JP2010060125A - Device and method for controlling transmission - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To appropriately learn a value indicating a reference position of a shift direction of a shift lever operated by a driver based on output values of a shift sensor and a select sensor. <P>SOLUTION: When two conditions where a select direction position SE(n) of this cycle is different from a select direction position SE(n-1) of a previous cycle and where a shift position SP(n-1) of the previous cycle is a position M are achieved (Yes in S202, Yes in S206), an HV-ECU calculates and stores a learning value of a reference voltage value VC in this cycle (S208, S210). When at least either one of the two conditions is not achieved (No in S202, No in S206), learning of the reference voltage value VC in this cycle is not performed (S212). <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a technique for detecting the position of a shift lever used for switching a shift position of a transmission, and more particularly to a technique for learning the position of a shift lever.

  2. Description of the Related Art Conventionally, a shift switching mechanism that switches a shift position of an automatic transmission according to an operation of a shift lever by a driver is known that includes an electric motor (for example, a DC motor) as a power source for shift position switching.

  According to such a shift switching mechanism, the shift lever and the shift switching mechanism are mechanically connected like a general switching mechanism that switches the shift position of the automatic transmission directly by the operating force of the shift lever by the driver. Since it is not necessary, there is no restriction on the layout when mounting each of these parts on a vehicle, and the degree of freedom in design can be increased.

  As a shift lever in such a shift switching mechanism, a momentary type shift lever may be used. In the momentary type shift lever, the R, N, D, and B travel positions are switched to and from the P position by operation of the shift lever starting from the neutral position. The shift lever is provided with a shift sensor that detects the movement of the operation in the vertical direction (shift direction) and a select sensor that detects the movement of the operation in the horizontal direction (select direction), and shifts based on the output from these sensors. The position is confirmed.

  Japanese Patent Laying-Open No. 2005-7993 (Patent Document 1) discloses a shift operation device for a transmission that appropriately responds to a driver's request in a shift operation device having a momentary function. The shift operation device of the transmission includes a path that reaches a plurality of shift positions, and a momentary movable unit that is operated so as to move the path by the driver. The movable portion is held at a predetermined neutral position when not operated by the driver. The shift operating device includes a recognizing means for recognizing a shift position requested by the driver and a power corresponding to the recognized shift position by holding the movable portion at the shift position for a predetermined recognition time. Output means for outputting a control signal for the transmission so as to be in a transmission state. The path includes a neutral position, a first shift position that is one of the plurality of shift positions, and a second position that is provided between the neutral position and the first shift position that is one of the plurality of shift positions. And a shift position. When it is recognized that the vehicle is in the first shift position, the power transmission state by the transmission is set to the first state. When it is recognized that it is in the second shift position, the power transmission state by the transmission is set to a second state different from the first state. The shift operation device further includes setting means for setting the recognition time according to the moving direction of the movable part in the route.

According to the shift operation device disclosed in Japanese Patent Laying-Open No. 2005-7993, the driver performs an operation based on a request for changing the power transmission state by the transmission to the second state, and the movable portion is positioned at the second shift position. The time for recognizing the second shift position can be set separately for the first case where the movable portion is positioned at the second shift position when returning to the neutral position. Therefore, it is possible to appropriately recognize the driver's request based on the time during which the movable part is held at the second shift position.
JP 2005-7993 A

  By the way, although the position of the shift lever is determined based on the output voltage values of the shift sensor and the select sensor, the output voltage value of each sensor varies depending on the temperature characteristics of each sensor and the variation in the assembly position. Therefore, for example, it is determined that the shift lever is moving in the select direction based on the output voltage value of the select sensor, and the output voltage value of the shift sensor when it is determined that the shift direction is moving is determined in the shift direction of the shift lever. It is desirable to always learn as a value indicating the reference position.

  However, in such learning, if noise occurs in the output voltage value of each sensor during learning, it is possible that learning is performed in an unintended state and the learned value is significantly shifted from an appropriate value. . However, Patent Document 1 does not mention any technique for solving such a problem.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to determine a value indicating a reference position of a movable part operated by a driver based on output values of a shift sensor and a select sensor. It is an object to provide a transmission control device and a control method that can be appropriately learned.

  A transmission control apparatus according to a first aspect of the invention includes a vehicle having a movable portion that is operated by a driver so as to move along a shift gate including a first path and a second path, each having a plurality of shift positions. The transmission provided in the vehicle is controlled. The first path extends in the first direction, the second path is connected to the first path, and extends in a second direction different from the first direction. The control device includes a first sensor that outputs a first output value corresponding to the position of the movable part in the first direction, and a second sensor that outputs a second output value corresponding to the position of the movable part in the second direction. And a control unit connected to the first sensor and the second sensor. A control unit configured to calculate a first shift position of the movable part in the first direction based on a reference value indicating that the movable part is located at a reference position in the first direction and a first output value; The requested shift requested by the driver on the basis of the second calculation unit that calculates the second shift position in the second direction of the movable unit based on the second output value, and the first shift position and the second shift position. A third calculation unit that calculates a position; and a learning unit that determines whether or not a predetermined learning condition is satisfied and that learns a reference value when the learning condition is satisfied. The learning condition is that the movable part is estimated to be on the second path based on the second output value at the first time point and the second output value at the second time point that is later than the first time point. Both of the first condition and the second condition that either the requested shift position at the first time point or the requested shift position at the second time point is a predetermined shift position on the second path are It is a condition that it has been established.

  In the control device according to the second invention, in addition to the configuration of the first invention, the second condition is a condition that the requested shift position at the first time point is a predetermined shift position.

  In the control device according to the third invention, in addition to the configuration of the first invention, the second condition is a condition that the requested shift position at the second time point is a predetermined shift position.

  In the control device according to the fourth invention, in addition to the configuration of the third invention, the second condition is a condition that the requested shift position after the second time point is a predetermined shift position continuously for a predetermined time. It is.

  In the control device according to the fifth aspect, the first condition is a condition that the second output value at the first time point is different from the second output value at the second time point, and the second shift position at the first time point and the second output value. One of the conditions is that the second shift position at two time points is different.

  In the control device according to the sixth invention, in addition to the configuration of any one of the first to fifth inventions, the learning unit learns the reference value at the second time point at the second time point when the learning condition is satisfied. When the learning condition is not satisfied, the reference value is not learned at the second time point.

  In the control device according to the seventh aspect of the invention, in addition to the configuration of any one of the first to sixth aspects, the control unit performs calculations at a predetermined cycle. The time difference between the first time point and the second time point is a predetermined period.

  In the control device according to the eighth invention, in addition to the configuration of any one of the first to seventh inventions, the movable portion is a momentary movable portion that is held in a neutral position when not operated by the driver. The second path has one end connected to the first path and a neutral position at the other end. The predetermined shift position is a neutral position.

  In the control device according to the ninth invention, in addition to the configuration of any one of the first to eighth inventions, the learning unit adds the first output value at the second time point and the reference value before the second time point. The reference value is learned based on the history.

  In the control device according to the tenth invention, in addition to the configuration of any one of the first to ninth inventions, the first output value when the movable part is moving on the second path is the first output value on the first path. It has a characteristic indicating a first output value when the movable part is located at a connection position with the two paths. The reference position is a connection position with the second path in the first path.

  The control method according to the eleventh invention has the same requirements as the control device according to the first invention.

  According to the present invention, for example, when the movable part is not on the second path, the second output value is changed between the first time point and the second time point due to the noise generated in the second output value. When it is estimated that the vehicle is on the second route, the first condition is satisfied. However, since the movable portion is not on the second path at the first time point or the second time point, the required shift position at the first time point or the second time point is a predetermined shift position (for example, neutral position) on the second path. The second condition is not satisfied. Therefore, the learning condition is not satisfied, and the reference value is not learned. Thereby, since learning is suppressed in a state where the movable portion is not on the second path, the reference value indicating the reference position can be appropriately learned.

  Hereinafter, embodiments 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>
FIG. 1 shows a configuration of a shift control system 10 according to the present embodiment. The shift control system 10 according to the present embodiment functions as a shift-by-wire system that switches the shift position of the transmission mechanism 2 mounted on the vehicle by electrical control. In the present embodiment, a hybrid vehicle will be described as an example of a vehicle on which shift control system 10 is mounted. However, a vehicle on which shift control system 10 that switches the shift position of a transmission using at least the driving force of an actuator is mounted. If so, it is not particularly limited to a hybrid vehicle. In the present embodiment, transmission mechanism 2 is a transmission configured with a continuously variable transmission mechanism, but may be configured with a stepped transmission mechanism.

  The shift control system 10 includes a P switch 20, a shift lever mechanism 26, an HV (Hybrid Vehicle) -ECU (Electronic Control Unit) 30, a parking control device (hereinafter also referred to as “P-ECU”) 40, an actuator 42, an encoder 46, and a shift switching mechanism 48.

  The P switch 20 is a switch for switching the shift position of the transmission mechanism 2 between a parking position (hereinafter also referred to as “P position”) and a position other than parking (hereinafter also referred to as “non-P position”). The driver inputs an instruction to switch the shift position to the P position through the P switch 20. The P switch 20 may be a momentary switch. A P command signal indicating an instruction from the driver received by the P switch 20 is transmitted to the HV-ECU 30. In addition, the shift position may be switched from the non-P position to the P position by means other than the P switch 20 described above.

  The shift lever mechanism 26 includes a shift gate 260, a shift lever 270, a shift sensor 22, and a select sensor 24.

  The shift lever 270 is maintained in a neutral position (hereinafter also referred to as “M position”) when not operated by the driver, and is moved along a passage formed in the shift gate 260 when operated by the driver. Shift lever. Since the structure and operation of the momentary type shift lever are well-known techniques, detailed description thereof will not be given.

  The shift gate 260 includes a forward travel position (hereinafter referred to as “D position”), a reverse travel position (hereinafter referred to as “R position”), a neutral position (hereinafter referred to as “N position”), and a brake position (hereinafter referred to as “B position”). The position corresponding to the shift position such as) is preset.

  The shift sensor 22 detects a shift voltage value Vsh corresponding to the position of the shift lever 270 in the shift direction (see FIG. 1), and outputs the detection result to the HV-ECU 30.

  The select sensor 24 detects a select voltage value Vse corresponding to the position of the shift lever 270 in the select direction (see FIG. 1), and outputs the detection result to the HV-ECU 30.

  The HV-ECU 30 comprehensively manages the operation of the shift control system 10 based on the outputs from the P switch 20, the shift sensor 22 and the select sensor 24.

  The HV-ECU 30 determines the position of the shift lever 270 in the shift gate 260 (hereinafter also referred to as “shift position SP”) based on the shift voltage value Vsh from the shift sensor 22 and the select voltage value Vse from the select sensor 24. judge. This shift position SP is a shift position requested by the driver.

  The HV-ECU 30 determines the shift position SP when the determined shift position SP is maintained at the same position for a predetermined time. The HV-ECU 30 calculates the required torque based on the vehicle information (for example, the accelerator opening degree) when the determined shift position SP is any one of D, N, R, and B. A torque command corresponding to the shift position and the required torque is transmitted to the transmission mechanism 2 and a non-P request signal is transmitted to the P-ECU 40. Thereby, the shift position of the transmission mechanism 2 is switched to the determined shift position.

  When the HV-ECU 30 receives the P command signal from the P switch 20, the HV-ECU 30 transmits a P request signal to the P-ECU 40.

  P-ECU 40 is connected to HV-ECU 30 so that they can communicate with each other. When the P-ECU 40 receives the P request signal or the non-P request signal from the HV-ECU 30, the operation of the actuator 42 that drives the shift switching mechanism 48 to switch the shift position between the P position and the non-P position. And a signal indicating whether the current shift position is the P position or the non-P position is transmitted to the HV-ECU 30.

  The actuator 42 is configured by a switched reluctance motor (hereinafter referred to as “SR motor”), and receives an actuator control signal from the P-ECU 40 to drive the shift switching mechanism 48. In the present invention, the actuator 42 is described as being configured by a motor, but may be configured by hydraulic pressure.

  The encoder 46 rotates integrally with the actuator 42 and detects the rotation state of the SR motor. The encoder 46 of the present embodiment is a rotary encoder that outputs A-phase, B-phase, and Z-phase signals. The P-ECU 40 obtains a signal output from the encoder 46, grasps the rotation status of the SR motor, and controls energization for driving the SR motor.

  The shift lever mechanism 26 will be described in detail with reference to FIG. The shift gate 260 is formed along the select direction and is connected to the first shift path 262 and the second shift path 264, each of which is formed along the shift direction. And a select path 266.

  As described above, shift lever 270 is maintained at the M position when not operated by the driver, and is moved along a path formed in shift gate 260 by the operation of the driver.

  The first shift path 262 is provided with an R position at the upper end position, a D position at the lower end position, and an N position at the center position (connection position with the select path 266).

  In the second shift path 264, an M position is provided at the upper end position (connection position with the select path 266), and a B position is provided at the lower end position.

  The select path 266 connects the N position of the first shift path 262 and the M position of the second shift path 264.

  The select voltage value Vse (the output voltage value of the select sensor 24) fluctuates between the minimum value Vsemin and the maximum value Vsemax in a normal state where no noise occurs, and the shift lever 270 is positioned to the left of the select path 266. Large value.

  The shift voltage value Vsh (the output voltage value of the shift sensor 22) fluctuates between the minimum value Vshmin and the maximum value Vshmax in a normal state where no noise is generated, and the shift lever 270 is positioned below the shift direction. Large value.

  The HV-ECU 30 calculates the position SE in the select direction of the shift lever 270 (hereinafter referred to as “select direction position SE”) based on the select voltage value Vse. Specifically, the HV-ECU 30 stores in advance the selection voltage value Vse when the shift lever 270 is located at the center of the selection path 266 as a threshold value M, and when Vse <M, as shown in FIG. Further, the select direction position SE is calculated as “select L”, and when Vse> M, the select direction position SE is calculated as “select H”.

  Further, HV-ECU 30 calculates shift position SH of shift lever 270 (hereinafter referred to as “shift direction position SH”) based on shift voltage value Vsh. Specifically, the HV-ECU 30 stores in advance the shift voltage value Vsh when the shift lever 270 is positioned on the select path 266 (that is, when positioned at the center of the first shift path 262) as the reference voltage value VC. As shown in FIG. 2, (reference voltage value VC−predetermined value α) is threshold Lo, and (reference voltage value VC + predetermined value β) is threshold Hi, and when Vsh <Lo, the shift direction position SH is calculated as “shift L”. When Lo <Vsh <Hi, the shift direction position SH is calculated as “shift M”, and when Vsh> Hi, the shift direction position SH is calculated as “shift H”. To do. The reference voltage value VC is a learning target of the present invention.

  The HV-ECU 30 calculates the shift position SP based on the select direction position SE and the shift direction position SH.

  When SE = select L, HV-ECU 30 calculates shift position SP as “N position” when SH = shift M, and calculates shift position SP as “D position” when SH = shift H. , SH = shift L, the shift position SP is calculated as “R position”.

  When SE = select H, HV-ECU 30 calculates shift position SP as “M position” when SH = shift M, and calculates shift position SP as “B position” when SH = shift H. , SH = shift L, the shift position SP is calculated as “EX position”. It should be noted that the “EX position” is not calculated at normal times when no noise is generated.

  Thus, the reference voltage value VC is an important value that serves as a reference when calculating the shift direction position SH for calculating the shift position SP, but when the shift lever 270 is positioned on the select path 266 ( That is, the actual shift voltage value Vsh (when located at the center of the first shift path 262) varies depending on the temperature characteristics of the shift sensor 22, variations in the assembly position, and the like.

  Therefore, the HV-ECU 30 detects a change in the select direction position SE from the select H to the select L or from the select L to the select H (hereinafter, these changes are also simply referred to as “SE change”). When it is estimated that the shift lever 270 is located on the select path 266 (that is, located in the center of the first shift path 262) at the time when the change in SE is detected, the shift voltage at the time when the change in SE is detected. Based on the value Vsh, the reference voltage value VC is learned.

  In this learning, if only the change in SE is detected as a learning permission condition, the learning value may not be an appropriate value.

  For example, when the change of SE is due to the influence of noise of the select voltage value Vse, it is conceivable that the shift lever 270 is not actually located on the select path 266. In such a case, the learning value is not an appropriate value.

  In order to solve this problem, according to the present invention, in addition to the condition that the select direction position SE has changed, the shift position SP before the change of the select direction position SE is the M position located on the select path 266. The condition is that the condition is a learning permission condition, and the learning of the reference voltage value VC is not performed when at least one of these two conditions is not satisfied.

  FIG. 3 shows a functional block diagram of the HV-ECU 30 according to the present embodiment at the time of shift position calculation processing. HV-ECU 30 includes an A / D converter 310, an arithmetic processing unit 320, and a storage unit 330.

  The A / D converter 310 receives the shift voltage value Vsh from the shift sensor 22 and the select voltage value Vse from the select sensor 24, and converts the voltage value (analog value) detected by each sensor into a digital value (hereinafter referred to as “A”). (Also referred to as “/ D value”) and transmitted to the arithmetic processing unit 320. In the following description, the shift voltage value Vsh and the select voltage value Vse are digital values except for the case where they are distinguished from each other, but may be analog values.

  Various information, programs, threshold values M, maps, and the like are stored in the storage unit 330, and data is read or stored from the arithmetic processing unit 320 as necessary. The information stored in the storage unit 330 includes the shift voltage value Vsh, the select voltage value Vse, the reference voltage value VC to be learned, and the history of the shift position SP transmitted from the arithmetic processing unit 320. included.

  Arithmetic processing unit 320 includes a shift position calculation processing unit 321 and a periodic timer 322.

  The shift position calculation processing unit 321 performs the shift position SP calculation process and the above-described reference voltage value VC learning process at the cycle time TC set by the cycle timer 322.

  Both the shift position calculation processing unit 321 and the cycle timer 322 will be described as functioning as software realized by the CPU that is the arithmetic processing unit 320 executing the program stored in the storage unit 330. It may be realized by hardware. Such a program is recorded on a storage medium and mounted on the vehicle.

  FIG. 4 shows a functional block diagram of the shift position calculation processing unit 321. The shift position calculation processing unit 321 includes a shift direction position calculation unit 321A, a selection direction position calculation unit 321B, a latch processing unit 321C, a shift direction learning determination unit 321D, a shift direction learning value calculation unit 321E, and a latch processing unit. 321F, a shift lever position calculation unit 321G, and a latch processing unit 321H.

  In the following description, the current operation cycle is n-th, and the shift voltage value Vsh, select voltage value Vse, shift direction position SH, select direction position SE, shift position SP detected or calculated in the nth cycle are described. Are described as Vsh (n), Vse (n), SH (n), SE (n), and SP (n), respectively. Further, the shift voltage value Vsh, the select voltage value Vse, the shift direction position SH, the select direction position SE, and the shift position SP detected or calculated in the previous cycle are respectively expressed as Vsh (n−1) and Vse (n−1). , SH (n-1), SE (n-1), and SP (n-1).

  The shift direction position calculation unit 321A calculates the shift direction position SH (n) based on Vsh (n). Specifically, the shift direction position calculation unit 321A reads the previous reference voltage value VC (N−1) stored in the storage unit 330 in the previous or previous cycle by the latch processing unit 321F, and reads VC (N− 1) Assuming that −α = Lo and VC (N−1) + β = Hi, SH (n) = shift L when Vsh (n) <Lo, SH (n) when Lo <Vsh (n) <Hi When SH = shift M, Vsh (n)> Hi, SH (n) = shift H is calculated. The calculated SH (n) is transmitted to the shift lever position calculation unit 321G.

  The select direction position calculation unit 321B calculates the select direction position SE (n) based on Vse (n). Specifically, the select direction position calculation unit 321B calculates SE (n) = select L when Vse (n) <M and SE (n) = select H when Vse (n)> M. The calculated SE (n) is transmitted to the shift direction learning determination unit 321D and the shift lever position calculation unit 321G, and is described in the storage unit 330 by the latch processing unit 321C.

  The shift lever position calculation unit 321G calculates the shift position SP (n) based on the shift direction position SH (n) and the select direction position SE (n). Specifically, the shift lever position calculation unit 321G has SP (n) = N and SH (n) = shift H when SH (n) = shift M and SE (n) = select L. If SP (n) = D and SH (n) = shift L, then SP (n) = R is calculated. When SE (n) = select H, shift lever position calculation unit 321G has SP (n) = M when SH (n) = shift M, and SP (n) when SH (n) = shift H. When SP = B and SH (n) = shift L, SP (n) = EX is calculated. The calculated SP (n) is written in the storage unit 330 by the latch processing unit 321H. Note that SP (n) is transmitted to a shift position determination unit (not shown) and written in the storage unit 330 by the latch processing unit 321H.

  The shift direction learning determination unit 321D selects the select direction position SE (n) calculated in the current cycle, and the select direction position SE (n−1) calculated in the previous cycle and stored in the storage unit 330 by the latch processing unit 321C. ) And the second condition that the shift position SP (n−1) calculated in the previous cycle and described in the storage unit 330 by the latch processing unit 321H is the M position is satisfied. The determination result is transmitted to the shift direction learning value calculation unit 321E.

  The shift direction learning value calculation unit 321E learns the reference voltage value VC when both the first condition and the second condition are satisfied. If at least one of the first condition and the second condition is not satisfied, the reference voltage value VC is not learned. The learning value by the shift direction learning value calculation unit 321E is written in the storage unit 330 by the latch processing unit 321F as the learning value VC (N) of N times of the reference voltage value.

  With reference to FIG. 5, a control structure of a program executed by HV-ECU 30 which is the control device according to the present embodiment will be described. This program is repeatedly executed at the cycle time TC set by the period timer 322 as described above.

  In step (hereinafter, step is abbreviated as S) 100, HV-ECU 30 detects shift voltage value Vsh (n) of the current cycle and select voltage value Vse (n) of the current cycle.

  In S <b> 102, HV-ECU 30 reads the previous reference voltage value VC (N−1) stored in storage unit 330.

  In S104, HV-ECU 30 calculates shift direction position SH (n) based on shift voltage value Vsh (n) and previous reference voltage value VC (N-1). As described above, the HV-ECU 30 sets VC (N−1) −α = Lo, VC (N−1) + β = Hi, and SH (n) = shift L, Lo when Vsh (n) <Lo. When <Vsh (n) <Hi, SH (n) = shift M, and when Vsh (n)> Hi, SH (n) = shift H.

  In S106, HV-ECU 30 calculates select direction position SE (n) based on select voltage value Vse (n). As described above, the HV-ECU 30 calculates SE (n) = select L when Vse (n) <M and SE (n) = select H when Vse (n)> M.

  In S108, HV-ECU 30 calculates shift position SP (n) based on shift direction position SH (n) and select direction position SE (n). As described above, when SE (n) = select L, the HV-ECU 30 sets SP (n) = N when SH (n) = shift M and SP (n) when SH (n) = shift H. When n) = D and SH (n) = shift L, SP (n) = R is calculated. When SE (n) = select H, SP (n) is calculated when SH (n) = shift M. = M, SH (n) = shift H, SP (n) = B, and SH (n) = shift L, SP (n) = EX.

  At S110, HV-ECU 30 stores select direction position SE (n) and shift position SP (n) in storage unit 330.

  In S <b> 200, HV-ECU 30 reads select direction position SE (n−1) of the previous cycle stored in storage unit 330.

  In S202, HV-ECU 30 determines whether or not select direction position SE (n) of the current cycle is different from select direction position SE (n-1) of the previous cycle. If SE (n) and SE (n-1) are different (YES in S202), the process proceeds to S204. Otherwise (NO in S202), the process proceeds to S212.

  In S <b> 204, HV-ECU 30 reads shift position SP (n−1) of the previous cycle stored in storage unit 330.

  In S206, HV-ECU 30 determines whether or not shift position SP (n-1) of the previous cycle is the M position. If it is the M position (YES in S206), the process proceeds to S208. Otherwise (NO in S206), the process proceeds to S212.

  In S208, HV-ECU 30 calculates a learned value of reference voltage value VC in the current cycle. For example, the HV-ECU 30 calculates the current reference voltage value VC (N) as {previous reference voltage value VC (N−1) + current cycle shift voltage value Vsh (n)} / 2. The learning value calculation method is not limited to this.

  In S <b> 210, HV-ECU 30 stores current reference voltage value VC (N) in storage unit 330.

  In S212, HV-ECU 30 does not learn reference voltage value VC in the current cycle.

  A learning operation of HV-ECU 30 according to the present embodiment based on the above-described structure and flowchart will be described with reference to FIG.

  As shown in FIG. 6, when the shift lever 270 is maintained at the D position, the select voltage value Vse is changed from a value smaller than the threshold value M to a larger value due to the influence of noise in the select voltage value Vse. Assume a change.

  In this case, the select direction position SE (n-1) in the cycle immediately before the occurrence of noise (previous cycle) is the select L, but the select direction position SE (n) in the cycle immediately after the occurrence of noise (current cycle) is Even though the shift lever 270 is maintained at the D position, a selection H is calculated (S106), and the condition that SE (n-1) and SE (n) are different is satisfied (S202). .

  If only this condition is used as the learning permission condition for the reference voltage value VC, the learning of the reference voltage value VC is performed at the shift voltage value Vsh (n) at the time when the shift lever 270 is positioned at the D position (when it is not positioned on the select path 266). The learning value does not become an appropriate value.

  Therefore, the HV-ECU 30 according to the present embodiment reads the shift position SP (n−1) = D position of the previous cycle (S204) in the current cycle, and shift position SP (n−1) of the previous cycle. ) Is in the M position (S206). In the case shown in FIG. 6, since shift position SP (n-1) in the previous cycle is the D position and not the M position (NO in S206), learning of reference voltage value VC in the current cycle is not performed (S212). ).

  This suppresses learning of the reference voltage value VC with the shift voltage value Vsh (n) when the shift lever 270 is not positioned on the select path 266, so that the reference voltage value VC is appropriately learned. Can do.

  As described above, according to the control device according to the present embodiment, the condition that the select position is different between the previous cycle and the current cycle, and the condition that the shift position in the previous cycle is the M position on the select path. Only when both conditions are satisfied, learning of the reference voltage value VC in the current cycle is performed. Therefore, learning is suppressed when the shift lever is not on the select path, so that the reference voltage value VC can be learned appropriately.

<Second Embodiment>
Hereinafter, a control device according to a second embodiment of the present invention will be described. In the control device according to the first embodiment described above, the first condition that the select direction position SE (n) of the current cycle is different from the select direction position SE (n−1) of the previous cycle is satisfied. When the second condition that the shift position SP (n-1) of the previous cycle is the M position is satisfied (YES in S206 of FIG. 5) (YES in S202 of FIG. 5), the reference voltage value VC learning was performed (S208, S210).

  In contrast, the control device according to the present embodiment changes the second condition in the first embodiment described above to the condition that “the shift position SP (n) of the current cycle is the M position”. It is. Other processes are the same as those in the first embodiment. Therefore, detailed description here will not be repeated for the same control block diagram and flowchart as those of the control device of the first embodiment.

  With reference to FIG. 7, a control structure of a program executed by HV-ECU 30 which is the control device according to the present embodiment will be described.

  In S300, HV-ECU 30 determines whether or not shift position SP (n) of the current cycle is the M position. If it is the M position (YES in S300), the process proceeds to S208. Otherwise (NO in S300), the process proceeds to S212.

  Thus, in the control device according to the present embodiment, both the condition that the select position is different between the previous cycle and the current cycle, and the condition that the shift position in the current cycle is the M position on the select path are both. Only when the above condition is satisfied, learning of the reference voltage value VC in the current cycle is performed. Therefore, as in the first embodiment described above, the learning is suppressed from being erroneously performed when noise occurs in the select sensor value when the shift lever is not on the select path. VC can be learned appropriately.

  In the process of S300 in FIG. 7 described above, it may be determined whether or not the state where the shift position SP after the current cycle is the M position has continued for a predetermined time. In this way, it is possible to perform learning while more appropriately eliminating the influence of noise.

<Modification of the first and second embodiments>
In the first and second embodiments described above, the change in the select direction position SE is the first condition for learning the reference voltage value VC (YES in S202 of FIG. 5). The condition is not necessarily limited to the change in the selection direction position SE as long as it is estimated that the shift lever 270 is positioned on the selection path 266 based on the selection voltage value Vse.

  For example, in S202 of FIG. 5, it is determined whether or not the select voltage value Vse (n) of the current cycle is different from the select voltage value Vse (n−1) of the previous cycle, and Vse (n) and Vse ( When n-1) is different, it may be determined that the shift lever 270 is located on the select path 266 and the first condition is satisfied.

  In the first and second embodiments described above, the learning value of the reference voltage value VC is calculated only when the learning permission condition is satisfied. For example, the temporary learning value of the reference voltage value VC is always used. The temporary learning value may be reflected as the actual learning value when the learning permission condition is satisfied.

  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 figure which shows the structure of a shift control system. It is a figure for demonstrating a shift lever mechanism. It is a functional block diagram (the 1) of ECU. It is a functional block diagram (the 2) of ECU. It is a flowchart (the 1) which shows the control structure of ECU. It is a figure for demonstrating learning operation | movement of ECU. It is a flowchart (the 2) which shows the control structure of ECU.

Explanation of symbols

  2 shift mechanism, 10 shift control system, 20 P switch, 22 shift sensor, 24 select sensor, 26 shift lever mechanism, 30 HV-ECU, 40 P-ECU, 42 actuator, 46 encoder, 48 shift switching mechanism, 260 shift gate 262, first shift path, 264 second shift path, 266 select path, 270 shift lever, 310 A / D converter, 320 arithmetic processing section, 321 shift position calculation processing section, 321A shift direction position calculation section, 321B select direction position Calculation unit, 321C latch processing unit, 321D shift direction learning determination unit, 321E shift direction learning value calculation unit, 321F latch processing unit, 321G shift lever position calculation unit, 321H latch processing unit, 322 period timer, 330 Memory part.

Claims (11)

A control device for a transmission provided in a vehicle having a movable part that is operated by a driver to move along a shift gate including a first path and a second path, each having a plurality of shift positions, The first path extends in a first direction, the second path is connected to the first path, extends in a second direction different from the first direction,
The control device includes:
A first sensor that outputs a first output value corresponding to the position of the movable part in the first direction;
A second sensor that outputs a second output value corresponding to the position of the movable part in the second direction;
A control unit connected to the first sensor and the second sensor;
The control unit is
A first calculation unit that calculates a first shift position of the movable unit in the first direction based on a reference value indicating that the movable unit is located at a reference position in the first direction and the first output value. When,
A second calculation unit that calculates a second shift position of the movable unit in the second direction based on the second output value;
A third calculator that calculates a requested shift position requested by the driver based on the first shift position and the second shift position;
Determining whether a predetermined learning condition is satisfied, and a learning unit that learns the reference value when the learning condition is satisfied,
The learning condition is estimated that the movable part is on the second path based on the second output value at a first time point and the second output value at a second time point that is later than the first time point. And the second condition that one of the required shift position at the first time point and the required shift position at the second time point is a predetermined shift position on the second path. A transmission control device that is a condition that the condition is satisfied.   The transmission control device according to claim 1, wherein the second condition is a condition that the requested shift position at the first time point is the predetermined shift position.   The transmission control device according to claim 1, wherein the second condition is a condition that the requested shift position at the second time point is the predetermined shift position.   The transmission control device according to claim 3, wherein the second condition is a condition that the requested shift position after the second time point is the predetermined shift position continuously for a predetermined time.   The first condition is a condition that the second output value at the first time point is different from the second output value at the second time point, and the second shift position at the first time point and the second time point at the second time point. The transmission control device according to any one of claims 1 to 4, wherein one of the conditions is that the second shift position is different.   The learning unit performs learning of the reference value at the second time point using the first output value at the second time point when the learning condition is satisfied, and when the learning condition is not satisfied, The transmission control device according to claim 1, wherein learning of the reference value at the second time point is not performed. The control unit performs calculations at a predetermined cycle,
The transmission control apparatus according to any one of claims 1 to 6, wherein a time difference between the first time point and the second time point is the predetermined period. The movable portion is a momentary movable portion that is held in a neutral position when not operated by a driver,
The second path has one end connected to the first path and the neutral position at the other end,
The transmission control device according to claim 1, wherein the predetermined shift position is the neutral position.   The learning unit learns a reference value at the second time point based on a history of the reference value before the second time point in addition to the first output value at the second time point. The control apparatus of the transmission in any one of 1-8. The first output value when the movable part is moving on the second path is the first output value when the movable part is located at a connection position of the first path with the second path. Has the characteristics shown,
The transmission control device according to claim 1, wherein the reference position is a connection position of the first path with the second path. Control performed by a control unit that controls a transmission provided in a vehicle having a movable portion that is operated by a driver so as to move along a shift gate including a first path and a second path each having a plurality of shift positions. The first path extends in a first direction, the second path is connected to the first path, extends in a second direction different from the first direction, and the control unit includes: A first sensor that outputs a first output value corresponding to the position of the movable part in the first direction, and a second sensor that outputs a second output value corresponding to the position of the movable part in the second direction. Connected,
The control method is:
A first calculation step of calculating a first shift position of the movable part in the first direction based on a reference value indicating that the movable part is located at a reference position in the first direction and the first output value. When,
A second calculating step of calculating a second shift position of the movable part in the second direction based on the second output value;
A third calculation step of calculating a requested shift position requested by the driver based on the first shift position and the second shift position;
Determining whether or not a predetermined learning condition is satisfied, and when the learning condition is satisfied, a learning step of learning the reference value,
The learning condition is presumed that the movable part is on the second path based on the second output value at a first time point and the second output value at a second time point later than the first time point. And the second condition that one of the required shift position at the first time point and the required shift position at the second time point is a predetermined shift position on the second path. A transmission control method, which is a condition that the condition is satisfied.

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