WO2022163146A1 - モータ制御システム、モータ制御装置、モータ制御方法、プログラム - Google Patents
モータ制御システム、モータ制御装置、モータ制御方法、プログラム Download PDFInfo
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- WO2022163146A1 WO2022163146A1 PCT/JP2021/045124 JP2021045124W WO2022163146A1 WO 2022163146 A1 WO2022163146 A1 WO 2022163146A1 JP 2021045124 W JP2021045124 W JP 2021045124W WO 2022163146 A1 WO2022163146 A1 WO 2022163146A1
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- 238000000034 method Methods 0.000 title claims description 14
- 238000001514 detection method Methods 0.000 claims abstract description 29
- 238000003384 imaging method Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 13
- 230000004048 modification Effects 0.000 description 8
- 238000012986 modification Methods 0.000 description 8
- 238000004364 calculation method Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000004590 computer program Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/08—Monitoring manufacture of assemblages
- H05K13/0882—Control systems for mounting machines or assembly lines, e.g. centralized control, remote links, programming of apparatus and processes as such
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
Definitions
- the present disclosure relates to a motor control system, a motor control device, a motor control method, and a program for controlling motors in production equipment and the like.
- a production device using a conventional motor control system includes a motor control system, a motor, and a mover.
- a motor control system includes a controller, a motor controller, and a camera.
- the camera transmits captured data to the controller.
- the production apparatus is, for example, an electronic component mounter that mounts electronic components on printed circuit boards.
- the moving part includes the mounting head. Note that the camera moves together with the moving part (mounting head).
- the controller determines the position of the mounting head based on the received data, generates a target position for moving the motor based on the determined position, and transmits the target position as an operation command (position command) to the motor control device. .
- the controller compares the previously output operation command with the position of the mounting head detected by the camera, and generates an operation command according to the difference.
- a motor control device generates a drive signal for driving a motor based on an operation command. Then, the motor moves the moving part according to the drive signal.
- Patent Document 1 is known as prior art document information related to the present disclosure.
- the controller generates motion commands for the motor based on the position detected by the camera. Therefore, for example, when the camera is displaced from the predetermined position due to an external force or the like, there is a problem that the moving part is moved to a position displaced from the normal position.
- the present disclosure solves this problem, and aims to provide a motor control system, a motor control device, a motor control method, and a program that can detect the deviation of the moving part from the target position.
- a motor control system of the present disclosure includes a controller, a motor control device, and a position detection device.
- the controller has a first signal processing circuit.
- An operation command plan is set in the first signal processing circuit for a movement plan from the initial position until the moving part reaches the target position. Further, the first signal processing circuit outputs the movement amount of the moving part at the present time as an operation command based on the operation command plan.
- the motor controller includes a second signal processing circuit.
- a second signal processing circuit generates a driving signal for a driving device that moves the moving part based on the operation command.
- the position detection device detects the position of the moving part and outputs the detected position of the moving part as the first position.
- the second signal processing circuit calculates the target position of the moving part based on the future movement distance of the moving part based on the future motion command in the motion command plan, the first position, and the target position. Generate the amount of deviation from the position. Furthermore, when the amount of deviation is equal to or greater than a predetermined threshold value, a notification signal is output. This makes it possible to achieve the intended purpose.
- the motor control device of the present disclosure based on the operation command plan for the movement plan from the initial position to the target position of the moving part, the current amount of movement of the moving part is output as an operation command from the controller.
- a second signal processing circuit for generating a driving signal for a driving device for moving the moving portion based on the received operation command;
- a second signal processing circuit detects a future moving distance of the moving part based on a future operation command in the operation command plan and a position of the moving part, and uses the detected position of the moving part as a first position.
- a deviation amount of the moving part from the target position is generated, and when the deviation amount is equal to or greater than a predetermined threshold value, a notification signal to output This makes it possible to achieve the intended purpose.
- the motor control method of the present disclosure outputs the current amount of movement of the moving part as an operation command based on the operation command plan for the movement plan for the movement of the moving part from the initial position to the target position. to generate a drive signal for a driving device for moving the moving part based on the above, detect the position of the moving part, and output the detected position of the moving part as the first position. Then, based on the future movement distance of the moving part based on the future motion command in the motion command plan, the first position, and the target position, a deviation amount of the moving part from the target position is generated, and the deviation amount is is greater than or equal to a predetermined threshold value, a notification signal is output. This makes it possible to achieve the intended purpose.
- the program of the present disclosure is a program for causing a computer to execute the motor control method described above. This makes it possible to achieve the intended purpose.
- the driving device is operated in accordance with the operation command plan based on the distance to the target based on the information detected by the position detection device and the moving distance of the moving unit based on the future operation command. It is possible to generate the deviation amount from the target position of the moving part in the case. Since a notification signal is output based on the detected deviation amount, a worker who uses the motor control system or the like or a manager or maintenance person of the system can easily confirm that the moving part has deviated from the target position. can be grasped.
- FIG. 1 is a schematic block diagram of a production device using a motor control system according to an embodiment of the present disclosure
- FIG. 4 is a conceptual diagram of processing blocks in a signal processing circuit in the motor control device
- FIG. 5 is an explanatory diagram showing processing in the signal processing circuit of the same; It is a flowchart of processing in a signal processing circuit of the same. 5 is a flowchart of another process in the signal processing circuit
- FIG. 11 is an explanatory diagram for explaining another processing method when setting a threshold value in the signal processing circuit
- FIG. 9 is an explanatory diagram showing processing in a modification of the signal processing circuit in the motor control device
- 10 is a flowchart of processing in a modified example of the signal processing circuit.
- FIG. 4 is an explanatory diagram showing processing in the controller and the control device of the motor control system according to the embodiment of the present disclosure
- FIG. 1 is a schematic block diagram of a production device using a motor control system.
- FIG. 2 is a conceptual diagram of processing blocks in a signal processing circuit in the motor control device.
- FIG. 3 is an explanatory diagram showing processing in a signal processing circuit in the motor control device.
- FIG. 11 is an explanatory diagram showing signal processing in the controller and the motor control device in the motor control device.
- the production device 1 includes a motor control system 2, a drive device 3, and a moving section 4.
- the production apparatus 1 is, for example, an electronic component mounter that mounts electronic components on a printed circuit board 5 .
- the moving part 4 includes a mounting head. The mounting head moves over the printed circuit board 5 while picking up the electronic component, and mounts the electronic component at a predetermined target position on the printed circuit board 5 .
- the driving device 3 moves the moving part 4 .
- the motor control system 2 includes a controller 21, a motor control device 22, and a position detection device 23.
- the position detection device 23 is, for example, an imaging device such as a camera.
- Controller 21 includes signal processing circuitry 211 , input device 212 and memory 213 .
- the signal processing circuit 211 is an example of a first signal processing circuit.
- the signal processing circuit 211 processes the action command plan set for the input movement plan.
- the movement plan is a plan for moving the moving part 4 on the printed circuit board 5 from the initial position until the moving part 4 reaches the target position.
- an action command plan is set for the movement plan from the initial position until the moving part 4 reaches the target position.
- the operator of the controller 21 inputs the movement plan to the controller 21 through the input device 212 .
- the controller 21 generates an action command plan according to the input movement plan, and stores the action command plan in the memory 213 inside the controller 21 .
- the motion command plan is a motion command to be output to the motor control device 22 until the moving part 4 reaches the target position from the initial position.
- the signal processing circuit 211 outputs the current movement amount of the moving part 4 as an operation command based on the operation command plan.
- the motor control device 22 includes a signal processing circuit 221.
- the signal processing circuit 221 is an example of a second signal processing circuit.
- the signal processing circuit 221 generates a driving signal for the driving device 3 that moves the moving section 4 based on the operation command. That is, the signal processing circuit 221 generates the drive signal based on the operation command.
- the drive device 3 is supplied with a drive signal and moves the moving part 4 based on this drive signal.
- the position detection device 23 moves together with the moving part 4 .
- the position detection device 23 detects the position of the moving section 4 .
- the position detection device 23 outputs the detected position of the moving part 4 as position information of the moving part 4 .
- the position detection device 23 outputs the detected position of the moving part 4 as the first position.
- the position detection device 23 does not have to move together with the moving part 4 and may be fixed at a position where the position of the moving part 4 can be detected.
- the position detection device 23 is an imaging device
- the position detection device 23 may be fixed at a position where the target position can be imaged.
- the position detecting device 23 can detect the position of the moving part 4 from the positional relationship between the moving part 4 and the target position when the moving part 4 is positioned within the range that can be imaged by the position detecting device 23 .
- the position detection device 23 detects the initial position of the moving section 4 and the current position (first position) of the moving section 4 .
- the initial position of the moving part 4 and the first position (current position) of the moving part 4 are input to the controller 21 by the input device 212 after passing through the signal processing circuit 221 of the motor control device 22 .
- the signal processing circuit 211 uses the data indicating the initial position of the moving part 4 and the current position of the moving part 4, based on the operation command plan, to the motor control device 22 as an operation command of the movement amount and the movement distance of the moving part 4 at the present time. Output.
- the signal processing circuit 221 determines the movement based on the future movement distance of the moving unit 4 based on the future operation command in the operation command plan, the position information of the moving unit 4, and the target position set in the controller 21 in advance. A deviation amount from the target position of the part 4 is generated. Specifically, for example, the signal processing circuit 221 calculates the future movement distance of the moving unit 4 based on the future operation command in the operation command plan, the first position, and the target position set in the controller 21 in advance. Based on, the deviation amount of the moving part 4 from the target position is generated. Furthermore, the signal processing circuit 221 outputs a notification signal when the generated deviation amount is equal to or greater than a predetermined threshold value.
- the signal processing circuit 221 issues an operation command to the driving device 3 based on the distance to the target position based on the position information detected by the position detection device 23 and the movement distance of the moving unit 4 based on future operation commands. It is possible to generate the deviation amount from the target position of the moving part 4 when it is operated according to the plan. Specifically, for example, the signal processing circuit 221 determines, based on the difference between the distance from the first position to the target position and the future movement distance of the moving unit 4 based on the future movement command in the movement command plan, A deviation amount from the target position of the moving part 4 when the driving device 3 is operated according to the operation command plan is generated.
- the amount of deviation of the moving part 4 from the target position when the driving device 3 is operated according to the operation command plan is given by It is the amount of deviation between the predicted arrival position and the target position of the moving unit 4 .
- the signal processing circuit 221 outputs a notification signal based on the generated deviation amount. Therefore, a subject involved in the production apparatus 1 (motor control system 2) (including, for example, a worker who uses the production apparatus 1, or an administrator and maintenance person of this production apparatus 1) is concerned that the moving unit 4 will deviate from the target position. You can easily and quickly grasp that
- Motor control system 2 includes a notification device 24 .
- the target person can easily and quickly grasp that the moving part 4 is deviated from the target position by the warning device 24 issuing a warning.
- the notification device 24 is connected to the controller 21.
- the notification device 24 is, for example, a display.
- the notification device 24 displays a warning indicating that the moving part 4 is deviated from the target position on the display based on the notification signal.
- the notification device 24 may be a warning light.
- the notification device 24 lights the warning light based on the notification signal.
- the notification device 24 is not limited to being connected to the controller 21 , and may be connected to the motor control device 22 .
- the notification device 24 may be a warning light, a display device, or the like provided in advance in the production device 1 .
- the notification device 24 may be included in the controller 21 or the motor control device 22 .
- the position detection device 23 is, for example, an imaging device 23a.
- the imaging device 23 a includes a camera 231 and an image processing device 232 .
- the camera 231 is fixed to the moving part 4 (eg, mounting head).
- the moving section 4 also includes a camera 231 .
- the camera 231 acquires an image of an object to be photographed (for example, the printed circuit board 5).
- the image processing device 232 acquires the positional information of the moving section 4 based on the captured image and outputs it to the motor control device 22 .
- the motor control device 22 may include the image processing device 232.
- the signal processing circuit 221 may include the image processing device 232 .
- the driving device 3 includes a motor 31 and an encoder 32.
- the motor 31 moves the moving part 4 by a drive signal generated based on the operation command.
- the encoder 32 detects the position of the motor 31 and outputs position data to the signal processing circuit 221 .
- the encoder 32 detects the current position of the motor 31 and outputs position data indicating the current position of the motor 31 .
- the signal processing circuit 211 generates the future movement distance of the moving unit 4 based on the position data acquired by the encoder 32 and the future operation commands in the operation command plan. Specifically, for example, the signal processing circuit 211 generates the second position of the moving unit 4 based on the position data acquired by the encoder 32 and the future movement distance of the moving unit 4 based on the future operation command. do.
- the second position is the current position of the moving part 4 based on the position data obtained by the encoder 32 . Therefore, the signal processing circuit 211 acquires the current position of the moving part 4 based on the position data of the motor 31 . In this case, the signal processing circuit 211 acquires position data of the motor 31 via the motor control device 22 .
- the configuration is not limited to the configuration in which the signal processing circuit 211 generates the future movement distance, and the configuration may be such that the signal processing circuit 221 generates the future movement distance.
- the signal processing circuit 211 or the signal processing circuit 221 adds the difference ⁇ between the position of the motor 31 and the position of the moving part 4 to the acquired position data. ) is added to determine the current position of the moving unit 4 .
- the signal processing circuit 211 is, for example, a computer, and in this case the above processing can be processed by a computer program.
- the signal processing circuit 221 includes a position control processing section 221a, a positional deviation calculation block 221b, and a positional deviation determination section 221c.
- the signal processing circuit 221 can be configured by, for example, a computer.
- the position control processing section 221a, the positional deviation calculating section 221b, and the positional deviation determining section 221c can be realized by processing by a program in the computer.
- the position control processing unit 221a acquires an operation command generated by the controller 21.
- the position control processing unit 221 a acquires the position data acquired by the motion command and the encoder 32 .
- a driving signal for driving the driving device 3 is generated based on these operation commands and position data, and is supplied to the driving device 3 .
- FIG. 4 is a flow chart showing the processing in the signal processing circuit 221.
- the signal processing circuit 221 acquires the position information of the moving part 4 from the position detection device 23 . Further, the positional deviation calculator 221b acquires the future movement distance generated by the signal processing circuit 211 or the signal processing circuit 221.
- FIG. 4 is a flow chart showing the processing in the signal processing circuit 221.
- the signal processing circuit 221 acquires the position information of the moving part 4 from the position detection device 23 . Further, the positional deviation calculator 221b acquires the future movement distance generated by the signal processing circuit 211 or the signal processing circuit 221.
- FIG. 1 is a flow chart showing the processing in the signal processing circuit 221.
- the positional deviation calculator 221b calculates the difference between the positional information of the moving part 4 detected by the position detection device 23 and the future movement distance, and generates the amount of deviation.
- the positional deviation determination unit 221c outputs a notification signal (determination signal) when the amount of deviation is equal to or greater than a predetermined threshold value.
- the threshold is stored in advance in the input device memory 222m. Therefore, the positional deviation calculation block 221b also sets a threshold value.
- the motor control device 22 includes an input device 222 from which the operator stores predetermined threshold values into the memory of the signal processing circuit 221 . Note that the threshold is set at least before calculating the deviation amount.
- the threshold is configured to be set by the subject from the outside, it is not limited to this configuration and may be set by the signal processing circuit 221 .
- the current displacement amount is calculated in the positional displacement calculator 221b, it is compared with the past displacement amount stored in the memory. Then, when the current deviation amount is larger than the deviation amount stored in the memory, the current deviation amount is stored in the memory as the maximum value of the deviation amount up to now. As a result, the memory stores the maximum deviation amount from the past to the present. Then, the positional deviation determination unit 221c sets the deviation amount stored in the memory as a threshold value.
- the threshold value is not limited to being set to the maximum value of the amount of deviation, and may be set to a value exceeding the maximum value.
- the positional deviation determination unit 221c may set a value obtained by multiplying the maximum value of the deviation amount by a specified value (a real number exceeding 1) as the threshold value. With the above configuration, it is possible to shorten the working time for determining the threshold value.
- the positional deviation calculation unit 221b stores in the memory each time the deviation amount is calculated. As a result, the amount of deviation from the past to the present is stored in the memory as history data. In other words, the signal processing circuit 221 stores history data including the amount of deviation at present and the amount of deviation in the past.
- the positional deviation determination unit 221c sets the maximum value of the change in the amount of deviation for a predetermined period of time among the history data as a threshold value. Note that the positional deviation determination unit 221c may set a value exceeding the maximum value of change in the amount of deviation as the threshold. For example, the positional deviation determination unit 221c may set the threshold to a value obtained by multiplying the maximum value of the change in the amount of deviation by a specified value (a real number equal to or greater than 1).
- the maximum value of the past deviation change is stored in the memory, and the change in the deviation amount from the past to the present time within a predetermined time is the maximum value of the past deviation amount stored in the memory. If it is greater than the value, the value of the current shift change is written to memory.
- the signal processing circuit 221 may set the threshold value to be equal to or greater than the maximum deviation amount in the history data, or may be a value obtained by multiplying the maximum deviation amount by a predetermined multiple.
- FIG. 5 is a flowchart showing another process in the signal processing circuit 221.
- the signal processing circuit 221 calculates the distance from the first position to the target position, the future movement distance, and the movement distance of the moving part 4 based on the operation command output from the controller 21, and the moving part 4 is still moving. The amount of deviation is generated by the difference between the sum of the moving distances that do not exist.
- the first position is the position of the moving part 4 detected by the position detection device 23 .
- the target position is a target position for moving the moving part 4 .
- the distance from the first position to the target position is the distance from the current position of the moving part 4 detected by the position detection device 23 to the target position.
- the future movement distance is the movement distance of the movement unit 4 based on the future movement command output from the controller 21 in the movement command plan. That is, for example, the future moving distance is the moving distance of the moving part 4 based on the operation command output from the controller 21 after the current time in the operation command plan.
- the movement distance of the movement unit 4 based on the operation command output from the controller 21 and the movement distance for which the movement unit 4 has not yet moved has already been output from the controller 21 at the current point in the operation command plan. This is the movement distance for which the moving part 4 has not yet moved, out of the movement distances based on the motion commands received.
- the sum of the future movement distance and the movement distance of the movement unit 4 based on the operation command output from the controller 21 and the movement distance not yet moved is the sum of the movement distances shown below. is. That is, the moving distance of the moving part 4 based on the operation command that has not yet been output from the controller 21 at this time in the operation command plan, and the moving part based on the operation command that has already been output from the controller 21 at this time in the operation command plan 4 is the sum of the moving distances that the moving part 4 has not moved yet.
- the positional deviation calculator 221b acquires the positional information detected by the camera (position detection device 23) and calculates the distance from the first position to the target position. Further, the positional deviation calculator 221b acquires the movement distance according to the future operation command. Further, the positional deviation calculator 221b acquires the distance moved by the operation command already output from the controller 21 and the distance moved by the moving part 4 yet to move.
- the positional deviation calculation unit 221b calculates the distance from the first position to the target position, the future movement distance, and the movement distance of the movement unit 4 based on the operation command output from the controller 21, even if the movement unit 4 has not yet moved.
- the amount of deviation between the predicted arrival position of the moving part 4 and the target position is generated from the difference from the sum of the moving distances that are not calculated.
- the positional deviation determination unit 221c determines the target positional deviation, etc., in the same manner as in the case of FIG. 4 described above.
- the amount of slippage can be calculated more accurately.
- FIG. 7 is an explanatory diagram illustrating another processing method for setting thresholds in the signal processing circuit.
- FIG. 8 is a flow chart of another processing method.
- the positional deviation determination unit 221c sets a threshold based on the position data obtained by the encoder 32 and obtained by the position control unit 221a. Specifically, for example, the signal processing circuit 221 sets the threshold based on the second position. For example, the positional deviation determination unit 221c acquires motor position information indicating the second position from the position control unit 221a or the like, and sets a threshold based on the second position.
- FIG. 6 is an explanatory diagram showing processing in a modification of the signal processing circuit.
- a member that connects the motor 31 and the moving part 4 generally undergoes elastic deformation when the moving part 4 moves. That is, the distance between the motor position and the head position fluctuates as the moving section 4 moves. Therefore, the positional deviation calculation block 221b corrects the position of the moving part 4 based on the position data based on the operation command. Specifically, for example, the signal processing circuit 221 corrects the second position based on the current operation command. With this configuration, the amount of deviation between the moving part 4 and the target position can be determined more accurately.
- FIG. 9 is a conceptual diagram of processing blocks of a modification of the signal processing circuit.
- FIG. 10 is a flowchart of processing in a modification of the signal processing circuit.
- the displacement of the distance between the motor position and the head position is determined according to the inertia value (inertial force) of the motor 31 or the moving part 4 .
- the inertia value of the motor 31 or moving part 4 is proportional to the torque value of the motor 31 .
- the position control unit 221a generates a torque command based on the operation command. Therefore, the positional deviation calculator 221b acquires the torque command generated by the position controller 221a, and corrects the position of the moving part 4 based on the position data based on the value of the torque command.
- the signal processing circuit 221 is not limited to correcting the position of the moving part 4 based on the position data using the value of the torque command.
- the signal processing circuit 211 may be configured to correct the position of the moving section 4 based on the position data.
- signal processing circuit 221 outputs a torque command to signal processing circuit 211 .
- the signal processing circuit 221 corrects the position of the moving part 4 based on the position data using the torque command.
- the present disclosure may be implemented as the motor control system of the embodiment described above. Also, the present disclosure may be implemented as a motor control device. The present disclosure may also be implemented as a motor control method. Further, the present disclosure may be implemented as a program for causing a computer to execute the motor control method, or as a computer-readable non-temporary recording medium in which such a program is recorded.
- the motor control system according to the present disclosure has the effect that a worker who uses the motor control system or an administrator or maintenance person of this system can easily grasp that the moving part is deviated from the target position. It is useful when used in an electronic component mounter or the like for mounting electronic components or the like.
Abstract
Description
以下本実施の形態におけるモータ制御システムおよびモータ制御装置について図面を用いて説明する。なお、添付図面は、理解を容易にするために構成要素を簡略に示している場合がある。
以下、モータ制御装置22の変形例について説明する。図6は、信号処理回路の変形例での処理を示す説明図である。モータ31と移動部4との間を接続する部材は、一般的に移動部4の移動の際に弾性変形を生じる。つまり、モータ位置とヘッド位置との間の距離が移動部4の移動に伴って変動する。そこで、位置ずれ算出ブロック221bでは、動作指令に基づいて、位置データに基づく移動部4の位置を補正する。具体的には、例えば、信号処理回路221は、現時点での動作指令に基づいて、第2の位置を補正する。この構成により、移動部4と目標位置との間のずれ量をより正確に判定できる。
2 モータ制御システム
3 駆動装置
4 移動部
5 プリント基板
21 コントローラ
22 モータ制御装置
23 位置検出装置
23a 撮像装置
24 報知装置
31 モータ
32 エンコーダ
211 信号処理回路
212 入力装置
213 メモリ
221 信号処理回路
222 入力装置
222m 入力装置メモリ
231 カメラ
232 画像処理装置
Claims (14)
- 移動部と、駆動装置と、モータと、を備えた装置を制御するモータ制御システムであって、
前記モータ制御システムは、コントローラと、モータ制御装置と、位置検出装置と、を備え、
前記コントローラは、第1の信号処理回路を有し、
前記モータ制御装置は、第2の信号処理回路を含み、
前記コントローラは、前記移動部が初期位置から目標位置に到達するまでの間の移動計画が入力されて動作指令計画を設定し、前記動作指令計画を前記第1の信号処理回路に入力し、かつ前記動作指令計画に基づいて現時点における前記移動部の移動量を前記第1の信号処理回路に動作指令として出力させ、
前記モータ制御装置は、前記動作指令を前記第2の信号処理回路に入力し、前記第2の信号処理回路に、前記動作指令に基づいて前記移動部を移動させる前記駆動装置の駆動信号を生成させ、
前記位置検出装置は、前記移動部の位置を検出し、検出された前記移動部の位置を第1の位置として出力し、
前記第2の信号処理回路は、
前記動作指令計画のうちの今後の前記動作指令に基づく前記移動部の今後の移動距離と、前記第1の位置と、前記目標位置に基づいて、前記移動部の前記目標位置からのずれ量を生成し、
かつ前記ずれ量があらかじめ定められた閾値以上である場合に、報知信号を出力する、
モータ制御システム。 - 前記第2の信号処理回路は、
前記第1の位置から前記目標位置までの距離と、前記今後の移動距離との差によって前記ずれ量を生成する、
請求項1に記載のモータ制御システム。 - 前記第2の信号処理回路は、
前記第1の位置から前記目標位置までの距離と、前記今後の移動距離および前記コントローラから出力された前記動作指令に基づく前記移動部の移動距離であって前記移動部がまだ移動していない移動距離の和との差によって前記ずれ量を生成する、
請求項1に記載のモータ制御システム。 - 前記駆動装置は、
前記動作指令に基づいて前記移動部を移動するモータと、
前記現時点での前記モータの位置を検出して、位置データを出力するエンコーダを含み、
前記第1の信号処理回路または前記第2の信号処理回路は、
前記位置データに基づく前記移動部の第2の位置と、前記今後の前記動作指令に基づいて前記移動距離を生成する、
請求項1に記載のモータ制御システム。 - 前記第1の信号処理回路または前記第2の信号処理回路は、
前記現時点での前記動作指令に基づいて、前記第2の位置を補正する、
請求項4に記載のモータ制御システム。 - 前記第2の信号処理回路は、
前記ずれ量と過去のずれ量を含む履歴データを記憶し、
前記閾値は、前記履歴データのうちの最大のずれ量以上とした、
請求項1に記載のモータ制御システム。 - 前記閾値は、前記最大のずれ量に既定の倍数を乗じた値とした、
請求項6に記載のモータ制御システム。 - 前記第2の信号処理回路は、
前記ずれ量と過去のずれ量を含む履歴データを記憶し、
前記履歴データのうちで、既定の時間の間でのずれ量の変化の最大値以上の値を前記閾値として設定する、
請求項1に記載のモータ制御システム。 - 前記第2の信号処理回路は、
前記第2の位置に基づいて前記閾値を設定する、
請求項4または5に記載のモータ制御システム。 - 前記位置検出装置は、撮像装置である、
請求項1に記載のモータ制御システム。 - 前記位置検出装置は、前記移動部とともに移動する、
請求項1から10のいずれか1項に記載のモータ制御システム。 - コントローラより指令を受け取って、移動部と、駆動装置と、モータと、を備えた装置を制御し、
前記コントローラは、前記移動部が初期位置から目標位置に到達するまでの間の移動計画に対して設定された動作指令計画に基づいて、現時点における前記移動部の移動量を動作指令として出力する、モータ制御装置であって、
前記モータ制御装置は、前記コントローラから出力された前記動作指令に基づいて前記移動部を移動させる前記駆動装置の駆動信号を生成する信号処理回路を備え、
前記信号処理回路は、
前記動作指令計画のうちの今後の前記動作指令に基づく前記移動部の今後の移動距離と、前記移動部の位置を検出しかつ検知された前記移動部の位置を第1の位置として出力する位置検出装置から出力された前記第1の位置と、前記目標位置に基づいて、前記移動部の前記目標位置からのずれ量を生成し、
かつ前記ずれ量があらかじめ定められた閾値以上の場合に、報知信号を出力する、
モータ制御装置。 - 移動部が初期位置から目標位置に到達するまでの間の移動計画に対し設定された動作指令計画に基づいて現時点における前記移動部の移動量を動作指令として出力し、
前記動作指令に基づいて前記移動部を移動させる駆動装置の駆動信号を生成し、
前記移動部の位置を検出し、検知された前記移動部の位置を第1の位置として出力し、
前記動作指令計画のうちの今後の前記動作指令に基づく前記移動部の今後の移動距離と、前記第1の位置と、前記目標位置に基づいて、前記移動部の前記目標位置からのずれ量を生成し、
前記ずれ量があらかじめ定められた閾値以上の場合に、報知信号を出力する、
モータ制御方法。 - 請求項13に記載のモータ制御方法をコンピュータに実行させるためのプログラム。
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