JPH023136Y2 - - Google Patents
Info
- Publication number
- JPH023136Y2 JPH023136Y2 JP13096882U JP13096882U JPH023136Y2 JP H023136 Y2 JPH023136 Y2 JP H023136Y2 JP 13096882 U JP13096882 U JP 13096882U JP 13096882 U JP13096882 U JP 13096882U JP H023136 Y2 JPH023136 Y2 JP H023136Y2
- Authority
- JP
- Japan
- Prior art keywords
- torque
- control amplifier
- time constant
- brake
- hydraulic
- 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.)
- Expired
Links
- 239000010727 cylinder oil Substances 0.000 claims 2
- 239000003921 oil Substances 0.000 claims 1
- 239000003990 capacitor Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 230000004043 responsiveness Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
Description
【考案の詳細な説明】
本考案は自動車ブレーキ等のブレーキを室内試
験するためのブレーキダイナモメータに関する。[Detailed Description of the Invention] The present invention relates to a brake dynamometer for indoor testing of brakes such as automobile brakes.
一般に、ブレーキダイナモメータは、ブレーキ
ドラム（デイスク）側を電動機とフライホイール
を持つて駆動し、ブレーキシユー（パツド）を油
圧サーボアクチエータによるマスタシリンダの操
作で各種ブレーキテストをする。従来のブレーキ
制御系は第１図に示す構成にされる。トルク制御
増幅器１はトルク設定値TSとブレーキドラム２
の駆動系のトルク検出器３の検出値とを突合せて
積分演算する。油圧制御増幅器４はトルク制御増
幅器１の出力又は油圧設定値PSが油圧・トルク切
換スイツチ５で切換えて与えられ、この値とブレ
ーキシユー６の油圧検出器７の検出値とを突合せ
て一次遅れ積分演算をする。ストローク制御増幅
器８は油圧制御増幅器４の出力と油圧アクチエー
タ９のストローク検出器１０の検出値とを突合せ
てその偏差を増幅する。サーボ増幅器１１はスト
ローク制御増幅器８の出力とサーボ弁１２の操作
量とを突合せてサーボ弁１２を制御する。サーボ
弁１２はアクチエータ９への油圧切換制御をし、
アクチエータ９はマスタシリンダ１３を駆動す
る。 In general, a brake dynamometer drives the brake drum (disk) side with an electric motor and a flywheel, and performs various brake tests by operating the brake shoe (pad) on a master cylinder using a hydraulic servo actuator. A conventional brake control system has a configuration shown in FIG. Torque control amplifier 1 connects torque setpoint T S and brake drum 2
An integral calculation is performed by comparing the detected value of the torque detector 3 of the drive system. The hydraulic control amplifier 4 receives the output of the torque control amplifier 1 or the hydraulic set value P S by switching it with the hydraulic pressure/torque changeover switch 5, and compares this value with the detected value of the hydraulic pressure detector 7 of the brake shoe 6 to obtain the primary signal. Performs delayed integral calculation. The stroke control amplifier 8 compares the output of the hydraulic control amplifier 4 with the detection value of the stroke detector 10 of the hydraulic actuator 9 and amplifies the difference. The servo amplifier 11 controls the servo valve 12 by comparing the output of the stroke control amplifier 8 with the operation amount of the servo valve 12 . The servo valve 12 controls hydraulic pressure switching to the actuator 9,
Actuator 9 drives master cylinder 13 .
この構成において、切換スイツチ５をトルク制
御増幅器１側に切換えた状態では、トルク設定値
TSにブレーキ発生トルクを一致させるトルク制
御になるし、切換スイツチ５を油圧設定値PS側に
切換えるとブレーキ操作油圧すなわちマスタシリ
ンダ出力油圧を油圧設定値に一致させる油圧制御
になる。こうした油圧制御をマイナループとした
トルク制御では、油圧制御増幅器４にはその一次
遅れ要素としてのコンデンサＣ、抵抗Ｒの時定数
回路が油圧制御時の油圧ステツプ設定に対するオ
ーバシユートを抑えるように設定されていること
から、トルク制御時に油圧制御増幅器４での遅れ
が大きくなり、トルク制御応答性が悪くなつて制
御精度の向上が望めないし、トルク制御量波形が
悪くなる。 In this configuration, when the changeover switch 5 is switched to the torque control amplifier 1 side, the torque set value
Torque control makes the brake generated torque match T S , and when the changeover switch 5 is switched to the oil pressure setting value P S side, oil pressure control makes the brake operation oil pressure, that is, the master cylinder output oil pressure, match the oil pressure setting value. In such torque control using hydraulic control as a minor loop, the time constant circuit of the capacitor C and resistor R as the first-order delay elements in the hydraulic control amplifier 4 is set to suppress overshoot with respect to the hydraulic step setting during hydraulic control. Therefore, during torque control, the delay in the hydraulic control amplifier 4 becomes large, the torque control responsiveness deteriorates, no improvement in control accuracy can be expected, and the torque control amount waveform deteriorates.
本考案は上述までの事情に鑑みてなされたもの
で、油圧制御増幅器の時定数回路をトルク制御時
と油圧制御時とで夫々専用の回路に切換えること
により、トルク制御と油圧制御に適切な制御出力
を得ることができるようにしたブレーキダイナモ
メータを提供することを目的とする。 The present invention was developed in view of the above-mentioned circumstances, and by switching the time constant circuit of the hydraulic control amplifier to dedicated circuits for torque control and hydraulic pressure control, appropriate control can be achieved for torque control and hydraulic pressure control. The object of the present invention is to provide a brake dynamometer that can obtain output.
第２図は本考案の一実施例を示す要部回路図で
ある。油圧制御増幅器１４はトルク制御増幅器１
の出力又は油圧設定値PSが切換えられて入力さ
れ、この入力と油圧検出器７の検出値とが抵抗
R1，R2で突合わされて演算増幅器OPの反転入力
端子に接続され、演算増幅器OPの出力と反転入
力端子間には抵抗RP、コンデンサCPの直列回路
と抵抗RT、コンデンサCTの直列回路とが切換ス
イツチSWによつて切換え接続される。抵抗RPと
コンデンサCPの直列回路は油圧制御時の時定数
回路としてステツプ状油圧設定にオーバシユート
を抑える大きい時定数にされ、抵抗RTとコンデ
ンサCTの直列回路はトルク制御時の時定数回路
としてトルク制御増幅器１の積分出力に遅れの少
ない小さい時定数にされる。切換スイツチSWは
油圧制御とトルク制御に応じて夫々専用の時定数
回路側に切換えられ、これには例えば切換スイツ
チ５と連動にされる。 FIG. 2 is a main circuit diagram showing an embodiment of the present invention. Hydraulic control amplifier 14 is torque control amplifier 1
The output or oil pressure set value P S is switched and input, and this input and the detected value of the oil pressure detector 7 are connected to the resistance
R 1 and R 2 are matched and connected to the inverting input terminal of the operational amplifier OP, and between the output of the operational amplifier OP and the inverting input terminal there is a resistor R P , a series circuit of a capacitor C P and a resistor R T , and a capacitor C T and the series circuit are switched and connected by a changeover switch SW. The series circuit of resistor R P and capacitor C P is used as a time constant circuit during hydraulic control, and has a large time constant to suppress overshoot in step-type hydraulic settings, and the series circuit of resistor R T and capacitor C T is used as a time constant circuit during torque control. As a circuit, the integrated output of the torque control amplifier 1 has a small time constant with little delay. The changeover switch SW is switched to the dedicated time constant circuit side in accordance with the oil pressure control and the torque control, respectively, and is interlocked with the changeover switch 5, for example.
こうした時定数切換手段を設けることにより、
油圧制御時には第３図Ａに示すように油圧設定値
PSのステツプ変化にもオーバシユートなく油圧制
御量を得ることができるし、トルク制御時には第
３図Ｂに示すようにトルク設定値TSのステツプ
変化にトルク制御増幅器１の出力は積分出力にな
るが、この出力に対して油圧制御増幅器１４の積
分時定数が小さく少しの遅れを持つてオーバシユ
ートなく追従し、遅れ少なくトルク制御ができ
る。図中破線は従来回路による場合のトルク検出
値を示す。 By providing such a time constant switching means,
During hydraulic control, the hydraulic pressure setting value is set as shown in Figure 3A.
The hydraulic control amount can be obtained without overshoot even with step changes in P S , and during torque control, the output of torque control amplifier 1 becomes an integral output with step changes in torque set value T S , as shown in Figure 3B. However, the integral time constant of the hydraulic control amplifier 14 is small with respect to this output, and it follows this output with a small delay without overshoot, and torque control can be performed with little delay. The broken line in the figure shows the torque detection value when using the conventional circuit.
以上の通り、本考案によれば、トルク制御増幅
器が積分アンプにあつてその出力が積分波形にあ
つても油圧制御増幅器の時定数回路を小さいもの
に切換えるためトルク制御の応答性低下を無くし
しかも油圧制御でのオーバシユートを適切に制御
できる効果がある。 As described above, according to the present invention, even if the torque control amplifier is an integral amplifier and its output is an integral waveform, the time constant circuit of the hydraulic control amplifier is switched to a small one, thereby eliminating a decrease in responsiveness of torque control. This has the effect of appropriately controlling overshoot in hydraulic control.
第１図は従来のブレーキダイナモメータのブレ
ーキ制御系構成図、第２図は本考案の一実施例を
示す要部回路図、第３図は第２図の動作説明のた
めの要部波形図である。
１……トルク制御増幅器、２……ブレーキドラ
ム、３……トルク検出器、４……油圧制御増幅
器、５……切換スイツチ、６……ブレーキシユ
ー、７……油圧検出器、８……ストローク制御増
幅器、９……アクチエータ、１０……ストローク
検出器、１１……サーボ増幅器、１２……サーボ
弁、１３……マスタシリンダ、１４……油圧制御
増幅器。
Fig. 1 is a block diagram of the brake control system of a conventional brake dynamometer, Fig. 2 is a main circuit diagram showing an embodiment of the present invention, and Fig. 3 is a main part waveform diagram for explaining the operation of Fig. 2. It is. DESCRIPTION OF SYMBOLS 1... Torque control amplifier, 2... Brake drum, 3... Torque detector, 4... Hydraulic pressure control amplifier, 5... Changeover switch, 6... Brake shoe, 7... Oil pressure detector, 8... Stroke control amplifier, 9... Actuator, 10... Stroke detector, 11... Servo amplifier, 12... Servo valve, 13... Master cylinder, 14... Hydraulic control amplifier.
Claims (1)
ダを操作してブレーキ試験するのに、トルク設定
値とブレーキに発生するトルク検出値を突合せ入
力とする積分特性を持つトルク制御増幅器と、こ
のトルク制御増幅器の出力又はマスタシリンダ油
圧設定値を切換えて入力しこの入力とマスタシリ
ンダ油圧検出値とを突合せて一次遅れ特性を持つ
てサーボアクチエータのストローの制御出力を得
る油圧制御増幅器とを備えたブレーキダイナモメ
ータにおいて、上記油圧制御増幅器は油圧設定値
を入力とするときは時定数の大きい一次遅れ特性
になる時定数回路にしトルク制御増幅器の出力を
入力とするときは時定数の小さい一次遅れ特性に
なる時定数回路にする切換手段を備えたことを特
徴とするブレーキダイナモメータ。 In order to test the brake by operating the master cylinder with a hydraulic servo actuator, there is a torque control amplifier with an integral characteristic that matches the torque setting value and the detected torque value generated in the brake as input, and the output of this torque control amplifier. Or in a brake dynamometer equipped with a hydraulic control amplifier that switches and inputs the master cylinder oil pressure setting value and compares this input with the detected master cylinder oil pressure value to obtain a control output for the stroke of the servo actuator with first-order delay characteristics. , the above hydraulic control amplifier is a time constant circuit with a first-order lag characteristic with a large time constant when inputting the oil pressure setting value, and a time constant with first-order lag characteristic with a small time constant when inputting the output of the torque control amplifier. A brake dynamometer characterized in that it is equipped with a switching means for switching the circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13096882U JPS5934340U (en) | 1982-08-30 | 1982-08-30 | brake dynamometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13096882U JPS5934340U (en) | 1982-08-30 | 1982-08-30 | brake dynamometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5934340U JPS5934340U (en) | 1984-03-03 |
| JPH023136Y2 true JPH023136Y2 (en) | 1990-01-25 |
Family
ID=30296249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13096882U Granted JPS5934340U (en) | 1982-08-30 | 1982-08-30 | brake dynamometer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5934340U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60172526U (en) * | 1984-04-26 | 1985-11-15 | 中山 令子 | School bag with pencil case and other accessory cases |
-
1982
- 1982-08-30 JP JP13096882U patent/JPS5934340U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5934340U (en) | 1984-03-03 |
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