KR100982098B1

KR100982098B1 - Actuator's control apparatus and control method thereof

Info

Publication number: KR100982098B1
Application number: KR1020080040639A
Authority: KR
Inventors: 신윤철
Original assignee: 콘티넨탈 오토모티브 시스템 주식회사
Priority date: 2008-04-30
Filing date: 2008-04-30
Publication date: 2010-09-13
Also published as: KR20090114803A

Abstract

The present invention relates to an actuator control apparatus and a control method thereof, the actuator control apparatus comprising: a diagnostic signal transmitting unit for transmitting a diagnostic signal for diagnosing an abnormality of a predetermined actuator mounted on a vehicle; And a signal controller configured to control the diagnostic signal to be transmitted during a minimum threshold period when the actuator is in a stopped state during operation.

Thereby, the incidence of actuator malfunction due to the diagnostic signal can be lowered, thereby minimizing driver inconvenience.

Actuator, diagnostic signal, minimum threshold period, minimum threshold duty rate

Description

Actuator control device and its control method {ACTUATOR'S CONTROL APPARATUS AND CONTROL METHOD THEREOF}

The present invention relates to an actuator control apparatus and a control method thereof, and more particularly, to an actuator control apparatus capable of diagnosing an abnormality of an actuator without unnecessary influence by providing a diagnostic signal only for a minimum period when the actuator is not operated, and a method thereof. It relates to a control method.

Actuator means an electric device such as a motor, a solenoid, or the like mounted on an automobile. Since the actuator is a part that operates frequently according to the operation of each part of the vehicle, it periodically sends out appropriate diagnostic signals and continuously monitors the feedback in order to continuously determine whether there is an abnormality or disconnection.

In the case of a signal for diagnosing an abnormality of a conventional actuator, malfunctions often occur when the vehicle is not operated due to vibration of the vehicle, a change in air pressure, or an error in the actuator, resulting in a decrease in vehicle performance and driver inconvenience.

Accordingly, an object of the present invention is to provide an actuator control apparatus and a control method thereof capable of diagnosing an abnormality of an actuator without affecting the operation of the actuator.

In order to achieve the above object, the actuator control apparatus according to an aspect of the present invention, the diagnostic signal transmission unit for transmitting a diagnostic signal for diagnosing the abnormality of the predetermined actuator mounted on the vehicle; And a signal controller configured to control the diagnostic signal to be transmitted during a minimum threshold period having a minimum threshold duty rate determined by a ratio of a signal running time of a minimum threshold value and a period when the actuator is in a stop state during operation.

delete

In order to achieve the above object, the control method of the actuator control apparatus according to another aspect of the present invention, the step of operating a predetermined actuator mounted to the vehicle; Determining whether the actuator is in operation; When the actuator is in a stopped state during operation, transmitting a diagnostic signal having a minimum threshold duty rate determined by a ratio of a signal running time and a cycle of a minimum threshold value for diagnosing an abnormality of the actuator; And controlling the diagnostic signal to be transmitted during a minimum threshold period.

delete

According to the present invention by the above means, it is possible to diagnose whether the actuator is operating normally under system control by sending out a diagnostic signal having the minimum duty rate for a minimum period while the actuator is not operating.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the present invention.

1 is a block diagram of an actuator control apparatus according to an embodiment of the present invention.

Referring to FIG. 1, an actuator control apparatus according to an embodiment of the present invention includes a diagnostic signal transmitter 100 and a signal controller 300.

The diagnostic signal transmitting unit 100 transmits a signal for diagnosing an operation state of a predetermined actuator mounted on a vehicle, and generates a diagnostic signal for diagnosing an abnormality of the actuator (whether it is normally operated or stopped under overall system control). I can send it out.

Here, the predetermined actuator means a motor, a solenoid, or the like operated by a control signal inside the vehicle. The diagnostic signal is a type of pulse width modulation signal, which will be described later.

The signal controller 300 controls the diagnostic signal transmitted by the diagnostic signal transmitter 100, and the diagnostic signal is intermittently intermittent for a minimum period so as to diagnose the abnormality of the actuator without causing an unnecessary influence on the actuator. Can be controlled to be sent.

That is, the signal controller 300 may control the diagnostic signal to be intermittently transmitted during the minimum threshold period while the actuator is not operating (when in the stop state during operation), wherein the diagnostic signal is output during the minimum threshold period. Meaning that control to be sent out means that a diagnosis signal for diagnosing abnormality of the actuator can be sent out a minimum number of times. This will be described later with reference to FIG. 2.

In addition, the signal controller 300 may control the diagnostic signal transmitted by the diagnostic signal transmitter 100 to have a minimum threshold duty rate. Here, the minimum threshold duty rate means a minimum duty rate value capable of diagnosing an abnormality of the actuator, and the duty rate is a ratio of operating time to a cycle as described below. It can be expressed by the formula of τ / T ". According to this equation, the minimum threshold duty rate value may be determined as the minimum value of 'τ'.

2 is an explanatory view of a diagnostic signal by the actuator control apparatus according to an embodiment of the present invention.

The diagnostic signal transmitted by the diagnostic signal transmitter 100 may be controlled as shown by the signal controller 300.

The diagnostic signal is a type of pulse width modulation signal, as shown in <A> and <B>, and the signal controller 300 is intermittently transmitted during a minimum threshold period when the actuator is stopped during operation. Can be controlled by In other words, while the actuator is not operating, it maintains a 0% duty by default, and is controlled so that the control signal is intermittently transmitted only during the minimum threshold period.

The control means that the diagnostic signal is transmitted during the minimum threshold period means that only the minimum number of times the diagnostic signal for diagnosing the abnormality of the actuator is transmitted. 2 shows that the minimum threshold period is one period, and <B> shows that the minimum threshold period is two periods. That is, as shown, it can be seen that the signal is controlled by the signal controller 300 to transmit a diagnostic signal for one period or two periods (minimum threshold period). The one or two cycles described above are merely examples of the minimum critical period, and may be set to a minimum number suitable for diagnosing the actuator.

Here, it may be expressed as a duty rate, "permission time / period of the signal (duty rate = tau / T)", the minimum threshold duty rate is a minimum value of 'τ' as described above Can be determined.

3 is a flowchart illustrating a control method of an actuator control apparatus according to an embodiment of the present invention.

Hereinafter, an operation procedure of the control method of the actuator control apparatus according to an embodiment of the present invention will be described with reference to FIG. 3.

The predetermined actuator mounted on the vehicle operates (S101).

The signal controller 300 determines whether the actuator is in operation (S102).

When the actuator is in the stopped state during operation, the signal controller 300 transmits a diagnostic signal for diagnosing whether the actuator is abnormal (S103).

The signal controller 300 controls the diagnostic signal to be transmitted during the minimum threshold period (S104). Here, the diagnostic signal can be controlled to have a minimum threshold duty rate.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims It can be understood that

According to the present invention, it is possible to diagnose whether the actuator is operating normally under system control by sending a diagnostic signal having a minimum duty rate for a minimum period of time while the actuator is not operating. It is possible to reduce the incidence of actuator malfunction, thereby minimizing operator inconvenience.

100: diagnostic signal transmitter

300: signal controller

Claims

In the actuator control device,

A diagnostic signal transmitter for transmitting a diagnostic signal for diagnosing an abnormality of a predetermined actuator mounted on a vehicle; And

And an actuator configured to control the diagnostic signal to be transmitted during a minimum threshold period having a minimum threshold duty rate determined by a ratio of a signal running time and a cycle of the minimum threshold value when the actuator is in a stopped state during operation. Control unit.

delete

In the control method of the actuator controller,

Operating a predetermined actuator mounted to a vehicle;

Determining whether the actuator is in operation;

Transmitting a diagnostic signal for diagnosing an abnormality of the actuator when the actuator is in a stopped state during operation; And

And controlling the diagnostic signal to be transmitted during a minimum threshold period having a minimum threshold duty rate determined by a ratio of signal running time and period of the minimum threshold value.

delete