JPS63194596U

JPS63194596U -

Info

Publication number: JPS63194596U
Application number: JP1987085543U
Authority: JP
Priority date: 1987-06-02
Filing date: 1987-06-02
Publication date: 1988-12-14

Description

[Brief explanation of the drawing]

第１図は、本考案に係るモータの制御装置の実
施例の構成を示すブロツク図、第２図は、第１図
のＣＰＵの端子の出力信号と各駆動状態との関係
を示す信号状態説明図、第３図は、本考案の実施
例に用いるモータを駆動する駆動パルスの代表的
な波形をグラフＧ１〜グラフＧ３にて示す波形図
、第４図は、本考案の実施例の動作順序を示すフ
ローチヤート、第５図は、速度制御の特性を示す
線図である。１…モータ、２…駆動回路、３〜６…トランジ
スタ、９，１０…逆起電圧測定用抵抗、１１…Ｃ
ＰＵ、１２，１３…スイツチ、Ａ／Ｄ…入力端子
、Ｍ１，Ｍ２，Ｍ３，Ｍ４…出力端子、ＣＷ，Ｃ
ＣＷ…入力端子、Ｚ…駆動パルスの周期、Ｘ…駆
動パルスのＯＮ時間（パルス幅）、Ｙ…駆動パル
スのＯＦＦ時間。 FIG. 1 is a block diagram showing the configuration of an embodiment of a motor control device according to the present invention, and FIG. 2 is a signal state explanation showing the relationship between the output signal of the terminal of the CPU in FIG. 1 and each drive state. 3 are waveform diagrams showing typical waveforms of drive pulses for driving the motor used in the embodiment of the present invention using graphs G1 to G3, and FIG. 4 is a waveform diagram showing the operation sequence of the embodiment of the present invention. The flowchart shown in FIG. 5 is a diagram showing characteristics of speed control. DESCRIPTION OF SYMBOLS 1...Motor, 2...Drive circuit, 3-6...Transistor, 9, 10...Resistance for measuring back electromotive force, 11...C
PU, 12, 13...Switch, A/D...Input terminal, M1, M2, M3, M4...Output terminal, CW, C
CW...input terminal, Z...period of drive pulse, X...ON time (pulse width) of drive pulse, Y...OFF time of drive pulse.

Claims

[Scope of utility model registration request]

In a motor control device that maintains a substantially constant rotational speed by intermittent control of energization to a motor whose rotational speed changes due to fluctuations in a mechanical load connected to a driving shaft, an intermittent means for performing an intermittent operation of intermittent energization, a back electromotive voltage detection means for detecting a back electromotive voltage generated in the motor that continues to rotate due to inertia after the energization to the motor is cut off, and this back electromotive voltage. pulse width determining means for receiving the output of the detection means and determining an ON time during which the motor is energized and an OFF time during which the energization is cut off, depending on the magnitude of the back electromotive voltage; A rotation speed control means consisting of an intermittent control means for receiving an output and controlling the intermittent operation is added, and the counter electromotive force detection means is used as a motion detection means for detecting the motion state of the driving shaft or the mechanical load. stop detection means for receiving the output of the electromotive voltage detection means and outputting a stop detection signal when the counter electromotive voltage is smaller than a predetermined reference value; drive state detection means that determines whether or not the motor is present, and instructs the intermittent means not to resume energization of the motor when the motor is in the non-driveable state; A motor control device characterized in that the drive state detection means is configured to share a part of the rotational speed control means.