Switching speed regulation circuit
By coordinating the control module, adjustment module, and speed-up module of the switching speed regulation circuit, the problem of low high-speed stability of the motor at different frequencies is solved, and the high-speed regulation of the motor speed is achieved quickly, stably, and reliably.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG ZHONGXUN ELECTRONICS
- Filing Date
- 2025-08-26
- Publication Date
- 2026-07-24
AI Technical Summary
When existing technologies rapidly achieve high speeds at different frequencies, the motor exhibits low stability and instability.
The circuit employs a switching speed control circuit, including a control module, an adjustment module, a speed-up switch, and a speed-up module. The speed-up switch receives a preset operation signal and outputs a speed-up control signal, while the adjustment module directly increases the motor speed.
It achieves rapid, stable, and reliable high-speed regulation of motor speed, improving the convenience and stability of acceleration.
Smart Images
Figure CN224555503U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of motor technology, and in particular to switching speed control circuits. Background Technology
[0002] With the development of technology, motors have been widely used. Among them, switching speed control circuits are used to regulate the speed of motors. However, existing technologies can quickly achieve high speeds at different frequencies, but their stability is low and unstable. Utility Model Content
[0003] This application provides a switching speed control circuit to at least solve the problem of low stability and instability in adjusting high speed at different frequencies in related technologies.
[0004] This application provides a switching speed control circuit, including:
[0005] A control module, which is connected to the motor, is used to output a motor speed adjustment signal;
[0006] An adjustment module, which is connected to both the control module and the motor, is used to receive adjustment signals and adjust the motor speed.
[0007] Speed-up switch, which is connected to the control module, is used to receive and output speed-up signals based on preset operations;
[0008] The speed-up module is connected to the speed-up switch, the control module, and the adjustment module respectively. After receiving the speed-up signal, it outputs a speed-up control signal so that the adjustment module increases the motor speed by a preset speed after receiving the speed-up control signal.
[0009] This application provides a switch-based speed control circuit, in which a speed-up module is connected to a speed-up switch, an adjustment module, and a control module. The speed-up switch receives a speed-up signal based on a preset operation and outputs it to the speed-up module. The speed-up module outputs a speed-up control signal, and the adjustment module directly increases the motor speed to a preset speed. This significantly improves the convenience of speed increase.
[0010] In some feasible implementations, the speed-up module includes:
[0011] The voltage divider resistor has its first end connected to both the control module and the adjustment module, and its second end connected to the speed-up switch.
[0012] In some feasible implementations, the adjustment module includes:
[0013] A bidirectional diode, the first end of which is connected to the control module and the voltage divider resistor respectively;
[0014] A bidirectional thyristor, wherein the control terminal of the bidirectional thyristor is connected to the second terminal of the bidirectional diode, the first terminal of the bidirectional thyristor is connected to the control module and the first power supply terminal respectively, and the second terminal of the bidirectional thyristor is connected to the motor;
[0015] The second end of the motor is connected to the second power supply end.
[0016] In some feasible implementations, the adjustment module further includes:
[0017] A first resistor, wherein a first end of the first resistor is connected to a second end of the bidirectional diode, and a second end of the first resistor is connected to a first power supply terminal;
[0018] A first capacitor, the first end of which is connected to the first end of the bidirectional diode, and the second end of which is connected to the first power supply terminal.
[0019] In some feasible implementations, the control module includes:
[0020] A rectifier bridge, wherein the first end of the rectifier bridge is connected to the adjustment module and the speed-up module respectively, the second end of the rectifier bridge is connected to the first power supply terminal, the third end of the rectifier bridge is connected to the motor, and the fourth end of the rectifier bridge is connected to the motor.
[0021] The second resistor has its first end connected to the first end of the rectifier bridge;
[0022] An adjustable resistor, wherein a first end of the adjustable resistor is connected to a second end of a second resistor, the second end of the adjustable resistor is connected to the motor, and the adjustable resistor includes a plurality of third resistors.
[0023] In some feasible implementations, the control module further includes:
[0024] The fourth resistor has its first end connected to the third end of the rectifier bridge and its second end connected to the motor.
[0025] The fifth resistor has its first end connected to the fourth end of the rectifier bridge and its second end connected to the motor.
[0026] In some feasible embodiments, the switching speed control circuit further includes:
[0027] A mechanical switch, wherein the first end of the mechanical switch is connected to the second end of the rectifier bridge, the second end of the mechanical switch is connected to the first power supply end, and the control end of the mechanical switch is connected to the adjustable resistor.
[0028] In some feasible embodiments, the switching speed control circuit further includes:
[0029] The second capacitor has a first terminal connected to the second terminal of the mechanical switch and a second terminal connected to the second power supply terminal.
[0030] The sixth resistor has its first end connected to the second end of the mechanical switch, and its second end connected to the second power supply terminal.
[0031] In some feasible embodiments, the switching speed control circuit further includes:
[0032] A varistor, wherein the first end of the varistor is connected to the second end of the mechanical switch, and the second end of the varistor is connected to the second power supply terminal;
[0033] The third capacitor has its first terminal connected to the first terminal of the mechanical switch and its second terminal connected to the motor.
[0034] In some feasible embodiments, the switching speed control circuit further includes:
[0035] A fuse, wherein the first end of the fuse is connected to the second end of the mechanical switch, and the second end of the fuse is connected to the first power supply terminal. Attached Figure Description
[0036] To more clearly illustrate the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0037] Figure 1 This is a schematic diagram of a switching speed control circuit provided in an embodiment of this application. Detailed Implementation
[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.
[0039] It should be noted that, in the description of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. The terms "first," "second," etc., in this application are used to distinguish similar objects and are not used to describe a specific order or sequence.
[0040] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0041] With the development of technology, motors have been widely used. Among them, switching speed control circuits are used to regulate the speed of motors. However, existing technologies can quickly achieve high speeds at different frequencies, but their stability is low and unstable.
[0042] An embodiment of this application provides a switching speed control circuit, including:
[0043] Control module 10, which is connected to motor M, is used to output a motor speed adjustment signal;
[0044] The adjustment module 20 is connected to the control module 10 and the motor M respectively, and is used to receive adjustment signals and adjust the speed of the motor M;
[0045] Speed-up switch T, which is connected to the control module 10, is used to receive and output speed-up signals based on preset operations.
[0046] Speed-up module 30 is connected to speed-up switch T, control module 10 and adjustment module 20 respectively. After receiving speed-up signal, speed-up control signal is output so that adjustment module 20 increases the speed of motor M by a preset speed after receiving speed-up control signal.
[0047] Specifically, the speed-up switch T can be a tactile switch, which directly triggers the speed-up signal upon pressing. The control module 10 outputs adjustment signals with multiple preset levels, which can be levels that sequentially increase the speed. After the speed-up switch T outputs the speed-up signal, the speed-up module 30 directly increases the speed of the motor, that is, it increases the preset speed based on the current speed level. It is worth noting that the preset speed increase is different for different levels. Thus, by pressing the speed-up switch T, the speed can be directly increased based on the current speed, thereby greatly improving the convenience of speed-up. Optionally, the adjustment module 20 can be a device with control. The control module 10 and the speed-up module 30 increase the speed of the motor M by controlling the current of the adjustment module 20. The preset speed is greater than or equal to the speed of each level of the control module 10.
[0048] Specifically, speed can be increased with a single button press of the speed-up switch T, allowing for one-button acceleration at various speed levels. Compared to adjusting via control module 10, this method is more convenient, provides faster speed increases, and offers higher stability and reliability. To quickly achieve high speeds, simply press the speed-up switch T. This method offers greater precision, stability, sensitivity, and reliability compared to traditional motor speed control.
[0049] This application provides a switch-based speed control circuit, in which a speed-up module 30 is connected to a speed-up switch T, an adjustment module 20, and a control module 10. The speed-up switch T receives a speed-up signal based on a preset operation and outputs it to the speed-up module 30. The speed-up module 30 outputs a speed-up control signal, and the adjustment module 20 directly increases the speed of the motor M to a preset speed. This greatly improves the convenience of speed-up.
[0050] In some feasible implementations, such as Figure 1 As shown, the speed-up module 30 includes:
[0051] The voltage divider resistor R0 has its first end connected to the control module 10 and the adjustment module 20, and its second end connected to the speed-up switch T.
[0052] Optionally, the control module 10 includes an adjustable resistor. Specifically, when the speed-up switch T is turned on, the voltage divider resistor R0 is connected in parallel with the adjustable resistor, thereby reducing the resistance and increasing the current, achieving the purpose of directly increasing the current speed to a preset speed.
[0053] In some feasible implementations, such as Figure 1 As shown, the adjustment module 20 includes:
[0054] A bidirectional diode D1, the first end of which is connected to the control module 10 and the voltage divider resistor R0 respectively;
[0055] A bidirectional thyristor U1 is provided, wherein the control terminal of the bidirectional thyristor U1 is connected to the second terminal of the bidirectional diode D1, the first terminal of the bidirectional thyristor U1 is connected to the control module 10 and the first power supply terminal respectively, and the second terminal of the bidirectional thyristor U1 is connected to the motor M.
[0056] The second end of the motor M is connected to the second power supply end.
[0057] Specifically, the power supply is an AC power supply. The first power supply is ACL, and the second power supply is ADN.
[0058] Specifically, when the speed-up switch T is turned on, the voltage divider resistor R0 is connected in parallel with the resistor unit, thereby reducing the resistance and increasing the current, which in turn increases the current at the control terminal (G terminal) of the bidirectional thyristor U1, allowing a larger current to flow through the bidirectional thyristor U1 and a faster speed for the motor M. The bidirectional diode D1 makes the conduction smoother.
[0059] In some feasible implementations, the adjustment module 20 further includes:
[0060] A first resistor R1, the first end of which is connected to the second end of the bidirectional diode D1, and the second end of which is connected to the first power supply terminal;
[0061] A first capacitor C1 is connected at its first end to the first end of the bidirectional diode D1, and at its second end to the first power supply terminal.
[0062] Specifically, the first resistor R1 and the first capacitor C1 form an RC circuit, which mainly suppresses electromagnetic interference and provides a stable waveform for the control electrode of the bidirectional thyristor U1.
[0063] In some feasible implementations, the control module 10 includes:
[0064] The rectifier bridge U2 has its first end connected to the adjustment module 20 and the speed-up module 30, its second end connected to the first power supply terminal, its third end connected to the motor M, and its fourth end connected to the motor M.
[0065] The second resistor R2, the first end of which is connected to the first end of the rectifier bridge U2;
[0066] An adjustable resistor VR, the first end of which is connected to the second end of the second resistor R2, the second end of which is connected to the motor M, and the adjustable resistor VR includes a plurality of third resistors R3.
[0067] Specifically, the rectifier bridge U2 is used to convert alternating current (AC) to direct current (DC). (Reference) Figure 1 The adjustable resistor VR can include five third resistors R3, each with a different resistance value. Any one of the third resistors R3 in the adjustable resistor VR is connected to a second resistor R2, forming one level. Different third resistors R3 connected to the second resistor R2 form different levels.
[0068] Specifically, a voltage divider resistor R0 is directly connected in parallel with the third resistor R3 at the current rotational speed, which directly reduces the resistance and increases the current. It should be noted that the voltage divider resistor R0 has a relatively large resistance value, which is greater than a preset resistance value, or the voltage divider resistor R0 is greater than any of the third resistors R3.
[0069] In some feasible implementations, the control module 10 further includes:
[0070] The fourth resistor R4 has its first end connected to the third end of the rectifier bridge U2, and its second end connected to the motor M.
[0071] The fifth resistor R5 has its first end connected to the fourth end of the rectifier bridge and its second end connected to the motor M.
[0072] Specifically, the fourth resistor R4 and the fifth resistor R5 serve as protective resistors.
[0073] In some feasible implementations, the switching speed control circuit further includes:
[0074] Mechanical switch K1, the first end of which is connected to the second end of the rectifier bridge U2, the second end of which is connected to the first power supply end, and the control end of which is connected to the adjustable resistor VR.
[0075] Specifically, the adjustable resistor VR also includes a disconnect position. When the disconnect position is activated, the adjustable resistor VR outputs a disconnect signal to the mechanical switch K1. After receiving the disconnect signal, the mechanical switch K1 disconnects the second terminal of the rectifier bridge U2 from the first power supply terminal, thereby stopping the rotation of the motor M.
[0076] In some feasible implementations, the switching speed control circuit further includes:
[0077] The second capacitor C2 has its first end connected to the second end of the mechanical switch K1, and its second end connected to the second power supply terminal.
[0078] The sixth resistor R6 has its first end connected to the second end of the mechanical switch K1, and its second end connected to the second power supply terminal.
[0079] Specifically, the second capacitor C2 is a safety capacitor, connected across the power supply to suppress electromagnetic interference (EMI). The sixth resistor R6, connected in parallel with the second capacitor C2, discharges the charge from the second capacitor C2, protecting personnel and electrical components.
[0080] In some feasible implementations, the switching speed control circuit further includes:
[0081] A varistor MOV, wherein the first end of the varistor MOV is connected to the second end of the mechanical switch K1, and the second end of the varistor MOV is connected to the second power supply terminal;
[0082] Specifically, the varistor MOV performs voltage clamping and surge absorption in the circuit, thereby protecting the downstream circuitry.
[0083] The third capacitor C3 has its first end connected to the first end of the mechanical switch K1, and its second end connected to the motor M.
[0084] Specifically, the third capacitor C3 is used to absorb high-frequency interference in the circuit.
[0085] In some feasible implementations, the switching speed control circuit further includes:
[0086] Fuse FU1, the first end of which is connected to the second end of the mechanical switch K1, and the second end of fuse FU1 is connected to the first power supply terminal.
[0087] The foregoing has provided a detailed description of a switching speed control circuit provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this application.
Claims
1. A switching speed control circuit, characterized in that, include: A control module, which is connected to the motor, is used to output a motor speed adjustment signal; An adjustment module, which is connected to both the control module and the motor, is used to receive adjustment signals and adjust the motor speed. Speed-up switch, which is connected to the control module, is used to receive and output speed-up signals based on preset operations; The speed-up module is connected to the speed-up switch, the control module, and the adjustment module respectively. After receiving the speed-up signal, it outputs a speed-up control signal so that the adjustment module increases the motor speed by a preset speed after receiving the speed-up control signal.
2. The switching speed control circuit according to claim 1, characterized in that, The speed-up module includes: The voltage divider resistor has its first end connected to both the control module and the adjustment module, and its second end connected to the speed-up switch.
3. The switching speed control circuit according to claim 2, characterized in that, The adjustment module includes: A bidirectional diode, the first end of which is connected to the control module and the voltage divider resistor respectively; A bidirectional thyristor, wherein the control terminal of the bidirectional thyristor is connected to the second terminal of the bidirectional diode, the first terminal of the bidirectional thyristor is connected to the control module and the first power supply terminal respectively, and the second terminal of the bidirectional thyristor is connected to the motor; The second end of the motor is connected to the second power supply end.
4. The switching speed control circuit according to claim 3, characterized in that, The adjustment module further includes: A first resistor, wherein a first end of the first resistor is connected to a second end of the bidirectional diode, and a second end of the first resistor is connected to a first power supply terminal; A first capacitor, the first end of which is connected to the first end of the bidirectional diode, and the second end of which is connected to the first power supply terminal.
5. The switching speed control circuit according to claim 1, characterized in that, The control module includes: A rectifier bridge, wherein the first end of the rectifier bridge is connected to the adjustment module and the speed-up module respectively, the second end of the rectifier bridge is connected to the first power supply terminal, the third end of the rectifier bridge is connected to the motor, and the fourth end of the rectifier bridge is connected to the motor. The second resistor has its first end connected to the first end of the rectifier bridge; An adjustable resistor, wherein a first end of the adjustable resistor is connected to a second end of a second resistor, the second end of the adjustable resistor is connected to the motor, and the adjustable resistor includes a plurality of third resistors.
6. The switching speed control circuit according to claim 5, characterized in that, The control module also includes: The fourth resistor has its first end connected to the third end of the rectifier bridge and its second end connected to the motor. The fifth resistor has its first end connected to the fourth end of the rectifier bridge and its second end connected to the motor.
7. The switching speed control circuit according to claim 6, characterized in that, The switching speed control circuit also includes: A mechanical switch, wherein the first end of the mechanical switch is connected to the second end of the rectifier bridge, the second end of the mechanical switch is connected to the first power supply end, and the control end of the mechanical switch is connected to the adjustable resistor.
8. The switching speed control circuit according to claim 7, characterized in that, The switching speed control circuit also includes: The second capacitor has a first terminal connected to the second terminal of the mechanical switch and a second terminal connected to the second power supply terminal. The sixth resistor has its first end connected to the second end of the mechanical switch, and its second end connected to the second power supply terminal.
9. The switching speed control circuit according to claim 8, characterized in that, The switching speed control circuit also includes: A varistor, wherein the first end of the varistor is connected to the second end of the mechanical switch, and the second end of the varistor is connected to the second power supply terminal; The third capacitor has its first terminal connected to the first terminal of the mechanical switch and its second terminal connected to the motor.
10. The switching speed control circuit according to claim 9, characterized in that, The switching speed control circuit also includes: A fuse, wherein the first end of the fuse is connected to the second end of the mechanical switch, and the second end of the fuse is connected to the first power supply terminal.