A high-precision wide-range resolving / synchronizing signal simulation device

Abstract

This invention discloses a high-precision, wide-range analog signal simulation device, comprising an AC-DC power supply circuit, an internal reference generation circuit, an analog signal generation circuit, an internal and external reference in-phase circuit, a signal measurement closed-loop circuit, a touch screen display and operation interface, and signal input / output cables. The device features a wide voltage and frequency range for both the internal reference and analog signals, offering strong applicability; closed-loop processing of analog signal voltage and frequency ensures high signal accuracy; and touch screen operation provides strong human-computer interaction capabilities.

Description

Technical Field

[0001] This invention belongs to the field of solution / synchronization signal simulation technology, and in particular, it is a high-precision wide-range solution / synchronization signal simulation device. Background Technology

[0002] Currently, rotary transformers or synchronous machines are ubiquitous, and can be found in almost any moving object. In the past, product development required the use of different rotary transformers or synchronous machines for different voltages and frequencies, or relied on foreign shaft angle simulation devices. This resulted in a diversity of models, which does not meet my country's requirements for modularization and universalization of various shaft angle signals. On the other hand, excessive reliance on foreign products is not conducive to fundamentally improving the equipment model support capabilities in various fields. Summary of the Invention

[0003] The purpose of this invention is to provide a high-precision, wide-range solution / synchronization signal simulation device to address the problems existing in the prior art.

[0004] The technical solution to achieve the purpose of this invention is: a high-precision wide-range solution / synchronization signal simulation device, the device including an AC-DC power supply circuit, an internal reference generation circuit, a solution / synchronization signal generation circuit, an internal and external reference in-phase circuit, a signal measurement closed-loop circuit, a touch screen display and operation interface, and signal input and output cables;

[0005] The AC-DC power supply circuit is used to convert the 220V AC mains power to +24V DC to power other parts of the device.

[0006] The internal reference generation circuit is used to provide a reference signal for the calculation / synchronization signal generation circuit, and at the same time outputs the internal reference signal through the signal input / output cable.

[0007] The solution / synchronization signal generation circuit is used to generate high-precision, wide-range solution / synchronization analog signals, and simultaneously output analog signals through the signal input / output cable;

[0008] The internal and external reference in-phase circuit is used to receive external reference signals and process the external reference signals and internal reference signals into phase, thereby providing reference signals to the calculation / synchronization signal generation circuit.

[0009] The signal measurement closed-loop circuit is used to measure the voltage and frequency values ​​of the calculated / synchronized analog signal and the internal and external reference signals, and to realize closed-loop processing of the internal reference signal and the analog signal generated by the measurement and calculation / synchronization signal generation circuit.

[0010] The touch screen display and operation interface is used to realize human-machine interaction operation, and at the same time display the measurement values ​​of the signal measurement closed loop circuit, supporting local control and remote serial port control.

[0011] The signal input / output cable is used to receive external reference signals and output calculation / synchronization analog signals, or to output internal reference signals and output calculation / synchronization analog signals.

[0012] Furthermore, the internal reference generation circuit generates an AC reference signal with a voltage of 2V to 115VAC and a frequency of 400Hz to 10000Hz, and both the voltage and frequency are programmable.

[0013] Furthermore, the internal reference generation circuit includes a microprocessor, a first digital-to-analog converter, and an output transformer. The microprocessor controls the first digital-to-analog converter to generate an analog signal, and the output transformer amplifies the analog signal to provide a reference signal for the calculation / synchronization signal generation circuit. Simultaneously, the reference signal is output through a signal input / output cable.

[0014] Furthermore, the calculation / synchronization signal generation circuit generates a calculation / synchronization analog signal with a signal voltage of 2V to 90V AC and a frequency of 400Hz to 10000Hz, and simultaneously outputs two analog signals with pole pairs. The phase of the output analog signal is programmable, and the phase output range is -45° to +45°.

[0015] Further, the decoding / synchronization signal generation circuit consists of a DAC + operational amplifier + power amplifier circuit, including a DAC current output digital-to-analog converter, a second operational amplifier, a first power amplifier, a third power amplifier, a first capacitor to a fourth capacitor, a first diode to a fourth diode, and a first resistor to a second resistor. Pins 9, 10, 11, 15, and 16 of the DAC current output digital-to-analog converter communicate with an external controller via a serial port, converting digital signals into current outputs. Pins 3 and 6 of the DAC current output digital-to-analog converter output current signals are connected to pins 2 and 6 of the second operational amplifier, converting the current signals into voltage signals. Pins 1 and 7 of the second operational amplifier are respectively connected to pins 1 of the third power amplifier and the first power amplifier. The first and third capacitors serve as feedback capacitors for the second operational amplifier, connected between pin 6 of the second operational amplifier and pin 8 of the DAC current output digital-to-analog converter, and between pin 2 of the second operational amplifier and pin 1 of the DAC current output digital-to-analog converter, respectively. Pins 3 and 5 of the second operational amplifier... All terminals are grounded. Pins 4 and 8 of the second operational amplifier are connected to -12V and +12V, respectively. The first diode and the second diode are connected in series, with the anode of the first diode connected to the cathode of the second diode. Their common terminal is connected to pin 6 and the SIN+ output of the first power amplifier. The cathode of the first diode and the anode of the second diode are connected to +12V and -12V, respectively. The third diode and the fourth diode are connected in series, with the cathode of the third diode connected to the anode of the fourth diode. Their common terminal is connected to pin 6 and the COS+ output of the third power amplifier. The anode of the third diode and the cathode of the fourth diode are connected to +12V and -12V, respectively. The two ends of the second capacitor and the fourth capacitor are connected to +12V and -12V, respectively. The two ends of the first resistor are connected to pin 3 and -12V of the first power amplifier, respectively. The two ends of the second resistor are connected to pin 3 and -12V of the third power amplifier, respectively. Pins 2 of the first power amplifier and pin 2 of the third power amplifier are connected to the SIN+ output and the COS+ output, respectively.

[0016] Furthermore, the internal and external reference in-phase circuit includes a third to a sixth resistor, a comparator, and a first programmable gate array; the fifth and sixth resistors, and the third and fourth resistors form a step-down circuit, which steps down the input external reference signal and inputs it into the comparator. The signal output by the comparator enters the first programmable gate array, and after internal processing by the first programmable gate array, the signal is sent to the internal excitation generation circuit.

[0017] Furthermore, the third to sixth resistors are connected in series, with an external reference input connected between the other end of the third resistor and the other end of the sixth resistor. The common terminal of the fourth and fifth resistors is connected to VCC, and the common terminal of the third and fourth resistors, as well as the fifth and sixth resistors, are respectively connected to the positive and negative input terminals of the comparator.

[0018] Furthermore, the signal measurement closed-loop circuit includes a seventh to a tenth resistor, a fifth operational amplifier, a second analog-to-digital converter, and a second programmable gate array. The seventh resistor and the eighth resistor, as well as the ninth resistor and the tenth resistor, form a step-down circuit to step down the external reference signal and input it into the fifth operational amplifier. The signal output by the fifth operational amplifier enters the second analog-to-digital converter, which converts the analog signal into a digital signal and then sends it to the second programmable gate array for data processing.

[0019] Furthermore, the seventh to tenth resistors are connected in series in sequence, and an external reference signal is connected between the other end of the seventh resistor and the other end of the tenth resistor. The common terminal of the eighth and ninth resistors is connected to VCC. The common terminal of the seventh and eighth resistors and the ninth and tenth resistors are respectively connected to the positive input terminal and the negative input terminal of the fifth operational amplifier.

[0020] Furthermore, the touch screen display and operation interface specifically implements the following: displaying the measured reference voltage, signal voltage and frequency, and setting the internal reference voltage, internal reference frequency, signal voltage, internal and external reference selection, phase, switch, step, speed ratio, control mode and angle parameters.

[0021] Compared with the prior art, the significant advantages of this invention are:

[0022] (1) The voltage and frequency range of the internal reference and the solution / synchronization analog signal is wide and the applicability is strong.

[0023] (2) Closed-loop processing of analog signal voltage and frequency ensures high signal accuracy.

[0024] (3) It supports touch screen operation and has strong human-computer interaction capabilities.

[0025] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a high-precision, wide-range solution / synchronization signal simulation device in one embodiment.

[0027] Figure 2 This is a block diagram of the AC-DC power supply circuit of a high-precision wide-range solution / synchronization signal simulation device in one embodiment.

[0028] Figure 3This is a block diagram illustrating the internal reference generation principle of a high-precision, wide-range solution / synchronization signal simulation device in one embodiment.

[0029] Figure 4 This is a circuit diagram of a high-precision, wide-range solution / synchronization signal simulation device for generating solution / synchronization signals in one embodiment.

[0030] Figure 5 This is a block diagram of the internal and external reference in-phase circuit of a high-precision wide-range solution / synchronization signal simulation device in one embodiment.

[0031] Figure 6 This is a block diagram of the signal measurement closed-loop circuit principle of a high-precision wide-range solution / synchronization signal simulation device in one embodiment.

[0032] Figure 7 This is a schematic diagram of the touch screen display and operation interface of a high-precision wide-range solution / synchronization signal simulation device in one embodiment.

[0033] Figure 8 This is a schematic diagram of the signal input and output cables of a high-precision wide-range solution / synchronization signal simulation device in one embodiment. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0035] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0036] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0037] In one embodiment, combined Figure 1A high-precision, wide-range solution / synchronization signal simulation device is provided. The device includes an AC-DC power supply circuit, an internal reference generation circuit, a solution / synchronization signal generation circuit, an internal and external reference in-phase circuit, a signal measurement closed-loop circuit, a touch screen display and operation interface, and signal input / output cables.

[0038] The AC-DC power supply circuit is used to convert the 220V AC mains power to +24V DC to power other parts of the device.

[0039] The internal reference generation circuit is used to provide a reference signal for the calculation / synchronization signal generation circuit, and at the same time outputs the internal reference signal through the signal input / output cable.

[0040] The solution / synchronization signal generation circuit is used to generate high-precision, wide-range solution / synchronization analog signals, and simultaneously output analog signals through the signal input / output cable;

[0041] The internal and external reference in-phase circuit is used to receive external reference signals and process the external reference signals and internal reference signals into phase, thereby providing reference signals to the calculation / synchronization signal generation circuit.

[0042] The signal measurement closed-loop circuit is used to measure the voltage and frequency values ​​of the calculated / synchronized analog signal and the internal and external reference signals; and to realize closed-loop processing of the internal reference signal and the analog signal generated by the measurement and calculation / synchronization signal generation circuit.

[0043] The touch screen display and operation interface is used to realize human-machine interaction operation, and at the same time display the measurement values ​​of the signal measurement closed loop circuit, supporting local control and remote serial port control.

[0044] The signal input / output cable is used to receive external reference signals and output calculation / synchronization analog signals, or to output internal reference signals and output calculation / synchronization analog signals.

[0045] Furthermore, in one embodiment, combined with Figure 2 The AC-DC power supply circuit includes a power input terminal, an EMC filter, a rectifier circuit, a filter circuit, a DC-DC circuit, an output rectifier circuit, a DC output, an output feedback circuit, a control circuit, and finally, a VCC output.

[0046] The internal reference generation circuit generates an AC reference signal with a voltage of 2V to 115VAC and a frequency of 400Hz to 10000Hz, and both the voltage and frequency are programmable.

[0047] Furthermore, in one embodiment, combined with Figure 3The internal reference generation circuit includes a microprocessor U1, a first digital-to-analog converter U2, and an output transformer V1. The microprocessor U1 controls the first digital-to-analog converter U2 to generate an analog signal. The output transformer V1 amplifies the analog signal and provides a reference signal for the calculation / synchronization signal generation circuit. At the same time, it outputs the reference signal through a signal input / output cable.

[0048] The calculation / synchronization signal generation circuit generates a calculation / synchronization analog signal with a signal voltage of 2V to 90VAC and a frequency of 400Hz to 10000Hz. It also outputs two analog signals with pole pairs. The phase of the output analog signal is programmable, with a phase output range of -45° to +45° and an output angular accuracy of up to 0.005°.

[0049] Furthermore, in one embodiment, combined with Figure 4The decoding / synchronization signal generation circuit consists of a DAC + operational amplifier + power amplifier circuit, including a DAC current output digital-to-analog converter D1, a second operational amplifier N2, a first power amplifier N1, a third power amplifier N3, first capacitors C1 to fourth capacitors C4, first diodes V1 to fourth diodes V4, and first resistors R1 to second resistors R2. Pins 9, 10, 11, 15, and 16 of the DAC current output digital-to-analog converter D1 communicate with an external controller via a serial port, converting digital signals into current outputs. Pins 3 and 6 of the DAC current output digital-to-analog converter D1... The output current is connected to pins 2 and 6 of the second operational amplifier N2 to convert the current into a voltage. Pins 1 and 7 of the second operational amplifier N2 are connected to pins 1 of the third power amplifier N3 and the first power amplifier N1, respectively. The first capacitor C1 and the third capacitor C3 serve as feedback capacitors for the second operational amplifier N2 and are connected between pin 6 of the second operational amplifier N2 and pin 8 of the DAC current output digital-to-analog converter D1, and between pin 2 of the second operational amplifier N2 and pin 1 of the DAC current output digital-to-analog converter D1, respectively. Pins 3 and 5 of the second operational amplifier N2 are also connected to pins 2 and 6 of the third power amplifier N2. The first diode V1 is connected to ground, and pins 4 and 8 of the second operational amplifier N2 are connected to -12V and +12V respectively. The first diode V1 and the second diode V2 are connected in series, with the anode of the first diode V1 connected to the cathode of the second diode V2. Their common terminal is connected to pin 6 and the SIN+ output of the first power amplifier N1. The cathode of the first diode V1 and the anode of the second diode V2 are connected to +12V and -12V respectively. The third diode V3 and the fourth diode V4 are connected in series, with the cathode of the third diode V3 connected to the anode of the fourth diode V4. Their common terminal is connected to ground. Pin 6 of the third power amplifier N3 is connected to the COS+ output. The positive terminal of the third diode V3 and the negative terminal of the fourth diode V4 are connected to +12V and -12V, respectively. The two ends of the second capacitor C2 and the fourth capacitor C4 are connected to +12V and -12V, respectively. The two ends of the first resistor R1 are connected to pin 3 of the first power amplifier N1 and -12V, respectively. The two ends of the second resistor R2 are connected to pin 3 of the third power amplifier N3 and -12V, respectively. Pin 2 of the first power amplifier N1 and pin 2 of the third power amplifier N3 are connected to the SIN+ output and the COS+ output, respectively.

[0050] Furthermore, in one embodiment, combined with Figure 5The internal and external reference in-phase circuit includes a third resistor R3 to a sixth resistor R6, a comparator N4, and a first programmable gate array U3. The fifth resistor R5 and the sixth resistor R6, and the third resistor R3 and the fourth resistor R4 form a step-down circuit, which steps down the input external reference signal and inputs it into the comparator N4. The signal output by the comparator N4 enters the first programmable gate array U3. After internal processing by the first programmable gate array U3, the signal is sent to the internal excitation generation circuit.

[0051] The third resistor R3 to the sixth resistor R6 are connected in series. An external reference input is connected between the other end of the third resistor R3 and the other end of the sixth resistor R6. The common terminal of the fourth resistor R4 and the fifth resistor R5 is connected to VCC. The common terminal of the third resistor R3 and the fourth resistor R4, and the fifth resistor R5 and the sixth resistor R6 are respectively connected to the positive input terminal and the negative input terminal of the comparator N4.

[0052] Furthermore, in one embodiment, combined with Figure 6 The signal measurement closed-loop circuit includes resistors R7 to R10, a fifth operational amplifier N5, a second analog-to-digital converter U4, and a second programmable gate array U5. Resistor R7 and resistors R8, and resistors R9 and R10 form a step-down circuit to step down the external reference signal and input it into the fifth operational amplifier N5. The signal output by the fifth operational amplifier N5 enters the second analog-to-digital converter U4, which converts the analog signal into a digital signal and then sends it to the second programmable gate array U5 for data processing.

[0053] The seventh resistor R7 to the tenth resistor R10 are connected in series. An external reference signal is connected between the other end of the seventh resistor R7 and the other end of the tenth resistor R10. The common terminal of the eighth resistor R8 and the ninth resistor R9 is connected to VCC. The common terminal of the seventh resistor R7 and the eighth resistor R8, and the ninth resistor R9 and the tenth resistor R10 are respectively connected to the positive input terminal and the negative input terminal of the fifth operational amplifier N5.

[0054] The closed-loop signal voltage accuracy can reach 1%, and the frequency accuracy can reach 0.1%.

[0055] Furthermore, in one embodiment, combined with Figure 7 The touchscreen display and operation interface specifically implements the following: displaying the measured reference voltage, signal voltage, and frequency; setting the internal reference voltage, internal reference frequency, signal voltage, internal / external reference selection, phase, switch, step, speed ratio, control mode, and angle parameters. The speed ratio setting range is 1–128, the control mode supports local operation and remote serial port operation, and the minimum resolution for angle setting is 0.0001°.

[0056] Furthermore, in one embodiment, combined with Figure 8 The signal input / output cables include an analog signal output cable, an internal reference output cable, and an external reference input cable, which are used to output analog signals, internal reference signals, and external reference signals, respectively.

[0057] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention without departing from its spirit and scope should be included within the protection scope of the present invention.

Claims

1. A high-precision wide-range solution / synchronization signal simulation device, characterized in that, The device includes an AC-DC power supply circuit, an internal reference generation circuit, a solution / synchronization signal generation circuit, an internal and external reference in-phase circuit, a signal measurement closed-loop circuit, a touch screen display and operation interface, and signal input and output cables. The AC-DC power supply circuit is used to convert the 220V AC mains power to +24V DC to power other parts of the device. The internal reference generation circuit is used to provide a reference signal for the calculation / synchronization signal generation circuit, and at the same time outputs the internal reference signal through the signal input / output cable. The solution / synchronization signal generation circuit is used to generate high-precision, wide-range solution / synchronization analog signals, and simultaneously output analog signals through the signal input / output cable; The internal and external reference in-phase circuit is used to receive external reference signals and process the external reference signals and internal reference signals into phase, thereby providing reference signals to the calculation / synchronization signal generation circuit. The signal measurement closed-loop circuit is used to measure the voltage and frequency values ​​of the calculated / synchronized analog signal and the internal and external reference signals, and to realize closed-loop processing of the internal reference signal and the analog signal generated by the measurement and calculation / synchronization signal generation circuit. The touch screen display and operation interface is used to realize human-machine interaction operation, and at the same time display the measurement values ​​of the signal measurement closed loop circuit, supporting local control and remote serial port control. The signal input / output cable is used to receive external reference signals and output calculation / synchronization analog signals, or to output internal reference signals and output calculation / synchronization analog signals. The calculation / synchronization signal generation circuit generates a calculation / synchronization analog signal with a signal voltage of 2V to 90VAC and a frequency of 400Hz to 10000Hz. It also outputs two analog signals with pole pairs, and the phase of the output analog signals is programmable, with a phase output range of -45° to +45°.

2. The high precision wide range resolving / synchronizing signal simulation device according to claim 1, characterized in that The internal reference generation circuit generates an AC reference signal with a voltage of 2V to 115VAC and a frequency of 400Hz to 10000Hz, and both the voltage and frequency are programmable.

3. The high precision wide range resolving / synchronizing signal simulation device according to claim 2, characterized in that The internal reference generation circuit includes a microprocessor (U1), a first digital-to-analog converter (U2), and an output transformer (V1). The microprocessor (U1) controls the first digital-to-analog converter (U2) to generate an analog signal. The output transformer (V1) amplifies the analog signal and provides a reference signal for the calculation / synchronization signal generation circuit. It also outputs the reference signal through a signal input / output cable.

4. The high precision wide range solution / synchronization signal simulation apparatus of claim 1, wherein, The decoding / synchronization signal generation circuit consists of a DAC + operational amplifier + power amplifier circuit, including a DAC current output digital-to-analog converter (D1), a second operational amplifier (N2), a first power amplifier (N1), a third power amplifier (N3), first capacitors (C1) to fourth capacitors (C4), first diodes (V1) to fourth diodes (V4), and first resistors (R1) to second resistors (R2). Pins 9, 10, 11, 15, and 16 of the DAC current output digital-to-analog converter (D1) communicate with an external controller via a serial port, converting digital signals into current output. Pins 3 and 6 of the DAC current output digital-to-analog converter (D1) output... The output current is connected to pins 2 and 6 of the second operational amplifier (N2) to convert the current into a voltage. Pins 1 and 7 of the second operational amplifier (N2) are connected to pins 1 of the third power amplifier (N3) and the first power amplifier (N1), respectively. The first capacitor (C1) and the third capacitor (C3) serve as feedback capacitors for the second operational amplifier (N2) and are connected between pin 6 of the second operational amplifier (N2) and pin 8 of the DAC current output digital-to-analog converter (D1), and between pin 2 of the second operational amplifier (N2) and pin 1 of the DAC current output digital-to-analog converter (D1), respectively. Pins 3 and 5 of the second operational amplifier (N2) All are grounded. Pins 4 and 8 of the second operational amplifier (N2) are connected to -12V and +12V, respectively. The first diode (V1) and the second diode (V2) are connected in series, with the anode of the first diode (V1) connected to the cathode of the second diode (V2). Their common terminal is connected to pin 6, the SIN+ output of the first power amplifier (N1). The cathode of the first diode (V1) and the anode of the second diode (V2) are connected to +12V and -12V, respectively. The third diode (V3) and the fourth diode (V4) are connected in series, with the cathode of the third diode (V3) connected to the anode of the fourth diode (V4). Their common terminal is... The third power amplifier (N3) is connected to pin 6 and the COS+ output. The positive terminal of the third diode (V3) and the negative terminal of the fourth diode (V4) are connected to +12V and -12V, respectively. The two ends of the second capacitor (C2) and the fourth capacitor (C4) are connected to +12V and -12V, respectively. The two ends of the first resistor (R1) are connected to pin 3 and -12V of the first power amplifier (N1), respectively. The two ends of the second resistor (R2) are connected to pin 3 and -12V of the third power amplifier (N3), respectively. Pin 2 of the first power amplifier (N1) and pin 2 of the third power amplifier (N3) are connected to the SIN+ output and the COS+ output, respectively.

5. The high precision wide range solution / synchronization signal simulation apparatus of claim 1, wherein, The internal and external reference in-phase circuit includes a third resistor (R3) to a sixth resistor (R6), a comparator (N4), and a first programmable gate array (U3). The fifth resistor (R5) and the sixth resistor (R6), and the third resistor (R3) and the fourth resistor (R4) form a step-down circuit, which steps down the input external reference signal and inputs it into the comparator (N4). The signal output by the comparator (N4) enters the first programmable gate array (U3), and after internal processing by the first programmable gate array (U3), the signal is sent to the internal excitation generation circuit.

6. The high precision wide range solution / synchronization signal simulation apparatus of claim 5, wherein, The third resistor (R3) to the sixth resistor (R6) are connected in series. An external reference input is connected between the other end of the third resistor (R3) and the other end of the sixth resistor (R6). The common terminal of the fourth resistor (R4) and the fifth resistor (R5) is connected to VCC. The common terminal of the third resistor (R3) and the fourth resistor (R4), and the fifth resistor (R5) and the sixth resistor (R6) are respectively connected to the positive input terminal and the negative input terminal of the comparator (N4).

7. The high precision wide range solution / synchronization signal simulation apparatus of claim 1, wherein The signal measurement closed-loop circuit includes resistors 7 to 10 (R10), a fifth operational amplifier (N5), a second analog-to-digital converter (U4), and a second programmable gate array (U5). The seventh resistor (R7) and the eighth resistor (R8), and the ninth resistor (R9) and the tenth resistor (R10) form a step-down circuit to step down the external reference signal and input it into the fifth operational amplifier (N5). The signal output by the fifth operational amplifier (N5) enters the second analog-to-digital converter (U4), which converts the analog signal into a digital signal and then sends it to the second programmable gate array (U5) for data processing.

8. The high precision wide range solution / synchronization signal simulation apparatus of claim 7, wherein, The seventh resistor (R7) to the tenth resistor (R10) are connected in series. An external reference signal is connected between the other end of the seventh resistor (R7) and the other end of the tenth resistor (R10). The common terminal of the eighth resistor (R8) and the ninth resistor (R9) is connected to VCC. The common terminal of the seventh resistor (R7) and the eighth resistor (R8), and the ninth resistor (R9) and the tenth resistor (R10) are respectively connected to the positive input terminal and the negative input terminal of the fifth operational amplifier (N5).

9. The high precision wide range solution / synchronization signal simulation apparatus of claim 1, wherein, The touchscreen display and operation interface specifically implements the following: displaying the measured reference voltage, signal voltage and frequency; setting the internal reference voltage, internal reference frequency, signal voltage, internal and external reference selection, phase, switch, step, speed ratio, control mode and angle parameters.

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