KR100200066B1 - Electric steering system - Google Patents

Abstract

The present invention relates to an electronic steering apparatus, and the conventional steering apparatus has a mechanical structure including a steering column, which is very complicated and not easy to pack, and has a heavy weight, which makes it difficult to operate the steering wheel.

Accordingly, the present invention includes a rotation amount detection unit 103 for detecting the rotation amount of the steering wheel 102; A position change amount determining unit 104 for converting the rotation amount value into hydraulic pressure to determine an amount causing position change; An oil pump 106 for pressurizing oil at engine start-up; A hydraulic controller 107 for controlling the hydraulic pressure of the oil pump 106; An oil press (108) for generating the controlled oil pressure; An actuator 109 for controlling the wheel 111 by driving the drag link 110 by the oil pressure generated by the oil pressure 108 and sensing the pressure of the oil pressure and the position change amount of the wheel 111; A microprocessor (100) for controlling the hydraulic pressure and controlling the overall operation of the steering apparatus by calculating the detected pressure and position change amount of the hydraulic pressure and the position amount change value of the position change amount determiner (104); It is achieved by consisting of a pressure generating unit 101 for generating pressure by the microprocessor 100 to provide a steering wheel (102).

Description

Electronic steering system.

The present invention relates to an electronic steering system, and more particularly, without a steering column, the driver calculates the amount of turning the wheel with the maximum hydraulic pressure generated from the oil pump in the electronic controller when operating the steering wheel, and manipulates the steering wheel by hand. The present invention relates to an electronic steering apparatus that calculates a stable speed and a required force at a time, and adjusts the hydraulic pressure and a drag link of the oil press using the calculated value.

In general, a steering apparatus of a vehicle includes a steering wheel which the driver manipulates by hand to change a driving direction of the vehicle; A steering column having a built-in steering shaft and coupled to the steering wheel to block vibrations transmitted from the road surface to the steering wheel, and to transmit an operating force of the steering wheel to the steering gear; A steering gear coupled to a steering shaft of the steering column to change the rotational force of the steering wheel to linear movement and to increase steering force; It is largely composed of an oil pump for pressurizing the oil generated in the oil tank to the power cylinder to change the direction of the tire by the drag link.

In general, the steering device of a vehicle configured as described above causes the steering shaft mounted in the steering column to rotate when the driver manipulates the steering wheel, and also the vibration transmitted from the road surface, that is, the uneven road surface from the wheel to the steering wheel. It blocks the transmitted vibration.

When the steering shaft rotates, the steering gear coupled to the steering shaft changes its rotational force in a linear motion and transmits it to the cylinder.

The cylinder rotates the wheel by adjusting the grade link by the pressing force of the oil pump generated in the oil tank.

However, in the conventional steering device of the vehicle, as described above, the steering column transmits rotational force to the steering gear by operating the steering wheel, and the cylinder and the drag link are adjusted by the steering gear to rotate the wheels. Only the steering column rotates the wheels, so that an expensive steering column is essentially provided, and a very complicated mechanical structure makes packaging difficult and heavy, as well as the remaining parts except the steering column and the steering gear. Since only the hydraulic operation of the steering wheel has a difficult and inconvenient problem that must be applied a lot of force when operating.

Accordingly, an object of the present invention is to eliminate the expensive steering column in view of the conventional problems as described above, and to adjust the steering by dragging only the link (Wiring) and hydraulic pressure from the steering wheel to each unit steering electronic steering device In providing.

Another object of the present invention is to install the controller to calculate the amount that the driver can turn the wheel with the maximum hydraulic pressure generated from the oil pump in the electronic controller when operating the steering wheel, and stable speed and required force when operating the steering wheel by hand It is to calculate the steering by adjusting the drag link to the hydraulic control of the hydraulic pressure.

An object of the present invention as such a rotation amount detecting unit for detecting the rotation amount of the steering wheel; A position change amount determiner which determines an amount causing position change by converting the rotation amount value obtained by the rotation amount detector into hydraulic pressure; An oil pump coupled to the engine feed for supplying suction pressure to the oil in the oil tank when the engine is started; Yubap controller for controlling the oil pressure of the oil pump by the external control signal; An oil pressure unit for generating the controlled oil pressure obtained in the oil pressure controller; An actuator for driving the drag link by the hydraulic pressure generated by the oil press to steer the wheel and to sense the pressure of the hydraulic pressure and the position change of the wheel; A microprocessor for controlling the hydraulic controller and controlling the overall operation of the steering apparatus by calculating the pressure and position change amount of the hydraulic pressure sensed by the actuator and a position amount change value determined by the position change amount determiner; It can be achieved by consisting of a pressure generating unit for generating a pressure by the control signal of the microprocessor to provide to the steering wheel.

In the present invention, without the steering column, the driver generates the position change value according to the hydraulic pressure detected by the microprocessor in the microprocessor and the amount of rotation of the steering wheel and the position change amount of the wheel detected by the actuator when the steering wheel is operated by the driver. Calculate the amount and stable speed and the required force to turn the wheel with the calculated value and adjust the hydraulic pressure and drag link of the hydraulic press to make the steering wheel operation easier and more stable and achieve the above purpose effectively Can be.

1 is an embodiment block diagram showing the electronic steering apparatus of the present invention;

FIG. 2 is a configuration diagram showing FIG. 1 in more detail. FIG.

* Explanation of symbols for main parts of the drawings

100: microprocessor 101: pressure generating unit

102: steering wheel 103: rotation amount detection unit

104: position change amount determining unit 106: oil pump

107: hydraulic controller 108: hydraulic

109: actuator 110: drag link

111: wheels

Hereinafter, with reference to the accompanying drawings, the technical configuration and operation effects as a preferred embodiment that can effectively achieve the object of the present invention will be described.

1 is an embodiment block diagram showing the electronic steering apparatus of the present invention, Figure 2 is a block diagram showing a more detailed configuration of Figure 1 as shown in the present invention is designed by the driver to change the driving direction of the vehicle by hand A steering wheel 102 for operating; A rotation amount detector (103) for detecting an amount of rotation of the steering wheel (9102) during rotation; A position change amount determiner 104 for determining an amount causing a change in position by converting the rotation amount value detected and input by the rotation amount detector 103 into hydraulic pressure; An oil pump 106 coupled to the engine feed 105 to suck and pressurize and supply oil in an oil tank (not shown) when the engine is started; A hydraulic controller 107 for controlling the hydraulic pressure supplied from the oil pump 106 by an external control signal; An oil pressure machine (108) for supplying oil pressure controlled by the oil pressure controller (107); The drag link 110 is driven by the oil pressure generated by the oil pressure 108 to steer the wheels 111, and the pressure of the oil pressure and the position change of the wheels are sensed, and accordingly, the electric hydraulic pressure signal AS1 and An actuator 109 for generating a position change amount signal PS; The hydraulic pressure controller AS1 detects and inputs the hydraulic pressure signal AS1 and the position change amount signal PS and the position change amount of the steering wheel 102 determined by the position change amount determiner 104. 107 and a microprocessor 100 for generating an outer pressure signal AS2 to control the pre-operation of the steering apparatus; Due to the pressure signal AS2 generated by the microprocessor 100, the pressure generated to generate pressure on the steering wheel 102 so that the steering wheel 102 feels the resistance value when the drag link 110 moves. It consists of a unit 101.

In the above, the actuator 109 includes a valve and a pressure sensor 109a for detecting the pressure of the hydraulic pressure generated by the hydraulic pressure 108 and generating an electrical hydraulic pressure signal AS1 accordingly; And a position change sensor 109b that detects a position change of the drag link 110 and generates an electrical position change amount signal PS.

A preferred embodiment of the present invention configured as described above will be described in more detail with reference to FIGS. 1 and 2 as follows.

First, when the driver manipulates and rotates the steering wheel 102, the rotation amount detector 103 detects the rotation amount of the steering wheel 102 and provides the position change amount determiner 104.

First, the driver detects the amount of rotation of the steering wheel 102 and provides the position change amount to the determination unit 104.

The position change amount determining unit 104 converts the rotation amount value detected and input by the rotation amount detecting unit hydraulically to determine the amount causing the position change, and the determined position change amount value will be described later in the microprocessor 100. ).

Meanwhile, the oil pump 106 coupled to the engine feed 105 sucks and pressurizes oil stored in the oil tank by the power transmitted from the engine feed 105 to provide the hydraulic controller 107.

The oil pressure controller 107 controls the oil pressure generated by the oil pump 106 by the control signal provided from the microprocessor 100 and provides the oil pressure to the actuator 109 through the oil pressure 108.

The actuator 109 rotates the wheel 111 left and right by adjusting the drag link 110 coupled thereto by the hydraulic pressure provided from the hydraulic pressure 108.

At this time, the valve and the pressure sensor 109a built in the actuator 109 detects the pressure of the hydraulic pressure provided from the hydraulic pressure 108 and generates an electrical hydraulic pressure signal AS1 according to the microprocessor 100. The position change sensor 109b detects the position change of the drag link 110 and generates an electrical position change amount signal PS according to the position change sensor 109b to provide it to the microprocessor 100.

The microprocessor 100 includes a hydraulic pressure signal AS1 detected by the valve and the pressure sensor 109a of the actuator 109 and a position change amount signal PS detected and input by the position change sensor 109b; By calculating the position change amount determined and input by the position change amount determiner 104 to adjust the hydraulic pressure through the hydraulic controller 107 and to feel the resistance received from the actual wheel 111 on the steering wheel 102. The pressure signal AS2 is provided to the pressure generator 101.

The pressure generator 101 generates pressure to move the drag link 110 in proportion to the steering wheel 102 by the pressure signal AS2 provided from the microprocessor 100.

In other words, the resistance value when the drag link 110 moves in proportion to the hydraulic force makes the resistance value of the steering wheel 102 slow.

This implies that the steering wheel 102 rotates as much as B with the force of A, and the hydraulic pressure as much as C occurs so that when the drag link 110 moves by D, the rotation of the wheel 111 rotates by E degrees. To calculate the value and input the value to the microprocessor 100.

When the microprocessor 100 rotates the steering wheel 102 by the aforementioned A, the microprocessor 100 changes the B, C, and D so that the wheel 111 can rotate by E degrees.

Calculate the amount that can turn the wheel 111 with the maximum hydraulic pressure and calculate the stable speed and the required force when turning the steering wheel 102 by hand to adjust the hydraulic and drag link 110 to steer.

This causes the oil pressure to come to the center when the drag link 110 comes to the center by using the property that the wheel 111 is going to be straight, by turning the steering wheel 102 to control the oil pressure in the microprocessor 100 to control the oil pump ( The piston of 106 moves the drag link 110 to rotate the wheel 111.

As described above, according to the present invention, when the driver operates the steering wheel 102, the pressure of the hydraulic pressure generated from the oil pump 106 in the microprocessor 100 and sensed by the actuator 109, and the amount of change in the bias of the drag link 110 are determined. And the steering wheel 102 without the steering column by controlling the hydraulic and drag links by calculating the amount of the wheel 111 can be turned and the stable speed and the required force with the position change value according to the rotation amount of the steering wheel 102. The operation of can be made easier and more stable.

As described above, the present invention eliminates the expensive steering column and can be steered by adjusting the drag link only by the wiring and hydraulic pressure from the steering wheel to each unit. The steering wheel is operated more stably and easily by calculating the amount that can be turned by the maximum hydraulic pressure generated from the oil pump in the processor, and by adjusting the hydraulic pressure of the hydraulic unit by calculating the stable speed and the required force when operating the steering wheel by hand. Of course, there is an effect that mechanical complexity is excluded.

Claims (1)

An electronic steering apparatus for determining a position change amount according to a rotation amount of a steering wheel and steering a wheel by driving a drag link by hydraulic pressure generated by an oil pressure controlled by a hydraulic controller; The drag link 110 is driven to steer the wheels, detect the pressure generated by the hydraulic pressure, and thereby detect the position change of the valve and pressure sensor 109a and the drag link generated by the hydraulic pressure signal AS1. In the actuator 109 including a position change sensor 109b for generating an electrical position change amount signal PS, the hydraulic pressure signal AS1, the position change amount signal PS, and the position change amount determiner 104. A microprocessor 100 for controlling the hydraulic controller 107 for controlling the oil pressure of the oil pump according to the determined position amount change value, and for controlling the overall operation of the steering apparatus; The pressure generating unit 101 generates pressure so that the microprocessor 100 makes the resistance value when the drag link 110 moves in proportion to the hydraulic force by the control signal to the resistance value felt by the steering wheel 102. ); Electronic steering apparatus, characterized in that configured to include.