comprises a speech outputting the attenuation of the cornering power in the audio message.

Description

Cornering power alarm / adjustment control device of the vehicle

The present invention relates to a cornering power alarm / adjustment control device and a control method of a vehicle for detecting a state of balance between the front and rear of the vehicle and generating an alarm when the cornering power is smaller than a preset value to alert the driver and simultaneously adjust the cornering power. It is about.

In a vehicle, the cornering power refers to the magnitude of the force generated when the tire continues to change direction, and when the cornering power is small, the vehicle adjustment and stability are greatly adversely affected. In other words, when the cornering power is small, slip occurs, which causes a problem of making smooth running difficult.

In addition, the majority of vehicles are equipped with a suspension system to alleviate the shock or vibration received from the road surface to improve ride comfort and driving stability of the vehicle. When the electronic control system is adopted, the suspension device is a device for sensing and mitigating vibrations in the front, rear, left and right sides of a garage, and has been developed as a device for securing the controllability and stability of the driving and the riding comfort. A representative example of this is ECS (Electonic Control suspension).

However, the conventional ECS detects only the inclination of the front, rear, left and right of the vehicle by the height sensor installed near the front wheel and the rear wheel, and controls the damper control actuator to control the damping force of the speed-up air actuator. If the cornering power having the same size as Equation 1 is greatly reduced, adjustment is very difficult.

Cp = (w) ^⅔

In Equation 1, Cp is a cornering power, W is the weight of the vehicle.

In addition, when the cornering power is attenuated, there is a problem that the driver may be an inexperienced driver when driving in a state in which cornering power is insufficient, thereby causing an accident.

For example, if you climb a hilly road where the number of people in the back seat of the vehicle is heavy or when the cargo is loaded too much in a load such as a trunk, the slope of the front wheel is greatly reduced, the cornering power is reduced. Falling phenomenon occurs that leads to difficulty in driving.

Therefore, in the conventional vehicle, when the center of gravity of the vehicle is broken, the inexperienced person has difficulty in driving.

Accordingly, an object of the present invention is to provide a cornering power alarm control apparatus and method for detecting a state of the front and rear balance of the vehicle and alarming the driver to alert the driver by voice.

Another object of the present invention is to provide an apparatus and a method for automatically adjusting an unbalanced state of a vehicle by sensing a state of the front and rear balance of a vehicle and driving an air actuator installed near the front, rear, left and right wheels of the vehicle.

SUMMARY OF THE INVENTION The present invention for achieving the above object is a cornering power alarm / adjustment control apparatus for a vehicle having a plurality of air actuators that change the characteristics of the suspension by a change in the internal pressure, which is attached to a plurality of parts of the vehicle. Sensor parts for detecting the balance of the vehicle front and rear, running speed, angular speed, steering angle, garage, etc. and various detection signals output from the sensor parts are analyzed to detect the front and rear inclination in the front and rear balance state of the vehicle to obtain cornering power. A control unit which outputs a front garage control signal and generates an alarm signal in response to a case where the calculated cornering power is smaller than a preset reference cornering power, and is adapted to the garage control signal and supplied to the air actuator. A solenoid valve for selectively controlling the supplied air pressure and the warning signal. It is characterized in that it comprises a voice guidance unit for outputting the attenuation of the cornering power in the audio message.

According to another principle of the present invention, in a cornering power alarm / adjustment control method of a vehicle provided with an electronically controlled suspension including a balance sensor for detecting the front and rear tilt of the vehicle, the output of the balance sensor is read and unbalanced. a cornering power in response to an unbalance state; and comparing the calculated cornering power with a preset reference cornering power in response to a case in which the calculated cornering power is smaller than the reference cornering power. It is characterized by consisting of the process of driving the air actuator through the solenoid valve to adjust the front and rear balance of the vehicle, and generates a voice warning message.

1 is a diagram showing a cornering power alarm / regulation control device according to an embodiment of the present invention.

FIG. 2 is a flow chart of cornering power alarm / adjustment control according to an embodiment of the present invention, which detects a balance state of a vehicle and generates an alarm when cornering power is less than or equal to a preset value and simultaneously controls suspension to maintain balance of the vehicle. Figure showing control of the.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that in the following description, only parts necessary for understanding the operation according to the present invention will be described, and descriptions of other parts will be omitted so as not to obscure the subject matter of the present invention.

1 is a view showing a cornering power alarm / regulation control device according to an embodiment of the present invention. 1 to 12 is a suspension by inputting a variety of detection signals output from the sensor part (not shown), for example, angular velocity sensor, steering angle sensor, vehicle speed sensor, mode switch, balance sensor and the garage sensor It is a control unit that generates a compressor control signal, a valve control signal and a voice alarm signal for control. Reference numeral 14 is an air compressor that is driven by the compressor control signal to generate compressed air, and 16 is a reservoir tank assembly that stores compressed air supplied from the air compressor 14. Reference numeral 18 is an air actuator that is driven by a change in pressure of the supply to adjust the height of the garage. 20 is a solenoid valve driven by a valve control signal output from the control unit 12 to supply the compressed air stored in the reservoir tank assembly 16 to the air actuator 18 or to discharge the compressed air of the air actuator 18 to the outside.

FIG. 2 is a flow chart of cornering power alarm / adjustment control according to an embodiment of the present invention, which detects a balance state of a vehicle and generates an alarm when cornering power is less than or equal to a preset value and simultaneously controls suspension to maintain balance of the vehicle. The figure which shows control of.

Hereinafter, an operation according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2.

Now, when the vehicle is driven while power is supplied to the apparatus of FIG. 1, the control unit 12 reads various sensing signals supplied from the sensor part in the process of FIG. 2. At this time, each of the detection signals are the output of the angular velocity sensor, steering angle sensor, vehicle speed sensor, mode switch, balance sensor and garage sensors. These sensors and their outputs are described in detail in the pre-control suspension of the "Automobile Chassis Control" published by Iljin, Inc., issued August 10, 1994. It should be noted that the present invention will only describe the balance sensor, and the operation of the sensors thereof will not be described.

Among the sensors, the balance sensor is attached at the center of the vehicle, for example, at the center of the entire vehicle road (below the console box of the vehicle interior), and detects the front / back balance / unbalance of the vehicle and responds to it. To generate an electrical signal.

Now, when the cornering power alarm / adjustment control device of the vehicle as in FIG. 1 is operated, the control unit 12 operates the air compressor 14. In this case, the air compressor 12 compresses air and stores the compressed air in the reserve tank assembly 16. The compressed air stored in the reserve tank assembly 16 is supplied to the solenoid valves 20 and 21 through air pipes (parts shown in bold in the figure).

In this state, the control unit 12 that reads the output of the sensor part searches by the output of the balance sensor whether the front-back balance is maintained in the process of FIG. 26. At this time, when the front and rear balance of the vehicle is maintained, the control unit 12 normally controls the suspension device of the vehicle. The method described in the aforementioned publication may be applied to the operation process for normally controlling the suspension device.

If the balance before and after balance is not maintained in step 26, the control unit 12 analyzes the output of the balance sensor in step 30 to detect the tilt back and forth, and calculates the cornering power value in step 32. In this case, the value of the cornering power may be calculated based on Equation 1 using the output of the weight sensors respectively installed on the front and rear sides of the vehicle.

In step 32, the control unit 12 that calculates the value of the cornering power compares the current cornering power CP-C with the preset reference cornering power CP-P in step 34, and the current cornering power CP-C is the reference cornering power. Search for greater than the value of CP-P. In this case, if the current cornering power CP-C is greater than the value of the reference cornering power CP-P in step 34, it is determined that the weight of the front part of the vehicle is greater than the weight of the rear part and the normal control of the above-described step 28 is performed.

However, when the search result of step 34 determines that the current cornering power CP-C is smaller than the value of the reference cornering power CP-P, the control unit 12 performs the solenoid valve SV 20 (in FIG. To control the compressed air of the actuator) to discharge the compressed air of the front actuator 18. Then, another solenoid valve 21 is controlled to supply compressed air to a rear air actuator (not shown). At this time, the front side of the vehicle is lowered by the exhaust operation of the solenoid valve of the front, the rear side is raised, the center of gravity of the vehicle is moved to the front side, and the cornering power is adjusted.

As described above, the control unit 12 which controls the air actuator by driving the front and rear solenoid valves 20 and 21 drives the voice guide device 22 in step 38 to generate a voice guide message indicating that cornering power is not good. Alarm and alert the driver through.

Therefore, when the front and rear balance of the vehicle is broken and the cornering power is reduced, the control device shown in FIG. 1 may adjust the cornering power of the vehicle to increase the friction force between the wheel and the floor and at the same time alert the driver.

In addition, the driver can drive safely by listening to the warning message guided by the voice and recognizing the reduction of the cornering power.

As described above, the present invention can improve driving stability by appropriately controlling the suspension device by detecting the state of the front and rear balance of the vehicle, and can prevent the accident due to the slip phenomenon by warning the driver of reduced cornering. There is an advantage to that.

Claims (4)

In a cornering power alarm / adjustment control apparatus for a vehicle having a plurality of air actuators that change the characteristics of the suspension by a change in the internal pressure, Sensor parts attached to a plurality of parts of the vehicle to detect the state of the front and rear balance, running speed, angular speed, steering angle, garage, etc., Analyze the various sensing signals output from the sensor part to detect the front and rear inclination in the front and rear balance state of the vehicle to calculate the cornering power, and in response to the calculated cornering power is smaller than the preset reference cornering power. A control unit for outputting And a solenoid valve adapted to selectively control the air pressure supplied to the air actuator in response to the garage adjustment signal. The cornering power alarm / adjustment control device for a vehicle according to claim 1, wherein the control unit outputs a voice alarm signal for alarming a state of the vehicle when the height adjustment signal is output. 3. The cornering power alarm / adjustment control device for a vehicle according to claim 2, comprising a voice guidance device for outputting attenuation of cornering power as a voice message by the voice alarm signal. What is claimed is: 1. A cornering power alarm / adjustment control method for a vehicle having an electronically controlled suspension including a balance sensor for detecting the front and rear tilt of the vehicle. Calculating cornering power in response to reading the output of the balance sensor in response to an imbalance state; By comparing the calculated cornering power with a preset reference cornering power, in response to the calculated cornering power being smaller than the reference cornering power, the air actuator is driven through the front solenoid valve and the rear solenoid valve, respectively, to balance the front and rear of the vehicle. Adjusting and generating a voice warning message.