Astronavigation multi-gear integrated motor speed regulation circuit

Abstract

A space navigation multi-gear integrated motor speed regulation circuit is characterized in that a given negative pulse signal is isolated, converted and filtered and then is converted into two output signals by a trigger, the two output signals are combined in pairs to form four different combined signals, and the combined signals control a data selection circuit. The control function of four groups of electronic switches is achieved, four different direct-current voltages are connected, and reliable control over the rotating speed of four gears of the motor is achieved. Signal conversion is achieved through conventional and common electronic components, various different direct-current voltage signals are controlled to be communicated with the motor control integrated module, and the motor control integrated module is applied to various types of products of a space station, has wide practicability and is suitable for the field of high-reliability motor control application of space navigation.

Description

Technical Field

[0001] The invention belongs to the technical field of motor control, and in particular relates to an aerospace multi-speed integrated motor speed regulation circuit. Background Art

[0002] In the field of motor speed control technology, existing methods have many limitations and are difficult to meet the complex and ever-changing application scenarios, especially the extreme aerospace application environment that requires extremely high reliability and flexibility. The traditional potentiometer speed control method is easily affected by environmental factors such as temperature, humidity and vibration due to the characteristics of the potentiometer itself, which greatly reduces its stability and reliability in the aerospace environment and makes it difficult to adapt to such extreme application scenarios. Another common switch speed control method is simple and direct to operate, but it lacks flexibility. Each speed gear needs to be configured with a separate switch. If multiple speeds are to be achieved, a large number of switches must be equipped, which not only increases the complexity and cost of the system, but also reduces the overall reliability and maintainability.

[0003] The shortcomings of these existing technologies urgently require an innovative motor speed control solution to meet the stringent requirements of motor control in terms of flexibility, reliability and stability in high-reliability application fields such as aerospace. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an aerospace multi-speed integrated motor speed regulation circuit. The aerospace multi-speed integrated motor speed regulation circuit isolates and converts a given negative pulse signal, and after filtering, converts it into two output signals by a trigger. The two output signals can be combined in pairs to form four different combination signals. The data selection circuit is controlled by the combination signal to realize four groups of electronic switch control functions, connect four different DC voltages, and realize reliable control of the motor's four gear speeds.

[0005] The present invention is achieved through the following technical solutions.

[0006] The present invention provides an aerospace multi-gear integrated motor speed regulation circuit, comprising a photoelectric coupler D1, Schmitt triggers U2A and U2B, a trigger U5, a data selector U6, resistors R5-R12, a capacitor C2 and a motor drive chip U1, wherein the third pin of the photoelectric coupler D1 is connected to a power supply, the fourth pin is connected to an externally input negative pulse signal MCXH, the first pin is connected to an input end of the Schmitt trigger U2A, the second pin is grounded, the input end of the Schmitt trigger U2B is connected to a power supply and one end of the capacitor C2, and the other end of the capacitor C2 is grounded; the trigger U5 uses a CC4027 chip, the third pin is connected to the output end of the Schmitt trigger U2A, the fourth pin and the 12th pin are connected to the output end of the Schmitt trigger U2B, the first pin is connected to a signal output end SW2, the 15th pin is connected to a signal output end SW1, the second pin is connected to the 13th pin, the fifth, sixth, tenth, eleventh and sixth pins are connected to the power supply, the seventh, eighth and ninth pins are connected to the power supply, and the eighth, eighth and ninth pins are connected to the power supply. pin is grounded; one end of the resistors R5, R7, R9, and R11 is connected to the power supply, the data selector U6 uses the CC4052 chip, the 10th pin thereof is connected to the signal output terminal SW1, the 9th pin is connected to the signal output terminal SW2, the 12th pin is connected to the other end of the resistor R5 and one end of the resistor R6, the 14th pin is connected to the other end of the resistor R7 and one end of the resistor R8, the 14th pin is connected to the other end of the resistor R9 and one end of the resistor R10, the 15th pin is connected to the other end of the resistor R11 and one end of the resistor R12, the other ends of the resistors R6, R8, R10, and R12 and the 1st, 2nd, 4th, 5th, 6th, and 7th pins of the data selector U6 are grounded, and the 16th pin of the data selector U6 is connected to the power supply; the motor drive chip U1 uses the LHKF10006 chip, the 4th pin thereof is connected to the ground pin 13 of the data selector U6, and the 17th, 18th, and 19th pins are respectively connected to the C, B, and A control ends of the controlled motor.

[0007] A resistor R1 is also included, one end of the resistor R1 is connected to the power supply, and the other end of the resistor R1 is connected to the third pin of the photocoupler D1.

[0008] It also includes resistors R2, R3 and a capacitor C1, one end of the resistor R2 is connected to the power supply, and the other end is connected to the first pin of the photocoupler D1 and one end of the resistor R3, one end of the capacitor C1 is connected to the power supply, and the other end of the resistor R3 is connected to the input end of the Schmitt trigger U2A and the other end of the capacitor C1.

[0009] A capacitor C2 is also included, one end of the capacitor C2 is connected to the input end of the Schmitt trigger U2B, and the other end is grounded.

[0010] It also includes resistors R13, R14 and a capacitor C3, one end of the resistor R13 is connected to the 13th pin of the data selector U6, the other end is connected to one end of the capacitor C3 and one end of the resistor R14, the other end of the capacitor C3 is grounded, and the other end of the resistor R14 is connected to the 4th pin of the motor driver chip U1.

[0011] The 10th pin of the motor driver chip U1 is connected to the HC output terminal of the Hall signal of the controlled motor. The 11th pin of the motor driver chip U1 is connected to the HB output terminal of the Hall signal of the controlled motor. The 12th pin of the motor driver chip U1 is connected to the HA output terminal of the Hall signal of the controlled motor.

[0012] The Schmitt triggers U2A and U2B use the CC40106 chip.

[0013] The beneficial effects of the present invention are as follows: the present invention uses a single pulse signal to make the trigger generate a combination signal, control the data selector, and generate four different DC voltage signals. The DC voltage signal generated by the initial power-on slowly rises after a resistor-capacitor delay, controls the motor to slowly rise, and plays a soft start role; at the same time, the external signal is isolated by a photoelectric coupler to avoid mutual interference of signals; in addition, the filter circuit and reset circuit composed of resistor-capacitor devices of the present invention improve the reliability of circuit operation. Finally, the present invention realizes signal conversion through conventional and commonly used electronic components, controls a variety of different DC voltage signals to connect to the motor control integrated module, and has been applied to various products of the space station. It has wide practicality and is suitable for the application field of high-reliability motor control in aerospace. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the circuit composition structure of the present invention. DETAILED DESCRIPTION

[0015] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0016] like Figure 1As shown, an aerospace multi-speed integrated motor speed control circuit of the present invention includes a photoelectric coupler D1, Schmitt triggers U2A and U2B, a trigger U5, a data selector U6, resistors R5-R12, a capacitor C2 and a motor drive chip U1, the third pin of the photoelectric coupler D1 is connected to a power supply, the fourth pin is connected to an externally input negative pulse signal MCXH, the first pin is connected to the input end of the Schmitt trigger U2A, the second pin is grounded, the input end of the Schmitt trigger U2B is connected to the power supply and one end of the capacitor C2, and the other end of the capacitor C2 is grounded; the trigger U5 uses a CC4027 chip, the third pin is connected to the output end of the Schmitt trigger U2A, the fourth pin and the 12th pin are connected to the output end of the Schmitt trigger U2B, the first pin is connected to the signal output end SW2, the 15th pin is connected to the signal output end SW1, the second pin is connected to the 13th pin, the 5th, 6th, 10th, 11th, and 16th pins are connected to the power supply, and the 7th, 8th, Pin 9 is grounded; one end of resistors R5, R7, R9, and R11 is connected to the power supply, the data selector U6 uses the CC4052 chip, its 10th pin is connected to the signal output terminal SW1, the 9th pin is connected to the signal output terminal SW2, the 12th pin is connected to the other end of resistor R5 and one end of resistor R6, the 14th pin is connected to the other end of resistor R7 and one end of resistor R8, the 14th pin is connected to the other end of resistor R9 and one end of resistor R10, the 15th pin is connected to the other end of resistor R11 and one end of resistor R12, the other ends of resistors R6, R8, R10, and R12 and pins 1, 2, 4, 5, 6, and 7 of the data selector U6 are grounded, and the 16th pin of the data selector U6 is connected to the power supply; the motor drive chip U1 uses the LHKF10006 chip, its 4th pin is connected to the ground pin 13 of the data selector U6, and the 17th, 18th, and 19th pins are respectively connected to the C, B, and A control ends of the controlled motor. It also includes a resistor R1, one end of which is connected to the power supply, and the other end is connected to the 3rd pin of the photoelectric coupler D1. It also includes resistors R2, R3 and capacitor C1, one end of which is connected to the power supply, and the other end is connected to the 1st pin of the photoelectric coupler D1 and one end of the resistor R3, one end of the capacitor C1 is connected to the power supply, and the other end of the resistor R3 is connected to the input end of the Schmitt trigger U2A and the other end of the capacitor C1. It also includes a capacitor C2, one end of the capacitor C2 is connected to the input end of the Schmitt trigger U2B, and the other end is grounded. It also includes resistors R13, R14 and capacitor C3, one end of the resistor R13 is connected to the 13th pin of the data selector U6, the other end is connected to one end of the capacitor C3 and one end of the resistor R14, the other end of the capacitor C3 is grounded, and the other end of the resistor R14 is connected to the 4th pin of the motor drive chip U1. The 10th pin of the motor drive chip U1 is connected to the Hall signal HC output end of the controlled motor. The 11th pin of the motor drive chip U1 is connected to the Hall signal HB output end of the controlled motor.The 12th pin of the motor driver chip U1 is connected to the output terminal of the Hall signal HA of the controlled motor. The Schmitt triggers U2A and U2B use the CC40106 chip.

[0017] When working, the negative pulse signal MCXH input from the outside outputs a pulse signal of the same phase through the photoelectric coupler D1. The photoelectric coupler D1 plays a role of signal isolation. The converted signal is filtered by R3 and C1 and then shaped by the Schmitt trigger U2A (CC40106). The shaped pulse signal is used as the input of the trigger U5 (CC4027), and the output Q1 (SW2) and Q2 (SW1) signals are generated to generate four combination data of 00, 01, 10, and 11, which respectively control The inputs X0(A), X1(B), X2(C), and X3(D) of the data selector U6 (CC4052) are connected to the output X. The four input DC signals X0(A), X1(B), X2(C), and X3(D) are generated by the resistor voltage dividers R5 / R6, R7 / R8, R9 / R10, and R11 / R12, respectively. Four sets of DC signals with different voltages are used to control the motor control module, so that the motor generates four different gear speeds and realizes multi-gear speed control. When the control circuit is powered on, the trigger U5 combines the signals Q1Q2 to output the initial state data (00), controls the input X0 (A path) of the data selector U6 to be connected to the output X, and delays through the resistors and capacitors R13 and C3, so that the signal slowly rises to the rated value. In this process, the motor speed slowly rises to the rated speed, thereby playing the role of motor soft start.

Claims

1. An aerospace multi-speed integrated motor speed control circuit, characterized in that: Including photocoupler D1, Schmitt trigger U2A and U2B, trigger U5, data selector U6, resistors R5~R12, capacitor C2 and motor driver chip U1, The third pin of the photocoupler D1 is connected to the power supply, the fourth pin is connected to the external input negative pulse signal MCXH, the first pin is connected to the input end of the Schmitt trigger U2A, the second pin is grounded, the input end of the Schmitt trigger U2B is connected to the power supply and one end of the capacitor C2, and the other end of the capacitor C2 is grounded; The trigger U5 uses a CC4027 chip, the 3rd pin is connected to the output end of the Schmitt trigger U2A, the 4th pin and the 12th pin are connected to the output end of the Schmitt trigger U2B, the 1st pin is connected to the signal output end SW2, the 15th pin is connected to the signal output end SW1, the 2nd pin is connected to the 13th pin, the 5th, 6th, 10th, 11th and 16th pins are connected to the power supply, and the 7th, 8th and 9th pins are grounded; One end of the resistors R5, R7, R9, and R11 is connected to a power supply, the data selector U6 uses a CC4052 chip, the 10th pin thereof is connected to the signal output terminal SW1, the 9th pin is connected to the signal output terminal SW2, the 12th pin is connected to the other end of the resistor R5 and one end of the resistor R6, the 14th pin is connected to the other end of the resistor R7 and one end of the resistor R8, the 14th pin is connected to the other end of the resistor R9 and one end of the resistor R10, the 15th pin is connected to the other end of the resistor R11 and one end of the resistor R12, the other ends of the resistors R6, R8, R10, and R12 and the 1st, 2nd, 4th, 5th, 6th, and 7th pins of the data selector U6 are grounded, and the 16th pin of the data selector U6 is connected to a power supply; The motor driving chip U1 uses a LHKF10006 chip, the 4th pin of which is connected to the ground 13th pin of the data selector U6, and the 17th, 18th and 19th pins are respectively connected to the C, B and A control terminals of the controlled motor.

2. The aerospace multi-speed integrated motor speed control circuit according to claim 1, characterized in that: A resistor R1 is also included, one end of the resistor R1 is connected to the power supply, and the other end of the resistor R1 is connected to the third pin of the photocoupler D1.

3. The aerospace multi-speed integrated motor speed control circuit according to claim 1, characterized in that: It also includes resistors R2, R3 and a capacitor C1, one end of the resistor R2 is connected to the power supply, and the other end is connected to the first pin of the photocoupler D1 and one end of the resistor R3, one end of the capacitor C1 is connected to the power supply, and the other end of the resistor R3 is connected to the input end of the Schmitt trigger U2A and the other end of the capacitor C1.

4. The aerospace multi-speed integrated motor speed control circuit according to claim 1, characterized in that: A capacitor C2 is also included, one end of the capacitor C2 is connected to the input end of the Schmitt trigger U2B, and the other end is grounded.

5. The aerospace multi-speed integrated motor speed control circuit according to claim 1, characterized in that: It also includes resistors R13, R14 and a capacitor C3, one end of the resistor R13 is connected to the 13th pin of the data selector U6, the other end is connected to one end of the capacitor C3 and one end of the resistor R14, the other end of the capacitor C3 is grounded, and the other end of the resistor R14 is connected to the 4th pin of the motor driver chip U1.

6. The aerospace multi-speed integrated motor speed control circuit according to claim 1, characterized in that: The 10th pin of the motor driving chip U1 is connected to the Hall signal HC output end of the controlled motor.

7. The aerospace multi-speed integrated motor speed control circuit according to claim 1, characterized in that: The 11th pin of the motor driving chip U1 is connected to the Hall signal HB output end of the controlled motor.

8. The aerospace multi-speed integrated motor speed control circuit according to claim 1, characterized in that: The 12th pin of the motor driving chip U1 is connected to the Hall signal HA output end of the controlled motor.

9. The aerospace multi-speed integrated motor speed control circuit according to claim 1, characterized in that: The Schmitt triggers U2A and U2B use the CC40106 chip.

Images