CN103715946A - Motor starting method, motor starting device and motor - Google Patents
Motor starting method, motor starting device and motor Download PDFInfo
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- CN103715946A CN103715946A CN201310713880.2A CN201310713880A CN103715946A CN 103715946 A CN103715946 A CN 103715946A CN 201310713880 A CN201310713880 A CN 201310713880A CN 103715946 A CN103715946 A CN 103715946A
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Abstract
The invention provides a motor starting method, a motor starting device and a motor. The motor starting method comprises: inputting a starting signal having a predetermined period to the motor, wherein the starting signal of each period comprises a first time length pulse width modulation signal and a second time length stop signal, and the duty ratio of the pulse width modulation signal increases progressively with the input time length of the starting signal; detecting a rotating speed signal of the motor in real time; and determining the completing of the motor starting when the duty ratio of the pulse width modulation signal is detected to be 1 and/ or the rotating speed of the motor reaches a predetermined object value. Through the technical scheme in the invention, the motor is prevented from generating large noises when starting, and meanwhile, starting failure of the motor since the motor goes in locked rotation protection when starting is prevented.
Description
Technical field
The present invention relates to motor technology field, in particular to a kind of motor start-up method, a kind of motor starter and a kind of motor.
Background technology
In correlation technique, for the startup of DC motor, conventionally there are two kinds of methods, first method is to adopt the mode directly starting, but the startup noise of motor is larger; Second method is to adopt the progressively mode of speed-adjusting start; but when the load torque of motor is larger, when low speed, can not start, cause the stall that is greater than motor start-up time of motor to judge the time; make motor enter rotation-clogging protection, cause electric motor starting failure.
Therefore, produce larger noise while how to avoid motor start-up, while avoiding motor start-up, enter rotation-clogging protection becomes technical problem urgently to be resolved hurrily simultaneously.
Summary of the invention
The present invention is intended at least solve one of technical problem existing in prior art or correlation technique.
For this reason, one object of the present invention has been to propose a kind of larger noise, motor start-up method that enters rotation-clogging protection while simultaneously avoiding motor start-up of producing can avoid motor start-up time.
Another object of the present invention is to have proposed a kind of motor starter.
Another object of the present invention is to have proposed a kind of motor.
For achieving the above object, embodiment according to a first aspect of the invention, a kind of motor start-up method has been proposed, comprise: the enabling signal to motor input with predetermined period, wherein, the described enabling signal in each cycle comprises the stop signal of pulse-width signal and second duration of the first duration, and the duty ratio of described pulse-width signal increases progressively with the input duration of described enabling signal; Detect in real time the tach signal of described motor; In the duty ratio that described pulse-width signal detected, be 1 and/or the rotating speed of described motor while reaching predetermined target value, determine that described motor start-up completes.
According to the motor start-up method of the embodiment of the present invention, by the enabling signal to motor input predetermined period, and the enabling signal in each cycle comprises pulse-width signal, and the duty ratio of pulse-width signal is increased progressively, make progressively acceleration startup of motor, avoid directly starting the noise that generation is larger.
By the enabling signal in each cycle, comprise stop signal, can make motor can adopt the mode of intermittently segmentation progressively to start, avoided when the starting torque deficiency of motor, continuation is inputted pulse-width signal to motor, cause the stall that is greater than motor start-up time of motor to judge the time, cause motor start-up failure.
In addition, motor start-up method according to the above embodiment of the present invention, can also have following additional technical characterictic:
According to one embodiment of present invention, the stall that described the first duration is less than described motor is judged the time.
According to the motor start-up method of the embodiment of the present invention; the stall that is less than motor by making to input the first duration of pulse-width signal is judged the time; can avoid when the starting torque deficiency of motor; continuation is inputted pulse-width signal to motor; cause the stall that has surpassed motor start-up time of motor to judge the time; make motor enter rotation-clogging protection, and then cause motor start-up failure.
According to one embodiment of present invention, the step that the duty ratio of described pulse-width signal increases progressively with the input duration of described enabling signal is specially: the described predetermined period of every process, the duty ratio of described pulse-width signal increases predetermined value.
According to the motor start-up method of the embodiment of the present invention, the every predetermined value increasing through predetermined period of duty ratio of pulse-width signal can arrange according to user's demand, if user needs motor to start fast, can be set to larger numerical value by this predetermined value, such as 40%(can certainly be other numerical value, such as 25%, 30% etc.), thus actuating motor fast.If user needs slow start motor, can be set to less numerical value by this predetermined value, such as 1%, 2% etc.
According to one embodiment of present invention, described predetermined period equals described the first duration and described the second duration sum, and described the first duration is more than or equal to described the second duration.
According to the motor start-up method of the embodiment of the present invention, by making the input duration of pulse-width signal be more than or equal to the input duration of stop signal, can guarantee that motor can progressively start, avoid the input duration of stop signal excessive, cause motor stopping inputting after pulse-width signal, motor enters again halted state in the input duration of stop signal, causes motor not start.
According to one embodiment of present invention, the initial duty cycle of described pulse-width signal is 10% to 50%.
According to one embodiment of present invention, after completing, definite described motor start-up also comprises: to described motor, input continuous driving signal, to drive described motor work.
According to the motor start-up method of the embodiment of the present invention, after motor start-up, in order to ensure motor, continue to carry out work, can input continuous driving signal to motor.
According to the embodiment of second aspect present invention, a kind of motor starter has also been proposed, comprise: signal generating unit, enabling signal for generation of predetermined period, wherein, the enabling signal in each cycle comprises the stop signal of pulse-width signal and second duration of the first duration, and the duty ratio of described pulse-width signal increases progressively with the input duration of described enabling signal; Signal output unit, is connected to the control end of motor, for the described enabling signal that described signal generating unit is produced, exports described motor to; Detecting unit, for detecting in real time the tach signal of described motor; Identifying unit, for judging the duty ratio of described pulse-width signal and/or the rotating speed of described motor, when described duty ratio is 1 and/or the rotating speed of described motor while reaching predetermined target value, determines that described motor start-up completes.
According to the motor starter of the embodiment of the present invention, by the enabling signal to motor input predetermined period, and the enabling signal in each cycle comprises pulse-width signal, and the duty ratio of pulse-width signal is increased progressively, make progressively acceleration startup of motor, avoid directly starting the noise that generation is larger.
By the enabling signal in each cycle, comprise stop signal, can make motor can adopt the mode of intermittently segmentation progressively to start, avoided when the starting torque deficiency of motor, continuation is inputted pulse-width signal to motor, cause the stall that is greater than motor start-up time of motor to judge the time, cause motor start-up failure.
According to one embodiment of present invention, the stall that described the first duration is less than described motor is judged the time.
According to the motor starter of the embodiment of the present invention; the stall that is less than motor by making to input the first duration of pulse-width signal is judged the time; can avoid when the starting torque deficiency of motor; continuation is inputted pulse-width signal to motor; cause the stall that has surpassed motor start-up time of motor to judge the time; make motor enter rotation-clogging protection, and then cause motor start-up failure.
According to one embodiment of present invention, described signal generating unit also for: after described identifying unit determines that described motor start-up completes, produce continuous driving signal; Described signal output unit also for: export described driving signal to described motor, to drive described motor work.
According to the motor starter of the embodiment of the present invention, after motor start-up, in order to ensure motor, continue to carry out work, can input continuous driving signal to motor.
According to the embodiment of third aspect present invention, also proposed a kind of motor, having comprised: control end, has been connected to the motor starter described in above-mentioned arbitrary embodiment, the enabling signal sending for receiving described motor starter, so that described motor starts.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination obviously and is easily understood becoming the description of embodiment, wherein:
Fig. 1 shows the schematic flow diagram of motor start-up method according to an embodiment of the invention;
Fig. 2 shows the schematic block diagram of motor starter according to an embodiment of the invention;
Fig. 3 shows the syndeton schematic diagram of motor starter and motor according to an embodiment of the invention;
Fig. 4 shows the schematic flow diagram of motor start-up method according to another embodiment of the invention;
Fig. 5 shows the waveform schematic diagram of motor start-up signal according to an embodiment of the invention.
Embodiment
In order more clearly to understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, in the situation that not conflicting, the application's embodiment and the feature in embodiment can combine mutually.
A lot of details have been set forth in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not subject to the restriction of following public specific embodiment.
Fig. 1 shows the schematic flow diagram of motor start-up method according to an embodiment of the invention.
As shown in Figure 1, motor start-up method according to an embodiment of the invention, comprise: step 102, the enabling signal to motor input with predetermined period, wherein, the described enabling signal in each cycle comprises the stop signal of pulse-width signal and second duration of the first duration, and the duty ratio of described pulse-width signal increases progressively with the input duration of described enabling signal; Step 104, detects the tach signal of described motor in real time; Step 106, is 1 and/or the rotating speed of described motor while reaching predetermined target value in the duty ratio that described pulse-width signal detected, determines that described motor start-up completes.
By the enabling signal to motor input predetermined period, and the enabling signal in each cycle comprises pulse-width signal, and the duty ratio of pulse-width signal is increased progressively, and make progressively acceleration startup of motor, avoid directly starting the noise that generation is larger.
By the enabling signal in each cycle, comprise stop signal, can make motor can adopt the mode of intermittently segmentation progressively to start, avoided when the starting torque deficiency of motor, continuation is inputted pulse-width signal to motor, cause the stall that is greater than motor start-up time of motor to judge the time, cause motor start-up failure.
In addition, motor start-up method according to the above embodiment of the present invention, can also have following additional technical characterictic:
According to one embodiment of present invention, the stall that described the first duration is less than described motor is judged the time.
The stall that is less than motor by making to input the first duration of pulse-width signal is judged the time; can avoid when the starting torque deficiency of motor; continuation is inputted pulse-width signal to motor; cause the stall that has surpassed motor start-up time of motor to judge the time; make motor enter rotation-clogging protection, and then cause motor start-up failure.
According to one embodiment of present invention, the step that the duty ratio of described pulse-width signal increases progressively with the input duration of described enabling signal is specially: the described predetermined period of every process, the duty ratio of described pulse-width signal increases predetermined value.
The every predetermined value increasing through predetermined period of duty ratio of pulse-width signal can arrange according to user's demand, if user needs motor to start fast, can be set to larger numerical value by this predetermined value, such as 40%(can certainly be other numerical value, such as 25%, 30% etc.), thus actuating motor fast.If user needs slow start motor, can be set to less numerical value by this predetermined value, such as 1%, 2% etc.
According to one embodiment of present invention, described predetermined period equals described the first duration and described the second duration sum, and described the first duration is more than or equal to described the second duration.
By making the input duration of pulse-width signal be more than or equal to the input duration of stop signal, can guarantee that motor can progressively start, avoid the input duration of stop signal excessive, cause motor stopping inputting after pulse-width signal, motor enters again halted state in the input duration of stop signal, causes motor not start.
According to one embodiment of present invention, the initial duty cycle of described pulse-width signal is 10% to 50%.
According to one embodiment of present invention, after completing, definite described motor start-up also comprises: to described motor, input continuous driving signal, to drive described motor work.
After motor start-up, in order to ensure motor, continue to carry out work, can input continuous driving signal to motor.
Fig. 2 shows the schematic block diagram of motor starter according to an embodiment of the invention.
As shown in Figure 2, motor starter 200 according to an embodiment of the invention, comprise: signal generating unit 202, enabling signal for generation of predetermined period, wherein, the enabling signal in each cycle comprises the stop signal of pulse-width signal and second duration of the first duration, and the duty ratio of described pulse-width signal increases progressively with the input duration of described enabling signal; Signal output unit 204, is connected to the control end of motor, for the described enabling signal that described signal generating unit is produced, exports described motor to; Detecting unit 206, for detecting in real time the tach signal of described motor; Identifying unit 208, for judging the duty ratio of described pulse-width signal and/or the rotating speed of described motor, when described duty ratio is 1 and/or the rotating speed of described motor while reaching predetermined target value, determines that described motor start-up completes.
By the enabling signal to motor input predetermined period, and the enabling signal in each cycle comprises pulse-width signal, and the duty ratio of pulse-width signal is increased progressively, and make progressively acceleration startup of motor, avoid directly starting the noise that generation is larger.
By the enabling signal in each cycle, comprise stop signal, can make motor can adopt the mode of intermittently segmentation progressively to start, avoided when the starting torque deficiency of motor, continuation is inputted pulse-width signal to motor, cause the stall that is greater than motor start-up time of motor to judge the time, cause motor start-up failure.
According to one embodiment of present invention, the stall that described the first duration is less than described motor is judged the time.
The stall that is less than motor by making to input the first duration of pulse-width signal is judged the time; can avoid when the starting torque deficiency of motor; continuation is inputted pulse-width signal to motor; cause the stall that has surpassed motor start-up time of motor to judge the time; make motor enter rotation-clogging protection, and then cause motor start-up failure.
According to one embodiment of present invention, described signal generating unit 202 also for: after described identifying unit 208 determines that described motor start-up completes, produce continuous driving signal; Described signal output unit 204 also for: export described driving signal to described motor, to drive described motor work.
After motor start-up, in order to ensure motor, continue to carry out work, can input continuous driving signal to motor.
Fig. 3 shows the syndeton schematic diagram of motor starter and motor according to an embodiment of the invention.
As shown in Figure 3, the power end of motor 302 (positive power source terminal 3026 and negative power end 3028) is connected to respectively power end VCC and earth terminal in motor starter 304, motor starter 304 sends enabling signal to the control end 3024 of motor 302, with actuating motor 302.Wherein, motor starter 304 can comprise single-chip microcomputer.
Motor 302 is sent to motor starter 304 by feedback signal output 3022 by the rotary speed information of motor 302, so that motor starter 304 judges according to the rotating speed of motor 302 whether motor 302 has started.
Fig. 4 shows the schematic flow diagram of motor start-up method according to another embodiment of the invention.
As shown in Figure 4, motor start-up method according to another embodiment of the invention, comprising:
The pulse-width signal t that step 404 is n to motor input duty cycle
1time, with actuating motor the real-time tach signal that detects described motor, wherein t
1the stall of < motor is judged the time, avoids at the starting torque of motor hour, and the time of input pulse-width signal is greater than the stall of motor and judges the time, causes motor to enter rotation-clogging protection, causes motor start-up failure.
Wherein, predetermined value can arrange according to user's demand, if user needs motor to start fast, can be set to larger numerical value by this predetermined value, such as 40%(can certainly be other numerical value, such as 25%, 30% etc.), thus actuating motor fast.If user needs slow start motor, can be set to less numerical value by this predetermined value, such as 1%, 2% etc.
According to above step, can produce enabling signal 502 as shown in Figure 5, the enabling signal 502 of one of them cycle T comprises t
1the pulse-width signal of time and t
2the stop signal of time, and the duty ratio of pulse-width signal is every through one-period T increase predetermined value, makes progressively acceleration startup of motor, avoids directly starting producing larger noise.Simultaneously, can make motor can adopt the mode of intermittently segmentation progressively to start, avoid, when the starting torque deficiency of motor, continuing to motor input pulse-width signal, cause the stall that is greater than motor start-up time of motor to judge the time, cause motor start-up failure.
Duty ratio being detected, be 1 and/or the rotating speed of motor while reaching predetermined target value, determine that motor start-up completes, export continual and steady driving signal 504, drive motor work.
More than be described with reference to the accompanying drawings technical scheme of the present invention, considered in correlation technique, conventionally had two kinds of method actuating motors, first method is to adopt the mode directly starting, but the startup noise of motor is larger; Second method is to adopt the progressively mode of speed-adjusting start; but when the load torque of motor is larger, when low speed, can not start, cause the stall that is greater than motor start-up time of motor to judge the time; make motor enter rotation-clogging protection, cause electric motor starting failure.Therefore, the present invention proposes a kind of new motor start-up scheme, can make motor progressively accelerate to start, avoid directly starting and produce larger noise, meanwhile, avoid, when the starting torque deficiency of motor, continuing to motor input pulse-width signal, cause the stall that is greater than motor start-up time of motor to judge the time, cause motor start-up failure.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a motor start-up method, is characterized in that, comprising:
The enabling signal to motor input with predetermined period, wherein, the described enabling signal in each cycle comprises the stop signal of pulse-width signal and second duration of the first duration, and the duty ratio of described pulse-width signal increases progressively with the input duration of described enabling signal;
Detect in real time the tach signal of described motor;
In the duty ratio that described pulse-width signal detected, be 1 and/or the rotating speed of described motor while reaching predetermined target value, determine that described motor start-up completes.
2. motor start-up method according to claim 1, is characterized in that, described the first duration is less than the stall of described motor and judges the time.
3. motor start-up method according to claim 1, is characterized in that, the step that the duty ratio of described pulse-width signal increases progressively with the input duration of described enabling signal is specially:
The described predetermined period of every process, the duty ratio of described pulse-width signal increases predetermined value.
4. motor start-up method according to claim 1, is characterized in that, described predetermined period equals described the first duration and described the second duration sum, and described the first duration is more than or equal to described the second duration.
5. motor start-up method according to claim 1, is characterized in that, the initial duty cycle of described pulse-width signal is 10% to 50%.
6. according to the motor start-up method described in any one in claim 1 to 5, it is characterized in that, after definite described motor start-up completes, also comprise:
To described motor, input continuous driving signal, to drive described motor work.
7. a motor starter, is characterized in that, comprising:
Signal generating unit, enabling signal for generation of predetermined period, wherein, the enabling signal in each cycle comprises the stop signal of pulse-width signal and second duration of the first duration, and the duty ratio of described pulse-width signal increases progressively with the input duration of described enabling signal;
Signal output unit, is connected to the control end of motor, for the described enabling signal that described signal generating unit is produced, exports described motor to;
Detecting unit, for detecting in real time the tach signal of described motor;
Identifying unit, for judging the duty ratio of described pulse-width signal and/or the rotating speed of described motor, when described duty ratio is 1 and/or the rotating speed of described motor while reaching predetermined target value, determines that described motor start-up completes.
8. motor starter according to claim 7, is characterized in that, described the first duration is less than the stall of described motor and judges the time.
9. according to the motor starter described in claim 7 or 8, it is characterized in that, described signal generating unit also for: after described identifying unit determines that described motor start-up completes, produce continuous driving signal;
Described signal output unit also for: export described driving signal to described motor, to drive described motor work.
10. a motor, is characterized in that, comprising:
Control end, is connected to the motor starter described in any one in claim 7 to 9, and the enabling signal sending for receiving described motor starter, so that described motor starts.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310713880.2A CN103715946B (en) | 2013-12-19 | 2013-12-19 | Motor start-up method, motor starter and motor |
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| CN201310713880.2A CN103715946B (en) | 2013-12-19 | 2013-12-19 | Motor start-up method, motor starter and motor |
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| CN103715946A true CN103715946A (en) | 2014-04-09 |
| CN103715946B CN103715946B (en) | 2016-09-07 |
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| CN105162374A (en) * | 2015-08-27 | 2015-12-16 | 深圳市沛城电子科技有限公司 | Starting control method and device of brushless direct-current motor |
| CN105186932A (en) * | 2014-05-26 | 2015-12-23 | 珠海格力电器股份有限公司 | Method for controlling starting rotating speed of direct current motor |
| CN105322833A (en) * | 2015-11-13 | 2016-02-10 | 广东美的制冷设备有限公司 | Air conditioner, start control method and start control apparatus for direct current motor |
| CN106487281A (en) * | 2015-09-02 | 2017-03-08 | 中国航空工业第六八研究所 | A kind of software start-up method of control high-voltage motor PWM output |
| CN110768588A (en) * | 2018-07-26 | 2020-02-07 | 比亚迪股份有限公司 | Control method and device for adjusting motor, storage medium and vehicle |
| CN111025832A (en) * | 2019-12-19 | 2020-04-17 | 青岛海信激光显示股份有限公司 | Laser projection equipment and starting method and shutdown method thereof |
| CN111312125A (en) * | 2019-12-19 | 2020-06-19 | 青岛海信激光显示股份有限公司 | Laser projection equipment and starting method and shutdown method thereof |
| CN111312126A (en) * | 2019-12-19 | 2020-06-19 | 青岛海信激光显示股份有限公司 | Laser projection device |
| CN116530843A (en) * | 2023-05-25 | 2023-08-04 | 九阳股份有限公司 | Control method of air fryer |
| US11906890B2 (en) | 2019-12-19 | 2024-02-20 | Hisense Laser Display Co., Ltd | Laser projection apparatus |
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| CN105186932A (en) * | 2014-05-26 | 2015-12-23 | 珠海格力电器股份有限公司 | Method for controlling starting rotating speed of direct current motor |
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| CN105162374B (en) * | 2015-08-27 | 2018-05-01 | 深圳市沛城电子科技有限公司 | The startup control method and device of brshless DC motor |
| CN106487281A (en) * | 2015-09-02 | 2017-03-08 | 中国航空工业第六八研究所 | A kind of software start-up method of control high-voltage motor PWM output |
| CN105322833A (en) * | 2015-11-13 | 2016-02-10 | 广东美的制冷设备有限公司 | Air conditioner, start control method and start control apparatus for direct current motor |
| CN105322833B (en) * | 2015-11-13 | 2018-06-01 | 广东美的制冷设备有限公司 | Air conditioner and the startup control method of direct current generator and startup control device |
| CN110768588A (en) * | 2018-07-26 | 2020-02-07 | 比亚迪股份有限公司 | Control method and device for adjusting motor, storage medium and vehicle |
| CN111025832A (en) * | 2019-12-19 | 2020-04-17 | 青岛海信激光显示股份有限公司 | Laser projection equipment and starting method and shutdown method thereof |
| CN111312125A (en) * | 2019-12-19 | 2020-06-19 | 青岛海信激光显示股份有限公司 | Laser projection equipment and starting method and shutdown method thereof |
| CN111312126A (en) * | 2019-12-19 | 2020-06-19 | 青岛海信激光显示股份有限公司 | Laser projection device |
| US11906890B2 (en) | 2019-12-19 | 2024-02-20 | Hisense Laser Display Co., Ltd | Laser projection apparatus |
| CN116530843A (en) * | 2023-05-25 | 2023-08-04 | 九阳股份有限公司 | Control method of air fryer |
| CN116530843B (en) * | 2023-05-25 | 2024-03-12 | 九阳股份有限公司 | Control method of air fryer |
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