JP2005344881A - Control device of automatic transmission - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control device of an automatic transmission for determining whether or not the automatic transmission is changed. <P>SOLUTION: An ECU executes a program including a step (S1100) for reading out a serial number 1 stored in a memory of a transmission when an ignition switch is turned on (YES in S1000), a step (S1200) for reading out the serial number stored in a memory of the ECU, a step (S1400) for turning on a warning lamp when the serial number 1 coincides with a serial number 2 (YES in S1300), a step (S1500) for reading out characteristic information 1 stored in the memory of the transmission, and a step (S1600) for storing the characteristic information 1 read out of the transmission in the memory of the ECU. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an automatic transmission control device, and more particularly to a control device that determines whether or not an automatic transmission has been changed.

  2. Description of the Related Art Conventionally, an automatic transmission mounted on a vehicle has different characteristics because each component is manufactured with a predetermined accuracy. The characteristics include, for example, variations in characteristics of electrical components such as solenoids and sensors, variations in the shape of each component, and the like. If the control device controls the automatic transmissions having different characteristics in the same manner, the transmission performance may vary depending on the individual automatic transmissions. The following technique is disclosed with respect to such a problem. For example, Japanese Patent Laid-Open No. 5-215206 (Patent Document 1) discloses an electronic control type that prevents variation in the speed change performance of an automatic transmission due to variations in characteristics of a control device, control parts, and the like of an automatic transmission main body. An automatic transmission is disclosed. A characteristic storage device is attached to the automatic transmission main body. The characteristic storage device is provided with storage means for storing unique characteristics such as a control device and control parts provided in the automatic transmission main body. The characteristic storage device and the electronic control device are electrically connected by wiring. The electronic control device is provided with correction means for reading a signal stored in the characteristic storage device and correcting the control content in accordance with the signal.

According to Patent Document 1, since the characteristic storage device is provided in the automatic transmission main body, it is possible to correct the control content by the electronic control device based on the characteristics stored in the automatic transmission main body. That is, the variation in shift performance of the automatic transmission is greatly reduced.
JP-A-5-215206

  However, when the automatic transmission is changed due to a failure of the automatic transmission or the like, the control device needs to perform control in accordance with the characteristic information of the changed automatic transmission. That is, if control is performed based on the same characteristic information as that of the automatic transmission before the change with respect to the automatic transmission after the change, the characteristic information before the change is not compatible with the automatic transmission after the change. There is a problem that the controllability of the automatic transmission is deteriorated. In Patent Document 1, since it is not possible to detect whether or not the automatic transmission has been changed, the above-described problem may occur.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a control device for an automatic transmission that can determine whether or not the automatic transmission has been changed. .

  A control device for an automatic transmission according to a first invention is a control device for an automatic transmission mounted on a vehicle. The automatic transmission and the control device are configured as separate bodies and can be connected to communicate information. The automatic transmission includes a device that stores in advance first information related to individual characteristics of the automatic transmission. The control device includes means for reading first information from the communicably connected automatic transmission, means for storing second information related to the characteristics of the automatic transmission, and the read first information Means for comparing the information with the stored second information.

  According to the first invention, the control device reads the first information related to the individual characteristics of the automatic transmission from the automatic transmissions communicably connected. The control device compares the read first information with the second information stored in the control device. By comparing the first information read from the automatic transmission with the second information stored in the control device, it can be determined whether or not the control device corresponds to the automatic transmission. . That is, the first information and the second information are compared, and if the first information and the second information are different, it can be determined that the control device or the automatic transmission has been changed. Thereby, for example, after the control device or the automatic transmission is changed, it is possible to detect a state in which information related to the control characteristics of the automatic transmission stored in the control device is not updated. Therefore, it is possible to provide a control device for an automatic transmission that can determine whether or not the automatic transmission has been changed.

  In the control device for an automatic transmission according to the second invention, in addition to the configuration of the first invention, the first information and the second information are numbers assigned in advance to the automatic transmission.

  According to the second invention, the control device reads the number assigned in advance from the automatic transmission and compares it with the number of the automatic transmission stored in the control device, whereby the control device or the automatic transmission is changed. It can be determined whether or not.

  In the automatic transmission control apparatus according to the third invention, in addition to the configuration of the first invention, the first information and the second information include a plurality of information related to the control characteristics of the automatic transmission. .

  According to the third invention, the first information and the second information include a plurality of information related to the control characteristics of the automatic transmission. In the control device and the automatic transmission, whether the automatic transmission has been changed more accurately than by judging based on one information by comparing the information related to the control characteristics of a plurality of automatic transmissions stored in each It can be determined whether or not.

  In addition to the configuration of any one of the first to third inventions, the control device for the automatic transmission according to the fourth invention is different from the first information and the second information. Further includes means for determining that does not correspond.

  According to the fourth invention, the control device determines that the control device does not correspond to the automatic transmission if the first information and the second information are different. That is, it can be determined that the control device or the automatic transmission has been changed. Thus, it is possible to detect a state in which information related to the control characteristics of the automatic transmission stored in the control device is not updated after the automatic transmission is changed.

  A control device for an automatic transmission according to a fifth invention is a control device for an automatic transmission mounted on a vehicle. The control device includes a detachable terminal electrically connected to the automatic transmission, means for detecting whether the terminal is electrically connected or disconnected, and the terminal electrically And a means for determining that the control device does not correspond to the automatic transmission when in the disconnected state.

  According to the fifth invention, the control device detects a detachable terminal electrically connected to the automatic transmission and whether the terminal is electrically connected or disconnected. When it is detected that the terminal is electrically disconnected, the control device determines that the control device does not correspond to the automatic transmission. Thus, for example, even when the identification number or information related to the control characteristics of the automatic transmission is not stored on the automatic transmission side, the control device or the automatic transmission is changed and stored in the control device. It is possible to detect a state in which information related to the control characteristics of the automatic transmission is not updated. Therefore, it is possible to provide a control device for an automatic transmission that can determine whether or not the automatic transmission has been changed.

  In addition to the configuration of the fourth or fifth invention, the control device for an automatic transmission according to the sixth invention is means for notifying the determination result when it is determined that the control device does not correspond to the automatic transmission. Further included.

  According to the sixth invention, the control device determines that the control device or the automatic transmission has been changed if the control device does not correspond to the automatic transmission. When the control device determines that the control device or the automatic transmission has been changed, the control device notifies the determination result (for example, turns on a warning lamp). After the control device or automatic transmission is changed, control is performed by notifying the operator or vehicle occupant who has performed the work of changing the control device or automatic transmission that the control device or automatic transmission has been changed. Information relating to the control characteristics of the automatic transmission stored in the device can be prompted to be updated.

  In addition to the configuration of any one of the fourth to sixth inventions, the control device for the automatic transmission according to the seventh aspect of the invention is provided in advance in the automatic transmission when it is determined that the control device and the automatic transmission do not correspond. Means are further included for controlling the automatic transmission using information related to the stored control characteristics.

  According to the seventh invention, when it is determined that the control device does not correspond to the automatic transmission, the control device controls the automatic transmission using information related to control characteristics stored in advance in the automatic transmission. . If the control device does not correspond to the automatic transmission, the control device determines that the control device or the automatic transmission has been changed. For example, after the automatic transmission is changed, information related to the control characteristics is read from the changed automatic transmission, and information related to the control characteristics of the automatic transmission before the change stored in the control device is updated. The control device can control the automatic transmission based on information related to the changed control characteristics. Since the information stored in the control device and the information stored in the automatic transmission can be made to correspond to each other, it is possible to suppress deterioration in controllability with respect to the automatic transmission after the change.

  According to an eighth aspect of the present invention, there is provided a control device for an automatic transmission, in addition to the configuration of any one of the first to seventh aspects of the invention, when information related to control characteristics stored in advance in the automatic transmission cannot be read The apparatus further includes means for controlling the automatic transmission using information that is stored in advance in the apparatus and serves as a reference for the control characteristics of the automatic transmission.

  According to the eighth aspect of the invention, if the control device cannot read out information related to the control characteristics stored in advance in the automatic transmission, the control device stores information (the reference for the control characteristics of the automatic transmission stored in advance in the control device). For example, the automatic transmission is controlled using the median value of the design. Minimize control deterioration by using the design median when the automatic transmission memory is faulty or when the automatic transmission does not store information related to control characteristics. Can do.

  Hereinafter, an automatic transmission control apparatus according to an embodiment of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

<First Embodiment>
As shown in FIG. 1, transmission 100 is configured as a separate body of ECU (Electronic Control Unit) 200 that is a control device according to the present embodiment. The memory of transmission 100 and ECU 200 are connected so that they can communicate information with each other. The transmission 100 may be a stepped type or a continuously variable type as long as it is an automatic transmission mounted on a vehicle.

  The transmission 100 that is communicably connected to the ECU 200 is provided with a memory 102. The memory 102 stores characteristic information related to the control characteristics of the transmission 100 (hereinafter referred to as characteristic information (1)). “Characteristic information” is not particularly limited, but includes, for example, identification information for identifying transmissions, variations in characteristics of electrical parts such as solenoids and sensors, diameters of orifices provided in hydraulic circuits, and oil passages. It includes a plurality of pieces of information such as variations in hydraulic characteristics due to variations in the shape of parts such as cross-sectional areas, variations in play of frictional engagement elements such as clutches and brakes, and variations in friction coefficient of frictional engagement elements. The characteristic information (1) as described above is detected at the time of manufacture and trial operation of the transmission 100 and stored in the memory 102.

  In addition, a number for identifying a transmission (hereinafter referred to as a serial number (1)) is assigned and stored in advance in the memory 102 as identification information. The “number identifying the transmission” is not particularly limited, but is a number that does not overlap with other transmissions, for example.

  The memory 102 is not particularly limited as long as it is a so-called non-volatile memory that retains stored information without being supplied with power, but is a flash memory, for example.

  ECU 200 includes a CPU (Central Processing Unit) (not shown) and a memory (not shown). ECU 200 stores characteristic information (2) and serial number (2) of connected transmission 100. The characteristic information (2) and the serial number (2) are information stored in the memory in advance when the ECU 200 and the transmission 100 are combined.

  A warning lamp 400 is connected to the ECU 200. The warning lamp 400 is provided at a predetermined position on the instrument panel of the driver's seat, but is not particularly limited. The warning lamp 400 is not particularly limited as long as it is a device capable of notifying an occupant. For example, an alarm buzzer may be used.

  With reference to FIG. 2, a control structure of a program executed by ECU 200 which is the control device for the automatic transmission according to the present embodiment will be described.

  In step (hereinafter, step is referred to as S) 1000, ECU 200 determines whether or not the ignition switch is turned on. If the ignition switch is turned on (YES in S1000), the process proceeds to S1100. If not (NO in S1000), the process waits until the ignition switch is turned on.

  In S1100, ECU 200 reads serial number (1) stored in memory 102 of transmission 100.

  In S1200, ECU 200 reads the serial number stored in the memory of ECU 200. Note that the order of S1100 and S1200 may be reversed.

  In S1300, ECU 200 determines whether serial number (1) and serial number (2) match. If serial number (1) and serial number (2) match (YES in S1300), the process ends. If not (NO in S1300), the process proceeds to S1400.

  In S1400, ECU 200 turns on warning lamp 400.

  In S1500, ECU 200 reads characteristic information (1) stored in memory 102 of transmission 100.

  In S1600, ECU 200 stores the characteristic information (1) read from transmission 100 in the memory.

  The operation of ECU 200 that is the control device for the automatic transmission according to the present embodiment based on the above-described structure and flowchart will be described.

  When the driver turns on the ignition switch (YES in S1000), serial number (1) is read from memory 102 of transmission 100 (S1100). On the other hand, the serial number (2) stored in the memory of the ECU 200 is read (S1200). If serial number (1) and serial number (2) are different (NO in S1300), ECU 200 determines that ECU 200 and transmission 100 do not correspond. That is, ECU 200 determines that ECU 200 or transmission 100 has been changed. Therefore, the ECU 200 turns on the warning lamp 400 (S1400). Thereafter, the ECU 200 reads the characteristic information (1) from the memory 102 of the transmission 100 (S1500), and updates the characteristic information (2) stored in the memory of the ECU 200 to the characteristic information (1) (S1600). After the characteristic information (2) stored in the memory of the ECU 200 is updated, the ECU 200 controls the transmission 100 based on the updated characteristic information (1).

  As described above, the automatic transmission control device according to the present embodiment compares the serial number (1) read from the transmission memory with the serial number (2) stored in the ECU. Thus, it can be determined whether or not the transmission has been changed. That is, the serial numbers are compared, and if the serial numbers are different, it is determined that the ECU and the transmission do not correspond. That is, it can be determined that the ECU or the transmission has been changed. Thus, it is possible to detect a state in which the characteristic information stored in the ECU is not updated after the ECU or the transmission is changed. Therefore, it is possible to provide a control device for an automatic transmission that can determine whether or not the automatic transmission has been changed.

  Further, when it is determined that the ECU or the transmission has been changed, the ECU controls the transmission using the characteristic information stored in advance in the transmission memory. That is, after the ECU or the transmission is changed, the characteristic information is read from the memory of the transmission after the change, and the characteristic information before the change stored in the ECU is updated. Thus, the ECU can control the transmission based on the changed characteristic information. Therefore, the deterioration of controllability can be suppressed by making the characteristic information stored in the ECU correspond to the characteristic information stored in the memory of the transmission.

  In the present embodiment, when it is detected that the ignition switch is in the on state, it is determined whether or not the ECU and the transmission correspond to each other, but there is no particular limitation. For example, you may determine whether ECU and a transmission respond | correspond for every predetermined period.

  Then, if the characteristic information stored in advance in the transmission cannot be read, the ECU may control the transmission using information that serves as a reference for the control characteristics of the transmission stored in advance in the ECU. The information serving as a reference for the control characteristics is, for example, a design median value. Minimize control degradation by controlling the transmission using the design median when the transmission memory is faulty or when the transmission does not store information related to control characteristics be able to.

<Second Embodiment>
Hereinafter, the control apparatus for the automatic transmission according to the second embodiment will be described. The configurations of the automatic transmission and the control device in the present embodiment are the same as the configurations of the automatic transmission and the control device in the first embodiment described above. They are given the same reference numerals. Their functions are the same. Therefore, detailed description thereof will not be repeated here.

  With reference to FIG. 3, a control structure of a program executed by ECU 200 which is the control device for the automatic transmission according to the present embodiment will be described. In the flowchart shown in FIG. 3, the same steps as those in the flowchart shown in FIG. 2 are given the same step numbers. The processing is the same for them. Therefore, detailed description thereof will not be repeated here.

  In S2100, ECU 200 reads characteristic information (1) from memory 102 of transmission 100.

  In S2200, ECU 200 reads characteristic information (2) stored in the memory of ECU 200. Note that the processing order of S2100 and S2200 may be reversed. The characteristic information (1) and the characteristic information (2) are a plurality of pieces of information related to the control characteristics corresponding to each other.

  In S2300, ECU 200 determines whether or not characteristic information (1) and characteristic information (2) match. If characteristic information (1) matches characteristic information (2) (YES in S2300), the process ends. If not (NO in S2300), the process proceeds to S1400.

  The operation of ECU 200 that is the control device for the automatic transmission according to the present embodiment based on the above-described structure and flowchart will be described.

  When the driver turns on the ignition switch (YES in S1000), characteristic information (1) is read from memory 102 of transmission 100 (S2100). On the other hand, the characteristic information (2) stored in the memory of the ECU 200 is read (S2200). If characteristic information (1) and characteristic information (2) are different (NO in S2300), ECU 200 determines that ECU 200 and transmission 100 do not correspond. That is, ECU 200 determines that ECU 200 or transmission 100 has been changed. Therefore, the ECU 200 turns on the warning lamp 400 (S1400). Thereafter, ECU 200 reads characteristic information (1) from transmission 100 (S1500), and updates characteristic information (2) stored in the memory of ECU 200 to characteristic information (1) (S1600). After the characteristic information (2) stored in the memory of the ECU 200 is updated, the ECU 200 controls the transmission 100 based on the updated characteristic information (1).

  As described above, according to the control device for an automatic transmission according to the present embodiment, the characteristic information (1) read from the memory of the transmission is compared with the characteristic information (2) stored in the ECU. Thus, it can be determined whether or not the ECU and the transmission correspond. That is, comparing the characteristic information (1) and the characteristic information (2), if the characteristic information (1) and the characteristic information (2) are different, it can be determined that the ECU or the transmission has been changed. Therefore, it is possible to detect a state in which the characteristic information stored in the ECU is not updated after the ECU or the transmission is changed. Therefore, it is possible to provide a control device for an automatic transmission that can determine whether or not the automatic transmission has been changed.

  Preferably, in the comparison between the characteristic information (1) and the characteristic information (2), it is desirable to compare two or more pieces of information corresponding to each other. In this way, it is possible to determine with higher accuracy than determining whether the ECU and the transmission correspond based on one piece of information.

  Further, when it is determined that the ECU and the transmission do not correspond, the ECU controls the transmission using characteristic information stored in advance in the transmission. That is, after the transmission is changed, the characteristic information is read from the changed transmission, and the characteristic information before the change stored in the ECU is updated. Thus, the ECU can control the transmission based on the changed characteristic information. Since the characteristic information stored in the ECU and the characteristic information stored in the transmission can be associated with each other, it is possible to suppress deterioration in controllability of the transmission after the change.

  Then, if the characteristic information stored in advance in the transmission cannot be read, the ECU may control the transmission using information that serves as a reference for the control characteristics of the transmission stored in advance in the ECU. The information serving as a reference for the control characteristics is, for example, a design median value. Minimize control degradation by controlling the transmission using the design median when the transmission memory is faulty or when the transmission does not store information related to control characteristics be able to.

<Third Embodiment>
Hereinafter, the control apparatus for the automatic transmission according to the third embodiment will be described.

  As shown in FIG. 4, transmission 100 is configured as a separate body of ECU 200. The transmission 100 may be a stepped type or a continuously variable type as long as it is an automatic transmission mounted on a vehicle. A determination circuit 300 is provided between the memory of the transmission 100 and the ECU 200. The control device according to the present embodiment is realized by ECU 200 and determination circuit 300.

  A connector 106 is provided in the memory of the transmission 100 that is communicably connected to the ECU 200. A detachable terminal 104 is attached to the connector 106. When the terminal 104 is attached, the connector 106 and the terminal 104 are electrically connected.

  The terminal 104 is connected to one end of a control signal line 112 that transmits a control signal to and from the ECU 200 and a detection signal line 110 that transmits a detection signal to the determination circuit 300. When the terminal 104 is attached to the connector 106, the detection signal line 110 is connected to one end of the coil 108 via the terminal 104. The other end of the coil 108 is grounded.

  ECU 200 transmits a control signal to the memory of transmission 100 via control signal line 112. Based on the control signal transmitted from the ECU 200, the memory of the transmission 100 is controlled to a desired power transmission state by operating a hydraulic circuit provided therein.

  The determination circuit 300 is a circuit that determines whether or not the terminal 104 is connected to the connector 106. The determination circuit 300 includes a 12V power supply 302, a 6V power supply 306, a comparator 304, and resistors 308, 310, and 312. The detection signal line 110 is connected to the + side node of the comparator 304. A power supply 302 is further connected to the node on the + side of the comparator 304 via a resistor 308. On the other hand, the power source 306 is grounded via resistors 310 and 312 connected in series, and the negative node of the comparator 304 is connected between the resistors 310 and 312.

  The comparator 304 compares the voltage at the + side node with the voltage at the − side node. Then, the comparator 304 outputs either the Hi signal or the Low signal in accordance with the comparison result. That is, in the present embodiment, for example, comparator 304 outputs a Hi signal when the voltage at the + side node is higher than the voltage at the − side node, and the voltage at the − side node is equal to that at the + side node. When it is higher than the voltage, a Low signal is output.

  In the present embodiment, a voltage of 6 V is applied to the negative side node of the comparator 304. At this time, when the terminal 104 and the connector 106 are electrically connected, the other end of the coil 108 is grounded, so that no voltage is applied to the + side node of the comparator 304. Therefore, the comparator 304 outputs a Low signal.

  On the other hand, when the terminal 104 and the connector 106 are electrically disconnected, the connector 104 and the coil 108 are disconnected. Therefore, a voltage of 12V is applied to the + side node of the comparator 304. Therefore, the comparator 304 outputs a Hi signal.

  One of the Hi signal and the Low signal output from the determination circuit 300 is input to the ECU 200.

  With reference to FIG. 5, a control structure of a program executed by ECU 200 in the present embodiment will be described.

  In S3000, ECU 200 determines whether or not the detection signal output from determination circuit 300 is a Hi signal. If the detection signal output from determination circuit 300 is a Hi signal (YES in S3000), the process proceeds to S3100. If not (NO in S3000), the process ends.

  In S3100, ECU 200 determines that transmission 100 may have been changed.

  In S3200, ECU 200 turns on warning lamp 400.

  The operations of ECU 200 and determination circuit 300 in the present embodiment based on the above-described structure and flowchart will be described.

  When the operator removes the terminal 104 from the connector 106, a voltage of 12V is applied to the node on the + side of the comparator 304. When a voltage of 12 V is applied to the positive side node of the comparator 304, the detection signal output from the determination circuit 300 to the ECU 200 is switched from the Low signal to the Hi signal. When the Hi signal is detected (YES in S3000), it is determined that ECU 200 and transmission 100 may not correspond. That is, it is determined that ECU 200 or transmission 100 may have been changed. Then, the warning lamp 400 is turned on.

  By turning on the warning lamp 400, it is possible to notify the driver or the worker that the ECU 200 or the transmission 100 may be changed, and the characteristic information stored in the ECU 200 needs to be updated. “Characteristic information” is not particularly limited, but for example, variations in the characteristics of electrical components such as solenoids and sensors, the diameter of the orifices provided in the hydraulic circuit, and the shape of the parts such as the cross-sectional area of the oil passage This includes information such as variations in hydraulic characteristics due to variations in friction, variations in play of friction engagement elements such as clutches and brakes, variations in friction coefficient of friction engagement elements, and the like.

  At this time, when the characteristic information related to the control characteristic of the transmission 100 is stored in the memory of the transmission 100 in advance, the characteristic information stored in the ECU 200 is updated based on the characteristic information stored in the transmission 100. May be.

  That is, when the terminal 106 is connected to the connector 106 again, the detection signal output from the determination circuit 300 to the ECU 200 is switched from the Hi signal to the Low signal. When the Low signal is detected, ECU 200 determines that terminal 104 is connected to connector 106 and reads characteristic information from transmission 100. ECU 200 can control transmission 100 based on the read characteristic information.

  As described above, according to the control device for an automatic transmission according to the present embodiment, the ECU includes a detachable terminal that is electrically connected to the transmission, and a terminal that is electrically connected or disconnected. It is detected whether it is in a state. When it is detected that the terminal is electrically disconnected, the ECU determines that the ECU and the transmission do not correspond. That is, it is determined that the ECU or the transmission has been changed. As a result, even when the serial number and characteristic information are not stored on the transmission side, it is detected that the information related to the control characteristics of the transmission stored in the ECU is not updated after the transmission is changed. can do. Therefore, it is possible to provide a control device for an automatic transmission that can determine whether or not the automatic transmission has been changed.

  In the present embodiment, when it is detected that the terminal has been removed from the connector, it is determined that the ECU or the transmission has been changed. For example, a battery that supplies power to the ECU is disconnected from the ECU. Then, after the power supply from the battery is restored, the ECU may determine that the ECU or the transmission may have been changed.

  Further, if the characteristic information stored in advance in the transmission cannot be read, the ECU may control the transmission using information that serves as a reference for the control characteristics of the transmission stored in advance in the ECU. The information serving as a reference for the control characteristics is, for example, a design median value. The ECU controls the transmission using the design median value when the transmission memory is faulty or information related to the control characteristics is not stored in the transmission. Can be.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

It is a block diagram which shows the structure of the control apparatus of the automatic transmission which concerns on 1st Embodiment. It is a flowchart which shows the control structure of the program performed by ECU which is a control apparatus of the automatic transmission which concerns on 1st Embodiment. It is a flowchart which shows the control structure of the program performed by ECU which is a control apparatus of the automatic transmission which concerns on 2nd Embodiment. It is a block diagram which shows the structure of the control apparatus of the automatic transmission which concerns on 3rd Embodiment. In 3rd Embodiment, it is a flowchart which shows the control structure of the program performed by ECU.

Explanation of symbols

  100 transmission, 102 memory, 104, 106 connector, 108 coil, 110 detection signal line, 112 control signal line, 200 ECU, 202 transmission characteristic information, 204 transmission serial number, 300 judgment circuit, 302,306 power supply, 304 comparator, 308, 310, 312 Resistance, 400 Warning lamp.

Claims (8)

A control device for an automatic transmission mounted on a vehicle, wherein the automatic transmission and the control device are configured as separate bodies and connectable so as to communicate information. And a device for preliminarily storing the first information related to the characteristics of the individual automatic transmission,
Means for reading out the first information from a communicably connected automatic transmission;
Means for storing second information relating to characteristics of the automatic transmission;
A control device for an automatic transmission, comprising: means for comparing the read first information and the stored second information.   The control apparatus for an automatic transmission according to claim 1, wherein the first information and the second information are numbers given in advance to the automatic transmission.   2. The automatic transmission control device according to claim 1, wherein the first information and the second information include a plurality of pieces of information related to control characteristics of the automatic transmission.   The control device further includes means for determining that the control device and the automatic transmission do not correspond if the first information and the second information are different. A control device for an automatic transmission according to claim 1. A control device for an automatic transmission mounted on a vehicle,
A detachable terminal electrically connected to the automatic transmission;
Means for detecting whether the terminal is electrically connected or disconnected; and
A control device for an automatic transmission including means for determining that the control device does not correspond to the automatic transmission when the terminal is electrically disconnected.   The control apparatus for an automatic transmission according to claim 4 or 5, further comprising means for notifying the determination result when it is determined that the control apparatus and the automatic transmission do not correspond to each other. .   When it is determined that the control device does not correspond to the automatic transmission, the control device is configured to control the automatic transmission using information related to control characteristics stored in advance in the automatic transmission. The control apparatus for an automatic transmission according to any one of claims 4 to 6, further comprising means.   If the control device is unable to read information related to the control characteristics stored in advance in the automatic transmission, the control device uses the information that serves as a reference for the control characteristics of the automatic transmission stored in advance in the control device. The control device for an automatic transmission according to any one of claims 1 to 7, further comprising means for controlling the automatic transmission.

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