JPS5819915A - Speed controller for vehicle - Google Patents

Abstract

PURPOSE:To avoid the erroneous start of speed control during turning of a steering gear, by providing an operation switch in the steering gear and permitting the operation due to the operation switch when the steering gear is within the range of a prescribed turning angle. CONSTITUTION:A microcomputer 10 calculates the speed of a vehicle by the signal of a distance sensor 17 so store it when an FF13 is set by the operation of a switch 16. If a difference between the calculated speed and a target speed is generated, the internal pressure of an actuator 11 is controlled by a control signal 10A, and the target speed is held by a throttle valve 12. When the handle turning angle is deviated much, the microcomputer 10 does not generate said control output for the operation of the switch 16. However, even if the turning angle becomes large during the control operation, the control operation is not stopped. When the canceling switch 18 is operated during this control operation, the microcomputer 10 outputs a signal 10c to reset the FF13, and a release valve 11b is opened, and the operation force for the throttle valve 12 is lost.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speed control device for a vehicle that is connected to a constant speed network control device that maintains the speed of both vehicles at a target speed.

Such a speed control device is configured to function from the moment the driver performs a set operation, and is disabled when a cancel/&/or set operation is not performed.

Set operation mine, hand/&/ (control control) is set near the driver's hand and nine sets! When the Tosui 9chi is turned on, an electrical storage device generally maintains the control state, and while the Tosui 9chi is being held, the throttle, which is a speed adjustment element, is adjusted according to control parameters such as the current running speed and the H target speed. Fill the valve with 1ml of water. Furthermore, an acceleration switch and a deceleration switch are additionally provided, and the throttle valve is preferentially moved to the acceleration side or the deceleration side.

By the way, these switches are
It must be arranged so that it can be easily operated without being confused with other switches. For this reason, it is being considered to provide an operating switch on the head, where only a horn switch was conventionally provided.

However, these operation switches are designed to prevent Ktl4 from acting when operating the hand lv, especially when driving around a curve or turning direction.
Must.

That is, even if a speed control operation is attempted during a turn, it is unlikely that the speed control operation will be set, and rather, starting an unexpected speed control operation should be avoided.

The present invention was made based on Joki Kensen, and aims to prevent the speed 1IiQI4I from starting during hand-to-turn.

The 11th S showing the next example of the present invention! ! In l, sign 1
0 is Mac, f Microprogram control device I (hereinafter referred to as microcomputer)
, the control program set in the internal program memory is cyclically executed to produce an output signal for operating the speed adjustment element of the fist.

°1 icon 10 is the speed-node element Slo! μ 12
#14 node signal 10A, set signal 10B, and cancel μ signal 10C are generated at output ports 01 to 03 for pneumatic actuator 11 for operatively driving. Set signal 10B sets free differential 0 knob 13, and sets 7 glance deflo! The output of the switch 13 causes the release valve 11b of the pneumatic actuator 11 to close. On the other hand, via the cancel μ signal tocFi or gate 14, the 7-rep flow! 7'l 3worise! Pressure actuator 1
1 release 4111) to open the valve.

When the release valve 11b closes, the pneumatic actuator 11 is adjusted to an internal pressure determined by the introduction ratio of atmospheric pressure and engine intake negative pressure through the controller μ valve 11a.
A mechanical displacement corresponding to the internal pressure is applied to the slot μ valve 12. The 111-node signal 10A determines the on/off signal lea with a period of several tens of milliseconds, and atmospheric pressure and negative pressure are alternately introduced into the actuator due to its on/off.

Between the microcomputer 10 and the actuator 11, 2
Adjustment signal 10A as road code,! :On-o 7 signal 1
A presetter pull-down counter 11A is installed as a turf base in connection with 0a.

When the input data is set, the output signal 10a becomes the reference μ and at the same time the clock oscillates IKIIB.
〉Start down count by a certain period of time bus from 〉. When the count reaches 0, the output signal 10a becomes 0 repμ and the count is stopped. Here, Lebel's time is proportional to the value of Zeon Jibusha-Setsu M No. 10A. Therefore, when the microcomputer 10 outputs the adjustment signal 10A to the output boat group 01 at regular intervals, the on-off ratio of the on-off signal 10a is determined by the value of the sheep adjustment signal 10A.

Microcomputer IO is input port II-4, hand ~ rotation angle switch 15% set switch! 8. Distance sensor 7
, and the signals of the cancel switch 18 are applied.

The hand N rotation angle switch 15 generates a switch signal indicating whether the Σ rotation angle of the hand /&/19 is within a predetermined angle range of plus or minus several tens of degrees, for example 4r. This switch 15 is composed of a button V-meter that responds to the rotation angle of the hand/&/19 and a window comparator that determines its position output.

The set switch 16 is of a self-resetting type, and its operation portion faces the inside of the single chamber of the hand. This switch 16
The on/off signal is transmitted to the microcomputer 10 in the body via a slip ring or optical coupler 20 that transmits signals between the rotating body of the hand μ and the fixed part on the body side.

The distance sensor 17 generates a path μ signal for each unit rotation of the single wheel and provides it to the microcomputer 10.

The cancel .mu. switch 18 generates a signal indicating depression of the brake pedal or clutch pedal .mu., and transmits it to the microcomputer IO and the OR gate 14.

In addition, the above-mentioned output device, input device and microcomputer lO
Appropriate interfaces such as waveform shaping, impedance conversion, and amplification are interposed between the input and output ports.

Further, power supply lines to the microcomputer 10 and each input/output device are not shown.

In the above-described configuration, the microcomputer 10 responds to the operation of the set switch 16 and first performs a free! A set signal 10B is given to the flip-flop 13. At the same time, the speed of the current dormitory in the car is calculated and stored from the pulse interval from the distance sensor 17. After this, if a difference occurs between the actual speed, which changes from time to time, and the stored target vehicle speed, the on/off ratio indicated by the 1li1 node signal 10A is adjusted to eliminate this difference, and the internal pressure of the actuator 11 is Adjust °. As a result, the slot and A/1F12ti* speeds are adjusted by Kf so that the speeds are equal to the target speeds.

However, if the steering wheel rotation angle is too far from the right to the left, the microcomputer 1012 set switch 16
41114, the above-mentioned adjustment output to the actuator 11 is not produced at all. However, even if the hand μ rotation angle increases while the llI4[I operation is being performed, this alone will not stop the adjustment operation.

During the aforementioned adjustment operation, when the cancel μ switch 18 is operated, the microcomputer Io outputs the cancel Iv signal 10e and the %7 lip-flop 13 is activated. Benshi, Slo! To, /I/ for valve 12! I
k Lose one's ability to work.

The above operations are performed centrally by the microcomputer IO according to a control program stored in advance in its program memory. FIG. 2 summarizes known parts of the #1III program and parts unrelated to the gist of the present invention.

In the figure, the microcomputer 10 performs an initial setting μm change 101 upon power-on start, and in this process, the microcomputer 10 selects Fufugu F indicating that it is under control (IK-11!). ! to

Therefore, in step 102, step 10
Branch to 3. In the curve traveling determination step 103, it is determined whether or not the steering wheel rotation angle is within a predetermined range on the input boat 1. If the steering wheel rotation angle is at the reference position IK
On the other hand, the right direction is the control judgment stage! 104 is the hand lv[I! ] Executed only when the angle is within a predetermined area. Then, if the game toss 4 豐chi 16 has been placed in -, then step 105 and subsequent steps are executed.

-1f, output boat 02 or 5 at step W7'105
The SE ν)flW IQB of Lupe μ is output.

In step 1 306, 7lag F is set to 1.

Further, in step *f107, the included velocity data calculated from the four pass μ intervals seen from the distance sensor 17 is stored in the internal timing storage memory.

The program processing is periodically returned to step 102, and after executing step 106, the program branches from step 102 to step 97''10B.

In the cancel IV operation determination step 108, the input capo)
It is determined whether there is a cancel lv operation based on the cancel switch signal given to I4.

If there is no cancel/L/m operation, speed adjustment Y-chin 10
At step 9, the vehicle speed data is calculated and wI4 is calculated in relation to the result and the target vehicle speed data stored at step 107.
The value of the node signal 10A is calculated and output from the output boat group 01.

If you cancel IV! ! l! If there is an operation, the control program branches to step 110 at the processing stage of step 108. In step 11G, reset 9 (6
No. 10G is generated and the 7-lip flop 13 is set.

For this reason, 7st Guflo! The valve 13 is reset to open the release valve 111) in the actuator II. In addition, the cancel switch signal is sent to flip-flop 13 via OR gate 14! J*) is given as input. This ninth.

- The cessation of moderation will be made more secure. 9th #fault 109 is not executed. Since no data is set in the counter 11A, the on/off signal remains at 0 level tvf) and atmospheric pressure is introduced into the actuator 11 by opening the release 1f111). It can be done quickly.

・Although the present invention has been explained above with regard to a single dormitory specific example, the present invention can also be confirmed by the following modifications.

For example, simple changes in program processing can be easily made. For example, the processing order of the curve traveling determination step 103 and the set operation determination step 104 may be reversed.

Further, it is sufficient to set necessary logical conditions for curve driving and set operations, and instead of this logical judgment being performed by the microcomputer 10, a logic judgment circuit may be provided. - As an example 1, for example, let's discuss the signal from the rotation angle sensor 15 and the signal from the coupler 2o.
0 input stage circuit.

Further, the present invention can be applied not only to the reset operation but also to operations such as restart *rf: (return set) % acceleration set.

As described above, the present invention has the advantage that the speed control 1llI nodal track is not erroneously started during the circumferential operation of the boiler.

[Brief explanation of the drawing]

Fig. 1 is an overall configuration diagram showing one embodiment of the present invention, Fig. 2
This is a 70-chart showing the control program of the microcomputer in Figure 1. 10...Microcomputer, 11-...Negative pressure actuator. 12...Throttle valve, 15--Hand # rotation angle sensor, 16--Set switch 1, 17--Distance sensor. 19...Handle 20...Coupler. Agent Bensanju Takashi Mabe Figure 1 Figure 2 09

Claims (1)

[Claims] A speed control device for a vehicle that adjusts a speed control element of a vehicle in accordance with a hook parameter in response to a switch operation, comprising: an operation switch (9) rotatably supported on a vehicle body; 1. A speed control device for a vehicle, characterized in that the speed control device is provided in a steering device, and is operated by the operation switch when the steering device is at a predetermined angle of rotation.