WO2005094124A1 - Dispositif equilibreur - Google Patents

Dispositif equilibreur Download PDF

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Publication number
WO2005094124A1
WO2005094124A1 PCT/JP2005/005383 JP2005005383W WO2005094124A1 WO 2005094124 A1 WO2005094124 A1 WO 2005094124A1 JP 2005005383 W JP2005005383 W JP 2005005383W WO 2005094124 A1 WO2005094124 A1 WO 2005094124A1
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WO
WIPO (PCT)
Prior art keywords
control
voltage
fader
motor
motor driver
Prior art date
Application number
PCT/JP2005/005383
Other languages
English (en)
Japanese (ja)
Inventor
Ryo Yano
Yoshio Ubukata
Nao Morikawa
Masayuki Hibino
Keisuke Taguchi
Original Assignee
Matsushita Electric Industrial Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co., Ltd. filed Critical Matsushita Electric Industrial Co., Ltd.
Publication of WO2005094124A1 publication Critical patent/WO2005094124A1/fr

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements

Definitions

  • the present invention relates to a feeder device including a motor that moves a fader.
  • the conventional fader device performs feedback control to move the fader to a target position.
  • the current fader position is converted to a voltage and read into the CPU via the AD converter.
  • the CPU performs feedback calculation such as PID control, and obtains an output voltage value to the motor as a calculation result.
  • the output voltage value is output to the DA converter and converted into an analog signal, and this analog signal is input to the voltage control terminal Vref of the motor driver.
  • the motor driver drives the motor according to the control signal, and the fader moves to the target position.
  • the feeder device is disclosed, for example, in Japanese Patent Application Laid-Open No. 5-176399 (pages 6-7, FIG. 5).
  • the conventional fader device has a complicated circuit configuration because the DA converter is provided between the CPU and the motor driver. Further, the fader device is provided with a large number of faders as is well known. As a result, the number of DA converters has increased and the complexity has increased.
  • the present invention has been made under the above background, and an object of the present invention is to provide a fader device having a simple circuit configuration.
  • a fader device of the present invention is connected to a fader, a motor for moving the fader, a motor driver for driving the motor, and a voltage control terminal of the motor driver.
  • a switch circuit that performs a switching operation so as to selectively supply the pressure to the motor driver; and a control unit that controls the motor driver and the switch circuit.
  • the control unit controls the switch circuit and supplies the motor driver with the control circuit. Control voltage is changed stepwise.
  • FIG. 1 is a diagram showing a configuration of a feeder device according to an embodiment of the present invention.
  • FIG. 2 is a diagram showing a configuration of an integrating circuit.
  • FIG. 3 is a diagram showing control voltage settings.
  • FIG. 4 is a diagram showing changes in a feeder position and a motor control pulse voltage in a time-series position control state.
  • FIG. 5 is a diagram showing changes in a feeder position and a motor control pulse voltage in a time-series position control state.
  • FIG. 6 is a diagram showing changes in a feeder position and a motor control pulse voltage in feedback control.
  • the fader device is connected to a fader, a motor that moves the fader, a motor driver that drives the motor, and a voltage control terminal of the motor driver, and selectively selects a plurality of levels of control voltages. And a control circuit for controlling the motor driver and the switch circuit.
  • the control unit controls the switch circuit to change the control voltage supplied to the motor driver in a stepwise manner. .
  • an integrating circuit is connected between the motor driver and the switch circuit.
  • the voltage intervals of the control voltage of the plurality of stages input to the switch circuit are unequal so that the voltage intervals of the small control voltages among the control voltages of the plurality of stages become dense. Is set to.
  • the control unit sets the length of the target update period to be equal to or longer than each target update time point in the time-series position control state in which the moving target of the fader is updated every target update period.
  • the set reversal suppression period is configured to suppress the forward / reverse switching of the motor drive voltage.
  • the control unit when the calculation result of the motor drive voltage in the feedback control of the fader position is inverted, the control unit supplies the inverted voltage to the motor for a predetermined number of control cycles. Is suppressed.
  • the predetermined number is typically one.
  • This configuration eliminates a drive voltage that is inverted for only a short period of time, about one control cycle.
  • the reversal of the drive voltage causes motor operation noise, which increases near the target position for feedback control.
  • the frequency of the short-term inversion as described above is high.
  • the influence on the positional accuracy of the feedback control is small. Therefore, the operation noise of the fader can be effectively reduced by the output suppression control as described above.
  • the feeder operating noise can be reduced by a simple control configuration that converts a control signal in the motor rotation direction to the motor driver.
  • FIG. 1 shows a feeder device according to an embodiment of the present invention.
  • the fader device 10 includes a master CPU 12 and a plurality of fader CPUs 14 controlled by the master CPU 12. Then, the fader control block 16 is controlled by each fader CPU 14. Further, each fader control block 16 includes a plurality of faders 18, which are controlled by the fader CPU 14.
  • the feeder device 10 of the present embodiment will be described, focusing on the configuration for controlling one feeder 18. However, a similar configuration is provided for all the faders 18.
  • the feeder 18 is connected to a motor 20, and the motor 20 is Connected to Liver 22.
  • the fader 18 has a slide resistor. One end of the slide resistor is connected to a voltage terminal, and the other end is grounded.
  • the slide terminal is provided so as to be movable, and is moved by the motor 20.
  • the voltage at the voltage terminal is divided at a ratio according to the position of the slide terminal, and the divided voltage is output from the slide terminal.
  • the feeder 18 is combined with a knob on a control panel (not shown). When the fader 18 moves, the knob on the operation panel also moves.
  • the voltage control terminal (reference voltage terminal) Vref of the motor driver 22 is connected to the switch circuit 26 via the integration circuit 24.
  • the switch circuit 26 is composed of, for example, an analog multiplexer.
  • the switch circuit 26 is connected to a plurality of voltage sources, and receives control voltages (reference voltages) VI, V2, V3, and V4 of a plurality of stages from these voltage sources.
  • the magnitudes of the control voltages VI, V2, V3, V4 are set differently.
  • the switch circuit 26 is controlled by the fader CPU14.
  • the fader CPU 14 changes the control voltage supplied to the motor driver 22 stepwise by causing the switch circuit 26 to perform a switching operation.
  • the control voltage signal has a pulse shape.
  • the motor driver 22 supplies a drive voltage (output voltage) corresponding to the control voltage to the motor 20. Therefore, the acceleration of the motor 20 can be variably controlled by the switching operation of the switch circuit 26.
  • a control signal relating to the motor rotation direction is input from the fader CPU 14 to the motor driver 22.
  • This control signal instructs the motor driver 22 to perform one of forward rotation, reverse rotation, inertial rotation, and brake control. In forward rotation and reverse rotation, voltages in opposite directions are applied to the motor 20. When the inertial rotation is instructed, the motor driver 22 sets the drive voltage to zero.
  • the fader 18 is connected to an AD converter 28, and the AD converter 28 is connected to the feeder CPU 14.
  • the position information of the feeder 18 is converted into a voltage signal, and then converted by the AD converter 28. It is converted to digital signals and input to the feeder CPU14.
  • the fader CPU 14 performs feedback calculation of PID control based on the position information of the fader.
  • Fader position information is supplied to the master CPU 12 at predetermined time intervals.
  • the master CPU 12 determines the target position of each of the controlled feeders 18.
  • the determined target value is supplied to the feeder CPU 14 at predetermined time intervals in the form of a movement command.
  • the feeder CPU 14 performs the above-described feedback calculation so as to achieve the target position indicated by the movement command of the master CPU 12.
  • a motor drive voltage is calculated, and a control voltage to be supplied to the motor driver 22 is obtained.
  • the fader CPU 14 controls the switch circuit 26 so that the obtained control voltage is supplied to the motor driver 22.
  • the switch circuit 26 is controlled to change the connected power supply line.
  • the switch circuit 26 is controlled so that the control voltage gradually decreases.
  • the control voltage is supplied to the motor driver 22 through the integration circuit 24.
  • the fader CPU 14 sends a control signal according to the feedback calculation to the motor driver 22. Control signals for forward rotation, reverse rotation, inertial operation (drive voltage 0), and brakes are sent.
  • the motor driver 22 supplies a drive voltage to the motor 20 according to a control voltage input to the voltage control terminal Vref.
  • This drive voltage is a voltage in a direction according to a control signal instructed from the fader CPU14. Then, pulse voltage control is performed.
  • the motor 20 rotates according to the drive voltage, and moves the feeder 18.
  • the feeder device 10 of the present embodiment changes the control voltage supplied to the motor driver 22 by the switching operation of the switch circuit 26. Therefore, the DA converter before the motor driver can be eliminated. Thereby, the circuit configuration can be simplified.
  • control voltage changes in four steps (VI-V4).
  • the number of control voltage switching stages is not limited to four, and may be, for example, five or more.
  • the DA converter is abolished, and the switch circuit 26 is provided.
  • the control voltage supplied to the voltage control terminal Vref changes steplessly.
  • the control voltage changes abruptly each time the switch is switched, and discontinuity of the acceleration occurs.
  • the play of the slider in the feeder, the pulse driving sound generated by the power of the belt and the motor for driving the feeder, and the like may be increased, and a quality problem may occur. Therefore, as described below, the present embodiment is provided with a configuration for reducing the operation sound of the feeder 18 and keeping it quiet.
  • an integrating circuit 24 is provided between the motor driver 22 and the switch circuit 26.
  • FIG. 2 shows an example of the integration circuit 24.
  • the integration circuit 24 has a resistor 40 and a capacitor 42. Both ends of the resistor 40 are connected to the motor driver 22 and the switch circuit 26. One end of the resistor 40 is grounded via the capacitor 42 on the motor driver 22 side.
  • the resistance value R of the resistor 40 is lk ⁇
  • the capacitance C of the capacitor 42 is 0.1 ⁇ F.
  • the pulse waveform of the control voltage signal is smoothed, so that harmonics are suppressed. As a result, the operation sound of the fader 18 is reduced.
  • FIG. 3 shows an example of setting the control voltages VI, V2, V3, and V4.
  • the control voltages VI, V2, V3, and V4 are set such that the step decreases as the voltage value decreases. That is, the voltage intervals of the control voltages VI, V2, V3, and V4 are unequal, and the intervals between the small control voltages are dense.
  • the control voltages VI, V2, V3, and V4 are, for example, 0.8V, 1.8V, 3.3V, and 6V.
  • the fader 18 when the moving speed of the feeder 18 with a large motor drive voltage is high, the fader 18 emits a continuous sliding sound (a squealing sound when the feeder 18 runs).
  • the pulse striking sound of the feeder 18 is masked by the sliding sound, and is not intuitive.
  • the continuous sliding noise decreases, and the pulse hitting sound becomes conspicuous.
  • the step difference S of the control voltage when the voltage value is small, the step difference S of the control voltage becomes small. Therefore, in a situation where the pulse hitting sound of the fader 18 is conspicuous, the voltage change width can be reduced, and the pulse hitting sound can be reduced.
  • Such an effective reduction of the operation sound can be realized by a simple configuration that only makes the voltage interval non-uniform.
  • control voltages VI, V2, V3, and V4 are 0.8 V, 1.8 V, 3.3 V, and 6 V, and the voltage intervals are 0.8, 1, and 1. 5, 2. 7, and!
  • the voltage interval may be such that the interval between small voltages among the plurality of control voltages is larger than the interval between large voltages.
  • control voltages VI, V2, V3, and V4 may be IV, 2V, 3V, and 5V.
  • the voltage intervals in this case are 1, 1, 1, and 2.
  • the interval on the low voltage side is the same as or smaller than the interval on the high voltage side.
  • the voltage interval between the smaller voltages becomes denser. Therefore, such a voltage setting is also included in the scope of the present invention.
  • Feeder control can be broadly divided into two types.
  • One is a control for instantly calling a volume adjustment state stored in advance.
  • a plurality of feeders move instantaneously all at once toward a moving target (target position). Masked by the continuous sliding noise of the feeder, the pulse hitting sound is not bothersome.
  • the convergence operation near the moving target is instantaneously completed, the pulse hitting sound is less noticeable.
  • another type of feeder control is time-series position control, in which the moving targets of the feeders are sequentially updated.
  • This control is a control to slowly move the fader to the final volume value while changing the volume in time series.
  • This control is performed, for example, when the position of the fader is sequentially controlled in accordance with memory data stored in advance. Further, for example, when one fader is set so as to be linked with another fader, and the position of the fader is controlled so as to follow a manual operation of another fader, the above-described control is suitably performed.
  • the moving target of the feeder is updated at a certain time interval (target updating cycle, for example, several ms—one hundred and several tens ms), and successively toward a new moving target. Hue I Is controlled. In this case, the updated moving target is near the current position. Therefore, in the feeder position control, the convergence operation is always repeated. The repetition of forward and reverse rotations of the motor output continues, so that the pulse hitting sound becomes conspicuous.
  • target updating cycle for example, several ms—one hundred and several tens ms
  • FIG. 4 shows the feeder control when the above time-series position control is performed.
  • the operation sound countermeasure control of the present embodiment described later is not performed.
  • the moving target of the fader is updated every target update period Tu (for example, 30 ms).
  • Tu for example, 30 ms
  • the current feeder position is approaching the moving target position during the target update period Tu.
  • the feeder position is almost always near the moving target, the motor speed is adjusted while the motor output repeats forward and reverse rotation, and accurate convergence to the moving target is achieved. It is planned.
  • the discontinuity of the acceleration becomes severe. Therefore, the pulse impact sound is most noticeable immediately before the convergence of the hood to the target movement position.
  • FIG. 5 shows the control according to the present embodiment.
  • the moving target as in Fig. 4 is updated every target update period Tu.
  • the inversion suppression period Ts is set.
  • the inversion suppression period Ts is equal to or longer than the target update period Tu, and is set longer than the target update period Tu in the present embodiment. Then, during the reversal suppression period Ts from each target update time point, control for suppressing the forward / reverse switching of the motor drive voltage is performed.
  • the fader CPU 14 performs feedback control of the fader position as described above.
  • the calculation result of the voltage may be inverted. That is, a voltage that is reversed in the direction in which the target value is first given and started to move may be calculated.
  • the feeder CPU 14 normally sends a control signal for inversion to the motor driver 22.
  • the control signal is changed so that the forward rotation force also reverses.
  • the fader CPU 14 sends a control signal for instructing the inertial operation to the motor driver 22 instead of the control signal for inversion.
  • the inversion operation result is ignored. In other words, as shown in FIG. 5, the motor control pulse voltage switches to the forward rotation and the reverse rotation. Instead, it is 0.
  • the update of the moving target ends.
  • the moving target coincides with the final target position, and the moving target is not updated even after the target updating period.
  • the reversal suppression period Ts does not start anew.
  • the inversion suppression period Ts also elapses.
  • the inversion of the drive voltage is allowed.
  • the feedback control to the moving target is performed, the forward / reverse switching of the output voltage to the motor is also performed, and the feeder moves to the final moving target.
  • the accuracy of the final stop position does not decrease.
  • the pulse impact sound in the time-series position control is provided. Can be effectively reduced.
  • final positional accuracy can be ensured.
  • the calculation result of the motor drive voltage is inverted in the feedback control of the fader CPU 14 force fader position
  • the output of the inverted voltage is suppressed for a predetermined number of control cycles.
  • the predetermined number of times is one.
  • the inversion suppression control is performed by the fader CPU14.
  • the fader CPU 14 is By transmitting a control signal for the sexual rotation, voltage reversal is suppressed. By such control, inversion of only one control cycle of the feedback operation result is ignored. As a result, as described below, fader movement noise is effectively reduced.
  • the motor drive voltage and the motor acceleration corresponding thereto change periodically.
  • the drive voltage repeats normal rotation and reverse rotation as described above.
  • the moving speed is adjusted, and the position of the feeder converges to the moving target.
  • This inversion of one control cycle is considered to have a small contribution to position accuracy.
  • the reversal of one control period causes discontinuity of acceleration, which greatly affects pulse hitting sound.
  • the voltage inversion for only one control cycle is removed by setting the first pulse voltage at the time of voltage inversion to 0.
  • the voltage reversal of the force is eliminated within the range that does not adversely affect the position accuracy, and the discontinuity of the acceleration due to the voltage reversal can be removed. Therefore, the pulse hitting sound can be effectively reduced while ensuring the positional accuracy.
  • the output of the first pulse is suppressed. Therefore, the drive voltage changes stepwise, for example, forward, 0, reverse.
  • the discontinuity of the driving voltage can be reduced. Also in this respect, the pulse hitting sound is reduced.
  • the feeder device 10 of the present embodiment suppresses the output of the inversion voltage in the control cycle for a predetermined number of times when the voltage of the feedback calculation result is inverted. Thereby, the fader operation sound can be effectively reduced. Further, it is possible to reduce the noise of the operation of the feeder with a simple configuration in which the voltage is suppressed for a predetermined number of control cycles.
  • the circuit configuration can be simplified by employing the switch circuit 26.
  • the operation sound of the feeder when the switch circuit 26 is used can be effectively reduced.
  • the above-described effects can be obtained regardless of whether the number of motor control pulse voltages is plural or one.
  • a plurality of types of fader operation sound reduction techniques have been proposed. All of those configurations may be employed in one feeder device. Further, a part of the configuration may be adopted.
  • the present invention is not limited to the feeder device as a music mixer.
  • the present invention may be applied to, for example, a lighting apparatus for lighting.
  • the fader device according to the present invention has the effect of simplifying the circuit configuration, and is useful as a music mixer or the like.

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  • Circuit For Audible Band Transducer (AREA)
  • Adjustable Resistors (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

La présente invention a trait à un moteur (20) de déplacement d'un équilibreur (18). Un excitateur de moteur (22) entraîne le moteur (20). Un circuit de commutation (26) est connecté à la borne de commande de tension de l'excitateur de moteur (22). Le circuit de commutation (26) exécute la commutation de manière à alimenter sélectivement une tension de commande en plusieurs étapes à l'excitateur de moteur (22). Une unité centrale de traitement d'équilibreur (14) commande l'excitateur de moteur (22) et le circuit de commutation (26). l'unité centrale de traitement d'équilibreur (14) commande le circuit de commutation (26) pour la modification d'une tension de commande alimentée à l'excitateur de moteur (22) par étapes. Un circuit d'intégration est prévu entre l'excitateur de moteur (22) et le circuit de commutation (26). Par conséquent, la configuration de circuit du dispositif équilibreur est simplifiée.
PCT/JP2005/005383 2004-03-26 2005-03-24 Dispositif equilibreur WO2005094124A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004-091652 2004-03-26
JP2004091652A JP2005278046A (ja) 2004-03-26 2004-03-26 フェーダ装置

Publications (1)

Publication Number Publication Date
WO2005094124A1 true WO2005094124A1 (fr) 2005-10-06

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PCT/JP2005/005383 WO2005094124A1 (fr) 2004-03-26 2005-03-24 Dispositif equilibreur

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JP (1) JP2005278046A (fr)
CN (1) CN1939093A (fr)
WO (1) WO2005094124A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4961788B2 (ja) * 2006-03-20 2012-06-27 ヤマハ株式会社 半導体集積回路、音響信号処理装置及び操作装置
US9929822B2 (en) * 2015-08-07 2018-03-27 Yamaha Corporation Electric fader drive unit, fader device, audio mixer, and electric fader driving method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63502474A (ja) * 1986-10-10 1988-09-14 イーエムエス　エレクトロニツク　モーター　システムズ　エービー モータ付勢回路
JPH0591785A (ja) * 1991-09-26 1993-04-09 Meidensha Corp ブラシレス直流モータの制御装置
JPH05176399A (ja) * 1991-12-20 1993-07-13 Teac Corp 制御装置
JPH09130173A (ja) * 1995-11-02 1997-05-16 Sony Corp ボリューム誤操作防止方法及び装置
JP2001008489A (ja) * 1999-06-22 2001-01-12 Matsushita Electric Ind Co Ltd インバータ装置
JP2003061180A (ja) * 2001-08-16 2003-02-28 Teac Corp 操作体およびオーディオミキサー

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63502474A (ja) * 1986-10-10 1988-09-14 イーエムエス　エレクトロニツク　モーター　システムズ　エービー モータ付勢回路
JPH0591785A (ja) * 1991-09-26 1993-04-09 Meidensha Corp ブラシレス直流モータの制御装置
JPH05176399A (ja) * 1991-12-20 1993-07-13 Teac Corp 制御装置
JPH09130173A (ja) * 1995-11-02 1997-05-16 Sony Corp ボリューム誤操作防止方法及び装置
JP2001008489A (ja) * 1999-06-22 2001-01-12 Matsushita Electric Ind Co Ltd インバータ装置
JP2003061180A (ja) * 2001-08-16 2003-02-28 Teac Corp 操作体およびオーディオミキサー

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CN1939093A (zh) 2007-03-28

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