CN210111886U - Brushless direct current motor control drive circuit and closed loop servo control system - Google Patents
Brushless direct current motor control drive circuit and closed loop servo control system Download PDFInfo
- Publication number
- CN210111886U CN210111886U CN201921049842.0U CN201921049842U CN210111886U CN 210111886 U CN210111886 U CN 210111886U CN 201921049842 U CN201921049842 U CN 201921049842U CN 210111886 U CN210111886 U CN 210111886U
- Authority
- CN
- China
- Prior art keywords
- gate
- circuit
- motor
- brushless
- input signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model is suitable for a servo control field provides a brushless DC motor control drive circuit, closed loop servo control system, unmanned aerial vehicle, unmanned vehicle and radar automatic tracking control system. The brushless DC motor control drive circuit comprises a combinational logic circuit, a processing circuit and an electronic switch circuit. The closed-loop servo control system comprises a control circuit, a brushless direct current motor control drive circuit, a power amplification circuit, a brushless direct current motor, a reduction gear set and a position feedback potentiometer. The utility model discloses a counter electromotive force circuit of brushless DC motor is handled initiatively, turns into DC voltage with the alternating current counter electromotive force that produces when brushless DC motor operates, makes the strong adaptability of circuit, and the debugging is simple. The brushless direct current motor control drive circuit is used for controlling the overshoot of the closed-loop servo control system, so that the closed-loop servo control system is stable and reliable in application requiring accurate and rapid positioning, the adjustment is simplified, and the production efficiency is improved.
Description
Technical Field
The utility model belongs to the servo control field especially relates to a brushless DC motor control drive circuit, closed loop servo control system, unmanned aerial vehicle, unmanned vehicle and radar automatic tracking control system.
Background
Brushless dc motors are new electromechanical integrated motors that have emerged with the development of semiconductor electronics, which are the product of modern electronics (including power electronics, microelectronics), control theory and motor technology. Brushless dc motors are increasingly used in more and more fields due to their many advantages, in particular their high reliability.
In many applications of brushless dc motors, the application is mostly open loop, and in some special application fields, such as closed loop servo control systems (e.g. attitude control of unmanned aerial vehicles), the back electromotive force of the positive and negative rotation of the motor needs to be fed back to a servo control chip for processing, so as to adjust the braking overshoot. However, when the brushless dc motor is operated, the voltage actually applied to the motor coil is ac voltage, which requires a complicated circuit to convert ac back electromotive force generated when the motor is rotated into dc voltage for the servo control system.
Closed loop servo control applications are an important area in brushless dc motor application systems. As shown in fig. 1, the basic schematic block diagram of the position closed-loop servo control system includes a control circuit, a brushless dc motor, a reduction gear set and a position feedback potentiometer electrically connected in sequence, and an output terminal of the position feedback potentiometer is further electrically connected to a feedback input terminal of the control circuit. The system can be used for an actuating mechanism of a radar automatic tracking control system, an actuating mechanism of wing (or propeller) attitude control of an unmanned aerial vehicle, a rudder control mechanism of an unmanned vehicle (such as an unmanned vehicle and a ship), and the like. The actuators are required to be capable of rapidly and accurately reaching the designated positions according to the requirements of control signals. This requires that the system has good overshoot control, which will cause the system to oscillate with a large overshoot, which will cause the system to be over-damped, and the system response speed to be slow.
At present, most closed-loop servo control systems are realized by adopting a PID (proportion integration differentiation) software algorithm (a proportion unit P, an integral unit I and a differential unit D) and relying on a single chip microcomputer.
Proportional control is the simplest control method, the output of the controller is proportional to the input error signal, and when only proportional control is adopted, the system output has steady-state error.
In integral control, the output of the controller is proportional to the integral of the input error signal. For an automatic control system, if a steady-state error exists after the automatic control system enters a steady state, the automatic control system is called as a system with the steady-state error or a system with a difference for short. To eliminate steady state errors, an integral term must be introduced in the controller. The integral term integrates the error over time, increasing with time. Thus, even if the error is small, the integral term increases with time, which drives the output of the controller to increase, further reducing the steady state error until it equals zero. Therefore, the proportional Plus Integral (PI) controller can enable the system to have no steady-state error after the system enters the steady state.
In the differential control, the output of the controller is in a proportional relationship with the differential of the input error signal (i.e., the rate of change of the error). The automatic control system may oscillate or even destabilize during the adjustment process to overcome the error. The reason for this is that the presence of a large inertia component (link) or a hysteresis component has the effect of suppressing the error, the variation of which always lags behind the variation of the error. The solution is to advance the change in the effect of the suppression error, i.e. when the error is close to zero, the effect of the suppression error should be zero. That is, it is often not enough to introduce a proportional term into the controller, which acts to amplify the magnitude of the error only, and a differential term, which predicts the trend of the error change, is added, so that the controller with proportional + differential (PD) can make the control action of the error suppression equal to zero or even negative in advance, thereby avoiding the serious overshoot of the controlled quantity. Therefore, for controlled objects with greater inertia or hysteresis, the proportional Plus Derivative (PD) controller can improve the dynamic characteristics of the system during adjustment.
In the existing software PID control schemes, inertia is generated when a controlled object (i.e. a motor) is passively processed to drive the whole system to operate at a high speed. This requires a lot of tests during the system tuning process and adjustment of many parameters to stabilize the whole system, and different parameter adjustments are required for different control objects. Therefore, the closed-loop servo control system in the prior art has a complex adjustment process and low system stability.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a brushless DC motor control drive circuit, closed loop servo control system, unmanned aerial vehicle, unmanned vehicles and radar automatic tracking control system, it is complicated to aim at solving prior art's closed loop servo control system adjustment process, problem that system stability is low.
In a first aspect, the present invention provides a brushless dc motor control driving circuit, comprising a combinational logic circuit, a processing circuit and an electronic switching circuit, wherein,
combinational logic circuit for implementation
And
a, B and C are output signals of a first sensor, a second sensor and a third sensor of the brushless direct current motor respectively, A, B and C are input signals of a combinational logic circuit, X, Y, Z, E, F and G are output signals of the combinational logic circuit respectively and are input signals of a processing circuit, X, Y and Z are also input signals of a power amplifying circuit, and an output end of the power amplifying circuit is electrically connected with a first motor coil U, a second motor coil V and a third motor coil W of the brushless direct current motor;
processing circuit for implementing
Andwherein, K is the brushless motor driving control signal outputted by the control circuit, and H, I and J are respectively the output signals of the processing circuit;
the electronic switch circuit comprises a first electronic switch, a second electronic switch and a third electronic switch, alternating current signals on a first motor coil U, a second motor coil V and a third motor coil W of the brushless direct current motor are respectively used as one path of input signals of the first electronic switch, the second electronic switch and the third electronic switch, H, I and J are respectively used as the other path of input signals of the first electronic switch, the second electronic switch and the third electronic switch, and output signals of the first electronic switch, the second electronic switch and the third electronic switch are respectively direct current signals in alternating current signals on the first motor coil U, the second motor coil V and the third motor coil W of the brushless direct current motor; and the output signals of the first electronic switch, the second electronic switch and the third electronic switch are used as the output signals of the feedback end of the brushless direct current motor control drive circuit.
Further, the brushless direct current motor control drive circuit is realized in the form of an integrated circuit.
In a second aspect, the present invention provides a closed-loop servo control system, comprising a control circuit, a brushless dc motor control drive circuit, a power amplification circuit, and a brushless dc motor, which are electrically connected in sequence, the output ends of the first motor coil U, the second motor coil V and the third motor coil W of the brushless DC motor are also electrically connected with the second input end of the brushless DC motor control drive circuit, and the output end of the position feedback potentiometer is electrically connected with the second comparison voltage input end of the control circuit.
In a third aspect, the present invention provides an unmanned aerial vehicle comprising the closed-loop servo control system of the second aspect.
In a fourth aspect, the present invention provides an unmanned vehicle comprising the closed loop servo control system of the second aspect.
In a fifth aspect, the present invention provides a radar automatic tracking control system including the closed loop servo control system of the second aspect.
The utility model discloses in, because brushless DC motor control drive circuit includes combinational logic circuit, processing circuit and electronic switch circuit, adopt the back electromotive force circuit of initiative processing brushless DC motor, the alternating current back electromotive force who produces when running brushless DC motor turns into DC voltage, makes the strong adaptability of circuit, and the debugging is simple.
The closed-loop servo control system adopts the brushless direct current motor as power, the brushless direct current motor comprising a combinational logic circuit, a processing circuit and an electronic switch circuit is used for controlling a driving circuit, and a back electromotive force circuit for actively processing the brushless direct current motor is adopted to convert alternating-current back electromotive force generated when the brushless direct current motor runs into direct-current voltage for the control circuit of the closed-loop servo control system to be used for controlling overshoot, so that the whole closed-loop servo control system is stable and reliable in application requiring accurate and quick positioning, the adjustment is greatly simplified, and the production efficiency is improved.
And because the brushless direct current motor control drive circuit is realized in the form of an integrated circuit, the application is simpler and more reliable.
Drawings
FIG. 1 is a basic schematic block diagram of a prior art position closed loop servo control system.
Fig. 2 is a basic schematic block diagram of a closed-loop servo control system according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a brushless dc motor control driving circuit according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of ac signals on the first motor coil U, the second motor coil V, and the third motor coil W.
Fig. 5 is a schematic diagram of an output dc signal of a brushless dc motor control driving circuit according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantageous effects of the present invention more clearly understood, the present invention is further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to explain the technical solution of the present invention, the following description is made by using specific examples.
Referring to fig. 2, a closed-loop servo control system according to an embodiment of the present invention includes a control circuit 11, a brushless dc motor control driving circuit 12, a power amplifying circuit 13, and a brushless dc motor 14 electrically connected in sequence, a speed reduction gear set 15 and a position feedback potentiometer 16, wherein the feedback end of the brushless dc motor control drive circuit 12 is electrically connected to the first comparison voltage input end of the control circuit 11, the output ends of the first sensor, the second sensor and the third sensor (such as hall sensor) of the brushless dc motor 14 are also electrically connected to the first input end of the brushless dc motor control drive circuit 12, the output ends of the first motor coil U, the second motor coil V and the third motor coil W of the brushless dc motor 14 are also electrically connected to the second input end of the brushless dc motor control drive circuit 12, and the output end of the position feedback potentiometer 16 is electrically connected to the second comparison voltage input end of the control circuit 11.
The control circuit 11 is specifically an operational amplifier circuit.
The embodiment of the utility model provides a closed loop servo control system's theory of operation as follows:
the position control signal input to the control circuit 11 is processed by the control circuit 11, and then outputs the brushless motor driving control signal to the brushless dc motor control driving circuit 12, and after being amplified by the power amplifying circuit 13, the brushless dc motor 14 is driven to rotate, the rotation of the brushless dc motor 14 drives the reduction gear set 15 to rotate, the last gear of the reduction gear set 15 is the final power output pole, and simultaneously it also drives the position feedback potentiometer 16 to rotate, when the position feedback potentiometer 16 rotates, different voltages are generated, and are fed back to the second comparison voltage input end of the control circuit 11 to be compared with the input position control signal, when the two signals are consistent, the control circuit 11 stops outputting the motor driving control signal, and the brushless dc motor 14 stops rotating. However, due to the inertia generated by the rotation of the brushless dc motor 14 and the reduction gear set 15, the entire rotation system (including the brushless dc motor 14 and the reduction gear set 15) cannot be stopped immediately, and ringing (i.e., overshoot) occurs near the stop position. In order to immediately stop the rotation system at the stop position, overshoot control (i.e. overshoot suppression) needs to be added, the brushless dc motor control driving circuit 12 takes out dc components on the first motor winding U, the second motor winding V and the third motor winding W from the ac back electromotive force generated when the brushless dc motor 14 rotates, feeds them back to the first comparison voltage input terminal of the control circuit 11, compares them with the voltage fed back to the second comparison voltage input terminal of the control circuit 11 by the position feedback potentiometer 16, when the voltage output from the feedback terminal of the brushless dc motor control driving circuit 12 is high (indicating over damping), the output voltage of the control circuit 11 is low, otherwise, when the voltage output from the feedback terminal of the brushless dc motor control driving circuit 12 is low (indicating under damping), the output voltage of the control circuit 11 is high, thereby controlling the output capability (i.e. early deceleration) of the brushless dc motor control drive circuit 12 to achieve the overshoot control of the entire closed loop system.
Referring to fig. 3, the brushless dc motor control driving circuit 12 according to an embodiment of the present invention includes a combinational logic circuit 121, a processing circuit 122 and an electronic switch circuit 123, wherein the combinational logic circuit 121 is used for implementing
Andwherein A, B and C are output signals of a first sensor, a second sensor and a third sensor (for example, hall sensor, etc.) of the brushless dc motor 14, A, B and C are input signals of the combinational logic circuit 121, X, Y, Z, E, F and G are output signals of the combinational logic circuit 121 and are input signals of the processing circuit 122, X, Y and Z are also input signals of the power amplifying circuit 13, and an output terminal of the power amplifying circuit 13 is electrically connected to the first motor coil U, the second motor coil V and the third motor coil W of the brushless dc motor 14; the processing circuit 122 is used for realizing
And
where K is a brushless motor drive control signal output from the control circuit 11, and H, I and J are output signals from the processing circuit 122, respectively; the electronic switch circuit 123 includes a first electronic switch 1231, a second electronic switch 1232, and a third electronic switch 1233, wherein ac signals (shown in fig. 4) of a first motor coil U, a second motor coil V, and a third motor coil W of the brushless dc motor 14 are respectively one input signal of the first electronic switch 1231, the second electronic switch 1232, and the third electronic switch 1233, H, I and J are respectively another input signal of the first electronic switch 1231, the second electronic switch 1232, and the third electronic switch 1233, and output signals OUT of the first electronic switch 1231, the second electronic switch 1232, and the third electronic switch 1233 are respectively dc signals (shown in fig. 5) of ac signals of the first motor coil U, the second motor coil V, and the third motor coil W of the brushless dc motor 14; the output signals OUT of the first electronic switch 1231, the second electronic switch 1232, and the third electronic switch 1233 are used as the output signals of the feedback terminal of the brushless dc motor control driving circuit 12, which reflects the output signals of the brushless dc motorThe rotational states of the three motors of the motor 14.
In the embodiment of the present invention, the combinational logic circuit 121 specifically includes a first not gate 1211, a second not gate 1212, a third not gate 1213, a first not gate 1214, a second not gate 1215, a third not gate 1216, a fourth not gate 1217, a fifth not gate 1218, and a sixth not gate 1219. An output signal a of a first sensor of the brushless dc motor 14 is used as an input signal of a first not gate 1211 and one input signal of a first nand gate 1214, an output signal B of a second sensor of the brushless dc motor 14 is used as an input signal of a second not gate 1212 and one input signal of a second nand gate 1215, an output signal C of a third sensor of the brushless dc motor 14 is used as an input signal of a third not gate 1213 and one input signal of a third nand gate 1216, an output signal of the third not gate 1213 is used as another input signal of the first nand gate 1214, an output signal of the first not gate 1211 is used as another input signal of the second nand gate 1215, and an output signal of the second not gate 1212 is used as another input signal of the third nand gate 1216; the output signal of the first nand gate 1214 is used as the input signal of the fourth not gate 1217, the output signal of the second nand gate 1215 is used as the input signal of the fifth not gate 1218, and the output signal of the third nand gate 1216 is used as the input signal of the sixth not gate 1219; the output signals X, Y and Z of the combinational logic circuit 121 are the output signals of the fourth not gate 1217, the fifth not gate 1218 and the sixth not gate 1219, respectively, and the output signals E, F and G of the combinational logic circuit 121 are the output signals of the first nand gate 1214, the second nand gate 1215 and the third nand gate 1216, respectively.
The processing circuit 122 specifically includes: the seventh nor gate 1221, the first nor gate 1222, the second nor gate 1223, the third nor gate 1224, the fourth nor gate 1225, the fifth nor gate 1226, the sixth nor gate 1227, the fourth nand gate 1228, the fifth nand gate 1229, and the sixth nand gate 1230. The position control signals output by the control circuit 11 are respectively used as an input signal of a seventh not gate 1221, an input signal of a second not gate 1223, an input signal of a fourth not gate 1225 and an input signal of a sixth not gate 1227, and the output signal of the seventh not gate 1221 is respectively used as an input signal of a first not gate 1222, an input signal of a third not gate 1224 and an input signal of a fifth not gate 1226; the output signals E, F, G, X, Y and Z of the combinational logic circuit 121 are respectively used as the other input signal of the second nor gate 1223, the other input signal of the fourth nor gate 1225, the other input signal of the sixth nor gate 1227, the other input signal of the first nor gate 1222, the other input signal of the third nor gate 1224, and the other input signal of the fifth nor gate 1226; the output signals of the first nor gate 1222 and the second nor gate 1223 are respectively used as the input signals of the fourth nand gate 1228, H is the output signal of the fourth nand gate 1228, the output signals of the third nor gate 1224 and the fourth nor gate 1225 are respectively used as the input signals of the fifth nand gate 1229, I is the output signal of the fifth nand gate 1229, the output signals of the fifth nor gate 1226 and the sixth nor gate 1227 are respectively used as the input signals of the sixth nand gate 1230, and J is the output signal of the sixth nand gate 1230.
The embodiment of the utility model provides a brushless DC motor control drive circuit 12 will drive alternating current signal (including alternating current back electromotive force) on brushless DC motor 14's the first motor coil U, second motor coil V, the third motor coil W and convert into and reflect two way direct current signal of motor corotation, reversal respectively, provide control circuit 11, can supply back level closed loop servo control system to carry out the control of system overshoot. The method specifically comprises the following steps: the third electronic switch 1233 is turned on when the first motor coil U of the brushless dc motor 14 is at a high level, the second electronic switch 1232 is turned on when the second motor coil V of the brushless dc motor 14 is at a high level, and the first electronic switch 1231 is turned on when the third motor coil W of the brushless dc motor 14 is at a high level; at any time, only one path of direct current signal is output, one path of direct current signal is output in a positive rotation mode, and the other path of direct current signal is output in a reverse rotation mode.
The embodiment of the utility model provides a brushless DC motor control drive circuit adopts integrated circuit's form to realize, makes to use simpler and reliable.
The embodiment of the utility model provides an include still that the embodiment of the utility model provides a closed loop servo control system's unmanned aerial vehicle.
The embodiment of the utility model provides a still provide one kind and include the embodiment of the utility model provides a closed loop servo control system's unmanned vehicles.
The embodiment of the utility model provides a still provide one kind and include the embodiment of the utility model provides a closed loop servo control system's radar automatic tracking control system.
The utility model discloses in, because brushless DC motor control drive circuit includes combinational logic circuit, processing circuit and electronic switch circuit, adopt the back electromotive force circuit of initiative processing brushless DC motor, the alternating current back electromotive force who produces when running brushless DC motor turns into DC voltage, makes the strong adaptability of circuit, and the debugging is simple.
The closed-loop servo control system adopts the brushless direct current motor as power, the brushless direct current motor comprising a combinational logic circuit, a processing circuit and an electronic switch circuit is used for controlling a driving circuit, and a back electromotive force circuit for actively processing the brushless direct current motor is adopted to convert alternating-current back electromotive force generated when the brushless direct current motor runs into direct-current voltage for the control circuit of the closed-loop servo control system to be used for controlling overshoot, so that the whole closed-loop servo control system is stable and reliable in application requiring accurate and quick positioning, the adjustment is greatly simplified, and the production efficiency is improved.
And because the brushless direct current motor control drive circuit is realized in the form of an integrated circuit, the application is simpler and more reliable.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A brushless DC motor control drive circuit is characterized in that the drive circuit comprises a combinational logic circuit, a processing circuit and an electronic switch circuit, wherein,
combinational logic circuit for implementation
And
a, B and C are output signals of a first sensor, a second sensor and a third sensor of the brushless direct current motor respectively, A, B and C are input signals of a combinational logic circuit, X, Y, Z, E, F and G are output signals of the combinational logic circuit respectively and are input signals of a processing circuit, X, Y and Z are also input signals of a power amplifying circuit, and an output end of the power amplifying circuit is electrically connected with a first motor coil U, a second motor coil V and a third motor coil W of the brushless direct current motor;
processing circuit for implementing
And
wherein, K is the brushless motor driving control signal outputted by the control circuit, and H, I and J are respectively the output signals of the processing circuit;
the electronic switch circuit comprises a first electronic switch, a second electronic switch and a third electronic switch, alternating current signals on a first motor coil U, a second motor coil V and a third motor coil W of the brushless direct current motor are respectively used as one path of input signals of the first electronic switch, the second electronic switch and the third electronic switch, H, I and J are respectively used as the other path of input signals of the first electronic switch, the second electronic switch and the third electronic switch, and output signals of the first electronic switch, the second electronic switch and the third electronic switch are respectively direct current signals in alternating current signals on the first motor coil U, the second motor coil V and the third motor coil W of the brushless direct current motor; and the output signals of the first electronic switch, the second electronic switch and the third electronic switch are used as the output signals of the feedback end of the brushless direct current motor control drive circuit.
2. The brushless dc motor control driver circuit of claim 1, wherein the combinational logic circuit specifically comprises a first not gate, a second not gate, a third not gate, a first nand gate, a second nand gate, a third nand gate, a fourth not gate, a fifth not gate, and a sixth not gate;
an output signal A of a first sensor of the brushless direct current motor is used as an input signal of a first NOT gate and one input signal of a first NAND gate, an output signal B of a second sensor of the brushless direct current motor is used as an input signal of a second NOT gate and one input signal of a second NAND gate, an output signal C of a third sensor of the brushless direct current motor is used as an input signal of a third NOT gate and one input signal of a third NAND gate, an output signal of the third NOT gate is used as the other input signal of the first NAND gate, an output signal of the first NOT gate is used as the other input signal of the second NAND gate, and an output signal of the second NOT gate is used as the other input signal of the third NAND gate; the output signal of the first NAND gate is used as the input signal of the fourth NAND gate, the output signal of the second NAND gate is used as the input signal of the fifth NAND gate, and the output signal of the third NAND gate is used as the input signal of the sixth NAND gate; output signals X, Y and Z of the combinational logic circuit are output signals of a fourth not gate, a fifth not gate, and a sixth not gate, respectively, and output signals E, F and G of the combinational logic circuit are output signals of a first nand gate, a second nand gate, and a third nand gate, respectively.
3. The brushless dc motor control and drive circuit of claim 2, wherein the processing circuit specifically comprises: a seventh nor gate, the first nor gate, the second nor gate, the third nor gate, the fourth nor gate, the fifth nor gate, the sixth nor gate, the fourth nand gate, the fifth nand gate and the sixth nand gate;
the position control signal output by the control circuit is respectively used as an input signal of a seventh NOR gate, an input signal of a second NOR gate, an input signal of a fourth NOR gate and an input signal of a sixth NOR gate, and an output signal of the seventh NOR gate is respectively used as an input signal of the first NOR gate, an input signal of the third NOR gate and an input signal of the fifth NOR gate; output signals E, F, G, X, Y and Z of the combinational logic circuit are respectively used as another input signal of the second NOR gate, another input signal of the fourth NOR gate, another input signal of the sixth NOR gate, another input signal of the first NOR gate, another input signal of the third NOR gate and another input signal of the fifth NOR gate; output signals of the first NOR gate and the second NOR gate are respectively used as input signals of a fourth NAND gate, H is an output signal of the fourth NAND gate, output signals of the third NOR gate and the fourth NOR gate are respectively used as input signals of a fifth NAND gate, I is an output signal of the fifth NAND gate, output signals of the fifth NOR gate and a sixth NOR gate are respectively used as input signals of a sixth NAND gate, and J is an output signal of the sixth NAND gate.
4. The brushless dc motor control driver circuit of claim 1, wherein the first sensor, the second sensor, and the third sensor are hall sensors.
5. The brushless dc motor control and drive circuit of claim 1, wherein the brushless dc motor control and drive circuit is implemented in the form of an integrated circuit.
6. A closed-loop servo control system, characterized in that the closed-loop servo control system comprises a control circuit, a brushless DC motor control drive circuit according to any one of claims 1 to 5, a power amplification circuit, a brushless DC motor, which are electrically connected in sequence, the output ends of the first motor coil U, the second motor coil V and the third motor coil W of the brushless DC motor are also electrically connected with the second input end of the brushless DC motor control drive circuit, and the output end of the position feedback potentiometer is electrically connected with the second comparison voltage input end of the control circuit.
7. A closed loop servo control system as set forth in claim 6 wherein said control circuit is an operational amplifier circuit.
8. A drone comprising a closed loop servo control system as claimed in claim 6 or 7.
9. An unmanned vehicle comprising a closed loop servo control system as claimed in claim 6 or 7.
10. A radar auto-tracking control system comprising a closed loop servo control system as claimed in claim 6 or 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921049842.0U CN210111886U (en) | 2019-07-05 | 2019-07-05 | Brushless direct current motor control drive circuit and closed loop servo control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921049842.0U CN210111886U (en) | 2019-07-05 | 2019-07-05 | Brushless direct current motor control drive circuit and closed loop servo control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210111886U true CN210111886U (en) | 2020-02-21 |
Family
ID=69566102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921049842.0U Active CN210111886U (en) | 2019-07-05 | 2019-07-05 | Brushless direct current motor control drive circuit and closed loop servo control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210111886U (en) |
-
2019
- 2019-07-05 CN CN201921049842.0U patent/CN210111886U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20070040529A1 (en) | Stepping motor control system and method for controlling a stepping motor using closed and open loop controls | |
| WO2009110206A1 (en) | Brushless motor device and control device | |
| CN105099300A (en) | Controller, special-purpose integrated circuit, stepper motor, actuator and application thereof | |
| US6700342B2 (en) | Method and apparatus for high performance permanent magnet motor speed control with limited position information | |
| CN106160609A (en) | A kind of permanent magnetic brushless control method | |
| CN107425771B (en) | Control method of motor in unmanned aerial vehicle and electronic speed regulator | |
| WO2019100893A1 (en) | Electronic speed control, electric motor control system and unmanned aerial vehicle | |
| US8994303B2 (en) | Method and device for driving brushless direct-current motor during displacement of actuating element | |
| CN210111886U (en) | Brushless direct current motor control drive circuit and closed loop servo control system | |
| CN110707662A (en) | Servo control system based on hardware PID | |
| CN114553070A (en) | Motor starting control method | |
| WO2019100894A1 (en) | Electronic governor, motor control system, and unmanned aerial vehicle | |
| US11251728B2 (en) | Driving circuit and driving method of stepping motor and electronic machine using the same | |
| CN110815233B (en) | Robot driving method, device, storage medium and robot | |
| CN111934587A (en) | Servo motor, driver, control system and control method thereof | |
| KR20120056951A (en) | Method for MICRO-STEPPING CONROL OF PERMANENT MAGNET STEP MOTOR | |
| CN109546901B (en) | Phase changing method of brushless direct current motor | |
| US4147968A (en) | Stepper motor control | |
| JP3446595B2 (en) | Servo device | |
| CN101355335B (en) | Closed-cycle control system for digital dynamic force moment of DC motor | |
| JP2011200073A (en) | Motor drive | |
| US20210211076A1 (en) | Mechatronic assembly for driving or positioning an external member | |
| CN111416561B (en) | Improved three-ring control method for motor | |
| CN110875698A (en) | Control system, control method and refrigerant valve with stepping motor | |
| JPS61157288A (en) | Servo motor controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210816 Address after: 514000 B102, building B, No. 18, dongnanyang Industrial Park, Longkeng village, Xiyang Town, Meijiang district, Meizhou City, Guangdong Province Patentee after: Meizhou Jinhang Technology Co.,Ltd. Address before: 514000 Building 1, dongnanyang Industrial Park, Longkeng village, Xiyang Town, Meijiang district, Meizhou City, Guangdong Province Patentee before: Meizhou Jinyuyan Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right |