JPS5935579A - Speed controller for dc motor - Google Patents
Speed controller for dc motorInfo
- Publication number
- JPS5935579A JPS5935579A JP57145509A JP14550982A JPS5935579A JP S5935579 A JPS5935579 A JP S5935579A JP 57145509 A JP57145509 A JP 57145509A JP 14550982 A JP14550982 A JP 14550982A JP S5935579 A JPS5935579 A JP S5935579A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- resistor
- bridge circuit
- temperature
- circuit
- 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
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
- H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
- H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
- H02P7/2855—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
- H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
- H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
- H02P7/29—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation
- H02P7/291—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation with on-off control between two set points, e.g. controlling by hysteresis
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
Description
【発明の詳細な説明】 この発明は、直流電動機の速度制御装置に関する。[Detailed description of the invention] The present invention relates to a speed control device for a DC motor.
一般に、直流電動機の速度制御を行なう際、その直流電
動機の回転速度を検出する方法として、第１図に示すよ
うな方法が、従来から用いられている。すなわち、第１
図において、Ｊは制御すべき直流電動機であり、この直
流を動機と抵抗２、抵抗３、抵抗４とで、それぞれを各
辺とするブリッジ回路を構成している。直流電動機の等
側内部抵抗をＲａ、抵抗２．３．４の抵抗値をＲ１、鳥
、Ｒ３とし、ブリッジ回路の給電端子Ａ、Ｂ間の電圧を
ＶＯ１直流電動機１の逆起電圧をＥＭとすると、ブリッ
ジ回路の検出端Ｃ，Ｄ間の電圧Ｖｎは、と表わされる。Generally, when controlling the speed of a DC motor, a method as shown in FIG. 1 has been conventionally used as a method for detecting the rotational speed of the DC motor. That is, the first
In the figure, J is a DC motor to be controlled, and this DC motor, resistor 2, resistor 3, and resistor 4 constitute a bridge circuit with each side as a side. The equal-side internal resistance of the DC motor is Ra, the resistance value of resistor 2.3.4 is R1, R3, the voltage between the power supply terminals A and B of the bridge circuit is VO1, and the back electromotive force of DC motor 1 is EM. Then, the voltage Vn between the detection terminals C and D of the bridge circuit is expressed as follows.
ここで、ブリッジの平衡条件１３−□１ヨし２＝Ｒ３Ｒ
ａ・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・（２ンを満たすように抵抗値
几１、ｆＬ２、几、を選ぶと、（１）式は、
Ｖｎ ＝ −□ Ｅｕ ＝−ＡＳ−−−Ｋｖ 、Ｎ −
−−−−−−−−−−−＝−−−−−１３）Ｒ１１−１
−Ｒａ Ｒ□十Ｒａ
（但し、Ｋｖは直流電動機の逆起電圧定数、Ｎは直流電
動機の回転速度である。）
となり、検出端電圧Ｖｎは回転速度Ｎのみの関数となり
、この電圧’Ｖｎを測定することにより回転速度を検出
することができる。しため５って、逆にこの検出端電圧
Ｖｎを一定に保たせることにより、回転速度Ｎを一定に
する速度制御を行うことができる。Here, the bridge equilibrium condition 13-□1yoshi2=R3R
a・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・(Choosing the resistance values 几1, fL2, 几, so as to satisfy 2, the formula (1) becomes Vn = −□ Eu = −AS−−−Kv , N −
−−−−−−−−−−−=−−−−−13) R11-1
-Ra R□0Ra (However, Kv is the back electromotive force constant of the DC motor, and N is the rotational speed of the DC motor.) The detection terminal voltage Vn is a function only of the rotational speed N, and this voltage 'Vn is The rotation speed can be detected by measurement. Therefore, conversely, by keeping this detection terminal voltage Vn constant, it is possible to perform speed control to keep the rotational speed N constant.
ところが、抵抗２．３．４として、一般的な抵抗器（例
えば炭素皮膜抵抗器）を用いた場合、直流電動機】の等
側内部抵抗Ｒａは、一般的に他の３つの抵抗に比べて、
大きな正の温度係数を有するので、温度変化に伴い、（
２）式が満たされない状態が生ずる。したがって、（１
）式の第】項が無視できなくなり、第２項の係数几、／
（曳＋几ａ）も温度に依存し、検出端電圧Ｖｎは、
Ｖｎ ＝ ｆ （Ｔ、、 Ｔｏｒｑｕｅ ） ＋ ｇ
（Ｔ）ΦＥＭ ・・・・・・・・・・・・・・・・・
・・・・・・・（４）で示すように、回転速度Ｎのみで
な（、温度（η及び負荷（’ｌ’ｏｒｑｕｅ ）の関数
として表わされる。However, when a general resistor (for example, a carbon film resistor) is used as the resistor 2.3.4, the equal internal resistance Ra of the DC motor is generally smaller than the other three resistances.
It has a large positive temperature coefficient, so as the temperature changes, (
2) A situation occurs where the formula is not satisfied. Therefore, (1
) in the equation can no longer be ignored, and the coefficient of the second term, /
(Torque + Torque) also depends on the temperature, and the detection terminal voltage Vn is Vn = f (T,, Torque) + g
(T)ΦEM・・・・・・・・・・・・・・・・・・
As shown in (4), it is expressed not only by the rotational speed N, but also as a function of the temperature (η) and the load ('l'orque).
したがって、同一温度係数を有する３つの抵抗と、直流
電動機によりブリッジ回路を構成し、検出端電圧Ｖｎを
一定に保つような速度制御方式を採った場合には、回転
速度は温度及び負荷の変動により、第２図に示すような
変化を生じてしまい、適確な速度制御ができない。Therefore, if a bridge circuit is constructed using three resistors with the same temperature coefficient and a DC motor, and a speed control method is adopted in which the detection end voltage Vn is kept constant, the rotation speed will change due to changes in temperature and load. , changes as shown in FIG. 2 occur, making it impossible to perform accurate speed control.
また、このような温度依存性を減少させる手段として、
ブリッジを構成する抵抗３に、直流電動機の等側内部抵
抗Ｒａと同じ温度係数をもつ特殊抵抗体を使用する方法
が、従来用いられているが、特殊抵抗体を使用するため
に高価なものとなってしまい、一般的でない欠点がある
。In addition, as a means to reduce such temperature dependence,
Conventionally, a method has been used in which a special resistor having the same temperature coefficient as the equal-side internal resistance Ra of the DC motor is used as the resistor 3 constituting the bridge, but the use of a special resistor is expensive. It has some disadvantages that are not common.
本願発明は、従来の直流電動機の速度制御装置のかかる
欠点を解消すべくなされたもので、ブリッジ回路の電動
機と直接接続されない一辺をサーミスタを含む抵抗回路
で構成し、特殊抵抗体を用いずに温度依存性を少（した
直流電動機の速度制御装置を６提供することを目的とす
るものである。The present invention was made in order to eliminate such drawbacks of conventional speed control devices for DC motors.One side of the bridge circuit that is not directly connected to the motor is configured with a resistance circuit including a thermistor, thereby eliminating the need for using a special resistor. It is an object of the present invention to provide a speed control device for a DC motor with reduced temperature dependence.
次に実施例に基づき本願発明の詳細な説明する。Next, the present invention will be explained in detail based on examples.
第３図は、本願発明に係る直流電動機の速度制御装置の
一実施例の回路構成図である。図において、１は制御さ
れる直流電動機で、この電動機ｌと、抵抗２と、抵抗３
とをそれぞれブリッジ回路の一辺とし、抵抗４と抵抗８
を直列に、この抵抗８に負の温度係数をもつサーミスタ
９を並列接続したものを、直流電動機１と対向するブリ
ッジ回路の残りの一辺とする如くブリッジ回路を構成し
Ｃいる。５は直流電動機］と抵抗２との接続点Ｃと、抵
抗３と抵抗４との接続点りの電圧を入力し、接続点Ｃ，
Ｄ間の電圧の変化分を検出、増幅する速度検出回路であ
る。６は速度検出回路５の検出出力をうけて、前記直流
電動機を含むブリッジ回路への給電を制御する給電回路
である。７はブリッジ回路へ電力を供給する電源である
。FIG. 3 is a circuit configuration diagram of an embodiment of a speed control device for a DC motor according to the present invention. In the figure, 1 is a controlled DC motor, and this motor 1, a resistor 2, and a resistor 3
and are each one side of the bridge circuit, and resistor 4 and resistor 8
A bridge circuit is constructed such that the resistor 8 is connected in series with a thermistor 9 having a negative temperature coefficient in parallel, and the remaining side of the bridge circuit facing the DC motor 1 is connected. 5 is a DC motor] and the voltage at the connection point C between the resistor 2 and the connection point between the resistor 3 and the resistor 4 is input, and the voltage at the connection point C,
This is a speed detection circuit that detects and amplifies the change in voltage between D and D. A power supply circuit 6 receives the detection output of the speed detection circuit 5 and controls power supply to the bridge circuit including the DC motor. 7 is a power supply that supplies power to the bridge circuit.
このように構成されている直流電動機の速度制御装置に
おいて、抵抗４と抵抗８とサーミスタ９からなるブリッ
ジ回路の一辺のインピータンスをＺ３、その温度係数を
αとし、直流電動機］の等側内部抵抗をＲａ、その温度
係数をβとし、また抵抗２．３．４の抵抗値をＲ１、Ｒ
２、Ｒ３、その温度係数をｌとすると、ブリッジ回路の
検出端Ｃ，Ｄ間の電圧Ｖｎは、
となる。いま、温度′Ｐ１における直流電動機】の等側
内部抵抗、抵抗２．３の抵抗値、及び抵抗４．８とサー
ミスタ９からなる一辺のインピーダンスを、それぞれＲ
ａｘ 、 Ｒ１１１几２１１Ｚ３１とし、温度Ｔ２のと
き、それぞれＲａ２、几１２、Ｒ２２、ｚ３２とすると
、Ｒ１１２−＝ （Ｔ２−Ｔｘ）ｊ”ｄも１１ ＋Ｒ１
１＝ （１＋ ΔＴ＠ｒ）Ｒｕ−（６）■も” ＝ （
Ｔ２ Ｔ １）ｅｙ＊几２１ ＋ Ｒｚｘ ＝
（］ →−ΔＴ＠ｒ）−Ｒｚｔ・ （７）Ｒａ２＝
（Ｔ２−Ｔｘ）ｅβ＊Ｒａｌ十几ａｔ＝（］−）−Δ
Ｔ−７）−几ａｓ−（８）Ｚ３２ ＝ （Ｔ２−ＴＩ
）＋１ ａ拳”ｌｓｘ −１−Ｚ３１ −＝ （１
＋ΔＴ−（１）−Ｚ３１ ＝−（９）（但し、ΔＴ＝
Ｔｚ−Ｔ１）
なる関係がある。In the speed control device for a DC motor configured as described above, the impedance of one side of the bridge circuit consisting of resistor 4, resistor 8, and thermistor 9 is Z3, its temperature coefficient is α, and the equal-side internal resistance of the DC motor is is Ra, its temperature coefficient is β, and the resistance value of resistor 2.3.4 is R1, R
2, R3, and its temperature coefficient is l, the voltage Vn between the detection terminals C and D of the bridge circuit is as follows. Now, let R be the equal-side internal resistance of the DC motor ] at temperature 'P1, the resistance value of resistor 2.3, and the impedance of one side consisting of resistor 4.8 and thermistor 9.
ax, R111 211 Z31, and when the temperature is T2, Ra2, 12, R22, and z32, respectively, then R112-= (T2-Tx)j"d is also 11 + R1
1= (1+ ΔT@r)Ru−(6)■also” = (
T2 T 1)ey*几21 + Rzx =
(] →−ΔT@r)−Rzt・ (7) Ra2=
(T2-Tx)eβ*Raljuat=(]-)-Δ
T-7)-as-(8)Z32 = (T2-TI
)+1 a fist"lsx -1-Z31 -= (1
+ΔT-(1)-Z31 =-(9) (However, ΔT=
Tz-T1) There is a relationship.
一方、ブリッジ回路の平衡条件は（５）式から、几ａｔ
１ｌＺ３１ ＝ Ｒ１１１・Ｒｚｔ （温度Ｔ１の
とき）・・・・・・・・・・・・・・α値Ｒａ２・Ｚ３
２＝几１２・Ｒ２２（温度１１２のとき）・・・・・・
・・・・・・・・（［υとなるが、抵抗２．３の温度係
数ｒは、一般に直流電動機の等側内部抵抗の温度係数β
に比べて非常に小さいので、これを無視すると、几１１
＝ Ｒ１１２、Ｒｚｔ ＝ Ｈ，２２となるノテ、０
１、（１１１式より、ＲａｘｌｌＺ３１ ＝Ｒａ２・Ｚ
３２ ・・・・・・・由・・・・・・・・・・・・・
・・・・・・・・・・・・川・・・・・・・・・・・・
・・α２が得られ、この式を満足するならば、温度に無
関係に常に（５）式の第１項が零となり、検出端電圧Ｖ
ｎに基づい”Ｃ回転速度を制御した場合には、回転速度
の温度依存性が減少され、回転速度の負荷依存性がなく
なることになる。On the other hand, from equation (5), the equilibrium condition of the bridge circuit is
1lZ31 = R111・Rzt (at temperature T1)・α value Ra2・Z3
2 = 几12・R22 (at temperature 112)...
・・・・・・・・・([υ, but the temperature coefficient r of resistance 2.3 is generally the temperature coefficient β of the equal-side internal resistance of a DC motor.
Since it is very small compared to
= R112, Rzt = H, 22 notes, 0
1, (from formula 111, RaxllZ31 = Ra2・Z
32 ・・・・・・・Yu・・・・・・・・・・・・
············river············
...If α2 is obtained and this formula is satisfied, the first term of formula (5) will always be zero regardless of temperature, and the detection terminal voltage V
When the "C rotation speed is controlled based on n, the temperature dependence of the rotation speed is reduced and the load dependence of the rotation speed is eliminated.
０２式を満足させるには、（８）、（９）、０２１式よ
り、几ａｓ ＊Ｚａ１＝ （（１＋ ΔＴす）ψ几ａｘ
）−（（］＋ΔＴ−ａ）−Ｚｓｌ）が得られ、これより
αを導出すると、
１
α−１＋ａＴ−βとなり、ムＴ−，ＩＫＩであるから、
α鴇−ノ ・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・ ・・
・０となり、この条件を満たせばよいことになる。すな
わち、第３図に示したように、抵抗４、抵抗８、サーミ
スタ９を用いて、直流電動機に直接接続されずこれと対
向する一辺を構成し、そのインピーダンスが、直流電動
機の等側内部抵抗Ｒａと逆の温度係数（絶対値の等しい
負の温度係数）をもつようにすることによって、検出端
電圧Ｖｎを検出して回転速度を制御する場合、温度依存
性を減少させ、回転速度の負荷依存性をなくすことがで
きる。この場合、（５）式の第１項は無視されるが、第
２項は温度依存性をもっているので、抵抗２．３の温度
係数を零とし、その抵抗値をＲｔ、Ｒｚとすると、（５
）式は、
１
”ｎ＝ Ｒ１−１−Ｒａ□ＸＥＭ（温度Ｔ１のとき）・
・・・・・・・・・・・・・＋１４）となり、■ｎを一
定にすると、温度の上昇と共に回転速度は上昇し、その
特性は第４図に示すようになる。To satisfy formula 02, from formulas (8), (9), and 021, 几as *Za1= ((1+ ΔTsu)ψ几ax
)-((]+ΔT-a)-Zsl) is obtained, and when α is derived from this, it becomes 1 α-1+aT-β, and since MuT-, IKI,
α Tono ・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・
・It becomes 0, and it is sufficient if this condition is satisfied. That is, as shown in Fig. 3, a resistor 4, a resistor 8, and a thermistor 9 are used to configure one side that is not directly connected to the DC motor but faces it, and its impedance is equal to the equal-side internal resistance of the DC motor. By having a temperature coefficient opposite to Ra (a negative temperature coefficient with the same absolute value), when detecting the detection end voltage Vn and controlling the rotation speed, the temperature dependence can be reduced and the load of the rotation speed can be reduced. Dependency can be eliminated. In this case, the first term of equation (5) is ignored, but the second term has temperature dependence, so if the temperature coefficient of resistor 2.3 is zero and the resistance values are Rt and Rz, ( 5
) formula is 1”n=R1-1-Ra□XEM (at temperature T1)・
. . . +14), and if n is constant, the rotational speed increases as the temperature increases, and its characteristics are as shown in FIG.
したがって、抵抗４、抵抗８、サーミスタ９を用いてブ
リッジ回路の一辺を構成し、そのインピーダンスに適当
な温度係数をもたせ、直流電動機の等側内部抵抗几ａと
全く等しい逆の温度係数ではなく、多少ずらして検出端
電圧Ｖｎに多少の負荷依存性をもたせるように、定数を
決定することにより、第５図に示すように、第２図と第
４図に示す特性の中間の特性をもたせることができる。Therefore, one side of the bridge circuit is constructed using resistor 4, resistor 8, and thermistor 9, and its impedance has an appropriate temperature coefficient, rather than the opposite temperature coefficient that is exactly equal to the equal-side internal resistance 几a of the DC motor. By determining the constant so that the detection end voltage Vn has some load dependence by slightly shifting it, as shown in FIG. I can do it.
なお、実際の設計に際しては、直流電動様に接続される
負荷の定格値に、第５図における最も温度依存性の少な
い点Ｅがくるように、身ンピーダンスＺ３の温度係数を
選定することにより、温度変化に伴う回転速度の変動を
良好に改善することができる。In addition, in actual design, by selecting the temperature coefficient of the body impedance Z3 so that the point E with the least temperature dependence in Fig. 5 is at the rated value of the load connected to the DC motor, Fluctuations in rotational speed due to temperature changes can be favorably improved.
以上実施例に基づき詳細に説明したように、本願発明は
、直流電動機と抵抗とからなるブリッジ回路の一辺を、
直列に接続された２つの抵抗と、一方の抵抗に並列に接
続されたサーミスタとで構成したので、特殊な部材を用
いずに簡単な構成で、直流電動機の速度制御装置の温度
依存性を改善することができる。As described above in detail based on the embodiments, the present invention has one side of a bridge circuit consisting of a DC motor and a resistor.
Since it is composed of two resistors connected in series and a thermistor connected in parallel to one resistor, the temperature dependence of the speed control device of a DC motor can be improved with a simple configuration without using special parts. can do.
第１図は、従来の直流電動機の速度制御装置の回路構成
図、第２図は、第１図に示した装置の負荷及び温度と回
転速度との関係を示す特性図、第３図は、本願発明に係
る直流電動機の速度制御装置の一実施例の回路構成図、
第４図及び第５図は、第３図に示した本願発明の実施例
の温度及び負荷特性を説明する特性図である。
図において、１は直流電動機、２．３．４は抵抗、５は
速度検知回路、６は給電回路、７は電源、８は抵抗、９
はサーミスタを示す。
特許出願人 オリンパス光学工業株式会社−３τ
第１図
第３図
第２図
市４図
宛５図Fig. 1 is a circuit configuration diagram of a conventional speed control device for a DC motor, Fig. 2 is a characteristic diagram showing the relationship between the load and temperature of the device shown in Fig. 1, and the rotational speed, and Fig. 3 is a A circuit configuration diagram of an embodiment of a speed control device for a DC motor according to the present invention,
4 and 5 are characteristic diagrams illustrating the temperature and load characteristics of the embodiment of the present invention shown in FIG. 3. In the figure, 1 is a DC motor, 2.3.4 is a resistor, 5 is a speed detection circuit, 6 is a power supply circuit, 7 is a power supply, 8 is a resistor, 9
indicates a thermistor. Patent applicant: Olympus Optical Industry Co., Ltd. - 3τ Figure 1 Figure 3 Figure 2 Address to City Figure 4 Figure 5
Claims (1)
え、該ブリッジ回路の検出端の電圧を検出して速度を制
御する直流電動機の速度制御装置において、前記ブリッ
ジ回路の直流電動機と直接接続されない一辺を、サーミ
スタを含む抵抗回路で構成したことを特徴とする直流電
動機の速度制御装置。In a speed control device for a DC motor, which includes a bridge circuit formed by a controlled DC motor and a resistor, and controls the speed by detecting a voltage at a detection end of the bridge circuit, one side of the bridge circuit that is not directly connected to the DC motor. A speed control device for a DC motor, characterized in that the speed control device is constructed of a resistance circuit including a thermistor.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57145509A JPS5935579A (en) | 1982-08-24 | 1982-08-24 | Speed controller for dc motor |
| DE19833328250 DE3328250A1 (en) | 1982-08-24 | 1983-08-04 | Speed-regulating device for a DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57145509A JPS5935579A (en) | 1982-08-24 | 1982-08-24 | Speed controller for dc motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5935579A true JPS5935579A (en) | 1984-02-27 |
Family
ID=15386890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57145509A Pending JPS5935579A (en) | 1982-08-24 | 1982-08-24 | Speed controller for dc motor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS5935579A (en) |
| DE (1) | DE3328250A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2642583B1 (en) * | 1989-01-27 | 1991-04-12 | Thomson Csf | METHOD AND CIRCUIT FOR CONTROLLING THE SPEED OF A DIRECT CURRENT MOTOR AT THE MOTOR CONTROL VOLTAGE |
| DE19524913A1 (en) * | 1995-07-08 | 1997-01-09 | Bosch Gmbh Robert | Method and circuit arrangement for determining the speed of a DC motor |
| DE19918907B4 (en) * | 1999-04-26 | 2008-12-24 | Valeo Klimasysteme Gmbh | switching device |
| DE10344301A1 (en) * | 2003-09-23 | 2005-04-28 | Karl Preis | Control circuit and method for controlling an inductive electrical load |
| DE102006039112A1 (en) * | 2006-08-21 | 2008-02-28 | Robert Bosch Gmbh | Method for determining the speed of a starter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE970196C (en) * | 1950-08-31 | 1958-08-28 | Siemens Ag | Circuit arrangement for reducing temperature-related fluctuations in an electrical quantity |
-
1982
- 1982-08-24 JP JP57145509A patent/JPS5935579A/en active Pending
-
1983
- 1983-08-04 DE DE19833328250 patent/DE3328250A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE3328250A1 (en) | 1984-03-01 |
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