CN105115721A - High precision transmission test system based on precision full wave rectifier circuit - Google Patents
High precision transmission test system based on precision full wave rectifier circuit Download PDFInfo
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- CN105115721A CN105115721A CN201510532927.4A CN201510532927A CN105115721A CN 105115721 A CN105115721 A CN 105115721A CN 201510532927 A CN201510532927 A CN 201510532927A CN 105115721 A CN105115721 A CN 105115721A
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Abstract
The invention discloses a high precision transmission test system based on a precision full wave rectifier circuit, which is characterized by comprising a power supply wire inlet cabinet (1), an isolation transformer (2) which is connected to the power supply wire inlet cabinet (2), a rectification unit (3) which is connected to the isolation transformer (2), a driving frequency conversion power supply (4) and a feed frequency conversion power supply (5) which are connected to the reunification unit (3), a driving motor (6) which is connected to the driving frequency conversion power supply (4), a detected transmission which is connected to the driving motor (6) through a first coupler (7), a loading motor (22) which is connected to the detected transmission (9) through a second coupler (10), a torque sensor (8) which is arranged between the driving motor (6) and the detected transmission (9), and a torque signal processing unit (12) which is connected to the torque sensor (8). The high precision speed changer test system based on the precision full wave rectifier circuit can isolate the harmonic wave interference on the power grid by the transmission test system, and improves the torque measurement precision.
Description
Technical field
The present invention relates to a kind of variator test macro, specifically refer to the high precision variator test macro based on accurate full-wave rectifying 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.
Summary of the invention
The object of the invention is to overcome traditional defect that variator test macro energy consumption is high, measuring accuracy is inadequate, the high precision variator test macro based on accurate full-wave rectifying circuit is provided.
Object of the present invention is achieved through the following technical solutions: based on the high precision variator test macro of accurate full-wave rectifying circuit, its isolating transformer be connected with electric power incoming line cabinet by electric power incoming line cabinet, the rectification unit be connected with isolating transformer, the driving variable-frequency power sources be connected with rectification unit and feed variable-frequency power sources, 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, and the monitor supervision platform to be connected with torque signal processing unit forms.
Further, described rectification unit is by amplifier P3, amplifier P4, triode VT4, one end is connected with the negative pole of amplifier P3, the resistance R9 that the other end is then connected with the collector of triode VT4, be serially connected in the diode D4 between the negative pole of amplifier P3 and output terminal, P pole is connected with the output terminal of amplifier P3, N pole is then as the diode D5 of the output terminal of this rectification unit, be serially connected in the resistance R8 between the negative pole of amplifier P3 and the N pole of diode D5, be serially connected in the diode D6 between the negative pole of amplifier P4 and output terminal, the resistance R10 be in parallel with diode D6, P pole is connected with the output terminal of amplifier P4, the diode D7 that N pole is then connected with the N pole of diode D5 forms, the negative pole of described amplifier P4 is connected with the collector of triode VT4, its positive pole is then connected with the base stage of triode VT4, the collector of described triode VT4 is then as input end, its grounded emitter of this rectification unit, the plus earth of described amplifier P3.
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.
Described torque sensor is electromagnetic torque sensor.
The present invention comparatively prior art compares, and has the following advantages and beneficial effect:
(1) energy consumption of the present invention 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 present invention adopts electromagnetic torque sensor to gather the torque signal of tested variator, and it can improve torque measurement precision.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention.
Fig. 2 is torque signal processing unit circuit structure diagram of the present invention.
Fig. 3 is rectification unit circuit structure diagram of the present invention.
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.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, the isolating transformer 2 that the present invention 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 driving variable-frequency power sources 4 be connected with rectification unit 3 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.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 drive variable-frequency power sources 4 and feed variable-frequency power sources 5 to be 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 comprises amplifier P3 to the structure of rectification unit 3, amplifier P4, triode VT4, resistance R8, resistance 9, resistance R10, diode D4, diode D5, diode D6, and diode D7.
Wherein, diode D4, diode D5 forms the first rectifier, and between the negative pole that this diode D4 is serially connected in amplifier P3 and output terminal, the P pole of diode D5 is connected with the output terminal of amplifier P3, its N pole is then as the output terminal of this rectification unit 3.
Diode D6 and diode D7 then forms the second rectifier, and between the negative pole that this diode D6 is serially connected in amplifier P4 and output terminal, the P pole of diode D7 is connected with the output terminal of amplifier P4, its N pole is then connected with the N pole of diode D5.
Meanwhile, one end of resistance R9 is connected with the negative pole of amplifier P3, its other end is then connected with the collector of triode VT4, and resistance R8 is then serially connected between the negative pole of amplifier P3 and the N pole of diode D5, and resistance R10 and diode D6 is in parallel.The negative pole of described amplifier P4 is connected with the collector of triode VT4, its positive pole is then connected with the base stage of triode VT4.The collector of described triode VT4 is then as input end, its grounded emitter of this rectification unit 3; The plus earth of described amplifier P3.By said structure, this circuit then forms an accurate full-wave rectifying circuit, and it can convert direct current to alternating current efficiently.
As mentioned above, just the present invention can well be realized.
Claims (4)
1. based on the high precision variator test macro of accurate full-wave rectifying circuit, it is characterized in that: the isolating transformer (2) be 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 driving variable-frequency power sources (4) be connected with rectification unit (3) 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, described rectification unit (3) is by amplifier P3, amplifier P4, triode VT4, one end is connected with the negative pole of amplifier P3, the resistance R9 that the other end is then connected with the collector of triode VT4, be serially connected in the diode D4 between the negative pole of amplifier P3 and output terminal, P pole is connected with the output terminal of amplifier P3, N pole is then as the diode D5 of the output terminal of this rectification unit (3), be serially connected in the resistance R8 between the negative pole of amplifier P3 and the N pole of diode D5, be serially connected in the diode D6 between the negative pole of amplifier P4 and output terminal, the resistance R10 be in parallel with diode D6, P pole is connected with the output terminal of amplifier P4, the diode D7 that N pole is then connected with the N pole of diode D5 forms, the negative pole of described amplifier P4 is connected with the collector of triode VT4, its positive pole is then connected with the base stage of triode VT4, the collector of described triode VT4 is then as input end, its grounded emitter of this rectification unit (3), the plus earth of described amplifier P3.
2. the high precision variator test macro based on accurate full-wave rectifying 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 accurate full-wave rectifying 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 accurate full-wave rectifying circuit according to claim 3, is characterized in that: described torque sensor (8) is electromagnetic torque sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510532927.4A CN105115721A (en) | 2015-08-27 | 2015-08-27 | High precision transmission test system based on precision full wave rectifier circuit |
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| CN201510532927.4A CN105115721A (en) | 2015-08-27 | 2015-08-27 | High precision transmission test system based on precision full wave rectifier circuit |
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| CN105115721A true CN105115721A (en) | 2015-12-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106685247A (en) * | 2017-01-12 | 2017-05-17 | 中国科学院地质与地球物理研究所 | Precise rectification system for weak small signals |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106685247A (en) * | 2017-01-12 | 2017-05-17 | 中国科学院地质与地球物理研究所 | Precise rectification system for weak small signals |
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Application publication date: 20151202 |