JPS6231308Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a shift position command device for simulation operation.

FIG. 1 is a block diagram schematically showing a shift position control system used in simulation operation for automatically driving an automobile or an engine.

In the figure, 1 is a shift position command device;
The shift position control device 2 generates a shift position control signal based on the shift command from the command device 1, and is configured to shift a shift lever 4 provided on the simulation vehicle 5 to a desired position via an actuator 3. ing. In such a shift position control system, a shift position command device for giving a shift position command has conventionally been constructed as shown in FIGS. 2A and 2B. Referring to FIG. 2A, set vehicle speeds are set respectively in the upshift direction and downshift direction of successive shift positions (1st, 2nd, 3rd, and 4th) using setters V ₁₂ , V ₂₁ ; V _{23 .} , V ₃₂ ; V ₃₄ and V ₄₃ , respectively. These set vehicle speed values and the vehicle speed detection signal Vd are matched at matching points P ₁ , P ₂ , P ₃ , and the vehicle speed detection signal Vd is higher than each set vehicle speed value V ₁₂ .
When V is greater than ₄₃ , the corresponding comparator RY ₁ ,
RY ₂ and RY ₃ turn on. For example, if the vehicle is currently accelerating in first gear and the detected vehicle speed exceeds the value set by the setting device V ₁₂ , the comparator RY ₁ will be turned ON, the connection of the changeover switch S ₁ shown in FIG. 2B will be changed, and the relay L ₂ will be switched on. is excited and a 2nd speed command is generated, and the changeover switch _S'1 is also switched on and the setting is changed to the setting by the setting device _V21 . Furthermore, the second
In Figure B, VoP is the relay operating voltage.

Conventionally, in the settings made by each of the setting devices _V12 to _V34 , the shift up direction is set to be larger than the shift down direction, so even if the above-mentioned shift command from 1st to 2nd speed is generated and the settings are changed, , V ₁₂ > V ₂₁
Therefore, comparator RY ₁ maintains the ON state. If it accelerates further from this state and exceeds the set value V ₂₃ , comparator RY ₂ turns ON and the switch
Since the connection of _S2 is switched and the relay _L3 is energized, a 3rd speed command is generated. Thereafter, the gears are changed in the same manner according to the vehicle speed.

In this way, comparators may be prepared depending on the number of transmission stages of the simulation vehicle. Also, the simulation car is decelerated, e.g. set value V ₃₂
When the vehicle speed detection signal becomes smaller, a second speed command is issued and a downshift is performed by a similar operation.

As mentioned above, the conventional shift control system generally sets the setting for upshifting to be larger than the setting for downshifting, but this setting method cannot achieve the actual vehicle driving conditions required in simulation driving. That is, if the set value V ₁₂ for a certain shift position, for example, a shift up from 1st gear, for example, 2nd gear, is set larger than the corresponding set value V ₂₁ for a downshift from 2nd gear to 1st gear,
The vehicle speed when shifting from 1st to 2nd gear is 2
This is higher than the vehicle speed when downshifting from 1st gear to 1st gear. However, in actual vehicle driving, the opposite is true, and the vehicle speed at the time when it is desired to shift down is usually higher than the vehicle speed at the time when the shift up is performed. Therefore,
In the circuit shown in FIG. 2A, if V ₂₁ > V ₁₂ is set to satisfy this requirement, the vehicle speed detection signal will reach the set value V ₁₂ and the gear will be shifted to 2nd gear, but after the shift is completed the vehicle speed will be Since the detection signal is smaller than the set value V ₂₁ ,
It will shift to 1st gear again. As a result, 1st and 2nd gear
The vehicle repeatedly speeds up and down and becomes unable to drive.

The present invention has been made in view of the above points, and provides a shift position command device for simulation driving that makes it possible to set a shift down point larger than a shift up point in accordance with actual speed driving. The purpose is to

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 3, in this embodiment, in addition to the conventional relay circuit for shift position command shown in FIG.
It is characterized by the provision of H ₁ and H ₂ . The hold circuit H ₁ is composed of a series circuit of the normally open contact L ₂ a of the relay L ₂ for 2nd speed command and _the normally closed contact X ₁ that responds to deceleration conditions. It consists of a series circuit of a normally closed contact L ₃ a of relay L ₃ and a normally closed contact X ₂ that responds to deceleration conditions.

Figure 4 shows an example of a circuit that provides the above-mentioned deceleration conditions. A differentiator is configured by adding a capacitor C and a resistor Rf to a DC amplifier (DCAmp), and the output of this differentiator is judged by a comparator RY. . For example, if a vehicle speed command from a vehicle speed control device based on control of the accelerator opening (not shown) is input to the differentiator, if the vehicle speed is increasing as shown in FIG. Since the output of the differentiator is positive, the comparator
If the output of RY is considered as an inverting amplifier, it will be OFF,
Normally closed contact X is closed. At this time, time t=
If the vehicle speed exceeds the set value _V12 at _t1 , the switch _S1 shown in Fig. 3 is switched, the relay _L2 is energized, and the normally open contact _L2a , which generates the second speed command, is closed and the vehicle enters the hold state. At the same time, the setting value is changed to V ₂₁ . Although the vehicle speed is increasing, the vehicle speed after the shift is smaller than this set value _V21 , so it attempts to shift to 1st gear again, but as mentioned above, the 2nd gear command state is maintained by the hold circuit _H1 , so the 2nd gear command state is maintained by the hold circuit H1. The speed will be increased while maintaining the same speed. When the vehicle speed exceeds the set value _V21 , the switch _S1 operates and switches to the second speed side regardless of the state of the hold circuit _H1 , and the vehicle speed is controlled to be constant from time t= _t2 .
When the vehicle speed is constant, the differentiator output becomes zero as shown in FIG. 5C, but since the comparator RY remains OFF, the hold state is maintained. Next, time t=t ₃
When the vehicle speed decreases, the output of the differentiator becomes negative as shown in Figure 5C.
RY turns ON, normally closed contact X is opened, and the hold state is released. In this way, when the vehicle speed is decreasing and the vehicle speed becomes less than the set value V ₂₁ , the switch is activated.
_S1 switches to the 1st speed command side, allowing downshifting.

In addition, without using the differentiator shown in FIG. 4, brake operation is detected as shown in FIG. ) may be used as a condition. Or both
A hold state may be set with an OR condition. Furthermore, this hold condition may be obtained from the output of a variable resistor for detecting the position of the shift lever.

Since the present invention is as described above, it is possible to set the set vehicle speed value so that the set value in the downshift direction is larger than the set value in the corresponding upshift direction, and it is possible to perform simulation driving in accordance with actual vehicle driving. Can be implemented.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the schematic configuration of the shift control system in simulation operation, Figs. 2A and B are circuit diagrams of a conventional shift position command device, and Fig. 3
Figure 4 is a circuit diagram of a shift position command device according to the present invention, Figure 4 is a circuit diagram of an embodiment in which the hold conditions of Figure 3 are configured with a differentiator, Figure 5 A is a graph showing changes in vehicle speed, Figure B , C are waveform diagrams showing a brake operation output and a differentiator output, respectively. 1... Shift position command device, 2... Shift position control device, 3... Actuator, 4... Shift lever, V ₂₁ , V ₁₂ ; V ₃₂ , V ₂₃ ; V ₄₃ , V ₃₄ ... Set vehicle speed value, RY ₁ , RY ₂ , RY ₃ ... Comparator, L ₁ ,
_L2 , _L3 ...speed change command, _H1 , _H2 ...hold circuit, X...contact that provides hold conditions.

Claims (1)

[Scope of utility model registration request] Shifting in simulation operation in which a vehicle speed detection signal is compared with a value corresponding to a set vehicle speed set for each shift up direction and downshift direction of successive shift positions, and a shift command is generated according to the comparison result. In the position command device, the set vehicle speed value is set so that the set value in the downshift direction is larger than the set value in the corresponding upshift direction, and the shift command is changed in the upshift direction in accordance with a change in the vehicle speed detection signal. When the shift-up position command is held, and when the vehicle speed in the decreasing direction becomes equal to or less than the set value set for each of the downshift directions,
A shift position command device for simulation operation, characterized in that the hold state is released and a shift command in a downshift direction can be changed.