JP4060039B2 - Stepping motor control device and game machine to which this stepping motor control device is applied - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a stepping motor control device and a stepping motor control device.BiThe present invention relates to a gaming machine equipped with a ram type symbol display.
[0002]
[Prior art]
Conventionally, a jackpot lottery is performed for a game ball entering the starting port, and if the result of the jackpot lottery is a jackpot, it is advantageous for the player (a large number of prize balls can be obtained) A pachinko machine that can perform is known. In this type of pachinko machine, a symbol display capable of displaying a plurality of types of symbols is provided, and when a jackpot lottery is performed, a symbol representing the result of the jackpot lottery is displayed on the symbol display. Yes.
[0003]
One of the typical symbol display devices includes a drum in which a plurality of types of symbols are drawn on the peripheral surface. In this drum-type symbol display, in response to the game balls entering the start opening, the three drums start to rotate all at once, and then the rotational speed of each drum is gradually increased (slow). Up period). When the rotation speed of each drum reaches a predetermined maximum rotation speed, the rotation speed of each drum is held at the maximum rotation speed. Then, when the rotation of each drum continues at the maximum rotation speed for a predetermined time, the rotation speed is gradually decreased (slow down period) in the order of, for example, the left drum, the right drum, and the middle drum. The drum rotation is stopped. The combination of symbols arranged on a predetermined line at the time when the rotation of all the drums is stopped makes it possible to determine whether the result of the big win lottery is a big win or not.
[0004]
As a drum rotation drive source, the rotation angle can be precisely controlled to accurately display the result of the jackpot lottery (in order to accurately stop the symbol corresponding to the result of the jackpot lottery on the predetermined line). Stepping motor is used.
The stepping motor is driven and controlled by a pulse drive system or a microstep drive system by a CPU provided on a control board for controlling the operation of the symbol display. In the pulse driving method, a pulse signal (driving pulse signal) is input from the CPU to the stepping motor, and in response to the input of this pulse signal, the stepping motor excitation phase is turned on / off, so that the stepping motor rotor is stepped. The basic step angle mechanically determined by the motor configuration is rotated as one step. On the other hand, in the micro step drive system, a driver circuit that generates an excitation current to be applied to each excitation phase of the stepping motor is provided, and in synchronization with the output of the pulse signal from the CPU, the driver circuit changes the two excitation phases adjacent to each other. By changing the ratio of the applied exciting current, the rotor of the stepping motor rotates with a predetermined step angle as one step. In this microstep drive method, the excitation current is increased or decreased in steps, so that the step angle can be made smaller than in the pulse drive method in which the excitation current is controlled in a binary manner.
[0005]
The pulse signal output from the CPU is generated by a pulse signal generation process (interrupt process) capable of selecting whether or not to execute every predetermined control period (interrupt period). Further, as described above, the stepping motor rotates one step with respect to the output of the one pulse signal from the CPU, regardless of whether the pulse driving method or the microstep driving method is used. Therefore, the rotation speed (step / msec) of the stepping motor is the maximum rotation speed when the pulse signal is output by performing an interrupt process in the control cycle, and the number of cycles of the control cycle in which the pulse signal is output ( It is determined by how many control cycles the pulse signal generation process is performed).
[0006]
For example, when the control cycle is 1.0 msec, the maximum rotation speed of the stepping motor is 1.0 step / msec. By outputting a pulse signal every two control cycles, the rotation speed of the stepping motor can be controlled to 0.5 step / msec. Also, by outputting a pulse signal every three control cycles, the rotation speed of the stepping motor can be controlled to 0.33 step / msec, and a pulse signal is output every four control cycles. Thus, the rotation speed of the stepping motor can be controlled to 0.25 step / msec. That is, by outputting a pulse signal every N cycles (N: natural number) of the control cycle, the rotation speed of the stepping motor can be controlled to 1 / Nstep / msec.
[0007]
Therefore, in the conventional pachinko machine, the value of N is decreased or increased by 1 every predetermined period, so that the slow-up control for gradually increasing the drum rotation speed and the drum rotation speed are gradually decreased. Slow down control is performed. For example, in the slow-up control, as shown in FIG. 6, first, by outputting a pulse signal every four control periods, the stepping motor is rotated at a rotational speed of 0.25 step / msec. When the stepping motor rotates by 10 steps at a rotation speed of 0.25 step / msec, the output period of the pulse signal (execution period of the pulse signal generation process) is then changed to 3 periods of the control period, The rotation speed of the stepping motor is increased to 0.33 step / msec. Further, when the stepping motor rotates by 10 steps at the rotation speed of 0.33 step / msec, the output period of the pulse signal is changed to two of the control period, and the rotation speed of the stepping motor is 0.5 step / msec. To be raised. Then, when the stepping motor rotates by 10 steps at a rotation speed of 0.25 step / msec, the slow-up control is finished, and thereafter, a pulse signal is output at the above-mentioned control cycle, and the stepping motor has a maximum rotation speed of 1. It is rotated at 0 step / msec.
[0008]
[Problems to be solved by the invention]
However, in the conventional slow-up control and slow-down control, in particular, a state in which a pulse signal is output every one cycle in the same cycle as the control cycle from a state in which a pulse signal is output every two control cycles. There is a possibility that the idling state of the stepping motor may occur due to sudden load fluctuation when shifting to, and two cycles of the control cycle from the state where the pulse signal is output every cycle in the same cycle as the control cycle. When shifting to a state in which a pulse signal is output every time, the rotation speed of the stepping motor changes greatly, and the rotation of the drum (stepping motor) becomes awkward.
[0009]
  Accordingly, an object of the present invention is to solve the above-mentioned technical problem and to achieve a stepping motor control device capable of achieving smooth acceleration or deceleration of the stepping motor andthisTo provide a gaming machine provided with a stepping motor control device.
[0010]
[Means for Solving the Problems and Effects of the Invention]
  In order to achieve the above object, the invention according to claim 1 provides:A stepping motor control device for controlling a stepping motor provided in a gaming machine for displaying symbols of the gaming machine,Pulse signal output means (21) for outputting a pulse signal, and a predetermined control cycle from the pulse signal output means1Stepping motors (ML, MC, MR) can be output by repeatedly outputting pulse signals for each cycle.BestFirst step speed control means (21, Tu9 to; 0 to Td1) for rotating at the rotation speed and the pulse signal output means for repeatedly outputting a pulse signal every two cycles of the control period, the stepping motor isBestRotational speed1/2 that is 1/2 ofThe second rotation speed control means (21, Tu7 to Tu8; Td2 to Td3) for rotating at the rotation speed and the rotation speed of the stepping motor are set as above.BestRotational speed and above1/2In the process of switching to rotational speed,1The state in which a pulse signal is output for each cycle and the above control cycle2The pulse signal output means is controlled so that the state in which the pulse signal is output for each cycle is mixed, and the stepping motor isBestRotational speed and above1/2Between rotation speedTimesThird rotation speed control means (21, Tu8 ~) for rotating at the rotation speedTu9; Td1 to Td2, Td3 to Td4)Thus, the third rotational speed control means is configured to output the pulse signal in either one of a first period corresponding to one period of the control period or a second period corresponding to two periods of the control period. After a predetermined first number of pulse signals are output from the output means, a predetermined second number of pulse signals are output from the pulse signal output means in the other one of the first period or the second period. The stepping motor is rotated by repeating this cycle multiple times with the pulse output mode as one cycle.This is a stepping motor control device.
[0011]
  In addition, the alphanumeric characters in parentheses represent corresponding components in the embodiments described later. The same applies hereinafter.
  According to the present invention, in the process of switching the rotation speed of the stepping motor between the first rotation speed and the second rotation speed, the stepping motor apparently is between the first rotation speed and the second rotation speed.TimesIt is rotated at the rotation speed. Thereby, the rotation speed of the stepping motor can be smoothly changed between the first rotation speed and the second rotation speed.
[0013]
  Claims2As described above, the stepping motor control device sets the rotation speed of the stepping motor above.BestRotational speed and above1/2In the process of switching to the rotation speed, the ratio between the first number and the second number is changed every predetermined period, thereby realizing the third rotation speed control means.TimesIt is preferable to further include speed changing means for changing the rolling speed for each predetermined period.
[0014]
  This claim2According to the invention, in the process of switching the rotation speed of the stepping motor between the first rotation speed and the second rotation speed, the rotation speed of the stepping motorDegreeSince it changes minutely step by step for each predetermined period, smoother acceleration or deceleration of the stepping motor can be achieved.
  The speed changing means may change the ratio of the second number to the first number for each predetermined period when the rotational speed of the stepping motor is lowered from the first rotational speed to the second rotational speed. When the rotation speed of the stepping motor is increased from the second rotation speed to the first rotation speed, the ratio of the first number to the second number is increased every predetermined period. It is preferable that
[0015]
  Claim3In the described invention, a jackpot lottery execution means (31) for executing a jackpot lottery execution in response to a predetermined condition being satisfied, and a symbol for displaying a result of the jackpot lottery by the jackpot lottery execution means A drum (DL, DC, DR) depicted in FIG. 1, a stepping motor (ML, MC, MR) for rotationally driving the drum, and a motor control means (2) for controlling the rotation of the stepping motor And the motor control means includes:Or 2A gaming machine to which the stepping motor control device described in 1 is applied.
[0016]
  For example, when the gaming machine is a pachinko machine, the predetermined condition may be a condition that a gaming ball has entered a start port arranged on the gaming board. In the case of a pachislot machine, it may be a condition that the start lever is operated after the medal is inserted (stored medal BET). According to the present invention, the motor control means is claimed in claim 1.Or 2Therefore, smooth acceleration and deceleration of the drum can be achieved.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a block diagram showing an electrical configuration of a pachinko machine according to an embodiment of the present invention. This pachinko machine performs a jackpot lottery to determine whether or not to enter a jackpot game advantageous to the player with respect to the entrance of the pachinko ball to the starting port (not shown) arranged on the game board, This jackpot lottery result is displayed on the drum-type symbol display 1.
[0021]
The drum-type symbol display 1 has, for example, a left drum DL, a middle drum DC, and a right drum DR arranged in a horizontal row. On the peripheral surfaces of these drums DL, DC, DR, a plurality of types of patterns (for example, numbers, letters, patterns, etc.) are drawn, and on the rotation axes of the drums DL, DC, DR, respectively. Stepping motors ML, MC, MR are connected. When the stepping motors ML, MC, MR are driven to rotate, the drums DL, DC, DR rotate in synchronization with the stepping motors ML, MC, MR, and a plurality of types of symbols drawn on the peripheral surfaces of the drums DL, DC, DR are sequentially predetermined. Opposite the stop line. When the stepping motors ML, MC, and MR are stopped, a predetermined number (one or a plurality) of symbols of the drums DL, DC, and DR are aligned on the stop line. The result of the jackpot lottery is represented by a combination of symbols arranged on the stop line.
[0022]
In addition to the drums DL, DC, DR and the stepping motors ML, MC, MR, the drum-type symbol display 1 includes, for example, lottery results other than the big hit lottery (for example, a start gate disposed on the game board). A display (for example, a 7-segment display or a dot matrix display) for displaying a result of an auxiliary lottery performed in response to the passing of the game ball may be provided.
The operation of the drum-type symbol display 1 is controlled by the CPU 21 provided on the symbol display control board 2. The symbol display control board 2 further includes a RAM 22 and a ROM 23, and the RAM 22 and the ROM 23 are connected to the CPU 21 by a data bus 24. An I / O (Input / Output) port 25 is connected to the data bus 24.
[0023]
In this embodiment, a so-called micro-step drive system is employed, and a driver circuit 26 that generates an excitation signal to be applied to each excitation phase of the stepping motors ML, MC, MR is connected to the I / O port 25. Yes. In the micro-step driving method, a pulse signal is output from the CPU 21 at a cycle corresponding to the target rotational speed of the stepping motors ML, MC, MR, and the stepping motors ML, MC, By changing the excitation current applied to the MR, the rotors of the stepping motors ML, MC, and MR rotate with a predetermined step angle (for example, 0.3 degrees) as one step. That is, the stepping motors ML, MC, MR rotate by one step each time one pulse signal is output from the CPU 21.
[0024]
A symbol control signal (command) is inputted to the I / O port 25 of the symbol display control board 2 from the main control board 3 for comprehensively controlling the operation of the entire pachinko machine. The main control board 3 includes a CPU 31, a RAM 32, and a ROM 33, and these CPU 31, RAM 32, and ROM 33 are connected to each other via a data bus 34. An I / O port 35 is connected to the data bus 34, and a detection signal from a ball entry sensor (not shown) for detecting the entry of a game ball into the start port is connected to the I / O port 35. Etc. are entered. When a detection signal is input from the above-described ball entry sensor, the CPU 31 performs a big hit lottery in response to this signal input, and generates a symbol control signal corresponding to the result of the big hit lottery. The symbol control signal generated in this way is output from the I / O port 35 toward the symbol display control board 2.
[0025]
When a symbol control signal is input from the main control substrate 3, the CPU 21 of the symbol display control board 2 is configured to stepping motors ML and MC for aligning the result of the big win lottery on the stop line based on the symbol control signal. , MR drive control (drum DL, DC, DR rotation control) is performed. In this control, for example, in response to the input of the symbol control signal, the stepping motors ML, MC, MR start to rotate all at once, and then the rotational speeds of the stepping motors ML, MC, MR are gradually increased. (Slow-up period). When the rotation speed of each stepping motor ML, MC, MR reaches the maximum rotation speed (for example, 1.0 step / msec), the rotation speed of each stepping motor ML, MC, MR is held at the maximum rotation speed. Then, when the rotation of each stepping motor ML, MC, MR at the maximum rotation speed is continued for a predetermined time, then, for example, the stepping motor ML of the left drum DL, the stepping motor MR of the right drum DR, and the middle drum DC stepping motor MC The rotational speed is gradually decreased in the order (slow down period), and finally the rotation of all the stepping motors ML, MC, MR is stopped. When the rotation of all stepping motors ML, MC, MR stops, the combination of symbols representing the result of the big win lottery is aligned on the stop line, so that whether the result of the big win lottery is a big hit or not? Is notified to the player.
[0026]
In addition to the configuration shown in FIG. 1 (configuration related to control of the symbol display 1), the pachinko machine includes, for example, a sound effect generator for generating sound effects, and this sound effect generator. A voice control board and the like for controlling the operation is provided.
FIG. 2 is a time chart for explaining the control (slow-up control) of the stepping motors ML, MC, MR in the slow-up period, and shows the time change of the rotational speed of the stepping motors ML, MC, MR. .
[0027]
The pulse signal output by the CPU 21 of the symbol display control board 2 is generated by a pulse signal generation process (interrupt process) capable of selecting whether or not to execute every predetermined control cycle. Since the stepping motors ML, MC, MR rotate by one step every time one pulse signal is output from the CPU 21, the rotation speed (step / msec) of the stepping motors ML, MC, MR is pulsed at the above control cycle. When the signal generation process is performed and a pulse signal is output in the control cycle, the maximum rotation speed is obtained. In this embodiment, the control cycle is set to 1.0 msec, and during the slow-up period, the rotation speed of the stepping motors ML, MC, MR is gradually increased from zero to the maximum rotation speed of 1.0 step / msec. It is done.
[0028]
When a symbol control signal is input from the main control board 3 (time Tu1), a pulse signal generation process is then performed every eight control cycles, and a pulse signal is generated from the CPU 21 every eight control cycles. By outputting, the stepping motors ML, MC, MR are rotated at a rotational speed of 0.125 step / msec. When the stepping motors ML, MC, MR are rotated by 10 steps at a rotation speed of 0.125 step / msec, the pulse signal output period (execution period of the pulse signal generation process) is equal to 7 periods of the control period. And the rotation speed of the stepping motors ML, MC, MR is increased to 0.143 step / msec by outputting a pulse signal every seven control periods (time Tu2). Further, when the stepping motors ML, MC, MR rotate by 10 steps at the rotational speed of 0.143 step / msec, the output period of the pulse signal is changed to 6 periods of the control period, and the stepping motors ML, MC, The rotational speed of MR is increased to 0.167 step / msec (time Tu3).
[0029]
When the stepping motors ML, MC, MR are rotated by 10 steps at a rotation speed of 0.167 step / msec, the output cycle of the pulse signal is changed to 5 cycles of the control cycle, and the rotation of the stepping motors ML, MC, MR The speed is increased to 0.2 step / msec (time Tu4). Further, when the stepping motors ML, MC, MR are rotated by 10 steps at the rotation speed of 0.2 step / msec, the output period of the pulse signal is changed to 4 periods of the control period, and the stepping motors ML, MC, The rotational speed of MR is increased to 0.25 step / msec (time Tu5). Further, when the stepping motors ML, MC, MR are rotated by 10 steps at a rotation speed of 0.25 step / msec, the output cycle of the pulse signal is changed to three of the control cycles, and the stepping motors ML, MC, MR are changed. Is increased to 0.333 step / msec (time Tu6). Thereafter, when the stepping motors ML, MC, MR are rotated by 10 steps at a rotational speed of 0.333 step / msec, the output cycle of the pulse signal is changed to two of the control cycles, and the stepping motors ML, MC, The rotational speed of MR is increased to 0.5 step / msec (time Tu7).
[0030]
Thereafter, when the control in the above-described mode (a mode in which the output cycle of the pulse signal is changed by one cycle of the control cycle every time the stepping motors ML, MC, MR rotate by 10 steps) is continued, After the stepping motors ML, MC, MR are rotated by 10 steps at a rotation speed of 0.5 step / msec, the stepping motors ML, MC, MR are set to the maximum rotation speed by outputting a pulse signal in the above control cycle. It is rotated at 1.0 step / msec. However, in this case, the rotation speed of the stepping motors ML, MC, MR is changed from 0.5 step / msec to 1.0 step / msec before and after the output period of the pulse signal is changed from two to one period of the control period. Therefore, the rotation of the stepping motors ML, MC, MR becomes awkward.
[0031]
Therefore, in this embodiment, after the stepping motors ML, MC, MR are rotated by 10 steps at a rotational speed of 0.5 step / msec in the period of time Tu7 to Tu8, the rotational speeds of the stepping motors ML, MC, MR are changed. Control for gradually increasing from 0.5 step / msec to 1.0 step / msec is performed (period of time Tu8 to Tu9). After this control, a pulse signal is repeatedly output in the control cycle, whereby a stepping motor ML, MC and MR are rotated at a maximum rotation speed of 1.0 step / msec. Thereby, smooth acceleration of the stepping motors ML, MC, MR can be achieved throughout the entire slow-up period.
[0032]
FIG. 3 is a time chart for explaining the control for gradually increasing the rotational speed of the stepping motors ML, MC, MR from 0.5 step / msec to 1.0 step / msec. In this gradual increase control, first, a total of five pulse signals are output by outputting a pulse signal every two control cycles within a period corresponding to 10 control cycles, and then continued. This cycle is repeated five times, with a pulse output mode in which one pulse signal is output within one control period as one cycle. The period during which these five cycles are performed (the period from time Tu8 to Tu81) corresponds to the length of 55 periods of the control period, and a total of 30 pulse signals are output from the CPU 21 throughout the period from time Tu8 to Tu81. Is done. Therefore, the average rotational speed of the stepping motors ML, MC, MR in the period of time Tu8 to Tu81 is 0.545 (= 30/55) step / msec, and the stepping motors ML, MC, MR are apparently The rotation speed is 0.545 step / msec.
[0033]
Next, within a period corresponding to eight control cycles, a total of four pulse signals are output by outputting a pulse signal every two control cycles, and then the control cycle following the control cycle is output. This cycle is repeated five times with a pulse output mode in which one pulse signal is output within a period of one cycle as one cycle. The period in which these five cycles are performed (the period from time Tu81 to Tu82) corresponds to the length of 45 cycles of the control period, and a total of 25 pulse signals are output from the CPU 21 throughout the period from time Tu81 to Tu82. Is done. Accordingly, the average rotational speed of the stepping motors ML, MC, MR during the period of time Tu81 to Tu82 is 0.556 (= 25/45) step / msec, and the stepping motors ML, MC, MR are apparently The rotation speed is 0.556 step / msec.
[0034]
Thereafter, within a period corresponding to six control cycles, a total of three pulse signals are output by outputting a pulse signal every two control cycles, and then the control cycle following the control cycle is output. This cycle is repeated five times with a pulse output mode in which one pulse signal is output within a period of one cycle as one cycle. The period in which these five cycles are performed (the period from time Tu82 to Tu83) corresponds to the length of 35 cycles of the control period, and a total of 20 pulse signals are output from the CPU 21 throughout the period from time Tu82 to Tu83. Is done. Therefore, the average rotational speed of the stepping motors ML, MC, MR in the period of time Tu82 to Tu83 is 0.571 (= 20/35) step / msec, and the stepping motors ML, MC, MR are apparently The rotation speed is 0.571 step / msec.
[0035]
Subsequently, within a period corresponding to four control cycles, a total of two pulse signals are output by outputting a pulse signal every two control cycles, and then the control cycle following the control cycle is output. This cycle is repeated five times with a pulse output mode in which one pulse signal is output within a period of one cycle as one cycle. The period in which these five cycles are performed (the period from time Tu83 to Tu84) corresponds to the length of 25 cycles of the control period, and a total of 15 pulse signals are output from the CPU 21 throughout the period from time Tu83 to Tu84. Is done. Therefore, the average of the rotation speeds of the stepping motors ML, MC, MR during the period from the time Tu83 to Tu84 is 0.6 (= 15/25) step / msec, and the stepping motors ML, MC, MR are apparently The rotation speed is 0.6 step / msec.
[0036]
Further, a pulse output in which one pulse signal is output within a period corresponding to two control cycles, and then one pulse signal is output within one control cycle following the control cycle. This cycle is repeated five times with the embodiment as one cycle. The period in which these five cycles are performed (the period from time Tu84 to Tu85) corresponds to the length of 15 periods of the control period, and a total of 10 pulse signals are output from the CPU 21 throughout the period from time Tu84 to Tu85. Is done. Therefore, the average rotational speed of the stepping motors ML, MC, MR in the period of time Tu84 to Tu85 is 0.667 (= 10/15) step / msec, and the stepping motors ML, MC, MR are apparently The rotation speed is 0.667 step / msec.
[0037]
Thereafter, after one pulse signal is output within a period corresponding to two control cycles, a pulse signal is output for each control cycle within a period corresponding to two control cycles. This cycle is repeated five times with a pulse output mode in which a total of two pulse signals are output as a cycle. The period in which these five cycles are performed (the period from time Tu85 to Tu86) corresponds to the length of 20 control periods, and a total of 15 pulse signals are output from the CPU 21 throughout the period from time Tu85 to Tu86. Is done. Therefore, the average of the rotation speeds of the stepping motors ML, MC, MR during the period of time Tu85 to Tu86 is 0.75 (= 15/20) step / msec, and the stepping motors ML, MC, MR are apparently It is rotated at a rotation speed of 0.75 step / msec.
[0038]
Further, after one pulse signal is output within a period corresponding to two periods of the control period, a pulse is output for each control period within a period corresponding to three periods of the subsequent control period. This cycle is repeated five times with the pulse output mode of outputting a total of three pulse signals by outputting signals as one cycle. The period in which these five cycles are performed (the period from time Tu86 to Tu87) corresponds to the length of 25 cycles of the control period, and a total of 20 pulse signals are output from the CPU 21 throughout the period from time Tu86 to Tu87. Is done. Therefore, the average of the rotation speeds of the stepping motors ML, MC, MR during the period from the time Tu86 to Tu87 is 0.8 (= 20/25) step / msec, and the stepping motors ML, MC, MR are apparently The rotation speed is 0.8 step / msec.
[0039]
Thereafter, after one pulse signal is output within a period corresponding to two control cycles, a pulse signal is output for each control cycle within a period corresponding to four control cycles that follow. This cycle is repeated five times, with a pulse output mode in which a total of four pulse signals are output as a cycle. The period in which these five cycles are performed (the period from time Tu87 to Tu88) corresponds to the length of 30 control cycles, and a total of 25 pulse signals are output from the CPU 21 throughout the period from time Tu87 to Tu88. Is done. Therefore, the average of the rotational speeds of the stepping motors ML, MC, MR during the period of time Tu87 to Tu88 is 0.833 (= 25/30) step / msec, and the stepping motors ML, MC, MR are apparently The rotation speed is 0.833 step / msec.
[0040]
Thereafter, after one pulse signal is output within a period corresponding to two cycles of the control cycle, a pulse is output for each control cycle within a period corresponding to five cycles of the control cycle that follows. This cycle is repeated five times with a pulse output mode in which a total of five pulse signals are output by outputting a signal as one cycle. The period in which these five cycles are performed (the period from time Tu88 to Tu9) corresponds to the length of 35 control periods, and a total of 30 pulse signals are output from the CPU 21 throughout the period from time Tu88 to Tu9. Is done. Therefore, the average rotation speed of the stepping motors ML, MC, MR during the period of time Tu88 to Tu9 is 0.857 (= 30/35) step / msec, and the stepping motors ML, MC, MR are apparently The rotation speed is 0.857 step / msec.
[0041]
When the apparent rotational speed of the stepping motors ML, MC, MR is increased to 0.857 step / msec in this way, this gradual increase control is terminated, and thereafter, pulse signal generation processing is performed for each control period. By outputting the pulse signal in the control cycle, the stepping motors ML, MC, MR are continuously rotated at the maximum rotation speed of 1.0 step / msec.
FIG. 4 is a time chart for explaining the control (slow-down control) of the stepping motors ML, MC, MR during the slow-down period, and shows the time change of the rotational speed of the stepping motors ML, MC, MR. . In response to the start of the slow-down control, first, control for gradually decreasing the rotational speed of the stepping motors ML, MC, MR from the maximum rotational speed to 0.5 step / msec is started (time Td1). After this gradual reduction control, a pulse signal generation process is performed every two control cycles, and a pulse signal is output from the CPU 21 every two control cycles, whereby the stepping motors ML, MC, MR is rotated at a rotational speed of 0.5 step / msec (period Td2 to Td3).
[0042]
When the stepping motors ML, MC, MR rotate 60 steps at a rotation speed of 0.5 step / msec, the rotation speeds of the stepping motors ML, MC, MR are then gradually reduced from 0.5 step / msec to 0.333 step / msec. Control is performed (period Td3 to Td4). After that, by outputting 10 pulse signals with the output period of the pulse signal as three control periods, the stepping motors ML, MC, MR are rotated by 10 steps at a rotation speed of 0.333 step / msec. (Period of time Td4 to Td5).
[0043]
When the stepping motors ML, MC, MR are rotated by 10 steps at a rotation speed of 0.333 step / msec, the output period of the pulse signal is then changed to 4 periods of the control period, and the stepping motors ML, MC, The rotational speed of MR is lowered to 0.25 step / msec (time Td5). Further, when the stepping motors ML, MC, MR are rotated by 10 steps at the rotation speed of 0.25 step / msec, the output period of the pulse signal is changed to 5 periods of the control period, and the stepping motors ML, MC, The rotational speed of MR is lowered to 0.2 step / msec (time Td6).
[0044]
When the stepping motors ML, MC, MR are rotated by 10 steps at a rotation speed of 0.2 step / msec, the output cycle of the pulse signal is changed to 6 cycles of the control cycle, and the rotation of the stepping motors ML, MC, MR The speed is reduced to 0.167 step / msec (time Td7). Further, when the stepping motors ML, MC, MR are rotated by 10 steps at the rotation speed of 0.167 step / msec, the output period of the pulse signal is changed to 7 times of the control period, and the stepping motors ML, MC, The rotational speed of MR is reduced to 0.143 step / msec (time Td8). Further, when the stepping motors ML, MC, MR are rotated by 10 steps at a rotational speed of 0.143 step / msec, the output cycle of the pulse signal is changed to 8 times of the control cycle, and the stepping motors ML, MC, MR are changed. Is reduced to 0.125 step / msec (time Td9). Thereafter, when the stepping motors ML, MC, MR rotate by 10 steps at a rotation speed of 0.125 step / msec, the execution of the pulse signal generation process is stopped (output of the pulse signal is stopped), and the stepping motors ML, MC, MR is stopped (time Td10).
[0045]
FIG. 5 is a time chart for explaining control for gradually decreasing the rotational speed of the stepping motors ML, MC, MR from 1.0 step / msec to 0.5 step / msec. FIG. 5 shows an example of the gradual reduction control performed during the period from the time Td1 to Td2.
In this gradual reduction control, first, a total of five pulse signals are output by outputting a pulse signal for each control cycle within a period corresponding to five control cycles, and then the control cycle following this. This cycle is repeated 16 times, with a pulse output mode in which one pulse signal is output within a period of two cycles as one cycle. The period in which the 16 cycles are performed (the period from time Td1 to Td11) corresponds to the length of 112 cycles of the control period, and a total of 96 pulse signals are output from the CPU 21 throughout the period from time Td1 to Td11. Is done. Therefore, the average of the rotation speeds of the stepping motors ML, MC, MR during the period of time Td1 to Td11 is 0.857 (= 96/112) step / msec, and the stepping motors ML, MC, MR are apparently The rotation speed is 0.857 step / msec.
[0046]
Next, within a period corresponding to four control cycles, a total of three pulse signals are output by outputting a pulse signal for each control cycle, and then two control cycles following the control cycle are output. This cycle is repeated 16 times with a pulse output mode in which one pulse signal is output within the period of 1 as one cycle. The period in which the 16 cycles are performed (the period from time Td11 to Td12) corresponds to the length of 96 control periods, and a total of 80 pulse signals are output from the CPU 21 throughout the period from time Td11 to Td12. Is done. Therefore, the average of the rotation speeds of the stepping motors ML, MC, MR during the period from time Td11 to Td12 is 0.833 (= 80/96) step / msec, and the stepping motors ML, MC, MR appear as The rotation speed is 0.833 step / msec.
[0047]
Thereafter, within a period corresponding to three control cycles, a total of three pulse signals are output by outputting a pulse signal for each control cycle, and then two control cycles following the control cycle are output. This cycle is repeated 16 times with a pulse output mode in which one pulse signal is output within the period of 1 as one cycle. The period in which the 16 cycles are performed (the period from time Td12 to Td13) corresponds to the length of 80 control periods, and a total of 64 pulse signals are output from the CPU 21 throughout the period from time Td12 to Td13. Is done. Therefore, the average rotational speed of the stepping motors ML, MC, MR during the period from time Td12 to Td13 is 0.8 (= 64/80) step / msec, and the stepping motors ML, MC, MR are apparently The rotation speed is 0.8 step / msec.
[0048]
Subsequently, within a period corresponding to two control cycles, a total of two pulse signals are output by outputting a pulse signal for each control cycle, and then two control signals following the control cycle are output. This cycle is repeated 16 times with a pulse output mode in which one pulse signal is output within the period of 1 as one cycle. The period during which the 16 cycles are performed (the period from time Td13 to Td14) corresponds to the length of 64 control periods, and a total of 48 pulse signals are output from the CPU 21 throughout the period from time Td13 to Td14. Is done. Therefore, the average rotation speed of the stepping motors ML, MC, MR during the period from time Td13 to Td14 is 0.75 (= 48/64) step / msec, and the stepping motors ML, MC, MR are apparently It is rotated at a rotation speed of 0.75 step / msec.
[0049]
Further, a pulse output mode in which one pulse signal is output within a period corresponding to one cycle of the control cycle and then one pulse signal is output within a period corresponding to two cycles of the control period following the control cycle. This cycle is repeated 16 times as one cycle. The period in which the 16 cycles are performed (the period from time Td14 to Td15) corresponds to the length of 48 control periods, and a total of 32 pulse signals are output from the CPU 21 throughout the period from time Td14 to Td15. Is done. Therefore, the average of the rotation speeds of the stepping motors ML, MC, MR during the period from time Td14 to Td15 is 0.667 (= 32/48) step / msec, and the stepping motors ML, MC, MR appear as follows: The rotation speed is 0.667 step / msec.
[0050]
Thereafter, one pulse signal is output within a period corresponding to one cycle of the control cycle, and then a pulse signal is output every two cycles of the control cycle within a period corresponding to four cycles of the control cycle that follows. This cycle is repeatedly performed 16 times, with a pulse output mode in which a total of two pulse signals are output by outputting, as one cycle. The period in which the 16 cycles are performed (the period from time Td15 to Td16) corresponds to the length of 80 control periods, and a total of 48 pulse signals are output from the CPU 21 throughout the period from time Td15 to Td16. Is done. Therefore, the average rotational speed of the stepping motors ML, MC, MR during the period from time Td15 to Td16 is 0.6 (= 48/80) step / msec, and the stepping motors ML, MC, MR are apparently The rotation speed is 0.6 step / msec.
[0051]
Further, after one pulse signal is output within a period corresponding to one period of the control period, a period corresponding to six periods of the control period that follows is output every two periods of the control period. This cycle is repeated 16 times, with a pulse output mode of outputting a total of three pulse signals by outputting a pulse signal as one cycle. The period in which the 16 cycles are performed (the period from time Td16 to Td17) corresponds to the length of 112 control periods, and a total of 64 pulse signals are output from the CPU 21 throughout the period from time Td16 to Td17. Is done. Therefore, the average rotational speed of the stepping motors ML, MC, MR during the period from time Td16 to Td17 is 0.571 (= 64/112) step / msec, and the stepping motors ML, MC, MR are apparently The rotation speed is 0.571 step / msec.
[0052]
Thereafter, after one pulse signal is output within a period corresponding to one period of the control period, a pulse is generated every two control periods within a period corresponding to eight periods of the control period. This cycle is repeated 16 times with a pulse output mode in which a total of four pulse signals are output by outputting a signal as one cycle. The period during which the 16 cycles are performed (the period from time Td17 to Td18) corresponds to the length of 144 periods of the control period, and a total of 80 pulse signals are output from the CPU 21 throughout the period from time Td17 to Td18. Is done. Therefore, the average rotational speed of the stepping motors ML, MC, MR in the period from time Td17 to Td18 is 0.556 (= 80/144) step / msec, and the stepping motors ML, MC, MR appear as follows: The rotation speed is 0.556 step / msec.
[0053]
Thereafter, after one pulse signal is output within a period corresponding to one period of the control period, within a period corresponding to 10 periods of the subsequent control period, every two periods of the control period. This cycle is repeated 16 times, with a pulse output mode of outputting a total of five pulse signals by outputting pulse signals as one cycle. The period in which the 16 cycles are performed (the period from time Td18 to Td2) corresponds to the length of 176 periods of the control period, and a total of 96 pulse signals are output from the CPU 21 throughout the period from time Td18 to Tu9. Is done. Therefore, the average of the rotation speeds of the stepping motors ML, MC, MR during the period of time Td18 to Td2 is 0.545 (= 96/176) step / msec, and the stepping motors ML, MC, MR appear as follows: The rotation speed is 0.545 step / msec.
[0054]
When the apparent rotational speed of the stepping motors ML, MC, MR is lowered to 0.545 step / msec in this way, this gradual reduction control is finished, and thereafter, the pulse signal generation process is performed every two control cycles. By outputting a pulse signal, the stepping motors ML, MC, MR are rotated at a rotation speed of 0.5 step / msec.
As described above, in the slow-up period shown in FIGS. 2 and 3, the rotational speed of the stepping motors ML, MC, MR is changed from the rotational speed when the pulse signal is output every two control cycles to the maximum rotational speed. Is gradually increased to increase the rotational speed of the stepping motors ML, MC, MR. Thereby, smooth acceleration of the stepping motors ML, MC, MR can be achieved throughout the entire slow-up period.
[0055]
In the slow-down period shown in FIGS. 4 and 5, the rotational speed of the stepping motors ML, MC, MR is decreased from the maximum rotational speed to the rotational speed when the pulse signal is output every two control cycles. And when the rotation speed of the stepping motors ML, MC, MR is output every three cycles of the control cycle from the rotation speed when the pulse signal is output every two cycles of the control cycle. When the rotational speed is lowered, a gradual decrease control for gradually decreasing the rotational speeds of the stepping motors ML, MC, MR is performed. Thereby, the smooth deceleration of the stepping motors ML, MC, MR can be achieved throughout the slowdown period.
[0056]
Note that the rotation speed of the stepping motors ML, MC, MR is changed from the rotation speed when the pulse signal is output every two cycles of the control cycle to the rotation speed when the pulse signal is output every three cycles of the control cycle. For example, the gradual decrease control performed at the time of lowering to 1 is to output one pulse signal every two control cycles within a period corresponding to 2 × p (p: natural number) of the control cycle. After outputting a total of p pulse signals by the above, a total of q pulse signals are output by outputting one pulse signal every three cycles within a period corresponding to 3 × q (q: natural number) cycles of the control cycle that follows. This cycle is repeated a predetermined number of times, with the pulse output mode of outputting a pulse signal of 1 cycle being a predetermined number of times, and q for the above p for every predetermined period (for example, 16 cycles) The content may be controlled such that the ratio is increased.
[0057]
That is, the rotational speeds of the stepping motors ML, MC, MR are set to the rotational speed when a pulse signal is output every N (N: natural number) of the control cycle and every N + n (n: natural number) of the control cycle. The gradual increase control and gradual decrease control performed in the process of switching to the rotation speed when the pulse signal is output are the first period corresponding to the N period of the control period or the N + n period corresponding to the control period. The pulse output mode is such that after outputting p pulse signals in one of the two periods, q pulse signals are output in the other period of the first period or the second period. As described above, the control may be such that the cycle is repeated a plurality of times and the ratio of q to p is changed every predetermined period.
[0058]
Further, the gradual increase control and the gradual decrease control include a period in which a state in which a pulse signal is output every N cycles of the control cycle and a state in which a pulse signal is output every N + n cycles of the control cycle are included. The N + m (m: a natural number other than n) cycle of the control cycle is sufficient to output a pulse signal every N cycles of the control cycle and to output a pulse signal every N + n cycles of the control cycle. A state in which a pulse signal is output every time may be further mixed.
[0059]
  Furthermore, in the above-described embodiment, the example in which the present invention is applied to the control of the stepping motor provided in the pachinko machine has been described. It can also be applied to motor controlThe
[0060]
In addition, various design changes can be made within the scope of matters described in the claims.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an electrical configuration of a pachinko machine according to an embodiment of the present invention, and particularly shows a configuration of a part related to control of a symbol display.
FIG. 2 is a time chart for explaining stepping motor control (slow-up control) in a slow-up period.
FIG. 3 is a time chart for explaining control for gradually increasing the rotation speed of the stepping motor from 0.5 step / msec to 1.0 step / msec.
FIG. 4 is a time chart for explaining stepping motor control (slow down control) in a slow down period;
FIG. 5 is a time chart for explaining control for gradually decreasing the rotation speed of the stepping motor from 1.0 step / msec to 0.5 step / msec.
FIG. 6 is a time chart for explaining conventional slow-up control.
[Explanation of symbols]
1 Symbol display
2 Symbol display control board
21 CPU
22 RAM
23 ROM
3 Main control board
31 CPU
32 RAM
33 ROM
DL, DC, DR drum
ML, MC, MR Stepping motor

Claims (3)

A stepping motor control device for controlling a stepping motor provided in a gaming machine for displaying symbols of the gaming machine,
Pulse signal output means for outputting a pulse signal;
By repeatedly outputs a pulse signal for every period of the pre-determined control cycle from the pulse signal output means, a first rotational speed control means for rotating the stepping motor at the maximum rotational speed,
Second rotation speed control means for rotating the stepping motor at 1/2 rotation speed that is 1/2 of the maximum rotation speed by repeatedly outputting a pulse signal from the pulse signal output means every two cycles of the control period. When,
In the process of switching the rotation speed of the stepping motor between the maximum rotation speed and the 1/2 rotation speed, a pulse signal is output every one of the control cycles and a pulse signal is output every two control cycles. by controlling the pulse signal output means so that the state to be output are mixed, the stepping motor third rotational speed control means for rotating at a rotational speed between the maximum rotation speed and the 1/2 speed viewing including the door,
The third rotation speed control means is the pulse signal output means in either one of a first period corresponding to one period of the control period or a second period corresponding to two periods of the control period. A pulse output of outputting a predetermined second number of pulse signals from the pulse signal output means in the other period of the first period or the second period after outputting a predetermined first number of pulse signals from A stepping motor control device characterized in that the stepping motor is rotated by repeating this cycle a plurality of times with one aspect as a cycle . In the process of switching the rotation speed of the stepping motor between the maximum rotation speed and the 1/2 rotation speed, the third rotation speed is changed by changing the ratio of the first number and the second number every predetermined period. the rotational speed that will be realized by the control unit stepping motor control apparatus according to claim 1, further comprising a speed changing means for changing for each of the predetermined period. A jackpot lottery execution means for executing a jackpot lottery in response to a predetermined condition being satisfied;
A drum on which a pattern for displaying the result of the jackpot lottery by the jackpot lottery execution means is drawn on the circumference;
A stepping motor for rotationally driving the drum;
Motor control means for controlling the rotation of the stepping motor,
As the motor control means, a game machine, wherein a stepping motor control apparatus according to claim 1 or 2 is applied.

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