JPS60164024A - Control circuit for electromagnetic clutch - Google Patents

Control circuit for electromagnetic clutch

Info

Publication number
JPS60164024A
JPS60164024A JP59002639A JP263984A JPS60164024A JP S60164024 A JPS60164024 A JP S60164024A JP 59002639 A JP59002639 A JP 59002639A JP 263984 A JP263984 A JP 263984A JP S60164024 A JPS60164024 A JP S60164024A
Authority
JP
Japan
Prior art keywords
electromagnetic clutch
electromagnet
zero
time
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
JP59002639A
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 JP59002639A priority Critical patent/JPS60164024A/en
Priority to US06/690,745 priority patent/US4636912A/en
Publication of JPS60164024A publication Critical patent/JPS60164024A/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
    • F16D2500/10—System to be controlled
    • F16D2500/104—Clutch
    • F16D2500/10443—Clutch type
    • F16D2500/10475—Magnetic field, e.g. electro-rheological, magnetisable particles
    • 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
    • F16D2500/30—Signal inputs
    • F16D2500/302—Signal inputs from the actuator
    • F16D2500/3022—Current
    • 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
    • F16D2500/50239—Soft clutch engagement
    • 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
    • F16D2500/70428—Clutch slip change rate

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 mechanical shock at the time of clutch connection by once exciting an electromagnet in such a manner that amount of clearance becomes zero and gradually supplying exciting energy to an electromagnetic clutch. CONSTITUTION:With output voltage V0, a transistor 6 turns ON/OFF, exciting current is supplied to an electromagnet, and a start switch is closed. Then, the level of the first pulse signal P1 is raised during the period from time t1 to time t2, thereby making the amount of the clearance zero between the electromagnet 3 and a pole plate. After this, the state, in which the clearance is zero, is maintained by the second pulse signal P2. And the ratio of slip between the electromagnet 3 and the pole plate gradually increases from zero to reach 1 finally. With this contrivance, the electromagnetic clutch 2 can never be connected abruptly, thereby giving mechanical shock to neither the input side nor the output side of the electromagnetic clutch 2 at the time of clutch connection.

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ツクを防止するよ
うにした電磁クラッチの制御回路に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control circuit for an electromagnetic clutch, and more particularly, to a control circuit for an electromagnetic clutch that prevents a shock when the electromagnetic clutch is connected.

例えば車輛用空気調和装置の如き車輪用補機類において
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ョック
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、ブンブン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
駆動パルスのノ々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 wheel 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 shock, shortening the life of the device and giving a poor driving feeling. In order to solve the above-mentioned problems, the present applicant gradually widens the pulse width of the drive pulse applied when starting the electromagnetic clutch in the control circuit of the electromagnetic clutch for driving the buzzer, thereby gradually rotating the compressor. proposed a control circuit (
JP-A-58-191326).

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
械的ショッ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、周知の通シ、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／？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、磁極板が動き始め
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 an electromagnetic clutch with zero air gap, in the case of an electromagnetic clutch that has an air gap between the magnetic pole plate and the electromagnet in the disconnected state, this proposal Some devices have the disadvantage of not being able to eliminate mechanical shock during connection. That is, in an electromagnet, the attraction force increases in inverse proportion to the square of the air gap length, so the excitation drive of the electromagnetic clutch/? This is because even if the excitation current is gradually increased by gradually increasing the pulse width of the pulse, the electromagnetic clutch will be connected instantaneously once the current value reaches a value at which the magnetic pole 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ッチを、機械的シ
ョッ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。Therefore, an object of the present invention is to provide a control circuit for an electromagnetic clutch that can connect an electromagnetic clutch that creates a gap between the magnetic pole plate and the electromagnet in a disconnected state without mechanical shock. .

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ッチの制御回路に
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
一旦雫にするよう上記電磁石を励磁した後時間の経過と
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
を出力する手段とを備えた点に特徴を有する。The present invention has 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, and includes means for outputting a command signal for commanding the connection of the electromagnetic clutch; The present invention is characterized in that it includes means for outputting an excitation signal for increasing the excitation force of the electromagnet over time after exciting the electromagnet so as to temporarily reduce the air gap length in response.

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だめ
の回路であシ、電磁クラッチ２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 the electromagnetic clutch so that a gap of a predetermined length is created between the magnetic pole plate and the electromagnet in the disconnected state, and the electromagnet 3 of the electromagnetic clutch 2 is connected without impact. One end 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、一端が電源スィッチを介して直
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、オアグー）１０　。One end of the start switch 7 is connected to the positive electrode of the DC power supply 5 via a power switch, and the other end is grounded via a resistor 8.9. The voltage Vl at the other end of the start switch 7 is 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に入力サレテオ）、
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■１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・やルス信号
Ｐ１が出力される。11, input sales to the monostable multivibrator 15 consisting of resistors 12, 13 and capacitor 14),
When the start switch 7 is closed while the power switch 4 is closed and the level of the voltage (1) changes from a low level to a high level, the monostable multivibrator 15 is triggered to generate a first pulse with a predetermined pulse width. A pulse signal P1 is output.

第１パルス信号Ｐｌは、オアゲート１６の一方の入力端
子に印加されておシ、第１パルス信号Ｐ１の出力に応答
して出力される出力電圧■ｏが抵抗器１７．１８によ）
分圧されてスイッチングトランジスタ６のペースに印加
される。この結果、第１パルス信号Ｐ１　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
がオンとなシ、電磁石３に駆動電流が流れる。第１ノ９
ルスイｇ号Ｐ、のパルス幅は、電磁石３と磁極板（図示
せず）との間の所定の空隙長を一旦零とするのに必要な
励磁エネルギーを、電磁石−３に与えるよ・うに、直流
電源５の電圧を考慮して定められる。従って、スタート
スイッチ７が閉じられて第１パルス信号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なった時に第１パルス信号Ｐ１のレ
ベルが零となシ、第１パルス信号Ｐ、による電磁石３の
励磁動作が終了する。The first pulse signal Pl is applied to one input terminal of the OR gate 16, and the output voltage o output in response to the output of the first pulse signal P1 is generated by the resistor 17.18).
The voltage is divided and applied to the switching transistor 6. As a result, the switching transistor 6 is turned on for a period determined by the pulse width of the first pulse signal P1.
When is turned on, a driving current flows through the electromagnet 3. No. 1 No. 9
The pulse width of Rusui G-P is set so as to give the electromagnet-3 the excitation energy necessary to temporarily reduce the predetermined gap length between the electromagnet 3 and the magnetic pole plate (not shown) to zero. It is determined in consideration of 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 pulse signal P1 is output. When the level of P becomes zero, the excitation operation of the electromagnet 3 by the first pulse signal P 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
の間のすベシ状態が徐々に解消され、半クラツチ状態を
へて、完全接続状態となるよう電磁クラッチ２を駆動す
るため、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 tight state between the electromagnet 3 and the magnetic pole plate in the electromagnetic clutch 2 is gradually eliminated, and the half-clutch state is changed to In order to drive the electromagnetic clutch 2 so that it is fully connected, a second pulse signal P2 from the signal generating circuit 19 is applied to the other input terminal of the OR gate 16.

信号発生回路１９は、第２図（ａ）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Ｓ２
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Ｖ
ａ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Ｖ、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２４０両端の電圧、即ち比
較信号発生回路２１からの比較信号Ｓｚのレベルは、ス
タートスイッチ７がオンとされた時刻ｔ＝ｔ１から急速
に充電され、第１・ぐルス信号Ｐｌのレベルが一旦高し
ペルトナってカラ低レベルとなる時刻ｔ＝ｔ２において
ｖａ−Ｖｎ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 a triangular wave signal S1 as shown in FIG. 2(a), and a comparison signal generating circuit that outputs a comparison signal S2 whose level changes as shown in FIG. 2(b). 21, triangular wave signal S1 and comparison signal S2
and a voltage comparator 22 that performs level comparison with. The comparison signal generation circuit 21 includes a series circuit of resistors 8 and 9, a resistor 23 and a capacitor 24 provided between the other end of the start switch 7 and the ground. A diode 25 is connected between the connection point A and the connection point B between the resistor 23 and the capacitor 24 with the polarity shown. Therefore, when the start switch 7 is closed, the voltage V divided by the resistor 8°9 is applied to the connection point A.
a appears and the capacitor 24 is charged by this voltage V via the diode 25. The capacitor 24 is
Although it is also charged through the resistor 23, the resistance value of the resistor 8 is determined to be sufficiently smaller than the resistance value of the resistor 23, so the voltage across the capacitor 240, that is, the comparison signal generation circuit The level of the comparison signal Sz from 21 is rapidly charged from the time t=t1 when the start switch 7 is turned on, and the level of the first signal Pl increases once, and then reaches a very low level. At t=t2, va-Vn. 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り、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の充電電圧を急速に放電さ
せるための放電路を与えるためのものである。After time t2, charging of the capacitor 24 via the resistor 23 becomes 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. become. The diode designated here by the reference numeral 26 is for providing a discharge path for rapidly discharging the charging 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
ｌ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Ｓ１＋８２はこ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Ｓｉ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
き波形のパルス信号が第２パルス信号Ｐ２として出力さ
れる。第２パルス信号Ｐ２は、オアゲート１６を介して
スイッチングトランジスタ６のペースに印加され、第２
パルス’Ｍ　号Ｐ　２のレベルカ高しヘルとなっている
場合にスイッチングトランジスタ６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ノＪ
？ルス信号Ｐ２は、ｔｌ＜ｔ＜ｔ２の期間中はほぼ一定
デーーテイ比の・そルス信号であシ、ｔ≧ｔ２において
は時間の経過に従ってデユ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ノやルス
信号Ｐ２の７′ニーテイ比は、電磁石３が磁極板をリタ
ーンはね（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。第３図には、第１ノぐルス信
号Ｐ！と第２パルス信号Ｐ２との合成出力である出力電
圧ｖＯの波形が示されている。The comparison signal S2 obtained as described above is a triangular wave signal S
l is applied to one input terminal of the voltage comparator 22 through a resistor 27, and is applied to the input terminal of the voltage comparator 22 through a resistor 28, and both signals S1+82 are compared in level. 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 Si. The pulse signal is output as a second pulse signal P2. The second pulse signal P2 is applied to the pace of the switching transistor 6 via the OR gate 16, and the second
When the level of the pulse 'M' P2 is high and the switching transistor 6 is turned on, the electromagnet 3 is energized. As can be seen from the above explanation, the second J
? The pulse signal P2 is a pulse signal with a substantially constant data ratio during the period of tl<t<t2, and becomes a pulse signal with a duty ratio increasing as time passes when t≧t2. In other words, it remains at a high level continuously. At least the 7' knee-to-nity ratio of the second pulse signal P2 at 1=12 is such that the electromagnet 3 continues to attract the magnetic pole plate against the spring force of the return spring (not shown) and the air gap length becomes zero. It is set to be energized to the minimum necessary state to maintain it. FIG. 3 shows the first noggle signal P! The waveform of the output voltage vO, which is a composite output of the second pulse signal P2 and the second pulse signal P2, is shown.

このような構成によると、出力電圧ｖＯに従ってトラン
ジスタ６がオン、゛オフされることによシミ磁石３に励
磁電流が供給されることとなる。貝ｐち、スタートスイ
ッチ７を閉じて第１ノぐルス信号Ｐ１が時刻ｔ１からｔ
２ま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ノそルス信号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０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７５
＝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ｗツクを与えること７５５なく、
極めて円滑なりラッチ接続を行なうこと力；できる。According to such a configuration, the excitation current is supplied to the stain magnet 3 by turning the transistor 6 on and off according to the output voltage vO. After closing the start switch 7, the first nozzle signal P1 changes from time t1 to t.
2, the air gap length between the electromagnet 3 and the magnetic pole plate is set to exactly zero, and from then on, the second nosorse signal P2
The state of zero air gap is inherited, and the gap between the electromagnet 3 and the magnetic pole plate gradually increases from zero to one. Therefore, the electromagnetic clutch may be suddenly connected75.
= No mechanical shock is applied to either the input side or the output side of the electromagnetic clutch 2 at the time of connection755,
It is possible to make an extremely smooth latching connection.

本実施例では、第１ノ母ルス信号Ｐ１が印カロされてか
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ハイフレータ
１５の出力ノクルスのｉ４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電磁石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ノ臂ルス信号
Ｐ１による駆動力為ら第２ノリス信号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 pulse signal P1 is applied to when the gap length becomes zero is obtained in advance through experiments, and based on the experimental data, the time from when the first pulse signal P1 is applied to when the gap length becomes zero is determined. Although the configuration is such that the i4 pulse width of the output Noculus is set, the change that occurs in the current waveform flowing through the electromagnet 3 when the air gap length becomes zero is detected, and this changes the driving force by the first arm pulse signal P1. Therefore, a configuration may be adopted in which driving is switched to the second Norris signal P2.

また、上記実施例では、第１ノぐルス信号ｐｉ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ｐクラッ
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４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ｔａが
ら空隙長〃二零になる時刻ｔｂまでの聞覚磁石３の励磁
電流カニ所定のレベルＬ１を保ち、時刻ｔ２において一
旦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ｔＩ
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ッチ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多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。Further, in the above embodiment, after the air gap length becomes zero due to the first nozzle signal pi, the duty ratio of the 27th nozzle signal P2 is increased over time, thereby achieving shockless connection of the p clutch. However, the present invention is not limited to this embodiment. For example, as shown in FIG. The excitation current of the auditory magnet 3 is maintained at a predetermined level L1 until then, and at time t2, it temporarily decreases to the level L2 required to maintain the air gap length at zero, and then, as time passes, the excitation current level tI
It is also possible to use a circuit that outputs an analog excitation current, such as a large one, to connect the stain magnetic latch 2 without impact. The analog excitation current may be generated by a single signal generation circuit, or by using a plurality of signal generation circuits that generate only part of the excitation current, the output from these signal generation circuits may be generated. It is also possible to synthesize the excitation current signal in a required analog form.

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０乃至第２図（ｂ）及び第３図
は第１図に示した回路の各部の信号の波形図、第４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・・・単安定マルチパイプレーク
、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ノやルス信
号、Ｐ２・・・第２パルス信号％Ｓｌ・・・三角波信号
、Ｓ２・・・比較信号、ｖｌ・・・電圧。 特許出願人　ヂーゼル機器株式会社 代理人　弁理士　高　野　昌　俊 第２図 ｉ　！　ｔ ｔ、　ｔ２ 第３図 手続補正口（自発） 昭和５９年９月４日 特許庁長官　志　賀　学　殿 ■、事件の表示 特願昭　５９−２６３９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 事件との関係　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 明細書の「図面の簡単な説明」の欄。 ６、補正の内容 明細書第１１頁第１７行目に「第２図（ｂ）」とあるの
を「第２図（Ｃ）」と補正する。 （以上）FIG. 1 is a circuit diagram showing an embodiment of the electromagnetic clutch control circuit according to the present invention, and FIG. 2 0 to 2(b) and FIG. 4 are waveform diagrams showing other examples of excitation signals. DESCRIPTION OF SYMBOLS 1... Control circuit, 2... Electromagnetic clutch, 3... Electromagnet, 6... Switching transistor, 7... Start switch, 15... Monostable multipipe leak, 19... Signal generation Circuit, 21... Comparison signal generation circuit, 22... Voltage comparator, Pl... First pulse signal, P2... Second pulse signal %Sl... Triangular wave signal, S2... Comparison signal, vl...voltage. Patent applicant: Diesel Kiki Co., Ltd. Agent: Patent attorney: Masatoshi Takano Diagram 2 i! t t, t2 Figure 3 Procedural amendment (spontaneous) September 4, 1980 Mr. Manabu Shiga, Commissioner of the Japan Patent Office■, Indication of the case Patent application No. 59-2639 2, Title of invention Control circuit for electromagnetic clutch 3 , Relationship with the case of the person making the amendment Patent applicant address 3-6-7 Shibuya, Shibuya-ku, Tokyo Name (333
) Diesel Kiki Co., Ltd. Representative: Mochizuki-Sei 4, Agent address: 2nd floor, Tomowa Building, 3-4-16 Shiba, Minato-ku, Tokyo 105 ``Brief explanation of drawings'' section of the statement. 6. Contents of the amendment On page 11, line 17 of the specification, the phrase "Figure 2 (b)" is amended to read "Figure 2 (C)."(that's all)

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一旦零にする
よう前記電磁石を励磁した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だめの励磁信号を出力する手
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
。1. 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; A control circuit for an electromagnetic clutch, comprising means for outputting an excitation signal for increasing the excitation force of the electromagnet as time passes after the electromagnet is excited so as to once make the gap length zero.
JP59002639A 1984-01-12 1984-01-12 Control circuit for electromagnetic clutch Pending JPS60164024A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP59002639A JPS60164024A (en) 1984-01-12 1984-01-12 Control circuit for 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
JP59002639A JPS60164024A (en) 1984-01-12 1984-01-12 Control circuit for electromagnetic clutch

Publications (1)

Publication Number Publication Date
JPS60164024A true JPS60164024A (en) 1985-08-27

Family

ID=11534946

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59002639A Pending JPS60164024A (en) 1984-01-12 1984-01-12 Control circuit for electromagnetic clutch

Country Status (1)

Country Link
JP (1) JPS60164024A (en)

Cited By (1)

* 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

Cited By (1)

* 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

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