A driving system for controlling dual motors

Abstract

The present application provides a driving system for controlling dual motors, which relates to the field of driving systems. A driving system for controlling dual motors includes a Vcc power supply, a step-down circuit, a processor, a MOS drive commutation circuit, a first motor, a second motor, and a current detection circuit. The output end of the Vcc power supply is connected to the output end of the step-down circuit, the output end of the step-down circuit is electrically connected to the processor, the output end of the MOS drive commutation circuit is electrically connected to the processor, the output end of the MOS drive commutation circuit is electrically connected to the first motor and the second motor, the input end of the current detection circuit is connected to the output end of the MOS drive commutation circuit, and the output end of the current detection circuit is electrically connected to the processor. This circuit uses 6 MOSs to realize forward and reverse rotation and speed regulation of two motors, which can save material costs, reduce PCB wiring space, and realize miniaturization of products.

Description

Technical Field

[0001] The present application relates to the field of drive systems, and in particular, to a drive system for controlling dual motors. Background Art

[0002] The control circuits on the market with MOS bridges to control two motors are all made of 8 MOS + 4 driver chips. The control system is complex and the production cost is high. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a driving system for controlling dual motors, which can solve the above-mentioned technical problems.

[0004] An embodiment of the present application provides a drive system for controlling dual motors, including a Vcc power supply, a step-down circuit, a processor, a MOS drive commutation circuit, a first motor, a second motor, and a current detection circuit, wherein the output end of the Vcc power supply is connected to the output end of the step-down circuit, the output end of the step-down circuit is electrically connected to the processor, the output end of the MOS drive commutation circuit is electrically connected to the processor, the output end of the MOS drive commutation circuit is electrically connected to the first motor and the second motor, the input end of the current detection circuit is connected to the output end of the MOS drive commutation circuit, and the output end of the current detection circuit is electrically connected to the processor.

[0005] Preferably, the MOS drive commutation circuit includes MOS tube U211A, MOS tube U211B, MOS tube U212A, MOS tube U212B, MOS tube U213A, MOS tube U213B, capacitor C1, capacitor C2, capacitor C3, capacitor C4, capacitor C5, capacitor C7, resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6, resistor R7, resistor R8, resistor R9, resistor R10, resistor R11, resistor R12, resistor R13, resistor R14, and resistor R15. The G pole of the MOS tube U211A is connected to the processor through the resistor R5, and the S pole of the MOS tube U211A is connected to the processor through the resistor R4, The capacitor C1 is connected to the G pole of the MOS tube U211A, the D pole of the MOS tube U211A is connected to the D pole of the MOS tube U211B, the S pole of the MOS tube U211B is connected to the G pole of the MOS tube U211B through the capacitor C4, the G pole of the MOS tube U211B is connected to the processor through the resistor R10, the S pole of the MOS tube U211B is connected to the D pole of the MOS tube U211B through the resistor R11, the G pole of the MOS tube U212A is connected to the processor through the resistor R7, the S pole of the MOS tube U212A is connected to the G pole of the MOS tube U212A through the resistor R6 and the capacitor C2 respectively. The D pole of the MOS tube U212A is connected to the D pole of the MOS tube U212B, the S pole of the MOS tube U212B is connected to the G pole of the MOS tube U212B through the capacitor C5, the G pole of the MOS tube U212B is connected to the processor through the resistor R12, the S pole of the MOS tube U212B is connected to the D pole of the MOS tube U212B through the resistor R13, the G pole of the MOS tube U213A is connected to the processor through the resistor R9, the S pole of the MOS tube U213A is connected to the G pole of the MOS tube U213A through the resistor R8 and the capacitor C3 respectively, the D pole of the MOS tube U213A is connected to the The D pole of the MOS tube U213B is connected, the S pole of the MOS tube U213B is connected to the G pole of the MOS tube U213B through the capacitor C7, the G pole of the MOS tube U213B is connected to the processor through the resistor R14, the S pole of the MOS tube U213B is connected to the D pole of the MOS tube U213B through the resistor R15, the S pole of the MOS tube U211B is connected to the ground through the resistor R1, the S pole of the MOS tube U212B is connected to the ground through the resistor R3, and the S pole of the MOS tube U213B is connected to the ground through the resistor R2, one end of the first motor is respectively connected to the D pole of the MOS tube U211A and the D pole of the MOS tube U211B,The other end of the first motor is connected to the D pole of the MOS tube U212A and the D pole of the MOS tube U212B, one end of the second motor is connected to the D pole of the MOS tube U212A and the D pole of the MOS tube U212B, and the other end of the second motor is connected to the D pole of the MOS tube U213A and the D pole of the MOS tube U213B.

[0006] Preferably, the processor is a single-chip microcomputer or a chip.

[0007] Beneficial effects of the utility model:

[0008] The utility model provides a driving system for controlling dual motors, comprising a Vcc power supply, a step-down circuit, a processor, a MOS drive commutation circuit, a first motor, a second motor, and a current detection circuit. The output end of the Vcc power supply is connected to the output end of the step-down circuit, the output end of the step-down circuit is electrically connected to the processor, the output end of the MOS drive commutation circuit is electrically connected to the processor, the output end of the MOS drive commutation circuit is electrically connected to the first motor and the second motor, the input end of the current detection circuit is connected to the output end of the MOS drive commutation circuit, and the output end of the current detection circuit is electrically connected to the processor. This circuit adopts 6 MOS to realize the forward and reverse rotation and speed regulation of two motors, which can save material costs, reduce PCB wiring space, and realize miniaturization of products. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0010] Figure 1 This is a MOS drive commutation circuit diagram of the utility model;

[0011] Figure 2 It is a framework diagram of the utility model; DETAILED DESCRIPTION

[0012] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0013] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0014] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0015] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0016] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0017] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0018] like Figure 1-2As shown, a driving system for controlling dual motors includes a Vcc power supply, a step-down circuit, a processor, a MOS drive commutation circuit, a first motor, a second motor, and a current detection circuit. The output end of the Vcc power supply is connected to the output end of the step-down circuit, the output end of the step-down circuit is electrically connected to the processor, the output end of the MOS drive commutation circuit is electrically connected to the processor, the output end of the MOS drive commutation circuit is electrically connected to the first motor and the second motor, the input end of the current detection circuit is connected to the output end of the MOS drive commutation circuit, and the output end of the current detection circuit is electrically connected to the processor. This circuit uses 6 MOS to realize forward and reverse rotation and speed regulation of two motors, which can save material costs, reduce PCB wiring space, and realize miniaturization of products.

[0019] like Figure 1-2As shown, in this embodiment, the MOS driving commutation circuit includes a MOS tube U211A, a MOS tube U211B, a MOS tube U212A, a MOS tube U212B, a MOS tube U213A, a MOS tube U213B, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C7, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, and a resistor R15. The G pole of the MOS tube U211A is connected to the processor through the resistor R5, and the S pole of the MOS tube U211A is connected to the processor through the resistor R5. R4, the capacitor C1 is connected to the G pole of the MOS tube U211A, the D pole of the MOS tube U211A is connected to the D pole of the MOS tube U211B, the S pole of the MOS tube U211B is connected to the G pole of the MOS tube U211B through the capacitor C4, the G pole of the MOS tube U211B is connected to the processor through the resistor R10, the S pole of the MOS tube U211B is connected to the D pole of the MOS tube U211B through the resistor R11, the G pole of the MOS tube U212A is connected to the processor through the resistor R7, the S pole of the MOS tube U212A is connected to the The G pole of the MOS tube U212A is connected to the D pole of the MOS tube U212B, the S pole of the MOS tube U212B is connected to the G pole of the MOS tube U212B through the capacitor C5, the G pole of the MOS tube U212B is connected to the processor through the resistor R12, the S pole of the MOS tube U212B is connected to the D pole of the MOS tube U212B through the resistor R13, the G pole of the MOS tube U213A is connected to the processor through the resistor R9, the S pole of the MOS tube U213A is connected to the G pole of the MOS tube U213A through the resistor R8 and the capacitor C3 respectively, the D pole of the MOS tube U213A is connected to the processor through the resistor R12, the S pole of the MOS tube U212B is connected to the D pole of the MOS tube U212B through the resistor R13, the G pole of the MOS tube U213A is connected to the processor through the resistor R9, the S pole of the MOS tube U213A is connected to the G pole of the MOS tube U213A through the resistor R8 and the capacitor C3 respectively, the D pole of the MOS tube U213A is connected to the The D pole of the MOS tube U213B is connected, the S pole of the MOS tube U213B is connected to the G pole of the MOS tube U213B through the capacitor C7, the G pole of the MOS tube U213B is connected to the processor through the resistor R14, the S pole of the MOS tube U213B is connected to the D pole of the MOS tube U213B through the resistor R15, the S pole of the MOS tube U211B is connected to the ground through the resistor R1, the S pole of the MOS tube U212B is connected to the ground through the resistor R3, and the S pole of the MOS tube U213B is connected to the ground through the resistor R2, one end of the first motor is connected to the D pole of the MOS tube U211A and the D pole of the MOS tube U211B respectively,The other end of the first motor is connected to the D pole of the MOS tube U212A and the D pole of the MOS tube U212B, one end of the second motor is connected to the D pole of the MOS tube U212A and the D pole of the MOS tube U212B, and the other end of the second motor is connected to the D pole of the MOS tube U213A and the D pole of the MOS tube U213B.

[0020] In this embodiment, the processor is a single-chip microcomputer or a chip.

[0021] like Figure 1-2 As shown, the first motor and the second motor forward rotation circuit:

[0022] When the processor outputs a low level to lower the potential of one end of the R7 resistor, the MOS tube U212A is turned on, and Vcc supplies power to the first motor and the second motor through the MOS tube U212A. When the processor provides a PWM signal to the gate of the MOS tube U211B and the MOS tube U213B through the R10 and R14 resistors, the two tubes are turned on according to the duty cycle. The other end of the first motor and the second motor passes through the MOS tube U211B and the MOS tube U213B to the resistor R1 and the resistor R2 to form a forward loop.

[0023] like Figure 1-2 As shown, the first motor and the second motor reverse circuit:

[0024] When the motor needs to reverse, the processor outputs a high level to R7 to turn off the MOS tube U212A. The processor also outputs a low level to resistors R5 and R9. MOS tubes U212A and U213A are turned on. Vcc is added to the other end of the first motor and the second motor through these two MOS. At this time, the processor provides a PWM signal to the MOS tube U212B through resistor R12 to turn on the MOS tube U212B according to the PWM duty cycle. The first motor and the second motor form a reversing circuit through resistor R3 to the ground.

[0025] Specifically, the Vcc power supply, the step-down circuit, the processor, and the current detection circuit are all existing circuits and will not be repeated here.

[0026] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A driving system for controlling dual motors, characterized in that: It includes a Vcc power supply, a step-down circuit, a processor, a MOS drive commutation circuit, a first motor, a second motor, and a current detection circuit. The output end of the Vcc power supply is connected to the output end of the step-down circuit, the output end of the step-down circuit is electrically connected to the processor, the output end of the MOS drive commutation circuit is electrically connected to the processor, the output end of the MOS drive commutation circuit is electrically connected to the first motor and the second motor, the input end of the current detection circuit is connected to the output end of the MOS drive commutation circuit, and the output end of the current detection circuit is electrically connected to the processor.

2. A dual-motor driving system according to claim 1, characterized in that: The MOS drive commutation circuit includes MOS tube U211A, MOS tube U211B, MOS tube U212A, MOS tube U212B, MOS tube U213A, MOS tube U213B, capacitor C1, capacitor C2, capacitor C3, capacitor C4, capacitor C5, capacitor C7, resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6, resistor R7, resistor R8, resistor R9, resistor R10, resistor R11, resistor R12, resistor R13, resistor R14, and resistor R15. The G pole of the MOS tube U211A is connected to the processor through the resistor R5, and the S pole of the MOS tube U211A is connected to the processor through the resistor R4, the capacitor C3, the capacitor C4, the resistor C5, the resistor C7, the resistor R1, the resistor R2, the resistor R3, the resistor R4, the resistor R5, the resistor R6, the resistor R7, the resistor R8, the resistor R9, the resistor R10, the resistor R11, the resistor R12, the resistor R13, the resistor R14, and the resistor R15. C1 is connected to the G pole of the MOS tube U211A, the D pole of the MOS tube U211A is connected to the D pole of the MOS tube U211B, the S pole of the MOS tube U211B is connected to the G pole of the MOS tube U211B through the capacitor C4, the G pole of the MOS tube U211B is connected to the processor through the resistor R10, the S pole of the MOS tube U211B is connected to the D pole of the MOS tube U211B through the resistor R11, the G pole of the MOS tube U212A is connected to the processor through the resistor R7, and the S pole of the MOS tube U212A is connected to the G pole of the MOS tube U212A through the resistor R6 and the capacitor C2 respectively. The D pole of the MOS tube U212A is connected to the D pole of the MOS tube U212B, the S pole of the MOS tube U212B is connected to the G pole of the MOS tube U212B through the capacitor C5, the G pole of the MOS tube U212B is connected to the processor through the resistor R12, the S pole of the MOS tube U212B is connected to the D pole of the MOS tube U212B through the resistor R13, the G pole of the MOS tube U213A is connected to the processor through the resistor R9, the S pole of the MOS tube U213A is connected to the G pole of the MOS tube U213A through the resistor R8 and the capacitor C3 respectively, the D pole of the MOS tube U213A is connected to the M The D pole of the MOS tube U213B is connected, the S pole of the MOS tube U213B is connected to the G pole of the MOS tube U213B through the capacitor C7, the G pole of the MOS tube U213B is connected to the processor through the resistor R14, the S pole of the MOS tube U213B is connected to the D pole of the MOS tube U213B through the resistor R15, the S pole of the MOS tube U211B is connected to the ground through the resistor R1, the S pole of the MOS tube U212B is connected to the ground through the resistor R3, and the S pole of the MOS tube U213B is connected to the ground through the resistor R2, one end of the first motor is connected to the D pole of the MOS tube U211A and the D pole of the MOS tube U211B respectively,The other end of the first motor is connected to the D pole of the MOS tube U212A and the D pole of the MOS tube U212B, one end of the second motor is connected to the D pole of the MOS tube U212A and the D pole of the MOS tube U212B, and the other end of the second motor is connected to the D pole of the MOS tube U213A and the D pole of the MOS tube U213B.

3. A dual-motor driving system according to claim 1, characterized in that: The processor is a single chip microcomputer or a chip.

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