JPS60146924A - Control circuit of electromagnetic clutch - Google Patents

Control circuit of electromagnetic clutch

Info

Publication number
JPS60146924A
JPS60146924A JP59002638A JP263884A JPS60146924A JP S60146924 A JPS60146924 A JP S60146924A JP 59002638 A JP59002638 A JP 59002638A JP 263884 A JP263884 A JP 263884A JP S60146924 A JPS60146924 A JP S60146924A
Authority
JP
Japan
Prior art keywords
electromagnet
electromagnetic clutch
zero
pulse signal
signal
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP59002638A
Other languages
Japanese (ja)
Inventor
Yoshio Otani
大谷　佳男
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bosch Corp
Original Assignee
Diesel Kiki 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 Diesel Kiki Co Ltd filed Critical Diesel Kiki Co Ltd
Priority to JP59002638A priority Critical patent/JPS60146924A/en
Priority to US06/690,745 priority patent/US4636912A/en
Publication of JPS60146924A publication Critical patent/JPS60146924A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
    • H03K17/64—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors having inductive loads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
    • F16D48/064—Control of electrically or electromagnetically actuated clutches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/10—System to be controlled
    • F16D2500/102—Actuator
    • F16D2500/1021—Electrical type
    • F16D2500/1022—Electromagnet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/50—Problem to be solved by the control system
    • F16D2500/502—Relating the clutch
    • F16D2500/50293—Reduction of vibrations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/70—Details about the implementation of the control system
    • F16D2500/704—Output parameters from the control unit; Target parameters to be controlled
    • F16D2500/70402—Actuator parameters
    • F16D2500/7041—Position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/70—Details about the implementation of the control system
    • F16D2500/704—Output parameters from the control unit; Target parameters to be controlled
    • F16D2500/70402—Actuator parameters
    • F16D2500/7042—Voltage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/70—Details about the implementation of the control system
    • F16D2500/704—Output parameters from the control unit; Target parameters to be controlled
    • F16D2500/70422—Clutch parameters
    • F16D2500/70426—Clutch slip
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/70—Details about the implementation of the control system
    • F16D2500/71—Actions
    • F16D2500/7107—Others
    • F16D2500/7109—Pulsed signal; Generating or processing pulsed signals; PWM, width modulation, frequency or amplitude modulation

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

PURPOSE:To prevent a shock in a clutch when it is connected, by exciting the electromagnetic clutch so as to decrease the length of its air gap to zero thereafter gradually increasing excitation energy from a level enough for holding the length of the air gap to zero. CONSTITUTION:Voltage V1 at one end of a start switch 7 is input to a monostable multivibrator 15 consisting of OR gates 10, 11 resistors 12, 13 and a capacitor 14. And if the switch 7 is closed, the monostable multivibrator 15 outputs the first pulse signal P1 to excite an electromagnet 3, and when this causes the length of an air gap between the electromagnet 3 and a pole plate to become zero, a level of the first pulse signal P1 decreases to zero. Subsequently, the second pulse signal P2 from a signal generator circuit 19 is applied to the other input terminal of an OR gate 16, gradually eliminating a slip condition between the electromagnet 3 and the pole plate in an electromagnetic clutch 2 and controlling it from a half-clutch condition to the completely connected condition.

Description

【発明の詳細な説明】 本発明は電磁クラッチの制御回路に関し、更に詳細に述
べると、電磁クラッチの接続時のシ冒。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control circuit for an electromagnetic clutch, and more specifically, to a control circuit for an electromagnetic clutch.

りを防止するようにした電磁クラ、チの制御回路に関す
る。This invention relates to a control circuit for an electromagnetic clutch that prevents damage.

例えば車輛用空気調和装置の如き車輛用補機類において
電磁クラッチが用いられているが、この電磁クラッチに
あっては、励磁電流の印加と同時にクラッチが完全接続
されるため、駆動側及び被動側に大きな機械的シ■ツク
が生じ、装置の寿命を縮めると共に運転フィーリングが
悪いという問題を有していた。上述の不具合を解決する
ため、本出願人は、コンプレッサ駆動用電磁クラッチの
制御回路において、電磁クラッチの起動時に印加される
駆動７母ルスのノぐルス幅を徐々に広くシ、コンプレッ
サを徐々に回転せしめるようにした制御回路を提案した
（特開昭５８−１９１３２６号公報）。For example, electromagnetic clutches are used in vehicle auxiliary equipment such as vehicle air conditioners, but in this electromagnetic clutch, the clutch is fully connected at the same time as the excitation current is applied, so both the driving side and the driven side This has the problem of causing a large mechanical stress, shortening the life of the device and giving it a poor driving feel. In order to solve the above-mentioned problems, the present applicant gradually widened the noggle width of the drive 7 main pulse applied at the time of starting the electromagnetic clutch in the control circuit of the electromagnetic clutch for driving the compressor, thereby gradually increasing the speed of the compressor. A control circuit for rotation was proposed (Japanese Unexamined Patent Publication No. 191326/1983).

−しかしながら、この提案された装置は、空隙が零の電
磁クラッチに対しては有効であるが、切離し状態におい
て磁極板と電磁石との間に空隙を有している電磁クラッ
チの場合には、この提案された装置によっては接続時の
機械的シ曹ツクを除去することができないという欠点を
有している。即ち、電磁石においては、周知の通り１空
隙長の二乗に反比例して吸引力が増加するので、電磁ク
ラッチの励磁用駆動パルスのパルス幅を徐々に増大せし
めて励磁電流を徐々に増大させても、極板が動き始める
電流値に達すれば電磁クラッチは瞬時に接続されてしま
うからである。-However, although this proposed device is effective for electromagnetic clutches with zero air gap, this device is effective for electromagnetic clutches that have an air gap between the pole plate and the electromagnet in the disconnected state. The proposed device has the disadvantage that it is not possible to eliminate mechanical stress during connection. In other words, in an electromagnet, as is well known, the attractive force increases in inverse proportion to the square of the gap length, so even if the pulse width of the excitation drive pulse of the electromagnetic clutch is gradually increased and the excitation current is gradually increased, This is because the electromagnetic clutch is instantly connected when the current reaches a value at which the electrode plates begin to move.

本発明の目的は、従って、切離し状態において磁極板と
電磁石との間に空隙が生じる電磁クラ。Therefore, an object of the present invention is to provide an electromagnetic crane in which a gap is created between the magnetic pole plate and the electromagnet in the disconnected state.

チを、機械的シロツクなしに接続することができるよう
にした電磁クラッチ用制御回路を提供することにある。An object of the present invention is to provide a control circuit for an electromagnetic clutch that can connect a clutch without a mechanical lock.

本発明の構成は、切離し状態において磁極板と電磁石と
の間に所定の空隙長が生じる電磁クラ。The structure of the present invention is an electromagnetic club in which a predetermined gap length is created between the magnetic pole plate and the electromagnet in a disconnected state.

チの制御回路において、上記電磁クラッチの接続を指令
する指令信号を出力する手段と、上記指令信号に応答し
て上記空隙長を零とするために必要な励磁エネルギー全
上記電磁石に与えるための手段と、上記励磁エネルギー
の印加終了時において上記空隙長を零に保持するに足る
よう上記電磁石を励磁し、以後時間の経過と共に上記電
磁石の励磁力を増大せしめるための励磁信号を上記電磁
石に供給する手段とを備えた点に特徴を有する。In the control circuit of (h), means for outputting a command signal for commanding connection of the electromagnetic clutch, and means for providing all of the excitation energy necessary to make the gap length to zero in response to the command signal to the electromagnet. and, when the application of the excitation energy is finished, the electromagnet is excited enough to maintain the air gap length at zero, and thereafter, an excitation signal is supplied to the electromagnet to increase the excitation force of the electromagnet as time passes. It is characterized in that it is equipped with means.

以下、図示の実施例によシ本発明の詳細な説明する。Hereinafter, the present invention will be explained in detail with reference to the illustrated embodiments.

第１図には、本発明による電磁クラッチ用制御回路の一
実施例が示されている。この制御回路１は、切離し状態
において磁極板と電磁石との間に所定長の空隙が生じる
電磁クラッチが無衝撃にて接続されるよう制御するため
の回路であり、電磁クラッチ４２の電磁石３の一端は電
源スィッチ４を介して直流電源５の正極に接続され、電
磁石３の他端はエミッタがアースされているスイッチン
グトランジスタ６のコレクタに接続されている。FIG. 1 shows an embodiment of an electromagnetic clutch control circuit according to the present invention. This control circuit 1 is a circuit for controlling an electromagnetic clutch in which a gap of a predetermined length is created between a magnetic pole plate and an electromagnet in a disconnected state so that it is connected without impact, and one end of the electromagnet 3 of an electromagnetic clutch 42 is connected to the positive pole of a DC power source 5 via a power switch 4, and the other end of the electromagnet 3 is connected to the collector of a switching transistor 6 whose emitter is grounded.

スタートスイッチ７は、一端が電源スイッチを介して直
流電源５の正極に接続され、他端は抵抗器８，９を介し
てアースされている。スタートスイッチ７の他端の電圧
ｖｌは、オアダート１０゜１１、抵抗器１２．１３及び
コンデンサ１４がら　″構成される単安定マルチバイブ
レータ１５に入力されておシ、電源スィッチ４が閉じら
れている状態においてスタートスイッチ７が閉じられ、
電圧ｖ１のレベルが低レベルから高レベルに変化すると
、該単安定マルチバイブレータ１５がトリガされ、所定
のパルス幅の第１ノやルス信号Ｐ、が出力される。The start switch 7 has one end connected to the positive electrode of the DC power supply 5 via a power switch, and the other end grounded via resistors 8 and 9. The voltage vl at the other end of the start switch 7 is input to a monostable multivibrator 15 consisting of an or dart 10°11, resistors 12, 13, and a capacitor 14, and the power switch 4 is closed. The start switch 7 is closed at
When the level of voltage v1 changes from a low level to a high level, the monostable multivibrator 15 is triggered and a first pulse signal P having a predetermined pulse width is output.

第１ノぐルス信号Ｐ１は、オアダート１６の一方の入力
端子に印加されており、第１パルス侶号ｐｉ　の出力に
応答して出力される出力電圧Ｖ。が抵抗器１７．１８に
より分圧されてスイッチングトランジスタ６０ペースに
印加される。この結果、第１パルス信号Ｐｌのパルス幅
によって定められる時間だけスイッチングトランジスタ
６がオンとなり、電磁石３に駆動電流が流れる。第１ノ
やルス信号Ｐｌのノ４ルス幅は、電磁石３と磁極板（図
示せず）との間の所定の空隙長を零とするのに必要な励
磁エネルギーが電磁石３に与えらするよ・う：に、直流
電源５の電圧を前照して定められる。従って、スタート
スイッチ７が閉じられて第１ノ母ルス信号Ｐ１が出力さ
れ、電磁石３が励磁され、これによシミ磁石３と磁極板
との間の空隙長が零と力った時に第１パルス信号ｐ、の
レベルが零となり、第１パルス信号Ｐ１による電磁石３
の励磁動作が終了する。The first pulse signal P1 is applied to one input terminal of the or dart 16, and is the output voltage V output in response to the output of the first pulse signal pi. is divided by resistors 17 and 18 and applied to switching transistor 60. As a result, the switching transistor 6 is turned on for a time determined by the pulse width of the first pulse signal Pl, and a drive current flows through the electromagnet 3. The first pulse width of the first pulse signal Pl is such that the excitation energy necessary to zero the predetermined gap length between the electromagnet 3 and the magnetic pole plate (not shown) is given to the electromagnet 3.・U: It is determined by considering the voltage of the DC power supply 5. Therefore, when the start switch 7 is closed and the first pulse signal P1 is output, the electromagnet 3 is excited, and when the gap length between the stain magnet 3 and the magnetic pole plate becomes zero, the first The level of the pulse signal p becomes zero, and the electromagnet 3 due to the first pulse signal P1
The excitation operation ends.

上述の如くして電磁石３と磁極板との間の空隙長が零と
なった後、電磁クラッチ２における電磁石３と磁極板と
の間のすべり状態が徐々に解消され、半クラツチ状態を
へて睨合接続状態となるよう電磁クラッチ２を駆動する
ため、単安定マルチバイブレータ１５とは別に設けられ
た信号発生回路１９からの第２パルス信号Ｐ２がオアゲ
ート１６の他方の入力端子に印加されている。After the gap length between the electromagnet 3 and the magnetic pole plate becomes zero as described above, the slipping state between the electromagnet 3 and the magnetic pole plate in the electromagnetic clutch 2 is gradually eliminated, and the state passes through the half-clutch state. In order to drive the electromagnetic clutch 2 so that it is in a locked state, a second pulse signal P2 from a signal generation circuit 19 provided separately from the monostable multivibrator 15 is applied to the other input terminal of the OR gate 16. .

信号発生回路１９は、第２図（ＩＬ）に示される三角波
信号Ｓ１を出力する三角波発生器２０と、第２図（ｂ）
に示される如くレベル変化する比較信号Ｓ２を出力する
比較信号発生回路２１と、三角波信号Ｓ１と比較信号Ｓ
２とのレベル比較を行なう電圧比較器２２とから成って
いる。比較信号発生回路２１は、抵抗器８．９及びスタ
ートスイッチ７の他端とアースとの間に設けられた抵抗
器２３とコンデンサ２４との直列回路を含んでおシ、抵
抗器８．９の接続点Ａと、抵抗器２３とコンデンサ２４
との接続点Ｂとの間にはダイオード２５が図示の極性に
接続されている。従って、スタートスイッチ７を閉じる
と、接続点Ａには、抵抗器８゜９によシ分圧された電圧
ｖ８が現われ、コンデンサ２４はダイオード２５を介し
てこの電圧ｖｌＬによって充電される。コンデンサ２４
は、抵抗器２３を介しても充電されるが、抵抗器８の抵
抗値は抵抗器２３の抵抗値よシも充分に小さくなるよう
定められているので、コンデンサ２４の両端の電位、即
ち、比較信号発生回路２１からの比較信号Ｓ１のレベル
は、スタートスイッチ７がオンとされた時刻ｔ＝ｔｌか
ら急速に充電され、第１パルス信号Ｐｌのレベルが一担
高レベルとなってから低レベルとなる時刻ｔ＝ｔ２にお
いてＶ、−ＶＤとなる。ここでＶＤはダイオード２５の
順方向電圧降下である。The signal generation circuit 19 includes a triangular wave generator 20 that outputs the triangular wave signal S1 shown in FIG. 2 (IL), and a triangular wave generator 20 that outputs the triangular wave signal S1 shown in FIG.
A comparison signal generation circuit 21 outputs a comparison signal S2 whose level changes as shown in FIG.
2 and a voltage comparator 22 for level comparison with 2. The comparison signal generation circuit 21 includes a resistor 8.9 and a series circuit of a resistor 23 and a capacitor 24 provided between the other end of the start switch 7 and the ground. Connection point A, resistor 23 and capacitor 24
A diode 25 is connected between the connection point B and the polarity shown in the figure. Therefore, when the start switch 7 is closed, a voltage v8 divided by the resistor 8.9 appears at the connection point A, and the capacitor 24 is charged via the diode 25 with this voltage vIL. capacitor 24
is also charged through the resistor 23, but since the resistance value of the resistor 8 is determined to be sufficiently smaller than the resistance value of the resistor 23, the potential across the capacitor 24, that is, The level of the comparison signal S1 from the comparison signal generation circuit 21 is rapidly charged from time t=tl when the start switch 7 is turned on, and the level of the first pulse signal Pl reaches a high level and then becomes a low level. At time t=t2, V, -VD. Here, VD is the forward voltage drop of the diode 25.

時刻ｔ２以降においては、抵抗器２３を介してのコンデ
ンサ２４の充電が支配的となシ、抵抗器２３の抵抗値と
コンデンサ２４の容量値とによって定まる所定の時定数
をもってＢ点の電位が上昇することになる。ここで符号
２６で示されるダイオードは、スタートスイッチ７が開
かれた時に、コンデンサ２４の光電電圧を急速に放電さ
せるだめの放電路を与えるだめのものである。After time t2, charging of the capacitor 24 via the resistor 23 is dominant, and the potential at point B increases with a predetermined time constant determined by the resistance value of the resistor 23 and the capacitance value of the capacitor 24. I will do it. The diode designated here by the reference numeral 26 is intended to provide a discharge path for rapidly discharging the photoelectric voltage of the capacitor 24 when the start switch 7 is opened.

上述の如くして得られた比較信号Ｓ２は、三角波信号Ｓ
１が抵抗器２７を介して一入力端子に印加されている電
圧比較器２２の十入力端子に抵抗器２８を介して印加さ
れておシ、両信号Ｓ、　＃　８２はとこでレベル比較さ
れる。従って、電圧比較器２２の出力端子の電位は、三
角波信号Ｓｌのレベルよシも比較信号Ｓ２のレベルが高
くなった場合にのみ高レベルとなシ、第２図（ｃ）に示
す如き波形の・卆ルス信号が第２パルス信号Ｐ２として
出力される。第２　／”ルス信号Ｐ２は、オアダート１
６を介シてスイッチングトランジスタ６のペースに印加
され、第２ｓルス信号ｐ　、のレペルカ高レベルとな・
て“る場合に月・チ″トラ″／　Ｊ　ｙ、　ｐ　５　。The comparison signal S2 obtained as described above is a triangular wave signal S
1 is applied to the input terminal of the voltage comparator 22 through the resistor 28, and the levels of both signals S and #82 are compared here. . Therefore, the potential at the output terminal of the voltage comparator 22 becomes a high level only when the level of the comparison signal S2 becomes higher than the level of the triangular wave signal Sl. - The pulse signal is output as the second pulse signal P2. The second /”rus signal P2 is the or dirt 1
6 is applied to the pace of the switching transistor 6, and the second pulse signal p is at a high level.
``When it comes to the moon, it's the month.'' / J y, p 5.

がオンとなシ、電磁石３が付勢される。上記説明から判
るように、第２パルス信号Ｐ２は、ｔｌ〈ｔ　（ｔ　２
の期間中はほぼ一定デーーティ比のパルス信号であり、
ｔ≧ｔ２においては時間の経過に従ってデー−ティ比の
増大するパルス信号となっておシ、最終的には連続的に
高レベル状態となる。そして、少なくとも１−１２にお
ける第２パルス信号Ｐ２のデユーティ比は、電磁石３が
磁極板をリターンばね（図示せず）のばね力に抗して吸
引しつづけ空隙長を零に保持するに足る必要最低限の状
態に付勢されるように設定されている。is turned on, the electromagnet 3 is energized. As can be seen from the above description, the second pulse signal P2 is tl<t (t 2
During the period, it is a pulse signal with an almost constant data ratio,
When t≧t2, the pulse signal becomes a pulse signal whose duty ratio increases as time passes, and finally reaches a continuously high level state. The duty ratio of the second pulse signal P2 at least at 1-12 must be sufficient for the electromagnet 3 to continue attracting the magnetic pole plate against the spring force of a return spring (not shown) and to maintain the air gap length at zero. It is set to be energized to the minimum state.

このような構成によると、スタートスイッチ７を閉じて
第１パルス信号Ｐ１が時刻１．からｔ２ｔでの間高レベ
ルとなシ、電磁石３と磁極板との間の空隙長が丁度零と
され、以後は、第２ノぐルス信号Ｐ２によシ空隙零の状
態が受け継がれ、電磁石３と磁極板との間のすベシがＯ
から徐々に増大して１に至ることとなる。従って、電磁
クラッチは急激に接続されることがなく、電磁クラッチ
２の入力側及び出力側のいずれにも、接続時に機械的シ
ョックを与えることがなく、極めて円滑なりラッチ接続
を行なうことができる。According to such a configuration, the start switch 7 is closed and the first pulse signal P1 is output at time 1. From t2t to t2t, the air gap length between the electromagnet 3 and the magnetic pole plate becomes exactly zero, and from then on, the state of zero air gap is inherited by the second nozzle signal P2, and the electromagnet The width between 3 and the magnetic pole plate is O.
It gradually increases from 1 to 1. Therefore, the electromagnetic clutch is not suddenly connected, and no mechanical shock is applied to either the input side or the output side of the electromagnetic clutch 2 at the time of connection, and the latched connection can be performed extremely smoothly.

本実施例では、第１ノ臂ルス信号Ｐｌが印加されてがら
空隙長が零になるまでの時間を実験等によシ予め得てお
き、実験データに基づいて単安定マルチバイブレータ１
５の出力パルス幅を設定する構成としたが、空隙長が零
となったときに！磁石３に流れる電流波形に生じる変化
を検出し、これによシ第１パルス信号ｐＨによる駆動か
ら第２パルス信号Ｐ２による駆動に切換える構成として
もよい。In this embodiment, the time from when the first knee pulse signal Pl is applied until the gap length becomes zero is obtained in advance through experiments, and the monostable multivibrator 1 is adjusted based on the experimental data.
The configuration was configured to set the output pulse width of 5, but when the gap length becomes zero! A configuration may also be adopted in which a change occurring in the current waveform flowing through the magnet 3 is detected, and the drive based on the first pulse signal pH is thereby switched to the drive based on the second pulse signal P2.

また、上記実施例では、第１パルス信号Ｐ！によって空
隙長が零になった後、第２７ぐルス信号Ｐ２のデユーテ
ィ比を時間の経過と共に増大せしめこれによシフラッチ
の無衝撃接続を行なうようにしたが、本発明はこの実施
例に限定されるものではなく、例えば、第３図に示すよ
うに、スタートスイッチ７がオンになった時刻１ａから
空隙長が零になる時間ｔｂまでの間室磁石３の励磁電流
が所定のレベルＬ、を保ち、時刻ｔ２において一担空隙
長を零に維持するに必要なレベルＬ２にまで低下し、し
かるのち時間の経過と共に励磁電流のレベルが増大する
ような、アナログ形態の励磁電流を出力する回路を用い
、これによシミ磁りラ、チ２の無衝撃接続を行なうよう
にしてもよい。そして、このアナログ形態の励磁電流は
、１つの信号発生回路によシ形成されてもよいし、励磁
電流の一部のみを発生する信号発生回路を複数個用い、
これ１知 らの信号発生回路からの出力を合成して所要のアナログ
形態の励磁電流信号としてもよい。Furthermore, in the above embodiment, the first pulse signal P! After the air gap length becomes zero, the duty ratio of the 27th signal P2 is increased over time to connect the shift latch without impact. However, the present invention is limited to this embodiment. For example, as shown in FIG. 3, the excitation current of the chamber magnet 3 reaches a predetermined level L from the time 1a when the start switch 7 is turned on until the time tb when the air gap length becomes zero. A circuit that outputs an analog excitation current that decreases to the level L2 necessary to maintain the single carrier gap length at zero at time t2, and then increases the level of the excitation current with the passage of time. This may be used to effect a non-impact connection between the stain magnetic ladle and the chi 2. The analog excitation current may be generated by one signal generation circuit, or may be generated by using a plurality of signal generation circuits that generate only a part of the excitation current.
The outputs from the known signal generation circuits may be combined to form a desired analog excitation current signal.

本発明によれば、上述の如く、電磁クラッチにおける空
隙長を零にするように電磁クラッチの励磁を行ない、し
かる後、空隙長を零に保持するに足る励磁エネルギーか
ら徐々に増大する励磁エネルギーを電磁クラッチに供給
して電磁クラッチを徐々に完全接続状態に移行せしめる
よう制御するので、切離し状態において所定長の空隙が
形成される電磁クラッチにおいても、接続時に機械的シ
ョックを何ら生じさせずに電磁クラッチの接続制御を行
なうことができる優れた効果を奏する。According to the present invention, as described above, the electromagnetic clutch is excited so as to make the air gap length in the electromagnetic clutch zero, and then the excitation energy is gradually increased from the excitation energy sufficient to maintain the air gap length at zero. Since the electromagnetic clutch is controlled so that the electromagnetic clutch gradually transitions to the fully connected state, even in an electromagnetic clutch where a gap of a predetermined length is formed in the disengaged state, the electromagnetic clutch can be controlled without causing any mechanical shock when connected. This provides an excellent effect in controlling the connection of the clutch.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明による電磁クラッチ用制御回路の一実施
例を示す回路図、第２図（ａ）乃至第２図（ｂ）は第１
図に示した回路の各部の信号の波形図、第３図は励磁信
号の他の例を示す波形図である。 １・・・制御回路、２・・・電磁クラッチ、３・・・電
磁石、６・・・スイッチングトランジスタ、７・・・ス
タートスイッチ、１５・・・単安定マルチバイブレータ
、１９・・・信号発生回路、２１・・・比較信号発生回
路、２２・・・電圧比較器、Ｐｌ・・・第１パルス信号
、Ｐｌ・・・第２ノぐルス信号％Ｓ１　・・・三角波信
号、Ｓ１１・・・比較信号、ｖｌ・・・電圧。 特許ａ−１願人　ヂーゼル機器株式会社代理人　弁理士
　高　野　昌　俊 手　続　補　正　書（方式） 昭和５９年３月２９日 特許庁＆官若杉和夫殿 ■、！８件の表示 特願昭　５９−２６３８号 ２、発明の名称 電磁クラッチの制御回路 ３、補正をする者 弱性との関係　特許出願人 住所　東京都渋谷区渋谷３丁目６番７号名称　（３３３
）ヂーゼル機器株式会社代表者　望　月　−成 ４、代理人 住所　〒１０５　東京都港区芝３丁目４番１６号友和ビ
ル２階 （０３）　４５Ｅｌ−２７４８ 昭和５９年３月２７日（発送日） ６、補正の対象 明細書の「図面の簡単な説明」の欄。 ７、補正の内容 （１）　明細書第１１頁第２０行目に「第２図（ｂ）」
とあるのを「第２図（Ｃ）」と補正する。 （以　−ト）FIG. 1 is a circuit diagram showing one embodiment of an electromagnetic clutch control circuit according to the present invention, and FIGS.
FIG. 3 is a waveform diagram of signals of each part of the circuit shown in the figure, and FIG. 3 is a waveform diagram showing another example of an excitation signal. DESCRIPTION OF SYMBOLS 1... Control circuit, 2... Electromagnetic clutch, 3... Electromagnet, 6... Switching transistor, 7... Start switch, 15... Monostable multivibrator, 19... Signal generation circuit , 21... Comparison signal generation circuit, 22... Voltage comparator, Pl... First pulse signal, Pl... Second nogle signal %S1... Triangular wave signal, S11... Comparison Signal, vl...voltage. Patent A-1 Applicant Diesel Kikai Co., Ltd. Agent Patent Attorney Masa Takano Procedural Amendment (Method) March 29, 1980 Patent Office & Kan Wakasugi Kazuo■,! 8 Displays Patent Application No. 59-2638 No. 2, Title of Invention Control Circuit for Electromagnetic Clutch 3, Relationship with Compensator's Weakness Patent Applicant Address: 3-6-7 Shibuya, Shibuya-ku, Tokyo Name (333)
) Diesel Kiki Co., Ltd. Representative: Mochizuki-4, Agent address: 2nd floor, Tomowa Building, 3-4-16 Shiba, Minato-ku, Tokyo 105 (03) 45El-2748 March 27, 1980 (Shipping date) 6. "Brief explanation of drawings" column of the specification subject to amendment. 7. Contents of amendment (1) “Figure 2 (b)” on page 11, line 20 of the specification
The text has been corrected to read "Figure 2 (C)." (below)

Claims (1)

【特許請求の範囲】[Claims] １、切離し状態において磁極板と電磁石との間に所定の
空隙長が生じる電磁クラッチの制御回路において、前記
電磁クラッチの接続を指令する指令信号を出力する手段
と、前記指令信号に応答して前記空隙長を零とするため
に必要な励磁エネルギーを前記電磁石に与えるための手
段と、前記励磁エネルギーの印加終了時において前記空
隙長を零に保持するに足るよう前記電磁石を励磁し以後
時間の経過と共に前記電磁石の励磁力を増大せしめるた
めの励磁信号を前記電磁石に供給する手段とを備えたこ
とを特徴とする電磁クラッチの制御回路０1. In a control circuit for an electromagnetic clutch in which a predetermined gap length is created between a magnetic pole plate and an electromagnet in a disconnected state, means for outputting a command signal for commanding connection of the electromagnetic clutch; means for applying excitation energy to the electromagnet necessary to make the gap length zero, and excitation of the electromagnet sufficient to maintain the gap length at zero at the end of the application of the excitation energy, and the elapse of time thereafter; and means for supplying an excitation signal to the electromagnet for increasing the excitation force of the electromagnet.
JP59002638A 1984-01-12 1984-01-12 Control circuit of electromagnetic clutch Pending JPS60146924A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP59002638A JPS60146924A (en) 1984-01-12 1984-01-12 Control circuit of electromagnetic clutch
US06/690,745 US4636912A (en) 1984-01-12 1985-01-11 Circuit for controlling solenoid clutch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59002638A JPS60146924A (en) 1984-01-12 1984-01-12 Control circuit of electromagnetic clutch

Publications (1)

Publication Number Publication Date
JPS60146924A true JPS60146924A (en) 1985-08-02

Family

ID=11534918

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59002638A Pending JPS60146924A (en) 1984-01-12 1984-01-12 Control circuit of electromagnetic clutch

Country Status (1)

Country Link
JP (1) JPS60146924A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5347824A (en) * 1992-04-09 1994-09-20 Nippondenso Co. Ltd. System for detecting the compression of liquid refrigerant in a compressor and controlling the compressor
US5617730A (en) * 1995-01-30 1997-04-08 Nippondenso Co., Ltd. Compressor control device for car air conditioner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5347824A (en) * 1992-04-09 1994-09-20 Nippondenso Co. Ltd. System for detecting the compression of liquid refrigerant in a compressor and controlling the compressor
US5617730A (en) * 1995-01-30 1997-04-08 Nippondenso Co., Ltd. Compressor control device for car air conditioner

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