A vibration test device and test method for multi-channel input and output products

Abstract

A vibration test device and method for multi-channel input and output products, involving the field of real-time vibration test, including a housing, a band switch, a voltmeter, a terminal block, a Chaoyang power supply, a transfer connector, a cable, a product transfer socket and a vibration tooling. The band switch, the voltmeter, the terminal block, the Chaoyang power supply and the transfer connector are fixedly connected to the housing, each vibration tooling is installed with multiple tested products, and each tested product is connected to a product transfer socket; one end of the cable is connected to the transfer connector, and the other end is connected to the product transfer socket. It provides a strong guarantee for real-time monitoring of product performance when the tested product is subjected to vibration test.

Description

Technical Field

[0001] This patent relates to a test method for real-time monitoring during a vibration test, and is particularly suitable for products with dual-channel input and six-channel output. It monitors product performance in real time under test conditions that meet the vibration level, and belongs to the technical field of real-time testing of vibration tests. Background Art

[0002] During the vibration test of the product, real-time data testing is performed. According to the requirements of product design specifications and process documents, the vibration test requires the product to be rigidly connected to the vibration fixture and the vibration table, and the product performance is monitored in real time during the product vibration test.

[0003] The current situation is that before the vibration test of the product, it is necessary to prepare power supply, multimeter, signal source connection line, etc., use the connection line to connect each device according to the wiring relationship, fix the product on the vibration tooling and rigidly connect it to the vibration table. During the test, the output points of the signal source and multimeter connection are manually replaced to achieve real-time power-on and monitoring during the vibration process. The shortcomings of this method are: 1) There are many types and quantities of equipment; 2) The manual scattered line connection mode is cumbersome, error-prone, and unreliable; 3) The dual-channel input and output wiring are not replaced in time and there is a risk of misconnection. 4) It is small to meet the vibration test of 3 units at a time, which affects efficiency. Summary of the invention

[0004] The technical problem solved by the present application is: to overcome the deficiencies of the prior art, to provide a testing device and a real-time monitoring method for a product under a vibration test, to connect various components, and to provide a strong guarantee for ensuring real-time monitoring of the performance of the product when the tested product is subjected to a vibration test.

[0005] This patent integrates the power supply, signal source and multimeter into one test bench. Only the adjustment of the band switch is required to achieve real-time switching of the input and real-time display of the output of the dual-channel product.

[0006] The technical solutions provided by this application are as follows:

[0007] A vibration test device for a multi-channel input and output product, comprising a housing, a band switch group, a voltmeter, a terminal block, a Chaoyang power supply, a transfer connector, a cable, a product transfer socket and a vibration tooling, wherein the band switch group, the voltmeter, the terminal block, the Chaoyang power supply and the transfer connector are fixedly connected to the housing, and each vibration tooling is installed with a plurality of tested products; one end of the cable is connected to the transfer connector, and the other end is connected to the product transfer socket, the product transfer socket is fixedly connected to the vibration tooling, and each tested product is plugged into a product transfer socket;

[0008] There is at least one circuit structure to be tested inside the product under test; the Chaoyang power supply is used to convert the external power supply to the target voltage and is connected to each circuit structure to be tested of each product under test through a cable; the product under test is connected to the regulated power supply and / or ground through the wiring terminal;

[0009] The band switch group includes a plurality of band switches, and the voltmeter is connected to the output end of each circuit structure to be tested of the tested product through the band switches;

[0010] By switching the gears of different band switches, the output voltage of each circuit structure to be tested of multiple tested products is obtained.

[0011] The circuit structure to be tested of the product under test is a power conversion circuit module or a servo amplifier circuit module;

[0012] The band switch group includes an input band switch and an output band switch;

[0013] For the servo amplifier circuit module, the voltmeter is connected to the output end of the servo amplifier circuit module through the output band switch; the voltage regulator is connected to the input end of the servo amplifier circuit module through the input band switch, and the voltage value of the voltage regulator input is adjustable to input input signals of different voltage values ​​to the servo amplifier circuit module, and the output of the servo amplifier circuit module is obtained through the voltmeter;

[0014] For the power conversion circuit module, the voltmeter is connected to the output end of the power conversion circuit module through an output band switch.

[0015] When a circuit structure to be tested of the product under test is a servo amplifier circuit module, the input band switch includes a band switch K1, and the output band switch includes a band switch K2;

[0016] The wiring terminals include signal input wiring terminals and GND wiring terminals;

[0017] The servo amplifier circuit module of the product under test has a signal output terminal and at least one signal input terminal. Each signal input terminal is connected to a signal input terminal through a band switch K1. The signal input terminal is used to connect a voltage-stabilized power supply. Each signal output terminal is connected to a voltmeter through a band switch K2. The voltmeter is grounded through a GND terminal.

[0018] When a circuit structure to be tested of the product under test is a power conversion circuit module, the output band switch further comprises a conversion band switch;

[0019] The power conversion circuit module has a first positive voltage output terminal and a first negative voltage output terminal, and the first positive voltage output terminal and the first negative voltage output terminal are respectively connected to different voltmeters through the same conversion band switch.

[0020] The shell is provided with an external power interface, the external power interface and the Chaoyang power supply are connected through a power supply wire, and a power switch is provided on the power supply wire, and the power switch is used to control the on and off between the external power interface and the Chaoyang power supply.

[0021] The wiring terminals also include a Chaoyang power supply output wiring terminal, which is connected to the output wire of the Chaoyang power supply output end; one end of the multimeter is connected to the Chaoyang power supply output wiring terminal and the other end is grounded to monitor the voltage converted by the Chaoyang power supply in real time.

[0022] An ammeter is also fixedly connected to the shell, and the ammeter is connected to the output wire; if the difference between the measured value of the ammeter and the estimated current corresponding to the power consumption of the measured product exceeds the required range, the measured product is damaged.

[0023] The cable-connected product adapter socket is provided with a fixed lug, which is fixedly connected to the fixed fixture by means of screws and nuts, and the product under test is plugged into the product adapter socket.

[0024] When the product under test includes two power conversion circuit modules and two servo amplifier circuit modules, the band switch includes a band switch K1, a band switch K2, a band switch K3 and a band switch K4;

[0025] The voltmeter includes a first voltmeter and a second voltmeter;

[0026] The wiring terminals include signal input wiring terminals and GND wiring terminals;

[0027] The product under test has a voltage access terminal, a signal input terminal, a GND connection terminal, a first positive output terminal, a second positive output terminal, an A1B1 output terminal, a first negative output terminal, a second negative output terminal and an A2B2 output terminal; the signal input terminal includes an A1 input terminal, an A2 input terminal, a B1 input terminal and a B2 input terminal;

[0028] The Chaoyang power supply is connected with an output wire, the other end of which is divided into multiple branches, which are respectively connected to the voltage access terminal of each product under test through a transfer connector and a cable;

[0029] The GND terminal is used for grounding, and a grounding wire is connected to the GND terminal. The other end of the grounding wire is branched into multiple wires and respectively connected to the GND connection terminal of each product under test;

[0030] The signal input terminal is used to connect the voltage-stabilized power supply, and the signal input terminal is connected to the band switch K1 through the signal input wire. The band switch K1 is connected to multiple groups of signal input wires, each group of signal input wires includes A1 input wire, A2 input wire, B1 input wire and B2 input wire, and each group of signal input wires is respectively connected to the A1 input terminal, A2 input terminal, B1 input terminal and B2 input terminal of a product under test through a transfer connector and a cable; the band switch K1 has a zero position, an A1A2 input position and a B1B2 input position. In the zero position, the A1 input terminal, A2 input terminal, B1 input terminal and B2 input terminal are all grounded; in the A1A2 input position, the A1 input terminal and the A2 input terminal are both connected to the signal input terminal, and the B1 input terminal and the B2 input terminal are both grounded; in the B1B2 input position, the A1 input terminal and the A2 input terminal are both grounded, and the B1 input terminal and the B2 input terminal are both connected to the signal input terminal; by switching the gear of the band switch K1, the product under test has different inputs;

[0031] One end of the first voltmeter is grounded, and the other end is connected to the band switch K2, the band switch K3 and the band switch K4 in sequence through the first measuring wire, the third measuring wire and the fifth measuring wire; one end of the second voltmeter is grounded, and the other end is connected to the band switch K2, the band switch K3 and the band switch K4 in sequence through the second measuring wire, the fourth measuring wire and the sixth measuring wire;

[0032] The band switch K3 is connected to a plurality of wires, which are respectively connected to the first positive output terminal of each product under test through a transfer connector and a cable; the band switch K4 is connected to a plurality of wires, which are respectively connected to the second positive output terminal of each product under test through a transfer connector and a cable; the band switch K2 is connected to a plurality of wires, which are respectively connected to the A1B1 output terminal of each product under test through a transfer connector and a cable;

[0033] The band switch K3 is connected to multiple wires, which are respectively connected to the first negative output terminal of each product under test through adapter connectors and cables. The band switch K4 is connected to multiple wires, which are respectively connected to the second negative output terminal of each product under test through adapter connectors and cables. The band switch K2 is connected to multiple wires, which are respectively connected to the A2B2 output terminal of each product under test through adapter connectors and cables.

[0034] A vibration test method for a multi-channel input and output product, according to any of the above-mentioned vibration test devices for a multi-channel input and output product, comprising:

[0035] Verify the power consumption of the product under test;

[0036] Conduct zero position measurement of the product under test;

[0037] The detection of the tested product includes: placing the band switch K3 and the band switch K4 in neutral, placing the band switch K1 in the A1A2 input gear and the B1B2 input gear respectively, and sequentially shifting the gear of the band switch K2 in each gear, and adjusting the voltage value of the input signal by a voltage-stabilized power supply in each gear to form a plurality of input signals with different voltage values, and collecting a plurality of output signals corresponding to the two gears respectively on a first voltmeter and a second voltmeter at the same time, and obtaining a plurality of output signals of each tested product in each gear; for each tested product, at each gear, calculating the nonlinearity of the tested product according to its output signal.

[0038] The detection of the tested product also includes: placing the band switch K2 and the band switch K4 in neutral, turning the band switch K3, and sequentially detecting the first positive output terminal and the first negative output terminal of each tested product; for each tested product, adjusting the voltage value of the input signal through the voltage-stabilized power supply to form a plurality of input signals with different voltage values, and collecting the output signal of each tested product through the first voltmeter and the second voltmeter; placing the band switch K2 and the band switch K3 in neutral, turning the band switch K4, and sequentially detecting the second positive output terminal and the second negative output terminal of each tested product; for each tested product, adjusting the voltage value of the input signal through the voltage-stabilized power supply to form a plurality of input signals with different voltage values, and collecting the output signal of each tested product through the first voltmeter and the second voltmeter.

[0039] The zero position measurement of the product under test includes: adjusting the band switch K1 to the zero position so that the A1 input terminal, the A2 input terminal, the B1 input terminal and the B2 input terminal are all grounded, reading the readings of the first voltmeter and the second voltmeter, if the readings are within the range of the circuit output of the product under test, the product performance is qualified, otherwise it is abnormal.

[0040] In summary, this application at least includes the following beneficial technical effects:

[0041] (1) This patent adopts product adapter socket, tail cover and vibration tooling to achieve electrical and structural fixation of the product in vibration state, meeting the requirements of rigid connection under mechanical environment.

[0042] (2) This patent uses a current source, a band switch, a voltage source, a terminal block, a switch, a transfer connector (plug and socket), and a cable; the product transfer socket and tail cover, vibration tooling, and Chaoyang power supply cooperate with each other to achieve real-time monitoring of product performance during vibration testing, meeting the requirements of real-time testing in a mechanical environment.

[0043] (3) This patent uses adapter connectors (plugs and sockets), cables; the electrical connection of the product adapter socket and the tail cover can meet the requirements of conducting vibration tests on 9 products at the same time and monitoring data in real time.

[0044] (4) This patent adopts a band switch setting to avoid the problem of easy errors and poor contact caused by repeated wiring, disconnection, and line replacement.

[0045] (4) This patent adopts a built-in power supply to realize the power supply of the test bench itself and the required signal source, reducing the number of instruments and meters carried. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is the overall structural diagram of the test device;

[0047] Figure 2 It is the overall schematic diagram of the circuit structure of the test device;

[0048] Figure 3 See the simplified diagram for the circuit connections for a product under test.

[0049] Explanation of the figure numbers: 1. Shell; 2. Ammeter; 3. Band switch; 4. Voltmeter; 5. Terminal block; 6. Power switch; 7. Adapter connector; 8. Cable; 9. Product adapter socket; 10. Vibration tooling; 11. Chaoyang power supply. DETAILED DESCRIPTION

[0050] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments disclosed in the present invention will be further described in detail below with reference to the accompanying drawings.

[0051] In this embodiment, the product under test has two power conversion circuit modules and two servo amplifier circuit modules, and the power conversion circuit modules and the servo amplifier circuit modules are both connected to a power supply. The signal output end of one servo amplifier circuit module is an A1 input end and a B1 input end, and the signal input end is an A1B1 output end. The signal output end of another servo amplifier circuit module is an A2 input end and a B2 input end, and the signal input end is an A2B2 output end. The signal output end of one servo amplifier circuit module is a first positive voltage output end (+15V output end) and a first negative voltage output end (-15V output end). The signal output end of another servo amplifier circuit module is a second positive voltage output end (+9V output end) and a second negative voltage output end (-9V output end).

[0052] The present application embodiment discloses a testing device for real-time monitoring of product performance during a vibration test process, such as Figure 1 As shown, it includes a housing 1, an ammeter 2, a band switch group 3, a voltmeter 4, a terminal block 5, a power switch 6, a transfer connector 7, a cable 8, a product transfer socket 9, a vibration tool 10 and a Chaoyang power supply 11. The above features cooperate with each other to realize real-time performance monitoring of multiple tested products during simultaneous vibration tests. The tested product is a system controller.

[0053] The ammeter 2, the band switch group 3, the voltmeter 4, the connection terminal 5, the power switch 6, the adapter connector 7 and the Chaoyang power supply 11 are all fixedly connected to the housing 1. Three adapter connectors 7 are arranged on one housing 1.

[0054] The housing 1 is also provided with an external power interface (the external power interface is a 220V AC power access point). The external power interface is connected to the Chaoyang power supply 11 through a power supply wire, and a power switch 6 is provided on the power supply wire. The power switch 6 is used to control the on-off between the external power interface and the Chaoyang power supply 11, so as to control the power on and off through the power switch 6.

[0055] like Figure 2 and Figure 3 As shown, the Chaoyang power supply 11 is connected to an output wire, and the output wire is connected to an ammeter 2. The other end of the output wire is branched into 9 branches, and each 3 of the 9 branches form a group, and a group of branches is connected to a transfer connector 7. Each vibration tool 10 can perform vibration tests on 3 tested products. One end of the cable 8 is connected to the transfer connector 7, and the other end is divided into three branches and connected to a product transfer socket 9 respectively. Each tested product is connected to a product transfer socket 9. The connection of the tested product. The cable 8 includes multiple lead wires. The 28V voltage is output to the nine branches through the output wire, and the nine branches are connected to each tested product through the transfer connector 7 and the cable 8.

[0056] The band switch group 3 includes 4 band switches, namely, band switch K1, band switch K2, band switch K3 and band switch K4. Band switch K1 has 4 gears, namely, neutral gear, zero gear, A1A2 input gear and B1B2 input gear. Band switch K2, band switch K3 and band switch K4 each have 10 gears, namely, 9 product output end connection gears and 1 neutral gear.

[0057] The voltmeter 4 includes two voltmeters, namely a first voltmeter and a second voltmeter.

[0058] The wiring terminal 5 includes a 28V wiring terminal, a signal input wiring terminal and a GND wiring terminal. The 28V wiring terminal is connected to the output wire.

[0059] The product under test has a voltage access terminal, a signal input terminal, a GND connection terminal, a +15V output terminal, a +9V output terminal, an A1B1 output terminal, a -15V output terminal, a -9V output terminal, and an A2B2 output terminal. The voltage access terminal is a 28V access terminal. The signal input terminal includes an A1 input terminal, an A2 input terminal, a B1 input terminal, and a B2 input terminal.

[0060] The A1B1 output terminal corresponds to the A1 input terminal or the BI input terminal, and has only one input, that is, when the A1 input terminal is connected to the signal input wiring terminal, the output of the product under test is output through the A1B1 output terminal, and when the BI input terminal is connected to the signal input wiring terminal, the output of the product under test is output through the A1B1 output terminal; the A2B2 output terminal corresponds to the A2 input terminal or the B2 input terminal, and has only one input, that is, when the A2 input terminal is connected to the signal input wiring terminal, the output of the product under test is output through the A2B2 output terminal, and when the B2 input terminal is connected to the signal input wiring terminal, the output of the product under test is output through the A2B2 output terminal.

[0061] The 28V terminal block is connected to the output wire; the output wire is connected to the voltage access terminal of each product under test through the adapter connector 7 and the cable 8 to supply power to each product under test.

[0062] The signal input terminal is connected to the band switch K1 through the signal input wire. The band switch K1 is connected to nine groups of signal input wires. Each group of signal input wires includes A1 input wire, A2 input wire, B1 input wire and B2 input wire. The A1 input wire, A2 input wire, B1 input wire and B2 input wire are respectively connected to the signal input terminal corresponding to each product under test through the adapter connector 7 and the cable 8. The signal input terminal is used to connect the stabilized power supply, and the stabilized power supply is used to adjust the voltage value of the input signal.

[0063] The neutral position, zero position, A1A2 input position and B1B2 input position of the band switch K1 are:

[0064] Neutral gear: A1 input terminal, A2 input terminal, B1 input terminal and B2 input terminal are not connected to the signal input terminal and are not grounded; in zero position gear, A1 input terminal, A2 input terminal, B1 input terminal and B2 input terminal are all grounded; in A1A2 input gear, A1 input terminal and A2 input terminal are connected to the signal input terminal, and B1 input terminal and B2 input terminal are both grounded; in B1B2 input gear, A1 input terminal and A2 input terminal are both grounded, and B1 input terminal and B2 input terminal are connected to the signal input terminal.

[0065] The GND terminal block is connected to the adapter connector 7 through 9 grounding wires. The adapter connector 7 connects the 9 grounding wires to the GND connection terminals of 9 tested products through cables 8. The GND terminal block is commonly used for grounding.

[0066] One end of the first voltmeter is connected to the ground terminal, and the other end is connected to the band switch K2, band switch K3 and band switch K4 in sequence through the first measuring wire, the third measuring wire and the fifth measuring wire. Band switch K3 is connected to 9 wires, which are respectively connected to the +15V output terminal of each product under test through the adapter connector 7 and the cable 8. Band switch K4 is connected to 9 wires, which are respectively connected to the +9V output terminal of each product under test through the adapter connector 7 and the cable 8. Band switch K2 is connected to 9 wires, which are respectively connected to the A1B1 output terminal of each product under test through the adapter connector 7 and the cable 8. One end of the second voltmeter is connected to the ground terminal, and the other end is connected to the band switch K2, band switch K3 and band switch K4 in sequence through the second measuring wire, the fourth measuring wire and the sixth measuring wire. Band switch K3 is connected with 9 wires, which are respectively connected to the -15V output terminal of each tested product through adapter connector 7 and cable 8. Band switch K4 is connected with 9 wires, which are respectively connected to the -9V output terminal of each tested product through adapter connector 7 and cable 8. Band switch K2 is connected with 9 wires, which are respectively connected to the A2B2 output terminal of each tested product through adapter connector 7 and cable 8. 220V AC is connected in series with a fuse to avoid the risk of electric shock to human body.

[0067] The power supply signals and output signals of the 9 products are realized by connecting the connector at the product end and the connector at the vibration test bench respectively through 3 sets of 1-to-3 tooling cables 8.

[0068] The connection between the tested product and the cable 8 is fixed by screws, flat plates, spring washers and nuts through a connector with a dedicated hole and the tested product with matching holes, thereby ensuring the stability of the connection between the tested product and the cable 8.

[0069] The vibrating product is connected to the connector installed on the vibration tooling, and the product is connected through the fixing holes of the product and the holes adapted to the vibration tooling. The product is fixed with screws, flat plates, spring washers, and nuts.

[0070] The housing 1 is an aluminum frame, which is light in material, reliable in structure, and convenient for transportation.

[0071] Ammeter 2 is connected in series to the 28V power supply and measures the power consumption of the product with an accuracy of 0.001A.

[0072] The band switch K1 is set up with 4 channels and 4 gears. All the input terminals of the product are short-circuited to realize zero-position testing. The input terminals of the product are respectively connected to the signal source to realize dual-channel input. The band switches K2, K3, and K4 are limited to a maximum of 24 layers of arrangement and adopt a 2-channel 10-gear arrangement, while realizing real-time testing of 6 channels and 9 outputs.

[0073] The voltmeter 4 is connected in parallel to both ends of the measured signal, and measures the measured voltage value with an accuracy of 0.001V.

[0074] Chaoyang Power Supply 11 uses 220V to 28V specifications and is equipped with a 220V switch fuse.

[0075] Cable 8; product adapter socket 9, vibration tooling 10 cable realize the electrical connection between the product and the test bench.

[0076] The product transfer socket 9 and the vibration tooling 10 have a hole matching relationship.

[0077] The product under test has dual-channel input and 6-channel real-time output.

[0078] The test method of the vibration test device based on the above-mentioned multi-channel input and output product includes:

[0079] Voltage monitoring after conversion by Chaoyang power supply 11: Use a multimeter, connect one end of the multimeter to the 28V terminal and the other end to ground, and monitor the voltage after conversion by Chaoyang power supply 11 in real time to confirm that it is the target voltage 28V.

[0080] Power consumption of the tested product: After turning on the power switch 6, read the measured value of ammeter 2. Ammeter 2 is used to measure the total power consumption of the circuit. If the difference between the measured value of ammeter 2 and the estimated current corresponding to the power consumption of the tested product is too large, the product may be damaged. Do not perform the following steps. If the difference is within the required range, continue the following tests. This step enables monitoring of one or more products and timely judgment of performance.

[0081] Zero-position measurement of the product under test: ground the A1 input terminal, A2 input terminal, B1 input terminal and B2 input terminal, and read the readings of the first voltmeter and the second voltmeter. If the readings are within the range of the circuit output of the product under test, the product performance is qualified, otherwise it is abnormal;

[0082] The band switch K3 and the band switch K4 are placed in neutral, and the band switch K1 is placed in the A1A2 input gear and the B1B2 input gear respectively. The gear of the band switch K2 is sequentially toggled in each gear, and the voltage value of the input signal is adjusted by the voltage-stabilized power supply in each gear to form multiple input signals with different voltage values. At the same time, multiple output signals corresponding to the two gears are collected by the first voltmeter and the second voltmeter, respectively, to obtain multiple output signals of each tested product in each gear; for each tested product, the nonlinearity of the tested product is calculated according to its output signal in each gear;

[0083] Put the band switch K2 and the band switch K4 in neutral, turn the band switch K3, and test the +15V output terminal and -15V output terminal of each tested product in turn; for each tested product, adjust the voltage value of the input signal through the voltage-stabilized power supply to form multiple input signals with different voltage values, and collect the output signal of each tested product through the first voltmeter and the second voltmeter;

[0084] Set the band switch K2 and the band switch K3 to neutral, turn the band switch K4, and test the +9V output terminal and -9V output terminal of each tested product in turn; for each tested product, adjust the voltage value of the input signal through the voltage-stabilized power supply to form multiple input signals with different voltage values, and collect the output signal of each tested product through the first voltmeter and the second voltmeter.

[0085] The contents not described in detail in this application specification belong to the common knowledge of those skilled in the art.

[0086] The present application is described in detail above in conjunction with specific implementation methods and exemplary examples, but these descriptions cannot be understood as limiting the present application. Those skilled in the art understand that, without departing from the spirit and scope of the present application, a variety of equivalent replacements, modifications or improvements can be made to the technical solution of the present application and its implementation methods, all of which fall within the scope of the present application. The scope of protection of the present application shall be subject to the attached claims.

Claims

1. A vibration test device for multi-channel input and output products, characterized in that: The device comprises a housing (1), a band switch group (3), a voltmeter (4), a wiring terminal (5), a Chaoyang power supply (11), a transfer connector (7), a cable (8), a product transfer socket (9) and a vibration tool (10); the band switch group (3), the voltmeter (4), the wiring terminal (5), the Chaoyang power supply (11) and the transfer connector (7) are fixedly connected to the housing (1); each vibration tool (10) is installed with a plurality of products to be tested; one end of the cable (8) is connected to the transfer connector (7), and the other end is connected to the product to be tested via the product transfer socket (9); There is at least one circuit structure to be tested inside the product under test; the Chaoyang power supply (11) converts the external power supply to a target voltage, and applies the target voltage to each circuit structure to be tested of each product under test through a switching connector (7) and a cable (8); the product under test is connected to a regulated power supply and / or grounded through a wiring terminal (5); The band switch group (3) includes a plurality of band switches, and the voltmeter (4) is connected to the output end of each circuit structure to be tested of the tested product through the band switches, the adapter connector (7) and the cable (8); By switching the gears of different band switches, the output voltage of each circuit structure to be tested of multiple tested products is obtained.

2. A vibration test device for a multi-channel input and output product according to claim 1, characterized in that: The circuit structure to be tested of the product under test is a power conversion circuit module or a servo amplifier circuit module; The band switch group (3) includes an input band switch and an output band switch; For the servo amplifier circuit module, a voltmeter (4) is connected to the output end of the servo amplifier circuit module through an output band switch; a voltage-stabilized power supply is connected to the input end of the servo amplifier circuit module through an input band switch, and the voltage value of the voltage-stabilized power supply input is adjustable so as to input input signals of different voltage values ​​to the servo amplifier circuit module, and the output of the servo amplifier circuit module is obtained through the voltmeter (4); For the power conversion circuit module, the voltmeter (4) is connected to the output end of the power conversion circuit module through an output band switch.

3. A vibration test device for a multi-channel input and output product according to claim 2, characterized in that: When a circuit structure to be tested of the product under test is a servo amplifier circuit module, the input band switch includes a band switch K1, and the output band switch includes a band switch K2; The wiring terminal (5) comprises a signal input wiring terminal and a GND wiring terminal; The servo amplifier circuit module of the product under test has a signal output terminal and at least one signal input terminal. Each signal input terminal is connected to a signal input terminal through a band switch K1. The signal input terminal is used to connect a voltage-stabilized power supply. Each signal output terminal is connected to a voltmeter through a band switch K2. The voltmeter is grounded through a GND terminal.

4. A vibration test device for a multi-channel input and output product according to claim 2, characterized in that: When a circuit structure to be tested of the product under test is a power conversion circuit module, the output band switch further comprises a conversion band switch; The power conversion circuit module has a positive voltage output terminal and a negative voltage output terminal, and the positive voltage output terminal and the negative voltage output terminal are respectively connected to different voltmeters through the same conversion band switch.

5. A vibration test device for a multi-channel input and output product according to claim 1, characterized in that: The housing (1) is provided with an external power interface, the external power interface is connected to the Chaoyang power supply (11) via a power supply wire, a power switch (6) is provided on the power supply wire, and the power switch (6) is used to control the on / off between the external power interface and the Chaoyang power supply (11); The wiring terminal (5) includes a Chaoyang power supply output wiring terminal, which is connected to the output end of the Chaoyang power supply (11); one end of the multimeter is connected to the Chaoyang power supply output wiring terminal and the other end is grounded to monitor the converted voltage of the Chaoyang power supply (11) in real time.

6. A vibration test device for a multi-channel input and output product according to claim 1, characterized in that: The housing (1) is also fixedly connected to an ammeter (2), which is connected to the output end of the Chaoyang power supply (11); if the difference between the measured value of the ammeter (2) and the estimated current corresponding to the power consumption of the product under test exceeds the required range, the performance of the product under test is abnormal.

7. A vibration test device for a multi-channel input and output product according to claim 1, characterized in that: The product under test includes two power conversion circuit modules and two servo amplifier circuit modules; The band switch group (3) comprises a band switch K1, a band switch K2, a band switch K3 and a band switch K4; The voltmeter (4) comprises a first voltmeter and a second voltmeter; The wiring terminal (5) comprises a signal input wiring terminal and a GND wiring terminal; The product under test has a voltage access terminal, a signal input terminal, a GND connection terminal, a first positive output terminal, a second positive output terminal, an A1B1 output terminal, a first negative output terminal, a second negative output terminal and an A2B2 output terminal; the signal input terminal includes an A1 input terminal, an A2 input terminal, a B1 input terminal and a B2 input terminal; the signal output terminal of one servo amplifier circuit module is an A1 input terminal and a B1 input terminal, and the signal input terminal is an A1B1 output terminal, and the signal output terminal of another servo amplifier circuit module is an A2 input terminal and a B2 input terminal, and the signal input terminal is an A2B2 output terminal; the signal output terminal of one servo amplifier circuit module is a first positive voltage output terminal and a first negative voltage output terminal, and the signal output terminal of another servo amplifier circuit module is a second positive voltage output terminal and a second negative voltage output terminal; The Chaoyang power supply (11) is connected to an output wire, the other end of the output wire is branched into a plurality of branches, and the plurality of branches are respectively connected to the voltage access terminal of each product under test through a transfer connector (7) and a cable (8); The GND terminal is used for grounding, and a grounding wire is connected to the GND terminal. The other end of the grounding wire is branched into multiple wires and respectively connected to the GND connection terminal of each product under test; The signal input terminal is used to connect a voltage-stabilized power supply, and the signal input terminal is connected to a band switch K1 through a signal input wire. The band switch K1 is connected to a plurality of groups of signal input wires, each group of signal input wires includes an A1 input wire, an A2 input wire, a B1 input wire and a B2 input wire, and each group of signal input wires is respectively connected to an A1 input terminal, an A2 input terminal, a B1 input terminal and a B2 input terminal of a product under test through a transfer connector (7) and a cable (8); the band switch K1 has a zero position. , A1A2 input gear and B1B2 input gear, zero gear, A1 input terminal, A2 input terminal, B1 input terminal and B2 input terminal are all grounded; A1A2 input gear, A1 input terminal and A2 input terminal are all connected to the signal input terminal, and B1 input terminal and B2 input terminal are all grounded; B1B2 input gear, A1 input terminal and A2 input terminal are all grounded, and B1 input terminal and B2 input terminal are all connected to the signal input terminal; By switching the gear of the band switch K1, the product under test has different inputs; One end of the first voltmeter is grounded, and the other end is connected to the band switch K2, the band switch K3 and the band switch K4 in sequence through the first measuring wire, the third measuring wire and the fifth measuring wire; one end of the second voltmeter is grounded, and the other end is connected to the band switch K2, the band switch K3 and the band switch K4 in sequence through the second measuring wire, the fourth measuring wire and the sixth measuring wire; The band switch K3 is connected to a plurality of wires, which are respectively connected to the first positive output terminal of each product under test through a transfer connector (7) and a cable (8); the band switch K4 is connected to a plurality of wires, which are respectively connected to the second positive output terminal of each product under test through a transfer connector (7) and a cable (8); the band switch K2 is connected to a plurality of wires, which are respectively connected to the A1B1 output terminal of each product under test through a transfer connector (7) and a cable (8); The band switch K3 is connected to a plurality of wires, which are respectively connected to the first negative output terminal of each product under test through a transfer connector (7) and a cable (8); the band switch K4 is connected to a plurality of wires, which are respectively connected to the second negative output terminal of each product under test through a transfer connector (7) and a cable (8); the band switch K2 is connected to a plurality of wires, which are respectively connected to the A2B2 output terminal of each product under test through a transfer connector (7) and a cable (8).

8. A vibration test method for a multi-channel input and output product, characterized in that: A vibration test device for a multi-channel input and output product according to any one of claims 1 to 7, comprising: Supply power to the product under test; Verify the power consumption of the product under test; Conduct zero-position measurement of the product under test; Conduct testing of the product under test, including: Measuring the servo amplifier circuit module, at this time, the conversion band switches connected to the power conversion circuit module are all placed in neutral, adjusting the input voltage of the voltage-stabilized power supply so that a servo amplifier circuit module of all the tested products has multiple different input voltages, and at the same time switching the gear position of the output band switch at each input voltage to obtain the voltage output of a servo amplifier circuit module of all the tested products; adjusting the input band switch gear position, switching to the voltage-stabilized power supply to input the voltage to the next servo amplifier circuit module of the tested product, repeating the above steps to obtain the voltage output of the corresponding servo amplifier circuit module; Measure a power conversion circuit module, set the input band switch to neutral, adjust the gear position of the corresponding conversion band switch, so that the regulated power supply is applied to the corresponding power conversion circuit module of each product under test in turn, and at the same time, the power conversion circuit module measures the output voltage of the positive voltage output terminal and the negative voltage output terminal.

9. A vibration test method for a multi-channel input and output product according to claim 8, characterized in that: The testing of the tested product includes: The band switch K3 and the band switch K4 are placed in neutral, and the band switch K1 is placed in the A1A2 input gear and the B1B2 input gear respectively. The gear of the band switch K2 is sequentially toggled in each gear, and the voltage value of the input signal is adjusted by the voltage-stabilized power supply in each gear to form multiple input signals with different voltage values. At the same time, multiple output signals corresponding to the two gears are collected by the first voltmeter and the second voltmeter, respectively, to obtain multiple output signals of each tested product in each gear; for each tested product, the nonlinearity of the tested product is calculated according to its output signal in each gear; Put the band switch K2 and the band switch K4 in neutral, turn the band switch K3, and detect the first positive output terminal and the first negative output terminal of each tested product in turn; for each tested product, adjust the voltage value of the input signal through the voltage-stabilized power supply to form multiple input signals with different voltage values, and collect the output signal of each tested product through the first voltmeter and the second voltmeter; Put the band switch K2 and the band switch K3 in neutral, turn the band switch K4, and detect the second positive output terminal and the second negative output terminal of each tested product in turn; for each tested product, adjust the voltage value of the input signal through the voltage-stabilized power supply to form multiple input signals with different voltage values, and collect the output signal of each tested product through the first voltmeter and the second voltmeter.

10. A vibration test method for a multi-channel input and output product according to claim 8, characterized in that: The zero position measurement of the product under test includes: Adjust the band switch K1 to the zero position so that the A1 input terminal, A2 input terminal, B1 input terminal and B2 input terminal are all grounded, read the readings of the first voltmeter and the second voltmeter, if the readings are within the range of the circuit output of the product under test, the product performance is qualified, otherwise it is abnormal.

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