CN103107768A - Alternating current servo motor driver control circuit - Google Patents
Alternating current servo motor driver control circuit Download PDFInfo
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- CN103107768A CN103107768A CN201110361940XA CN201110361940A CN103107768A CN 103107768 A CN103107768 A CN 103107768A CN 201110361940X A CN201110361940X A CN 201110361940XA CN 201110361940 A CN201110361940 A CN 201110361940A CN 103107768 A CN103107768 A CN 103107768A
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Abstract
The invention discloses an alternating current servo motor driver control circuit which comprises an arithmetic unit, a signal generator, a zero position sensor and a load sensor. An input interface, a communication interface and a monitoring interface are arranged on the arithmetic unit, the arithmetic unit is connected with the signal generator through the zero position sensor and the load sensor, and a feedback interface is arranged at one end of the signal generator. The alternating current servo motor driver control circuit improves control precision of a three-phase alternating current asynchronous motor, can control positions, rotating speeds, accelerated speeds and output torque of a common alternating current induction motor and a variable-frequency motor, achieves all-digital control for the motor, enables the alternating current induction motor to have the same speed-adjusting character of a synchronous motor and a direct current motor, is beneficial to reducing abrasion and vibration of parts of the three-phase alternating current asynchronous motor by using of the zero position sensor and a compound sensor, and prolongs service life of the three-phase alternating current asynchronous motor.
Description
Technical field
The present invention relates to circuit field, particularly relate to a kind of AC servo machinery driving device control circuit for ac three-phase asynchronous motor.
Background technology
In AC servo, the type of motor has permanent-magnet synchronous AC servo motor (PMSM) and induction asynchronous alternating current servo motor (IM).PMSM possesses very good low-speed performance, can realize weak magnetic High-speed Control, speed adjustable range is broad, dynamic characteristic and efficient all very high, become the choosing of the main flow of servo system.Although and IM is firm in structure, it is simple, cheap to make, on characteristic and have gap on efficient, paid attention in large-power occasions.
The performance of AC servo can be weighed from aspects such as speed adjustable range, positioning accuracy, steady speed precision, dynamic response and operation stabilities.On control strategy, all be difficult to the servo characteristic that reaches good based on the electric voltage frequency control method of motor mathematics model of stable state and open loop magnetic flux control method, the vector control method that is based on magneto dynamic decoupling Mathematical Modeling of generally using at present, this is the core control method of modern servo system.
The high-performance SERVO CONTROL must rely on high-precision rotor-position feedback, present position-sensor-free technology, generally be applied in some in position and the less demanding SERVO CONTROL occasion of velocity accuracy, such as the simple sewing machine SERVO CONTROL of pursuing quick start-stop and braking, therefore be necessary the position-sensor-free technology is continued to improve, to improve the control precision of ac three-phase asynchronous motor.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of control precision and the useful life that can improve ac three-phase asynchronous motor, saves the AC servo machinery driving device control circuit of electric weight, saving cost.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of AC servo machinery driving device control circuit is provided, comprise arithmetic unit, signal generator, null pick-up and load sensor, be provided with input interface, communication interface, monitor-interface on described arithmetic unit, be connected by null pick-up and load sensor between described arithmetic unit and signal generator, described signal generator one end is provided with feedback interface.
In a preferred embodiment of the present invention, described input interface comprises digital signal input interface and analog input interface.
In a preferred embodiment of the present invention, described arithmetic unit comprises instruction generator, memory and CompilerTools, and described instruction generator is connected with null pick-up and load sensor.
In a preferred embodiment of the present invention, described memory is read-only memory.
the invention has the beneficial effects as follows: the present invention has improved the control precision of ac three-phase asynchronous motor, can be to the position of common AC induction motor and variable-frequency motor, rotating speed, acceleration and output torque are controlled, realized the digital control of motor, AC induction motor is had and synchronous machine, the governor control characteristics that direct current machine is the same, the use of null pick-up and compound sensor, realized the stepless time adjustment to ac three-phase asynchronous motor, the function of soft soft stop, be conducive to reduce wearing and tearing and the vibration of the parts of ac three-phase asynchronous motor, extended the useful life of ac three-phase asynchronous motor.
Description of drawings
Fig. 1 is the perspective view of AC servo machinery driving device control circuit of the present invention one preferred embodiment;
In accompanying drawing, the mark of each parts is as follows: 1, arithmetic unit, 2, signal generator, 3, null pick-up, 4, load sensor, 5, input interface, 6, communication interface, 7, monitor-interface, 8, output interface, 9, feedback interface, 10, instruction generator, 11, memory, 12, CompilerTools.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made more explicit defining.
See also Fig. 1, the embodiment of the present invention comprises:
A kind of AC servo machinery driving device control circuit, comprise arithmetic unit 1, signal generator 2, null pick-up 3 and load sensor 4, be provided with input interface 5, communication interface 6, monitor-interface 7 on described arithmetic unit 1, be connected by null pick-up 3 and load sensor 4 between described arithmetic unit 1 and signal generator 2, described signal generator 2 one ends are provided with feedback interface 9.
Wherein, each component function is as follows:
Input interface 5: receive external control signal, this external control signal comprises the discrete control signal, and the analog quantity control signal;
Monitor-interface 6: receive the pilot signal of ac three-phase asynchronous motor, this pilot signal comprises overcurrent, overvoltage etc.;
Communication interface 7: the real-time Transmission communication data, complete the communication in control circuit of AC servo driver and the external world, can be connected with multiple digital control system and computer, receive extraneous real-time control signal, so that the real-time control of control circuit of AC servo driver.
Arithmetic unit 1: be connected with input interface 5, monitor-interface 6, communication interface 7 and signal generator 2, described arithmetic unit 1 comprises instruction generator 10, memory 11 and CompilerTools 12, described memory 11 is read-only memory, storing control program, according to the external control signal of input interface 5 receptions, the pilot signal of monitor-interface 6 receptions and the real-time control signal that communication interface 7 receives, call control program and produce control command, and send to signal generator 2;
Feedback interface 9: receive the orthogonal encoder feedback signal;
Null pick-up 3, load sensor 4: be connected by null pick-up 3 and load sensor 4 between arithmetic unit 1 and signal generator 2, described null pick-up 3, load sensor 4 can be controlled stepless time adjustment and soft soft stop of ac three-phase asynchronous motor, when too fast or excessively slow when motor speed, can be with communication to arithmetic unit, thereby regulating electric machine power and rotating speed make ac three-phase asynchronous motor have the defencive functions such as overvoltage, overcurrent, short circuit, phase shortage, overload;
Signal generator 2: receive the control command that feedback signal that feedback interface 9 receives and arithmetic unit 1 send, and under real time operating system based on the Current Vector Control principle, according to this feedback signal and this control command, produce pulse width modulated drive signal;
Output interface 9: be connected with signal generator 2, the pulse width modulated drive signal that signal generator 2 is produced outputs to the equipment such as drive plate that are connected with controller.
AC servo machinery driving device control circuit of the present invention has improved the control precision of ac three-phase asynchronous motor, can be to the position of common AC induction motor and variable-frequency motor, rotating speed, acceleration and output torque are controlled, realized the digital control of motor, AC induction motor is had and synchronous machine, the governor control characteristics that direct current machine is the same, the use of null pick-up 3 and compound sensor 4, realized the stepless time adjustment to ac three-phase asynchronous motor, the function of soft soft stop, be conducive to reduce wearing and tearing and the vibration of the parts of ac three-phase asynchronous motor, extended the useful life of ac three-phase asynchronous motor.
The above is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present invention.
Claims (4)
1. AC servo machinery driving device control circuit, it is characterized in that: comprise arithmetic unit (1), signal generator (2), null pick-up (3) and load sensor (4), be provided with input interface (5), communication interface (6), monitor-interface (7) on described arithmetic unit (1), be connected by null pick-up (3) and load sensor (4) between described arithmetic unit (1) and signal generator (2), described signal generator (2) one ends are provided with feedback interface (9).
2. AC servo machinery driving device control circuit according to claim 1, it is characterized in that: described input interface (5) comprises digital signal input interface and analog input interface.
3. AC servo machinery driving device control circuit according to claim 1, it is characterized in that: described arithmetic unit (1) comprises instruction generator (10), memory (11) and CompilerTools (12), and described instruction generator (10) is connected with null pick-up (3) and load sensor (4).
4. AC servo machinery driving device control circuit according to claim 3, it is characterized in that: described memory (11) is read-only memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110361940XA CN103107768A (en) | 2011-11-15 | 2011-11-15 | Alternating current servo motor driver control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110361940XA CN103107768A (en) | 2011-11-15 | 2011-11-15 | Alternating current servo motor driver control circuit |
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| CN103107768A true CN103107768A (en) | 2013-05-15 |
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| CN201110361940XA Pending CN103107768A (en) | 2011-11-15 | 2011-11-15 | Alternating current servo motor driver control circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457826A (en) * | 2014-12-15 | 2015-03-25 | 上海理工大学 | Autonomous mobile high-precision wireless thermal environment measurement system and method |
| CN106652635A (en) * | 2016-12-31 | 2017-05-10 | 成都育芽科技有限公司 | Motor dragging system practical training platform based on cloud computing service system |
| CN108322124A (en) * | 2018-02-12 | 2018-07-24 | 蔚来汽车有限公司 | A kind of motor control module |
| CN110247605A (en) * | 2018-03-07 | 2019-09-17 | Juki株式会社 | Control device of electric motor, sewing machine and method of motor control |
-
2011
- 2011-11-15 CN CN201110361940XA patent/CN103107768A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457826A (en) * | 2014-12-15 | 2015-03-25 | 上海理工大学 | Autonomous mobile high-precision wireless thermal environment measurement system and method |
| CN106652635A (en) * | 2016-12-31 | 2017-05-10 | 成都育芽科技有限公司 | Motor dragging system practical training platform based on cloud computing service system |
| CN108322124A (en) * | 2018-02-12 | 2018-07-24 | 蔚来汽车有限公司 | A kind of motor control module |
| CN110247605A (en) * | 2018-03-07 | 2019-09-17 | Juki株式会社 | Control device of electric motor, sewing machine and method of motor control |
| CN110247605B (en) * | 2018-03-07 | 2023-12-22 | Juki株式会社 | Motor control device, sewing machine and motor control method |
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Application publication date: 20130515 |