BG64501B1 - Devices for automatic control of the motor-car travel - Google Patents

Abstract

The devices are designed to be built into a manual drive of a motor car. By them it is possible to make automatic control of the start-up, gear switching, gear release during the movement and in braking, as well as switching to idle running. The transmission and the steering mechanisms of the motor-car are not changed, and the existing manual control is also preserved. The throttle valve is controlled by a following device, its setting is made by the throttle valve control valve with a switched on gear and by the control system when switching the gears. On the clutch pedal controlling the clutch a second pedal coaxially fitted is fitted, forming the setting of the next device controlling the clutch. Depending on the situation, the clutch is controlled by the driver or by the steering system. The automatic control of the transmission box is made by reversible drives, connected to the respective lever of the lever system for switching the gears, and their switching can be made both by the steering system, ands by the motor-car driver.

Description

Technical field

The invention relates to devices for automatic control of the movement of the car, which is used in cars with manual control.

BACKGROUND OF THE INVENTION

Existing automatic clutch and gearbox control systems utilize clutch and gearbox control units other than those traditionally used in manually operated vehicles. Such a technical solution introduces discomfort and uncertainty in the initial adaptation period for drivers who have adapted their reactions to a manually operated vehicle (1).

There is a known method for switching the stages of an automatic or automated mechanical synchronized gearbox. To implement the method, the dependence Μ (φ) between the engine torque and the position of the throttle pedal and the dependence M (n) between the engine torque and its speed are determined and stored in the memory of the electronic control unit. The electronic block receives signals for the position of the throttle pedal and the engine speed, which searches for the value of the moment referring to the measured signal of the position of the throttle pedal and the value of the moment related to the measured signal of the engine speed and based on their comparison, a load signal s is generated. The load signal s thus produced is then again compared by means of the load estimator with a signal expressing a constant - increasing the load sf and with a signal expressing a constant - lowering the load. The engine speed signal is also compared through the speed unit with a signal expressing the constant nf - increased rpm and with a signal expressing the constant ng - reduced rpm. When the load signal s is lowered under the signal sf - the load is increased, and when the speed signal is increased above the signal nf - increased speed, a higher gear changeover command (2) is issued using a switchgear.

SUMMARY OF THE INVENTION

The task is to create automotive controls that allow the devices to be built into already-made vehicles with manual gearshift control, while retaining the existing clutch and gearbox and, along with new automatic controls, also maintain the existing manual control, not to reduce the efficiency and reduce the dynamics of the car.

According to the invention, the automatic vehicle control unit includes an automatic clutch control device, which consists of a power pedal connected via a steel wire to the clutch. In parallel to the power pedal is a setting pedal which is connected via a steel wire to the movable end of a potentiometric sensor, the output of which is connected to an analog input of the control unit. The output of the potentiometer clutch position sensor is connected to a second analog input from the control unit. The on / off clutch status sensors are connected to the digital inputs of the control unit. The two digital outputs of the control unit are connected to the reversing control unit of the DC motor driven gearbox, the shaft of which is connected via a steel wire to the clutch control pedal.

An automatic vehicle motion control device includes a device for automatically controlling the throttle valve, according to the invention the throttle valve is controlled by a DC motor and gearbox by a reversing block. The connections between the gearbox and the throttle valve, the potentiometric sensor for the position of the throttle valve, and the potentiometric sensor for the position of the throttle pedal and the pedal itself are made through steel wires. The control signals for the reversing block are formed by block 2

64S01 control and a potentiometric throttle position sensor and a potentiometer throttle pedal position sensor are connected to the analog inputs of the control unit.

An automatic vehicle traffic control device includes an automatic gearbox control unit consisting of a gear shift lever. The X coordinate selector lever and the Y coordinate on / off lever are connected via steel wire reversing actuators, with the reversing actuator control inputs connected to the digital outputs of the control unit, and the position sensors of the lever system are connected to the control unit.

The advantages of existing technical solutions are as follows. It is possible to incorporate the device into an already manufactured car without changing the transmission and the controls. It is possible to control automatically all stages of the transmission-related movement: starting, changing gears, switching on and off the gear while maintaining manual control. The dynamic qualities of the car and its overall efficiency are retained.

Description of the attached figures

Figure 1 shows the clutch control circuit.

Figure 2 shows the control scheme for the throttle valve.

Figure 3 shows the gearbox control scheme.

An exemplary embodiment of the invention

Automatic clutch control unit

The automatic clutch control device (Fig. 1) consists of a power pedal 3 which is connected via a steel wire 6 to the clutch 8. Parallel to the power pedal is a setting pedal 2 which is connected by a steel wire 5 to the movable end of the potentiometer sensor 11, the output of which is connected to the analog input AI4 of the control unit 45, the output of the potentiometer sensor for the position of the connector 12 is connected to another analog input of the control unit AI3, the sensors 10, 9 for the status of the connector on / off are connected to the digital inputs DI2, DI1 from the control unit, the two digital outputs and DOI, DO2 from the control unit are connected to the reversing unit 37 for controlling the DC motor 13, driven gearbox 7, the shaft of which is connected by a steel wire 4 to the clutch control pedal.

Automatic throttle control device

The throttle valve 19 of the automatic throttle control device (Fig. 2) is controlled by the DC motor 21 and the gearbox 22 through the reversing unit 38. The connections between the gearbox and the throttle valve, potentiometric sensor 18 for the position of the throttle valve and the throttle valve, potentiometric sensor 16 for the position of the throttle pedal and the pedal itself 14 are made by means of steel cores 20,17, 15. The inputs for the control of the reversing unit 38 are connected to the digital outputs DO3, DO4 of the control unit is 45 and a potentiometric sensor for the throttle position and a potentiometric sensor for the position of the throttle pedal are connected to the analog inputs AP, AI2 of the control unit 45.

Automatic gearbox control unit

The automatic gearbox control unit (Fig. 3) consists of a gear shift lever 33,34, with the gear selector 33 coordinate X connected via a cable 31 to the gear unit driven by the DC motor 35. The DC motor control unit 39 is connected to the digital outputs DO5, DO6 of the control unit 45. The gear-on / off lever 34 is connected via the cable 32 to the gear unit 29 driven by the DC motor 36. Reversible lock 40 for controlling the DC motor 36 is connected to tsifro3 viteizhodi DO7, DO8 of the control unit 45.

Examples of carrying out the invention

Mounting the system in a car with traditional controls - clutch pedal, throttle pedal, brake pedal, and manual gearshift lever, enables gearshifting to be done automatically, semi-automatically and manually, with automatic speed synchronization . The mode is selected by the selector switch 43 (Figure 2).

System operation with automatic gear shifting.

In this mode, depending on the load and the engine speed (ref. 2), the control unit issues commands to the actuators for the clutch control, the throttle valve and the gear shift lever, with the following sequence of actions:

- the clutch is automatically switched off;

- the throttle valve closes automatically when the clutch is switched off;

- the gears are automatically shifted (for example, if the vehicle was in second gear before shifting and a third gear needs to be shifted) by performing the following actions on the lever system sequentially: movement of the lever 34 from the y-axis to the y-coordinate , movement of lever 33 from coordinate x1 to coordinate x2, movement of lever 34 from coordinate y2 to coordinate y 1;

- at the same time as the gear shifting, the throttle valve is automatically opened to a position in which the speeds of the engine output shaft and the gearbox input shaft will be synchronized;

- the moment the gear unit is engaged, the clutch is engaged at a speed inversely proportional to the difference between the speed of the engine output shaft and the gearbox input shaft.

System operation with semi-automatic gear change.

In this mode, the start of the gear shift is actuated by the driver via the pulse button 44, the action of the system being as described above.

Manual gear shifting with automatic speed synchronization.

In this mode, the gears are manually shifted by the driver of the vehicle, the speeds being synchronized by the control unit after the new gearbox is selected, and the clutch is engaged at a speed inversely proportional to the difference between the speeds of the engine output shaft and the gearbox input shaft.

Claims (3)

Claims 1. An automatic vehicle motion control device comprising an automatic clutch control device comprising a power pedal (3) which is coupled via a steel wire (6) to a clutch (8), characterized in that a power pedal (1) is mounted on the power pedal, which is connected via a steel wire to the movable end of a potentiometric sensor (11), the output of which is connected to an analog input (AI4) of a control unit (45), wherein the output of potentiometric sensor (12) for clutch position connected to the analog input (AI3) of the control unit, and sensors (10,9) for the on / off connector status are connected respectively to digital inputs (DI2, DI1) of the control unit, whereby two digital outputs (DOI, DO2) from the control unit are connected to a reversing unit (37) for controlling the DC motor (13), driven by a gearbox (7), the shaft of which is connected via a steel wire to the power pedal (3) to control the clutch (3). 8). An automatic vehicle motion control device including an automatic throttle control device, characterized in that the throttle valve (19) is connected to an actuator consisting of a DC motor (21), a gearbox (22) and a reversing block (22), the connections between the gearbox and the throttle valve, the potentiometric sensor (18) for the position of the throttle valve, and the potentiometer sensor (16) for the position of the throttle pedal and the pedal (14) are made by steel and cores (15, 20), the signals for the control of the reversing unit are formed by the control unit (45) and the potentiometric sensor (18) for the position of the control unit are connected to the analog inputs (AP, AI2) of the control unit throttle valve and potentiometer sensor (16) for throttle pedal position. 3. Vehicle automatic control device including an automatic gearbox control device, characterized in that the gear selector lever (33) is the coordinate X, and the gear lever on / off (34) - the coordinate Y is connected by corresponding steel wires (31,32) to the respective reversing actuators (I, II), and the inputs of the control units (39, 40) of the reversing actuators are connected respectively to digital outputs (DO5, DO6 and DO7, DO8) of b control eye (45) and 5 lever position sensors (23,24,25,26,27,28) are connected respectively to digital inputs (DI3, DI4, DI5, DI6, DI7, DI8) of the control unit control (45).