CN204964181U - High accuracy derailleur test system based on two -stage low pass filter circuit - Google Patents
High accuracy derailleur test system based on two -stage low pass filter circuit Download PDFInfo
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- CN204964181U CN204964181U CN201520654408.0U CN201520654408U CN204964181U CN 204964181 U CN204964181 U CN 204964181U CN 201520654408 U CN201520654408 U CN 201520654408U CN 204964181 U CN204964181 U CN 204964181U
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Abstract
The utility model discloses a high accuracy derailleur test system based on two -stage low pass filter circuit, its characterized in that: isolation transformer (2) that are connected with power inlet wire cabinet (1) by power inlet wire cabinet (1), rectifier unit (3) that are connected with isolation transformer (2), two -stage low -pass filtering unit (14) that are connected with rectifier unit (3), drive variable frequency power supply (4) and feed variable frequency power supply (5) that are connected with two -stage low -pass filtering unit (14), traction motor (6) that are connected with drive variable frequency power supply (4), survey derailleur (9) through what first shaft coupling (7) was connected with traction motor (6), survey the load motor constitutions such as (11) that derailleur (9) are connected through second shaft coupling (10) and quilt. The utility model discloses more thoroughly is handled in filtering to power grid alternating current, and its operating current is more smooth -going, thereby makes the utility model discloses move more smoothly.
Description
Technical field
The utility model relates to a kind of variator test macro, specifically refers to the high precision variator test macro based on two-stage low-pass filter circuit.
Background technology
Variator to fix or stepping changes the cogwheel gearing of output shaft and input shaft ratio of gear, can change machine run speed or the tractive force such as lathe, automobile and tractor, being widely used of industrial every field.Have the gear that many diameter are different in the composition of variator, and as a crucial gearing, especially its mechanical property just can be dispatched from the factory after having to pass through severe test.
Variator test macro is exactly carry out for the mechanical property of variator the test battery equipment that detects, conjugation between the gear of variator and the deformation extent under long-term work are main investigation points, main I/O torque value and the gearing factor gathering and detect variator.
Now, the mode that traditional transmission test equipment generally adopts hydraulic dynamometer or genset to combine with energy consumption resistance, wherein torque measurement adopts phase type torque sensor, and its shortcoming is that long-play will cause a large amount of energy expenditure, operating cost very high; And the phase type torque sensor measuring accuracy that torque measurement adopts is inadequate, and often need compared with zero, maintenance cost is high.
Utility model content
The purpose of this utility model is to overcome traditional defect that variator test macro energy consumption is high, measuring accuracy is inadequate, provides a kind of high precision variator test macro based on two-stage low-pass filter circuit.
The purpose of this utility model is achieved through the following technical solutions: based on the high precision variator test macro of two-stage low-pass filter circuit, by driving variable-frequency power sources, feed variable-frequency power sources, the isolating transformer that electric power incoming line cabinet is connected with electric power incoming line cabinet, the rectification unit be connected with isolating transformer, with the dragging motor driving variable-frequency power sources to be connected, the tested variator be connected with dragging motor by the first shaft coupling, by the loading motor that the second shaft coupling is connected with tested variator, be arranged on the torque sensor between dragging motor and tested variator, the torque signal processing unit be connected with torque sensor, the monitor supervision platform be connected with torque signal processing unit, and the two-stage low-pass filter unit composition be serially connected between the output terminal of rectification unit and the input end driving variable-frequency power sources and feed variable-frequency power sources.
Further, described two-stage low-pass filter unit is by amplifier P3, amplifier P4, triode VT4, one end is connected with the positive pole of amplifier P3, the other end then forms the resistance R9 of the input end of this two-stage low-pass filter unit after resistance R8, positive pole is connected with the tie point of resistance R9 with resistance R8, the electric capacity C2 that negative pole is then connected with the output terminal of amplifier P3, be serially connected in the resistance R10 between the positive pole of amplifier P4 and output terminal, be serially connected in the electric capacity C3 between the negative pole of amplifier P3 and output terminal and resistance R12, and one end is connected with the negative pole of amplifier P3, while the other end is then connected with the base stage of triode VT4, the resistance R11 of ground connection forms, the positive pole of described amplifier P4 is connected with the output terminal of amplifier P3, its negative pole is then connected with the base stage of triode VT4, its output terminal is connected with the collector of triode VT4, the grounded emitter of described triode VT4, its collector then form the output terminal of this two-stage low-pass filter unit.
Described monitor supervision platform by tachometer torquemeter, the computing machine be connected with tachometer torquemeter, and the printer be connected with computing machine forms; Described tachometer torquemeter is then connected with torque signal processing unit.
Described torque signal processing unit is by amplifier P1, amplifier P2, triode VT1, triode VT2, triode VT3, N pole is connected with the emitter of triode VT1, the voltage stabilizing diode D1 of P pole ground connection, P pole is connected with the emitter of triode VT1 after resistance R1, N pole is the diode D2 of ground connection after voltage stabilizing diode D3 then, be serially connected in the resistance R2 between the N pole of diode D2 and the base stage of triode VT2, be serially connected in the resistance R3 between the N pole of diode D2 and the collector of triode VT2, one end is connected with the collector of triode VT1, the resistance R4 of ground connection while the other end is then connected with the negative pole of amplifier P1, be serially connected in the resistance R5 between the base stage of triode VT2 and the collector of triode VT3, be serially connected in the electric capacity C1 between the base stage of triode VT2 and emitter, one end is connected with the emitter of triode VT2, the resistance R6 of other end ground connection, and the resistance R7 be serially connected between the emitter of triode VT2 and the positive pole of amplifier P2 forms, the emitter of described triode VT1 is as the input end of this torque signal processing unit, and its collector is then connected with the positive pole of amplifier P1, and its base stage is then connected with the base stage of triode VT2, the base stage of described triode VT3 is connected with the output terminal of amplifier P1, ground connection while its emitter is then connected with the negative pole of amplifier P2, the output terminal of described amplifier P2 is then as the output terminal of this torque signal processing unit.
In order to reach better implementation result, described torque sensor is preferably electromagnetic torque sensor, and described amplifier P3 and amplifier P4 all preferentially adopts OPA603 type high speed current feedback operational amplifier to realize.
The utility model comparatively prior art is compared, and has the following advantages and beneficial effect:
(1) the utility model energy consumption is low, and operating cost is low, more energy-conserving and environment-protective.
(2) this practicality newly adopts isolating transformer, and it can isolate the humorous wave interference of variator test macro to electrical network, thus protection system other consumer outside is not damaged.
(3) the utility model adopts electromagnetic torque sensor to gather the torque signal of tested variator, and it can improve torque measurement precision.
(4) the utility model is more thorough to the filtering process of grid alternating current, and its working current is more smooth-going, thus it is more smooth and easy that the utility model is run.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present utility model.
Fig. 2 is torque signal processing unit circuit structure diagram of the present utility model.
Fig. 3 is two-stage low-pass filter unit circuit structure diagram of the present utility model.
The Reference numeral name of above accompanying drawing is called: 1, electric power incoming line cabinet 2, isolating transformer 3, rectification unit 4, driving variable-frequency power sources 5, feed variable-frequency power sources 6, dragging motor 7, first shaft coupling 8, torque sensor 9, tested variator 10, second shaft coupling 11, loading motor 12, torque signal processing unit 13, monitor supervision platform 131, tachometer torquemeter 132, computing machine 133, printer 14, two-stage low-pass filter unit.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment
As shown in Figure 1, the isolating transformer 2 that the utility model is connected with electric power incoming line cabinet 1 by electric power incoming line cabinet 1, the rectification unit 3 be connected with isolating transformer 2, the two-stage low-pass filter unit 14 be connected with rectification unit 3, the driving variable-frequency power sources 4 be connected with two-stage low-pass filter unit 14 and feed variable-frequency power sources 5, with the dragging motor 6 driving variable-frequency power sources 4 to be connected, by the tested variator 9 that the first shaft coupling 7 is connected with dragging motor 6, by the loading motor 11 that the second shaft coupling 10 is connected with tested variator 9, be arranged on the torque sensor 8 between dragging motor 6 and tested variator 9, the torque signal processing unit 12 be connected with torque sensor 8, and the monitor supervision platform 13 to be connected with torque signal processing unit 12 forms.
This electric power incoming line cabinet 1 is connected with the power lead of electrical network, and it is for controlling the operating voltage of whole variator test macro.Isolating transformer 2 for line voltage being changed into the voltage needed for rectification unit, and isolates the humorous wave interference of transmission test system to electrical network.Rectification unit 3 converts direct current to for system for the alternating current exported by isolating transformer 2.Two-stage low-pass filter unit 14 can carry out filtering process thoroughly to the voltage after rectification.Drive variable-frequency power sources 4 for direct current being converted to alternating current for dragging motor 6; Feed variable-frequency power sources 5 is then for being converted to direct current in alternating current for loading motor 11.Dragging motor 6 rotates for driving tested variator 9; Loading motor 11 is then for loading moment of torsion to tested variator 9.
Torque sensor 8 is for gathering the torque signal of tested variator 9, and it preferentially adopts electromagnetic torque sensor.Torque signal processing unit 12 is for processing the torque signal collected.Monitor supervision platform 13 is for monitoring test bit and analyzing.
Described monitor supervision platform 13 by tachometer torquemeter 131, the computing machine 132 be connected with tachometer torquemeter 131, and the printer 133 be connected with computing machine 132 forms.Described tachometer torquemeter 131 is connected with torque signal processing unit 12.Wherein rectification unit 3, driving variable-frequency power sources 4 and feed variable-frequency power sources 5 are prior art, have this not do and too much repeat.
As shown in Figure 2, it is by amplifier P1, amplifier P2 for this torque signal processing unit 12 structure, triode VT1, triode VT2, triode VT3, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, electric capacity C1, voltage stabilizing diode D1, diode D2 and voltage stabilizing diode D3 form.
Wherein, the N pole of this voltage stabilizing diode D1 is connected with the emitter of triode VT1, its P pole ground connection, and the P pole of diode D2 is connected with the emitter of triode VT1 after resistance R1, its N pole then ground connection after voltage stabilizing diode D3.This voltage stabilizing diode D1 and voltage stabilizing diode D2 shields in circuit, and it can make the operating voltage in circuit maintain steady state, avoids operating voltage fluctuate and produce interference to torque signal.
Simultaneously, resistance R2 is serially connected between the N pole of diode D2 and the base stage of triode VT2, resistance R3 is then serially connected between the N pole of diode D2 and the collector of triode VT2, one end of resistance R4 is connected with the collector of triode VT1, ground connection while its other end is then connected with the negative pole of amplifier P1, resistance R5 is serially connected between the base stage of triode VT2 and the collector of triode VT3, between the base stage that electric capacity C1 is then serially connected in triode VT2 and emitter, one end of resistance R6 is connected with the emitter of triode VT2, its other end ground connection, resistance R7 is serially connected between the emitter of triode VT2 and the positive pole of amplifier P2.
The emitter of described triode VT1 is as the input end of this torque signal processing unit 12, and its collector is then connected with the positive pole of amplifier P1, and its base stage is then connected with the base stage of triode VT2.The base stage of described triode VT3 is connected with the output terminal of amplifier P1, ground connection while its emitter is then connected with the negative pole of amplifier P2.The output terminal of described amplifier P2 is then as the output terminal of this torque signal processing unit 12.This amplifier P1 and amplifier P2 forms two-stage amplification system, and it can distortionlessly amplify torque signal, and thus, then the torque signal that monitor supervision platform 13 can be made to receive is more clear.
As shown in Figure 3, it is by amplifier P3, amplifier P4, triode VT4, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12 for the structure of this two-stage low-pass filter unit 14, and electric capacity C2 and electric capacity C3 forms.
During connection, one end of resistance R9 is connected with the positive pole of amplifier P3, its other end then forms the input end of this two-stage low-pass filter unit 14 after resistance R8, the positive pole of electric capacity C2 is connected with the tie point of resistance R8 with resistance R9, its negative pole is then connected with the output terminal of amplifier P3, between the positive pole that resistance R10 is then serially connected in amplifier P4 and output terminal, between the negative pole that electric capacity C3 and resistance R12 is then serially connected in amplifier P3 respectively and output terminal, one end of resistance R11 is connected with the negative pole of amplifier P3, ground connection while its other end is then connected with the base stage of triode VT4.
Meanwhile, the positive pole of described amplifier P4 is connected with the output terminal of amplifier P3, its negative pole is then connected with the base stage of triode VT4, its output terminal is connected with the collector of triode VT4.The grounded emitter of described triode VT4, its collector then form the output terminal of this two-stage low-pass filter unit 14.In order to reach better implementation result, this amplifier P3 and amplifier P4 all preferentially adopts OPA603 type high speed current feedback operational amplifier to realize.
As mentioned above, just the utility model can well be realized.
Claims (5)
1. based on the high precision variator test macro of two-stage low-pass filter circuit, by driving variable-frequency power sources (4), feed variable-frequency power sources (5), the isolating transformer (2) that electric power incoming line cabinet (1) is connected with electric power incoming line cabinet (1), the rectification unit (3) be connected with isolating transformer (2), with the dragging motor (6) driving variable-frequency power sources (4) to be connected, by the tested variator (9) that the first shaft coupling (7) is connected with dragging motor (6), by the loading motor (11) that the second shaft coupling (10) is connected with tested variator (9), be arranged on the torque sensor (8) between dragging motor (6) and tested variator (9), the torque signal processing unit (12) be connected with torque sensor (8), and the monitor supervision platform (13) to be connected with torque signal processing unit (12) forms, it is characterized in that, between the output terminal and the input end of driving variable-frequency power sources (4) and feed variable-frequency power sources (5) of rectification unit (3), be also serially connected with two-stage low-pass filter unit (14), described two-stage low-pass filter unit (14) is by amplifier P3, amplifier P4, triode VT4, one end is connected with the positive pole of amplifier P3, the other end then forms the resistance R9 of the input end of this two-stage low-pass filter unit (14) after resistance R8, positive pole is connected with the tie point of resistance R9 with resistance R8, the electric capacity C2 that negative pole is then connected with the output terminal of amplifier P3, be serially connected in the resistance R10 between the positive pole of amplifier P4 and output terminal, be serially connected in the electric capacity C3 between the negative pole of amplifier P3 and output terminal and resistance R12, and one end is connected with the negative pole of amplifier P3, while the other end is then connected with the base stage of triode VT4, the resistance R11 of ground connection forms, the positive pole of described amplifier P4 is connected with the output terminal of amplifier P3, its negative pole is then connected with the base stage of triode VT4, its output terminal is connected with the collector of triode VT4, the grounded emitter of described triode VT4, its collector then form the output terminal of this two-stage low-pass filter unit (14).
2. the high precision variator test macro based on two-stage low-pass filter circuit according to claim 1, it is characterized in that: described monitor supervision platform (13) is by tachometer torquemeter (131), the computing machine (132) be connected with tachometer torquemeter (131), and the printer (133) be connected with computing machine (132) forms; Described tachometer torquemeter (131) is then connected with torque signal processing unit (12).
3. the high precision variator test macro based on two-stage low-pass filter circuit according to claim 2, it is characterized in that: described torque signal processing unit (12) is by amplifier P1, amplifier P2, triode VT1, triode VT2, triode VT3, N pole is connected with the emitter of triode VT1, the voltage stabilizing diode D1 of P pole ground connection, P pole is connected with the emitter of triode VT1 after resistance R1, N pole is the diode D2 of ground connection after voltage stabilizing diode D3 then, be serially connected in the resistance R2 between the N pole of diode D2 and the base stage of triode VT2, be serially connected in the resistance R3 between the N pole of diode D2 and the collector of triode VT2, one end is connected with the collector of triode VT1, the resistance R4 of ground connection while the other end is then connected with the negative pole of amplifier P1, be serially connected in the resistance R5 between the base stage of triode VT2 and the collector of triode VT3, be serially connected in the electric capacity C1 between the base stage of triode VT2 and emitter, one end is connected with the emitter of triode VT2, the resistance R6 of other end ground connection, and the resistance R7 be serially connected between the emitter of triode VT2 and the positive pole of amplifier P2 forms, the emitter of described triode VT1 is as the input end of this torque signal processing unit (12), and its collector is then connected with the positive pole of amplifier P1, and its base stage is then connected with the base stage of triode VT2, the base stage of described triode VT3 is connected with the output terminal of amplifier P1, ground connection while its emitter is then connected with the negative pole of amplifier P2, the output terminal of described amplifier P2 is then as the output terminal of this torque signal processing unit (12).
4. the high precision variator test macro based on two-stage low-pass filter circuit according to claim 3, is characterized in that: described torque sensor (8) is electromagnetic torque sensor.
5. the high precision variator test macro based on two-stage low-pass filter circuit according to claim 3, is characterized in that: described amplifier P3 and amplifier P4 is OPA603 type high speed current feedback operational amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520654408.0U CN204964181U (en) | 2015-08-27 | 2015-08-27 | High accuracy derailleur test system based on two -stage low pass filter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520654408.0U CN204964181U (en) | 2015-08-27 | 2015-08-27 | High accuracy derailleur test system based on two -stage low pass filter circuit |
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| Publication Number | Publication Date |
|---|---|
| CN204964181U true CN204964181U (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520654408.0U Expired - Fee Related CN204964181U (en) | 2015-08-27 | 2015-08-27 | High accuracy derailleur test system based on two -stage low pass filter circuit |
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| Country | Link |
|---|---|
| CN (1) | CN204964181U (en) |
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2015
- 2015-08-27 CN CN201520654408.0U patent/CN204964181U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160113 Termination date: 20160827 |
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| CF01 | Termination of patent right due to non-payment of annual fee |