CN106541372A - Electric tool and its method using travel switch controlled motor rotating speed - Google Patents
Electric tool and its method using travel switch controlled motor rotating speed Download PDFInfo
- Publication number
- CN106541372A CN106541372A CN201510605187.2A CN201510605187A CN106541372A CN 106541372 A CN106541372 A CN 106541372A CN 201510605187 A CN201510605187 A CN 201510605187A CN 106541372 A CN106541372 A CN 106541372A
- Authority
- CN
- China
- Prior art keywords
- travel switch
- motor
- speed
- rotating speed
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Harvester Elements (AREA)
Abstract
The invention discloses a kind of electric tool includes：Operation element；Motor；For the travel switch of user operation；According to the controller of the signal drive motor of travel switch；In the state being on by operation, motor is rotated controller travel switch with a pre-set velocity at once.A kind of method of utilization travel switch controlled motor is also disclosed, is comprised the steps：Read the signal of travel switch；According to the signal drive motor of travel switch；The rotating speed of motor is divided into into initial speed interval and speed governing rotating speed is interval, the interval maximum speed of initial speed is the minimum speed in speed governing rotating speed interval；Initial duty cycle corresponding with the maximum speed in initial speed interval is set.The method speed governing of utilization travel switch controlled motor rotating speed disclosed by the invention is more accurate.Working condition can be rapidly entered using the electric tool of the method, fast response time, operating handle are good.
Description
Technical field
The present invention relates to a kind of electric tool and its method using travel switch controlled motor rotating speed.
Background technology
Electric tool includes motor and operation element.Motor drive operational element rotates implementation tool function.In order to meet the demand of different operating modes, electric tool is typically provided with arrangements for speed regulation, and arrangements for speed regulation are adjusted to the speed of motor.Common arrangements for speed regulation have two kinds, it is a kind of be independently of activate switch outside speed governing dial turn round.The structure is complex.And another kind of travel switch to be integrated in activate switch.According to the speed of the displacement regulation motor of travel switch.
Grass-mowing machine, brush cutter, hay mover etc. mainly realize cutting function as a kind of common electric tool.Cutting type electric tool operationally, if operation element rotating speed compared with will cause cutting section second-rate slowly in addition smoothly cannot realize cutting.And the travel switch of routine its controlled motor speed gradually increases from 0.User needs to press the longer stroke of travel switch and could realize cutting, and electric tool directly can not be operated, and motor speed is lifted relatively slow, and starting time is long, affects the using effect of user.
The content of the invention
A kind of electric tool, including：Operation element, performs instrumental function；Motor, drives operation element to rotate；Travel switch, for user operation；Controller, according to the signal drive motor of travel switch；In the state being on by operation, motor is rotated controller travel switch with a pre-set velocity at once.
Further, controller when travel switch is triggered with one correspondence pre-set velocity initial duty cycle motor, rotating speed of the controller according to signal controlled motor between pre-set velocity and maximum speed of travel switch.
Further, the rotating speed of motor is divided into into initial speed interval and speed governing rotating speed is interval, the interval maximum speed of initial speed is the minimum speed in speed governing rotating speed interval；When the rotating speed of motor is located at initial speed interval, controller is with constant initial duty cycle motor；When the rotating speed of motor is located at speed governing rotating speed interval, dutycycle motor of the controller according to corresponding to the signal of travel switch.
Further, when the rotating speed in motor is located at speed governing rotating speed interval, the dutycycle corresponding to the signal of travel switch is all higher than equal to initial duty cycle.
Further, operation element is rope or the mowing blade of beating the grass；Electric tool also includes：Moving head, for fixing operation element；Operating portion, for user operation；Connecting portion, connection moving head and operating portion；Travel switch is arranged at operating portion.
Another kind of electric tool, including：Operation element, performs instrumental function；Motor, drives operation element to rotate；Travel switch, for user operation；The signal of travel switch is corresponding with the stroke of travel switch；Controller, according to the signal drive motor of travel switch；When controller detects travel switch and is triggered for the first time, with a constant initial duty cycle motor.
Further, after travel switch was triggered in first time, controller chooses the dutycycle motor between initial duty cycle and default most high duty cycle according to the signal of travel switch.
A kind of method of utilization travel switch controlled motor rotating speed, comprises the steps：Read the signal of travel switch；According to the signal drive motor of travel switch；Wherein, the rotating speed of motor is divided into into initial speed interval and speed governing rotating speed is interval, the interval maximum speed of initial speed is the minimum speed in speed governing rotating speed interval；Initial duty cycle corresponding with the maximum speed in initial speed interval is set；
When the rotating speed of motor is located at initial speed interval, with constant initial duty cycle motor；
When the rotating speed of motor is located at speed governing rotating speed interval, the dutycycle motor according to corresponding to travel switch signal.
Further, when the rotating speed in motor is located at speed governing rotating speed interval, the dutycycle corresponding to travel switch signal is all higher than equal to initial duty cycle.
Another kind of method using travel switch controlled motor rotating speed, comprises the steps：S1：The signal of detection travel switch；S2：Judge whether to detect the signal of travel switch；When the signal of travel switch is detected, S3 is gone to；When the signal of travel switch is not detected by, S1 is gone to；S3：Judge whether to detect the signal of travel switch for the first time；When judged result is to be, S4 is gone to；When judged result is no, S5 is gone to；S4：With initial duty cycle motor；S5：With the corresponding dutycycle motor of the signal of travel switch.
Further, initial duty cycle is steady state value, and for the minimum of a value of travel switch signal duty ratio corresponding.
Above scheme makes electric tool rapidly enter working condition, improves operating efficiency.
Description of the drawings
Fig. 1 shows a kind of grass-mowing machine as the embodiment of electric tool of the present invention；
Fig. 2 is the corresponding diagram of the stroke with dutycycle of the travel switch of electric tool in Fig. 1；
Fig. 3 is the corresponding diagram of the time by lower stroke switch with stroke of electric tool in Fig. 1；
Fig. 4 is the schematic diagram in the motor speed interval of electric tool in Fig. 1；
Fig. 5 is the logic diagram of the method for the motor speed that electric tool shown in Fig. 1 is controlled using travel switch.
Specific embodiment
Grass-mowing machine 100 as shown in Figure 1, including：Operation element 10, moving head 20, motor 30, operating portion 40, connecting portion 50, travel switch 60.
Operation element 10 performs instrumental function.Specifically, as shown in figure 1, operation element 10 is rope of beating the grass.In general, operation element 10 might also be to the mowing blade mowed.Beat the grass rope or mowing blade when rotated, realize cutting function.Moving head 20 is used to fix operation element 10.Motor 30 drives moving head 20 to rotate, so as to drive operation element 10 to rotate.Operating portion 40 supplies user operation, operating portion 40 to be provided with handle 41, and user grips handle 41 and grass-mowing machine 100 is controlled.Connecting portion 50 connects moving head 20 and operating portion 40；Specifically, connecting portion 50 includes connecting rod 51, the hollow tubulose of 51 one-tenth of connecting rod.Operating portion 40 is provided with travel switch 60, and user's control travel switch 60 is controlled to grass-mowing machine 100.Travel switch 60 is arranged at operating portion 40.Specifically, travel switch 60 can be controlled when the handle 41 in user's holding operation portion 40.
Grass-mowing machine 100 also includes controller（Figure is not marked）.Travel switch 60 can send signal to controller, and controller reads the signal of travel switch 60, according to the signal drive motor 30 of travel switch 60.Specifically, the signal of travel switch 60 is corresponding with the stroke h of travel switch 60.When i.e. travel switch 60 is pressed into different positions, different signals are sent.It is preset with controller that different dutycycle corresponding from the signal of travel switch 60, the i.e. signal of travel switch 60 are corresponding with the stroke h of travel switch 60, so that as shown in Fig. 2 the different dutycycles of the stroke h correspondences of travel switch 60.Its duty ratio corresponding of maximum h1 of stroke h is n.Specifically, n is 100%.After travel switch 60 is triggered, stroke h increases, corresponding dutycycle increase.The stroke h of travel switch 60 can be the displacement of the angle, or travel switch 60 of the rotation of travel switch 60.Under different dutycycles, motor 30 has different speed, so as to realize using 60 controlled motor of travel switch, 30 speed.Controller is preset with different dutycycle corresponding from the signal of different travel switch 60.Different dutycycles can realize different speed.
As shown in Figures 2 to 4, controller presets toggle speed a, and toggle speed a is as the corresponding dutycycle of pre-set velocity as initial duty cycle m.I.e. initial duty cycle m is not 0.Maximum speed b of correspondence motor 30 when dutycycle is n.Controller is when travel switch 60 is triggered with the initial duty cycle m motor 30 of a correspondence pre-set velocity, rotating speed of the controller according to signal controlled motor 30 between pre-set velocity and maximum speed of travel switch 60.Specifically, pre-set velocity is 4000rpm.I.e. initial toggle speed a is 4000rpm, is not 0.Motor 30 can quickly start to 4000rpm.The relatively low rotating speed that need of work can not be met between 0rpm to 4000rpm can quickly be spent, a higher rotating speed can be rapidly achieved after travel switch 60 is triggered, the starting time of machine is reduced, the rapid-action time of machine is enhanced, using feel more preferably.Speed-regulating switch switchs 60 stroke h 4000 to maximum speed b correspondence course simultaneously, and in the case where stroke h is constant, the scope of controlled speed diminishes, and the accuracy of speed governing is higher.
As shown in figure 3, during at the uniform velocity pressing lower stroke switch 60, the time t that travel switch 60 is pressed and its stroke h is corresponded.As shown in figure 4, initial speed is interval and speed governing rotating speed is interval to be divided into the rotating speed of motor 30, the interval maximum speed of initial speed is the interval minimum speed of speed governing rotating speed；It is 0 to a that initial speed is interval, and it is a to b that speed governing rotating speed is interval.Dutycycle corresponding to the interval maximum speed of initial speed is initial duty cycle m, and when the rotating speed of motor 30 is located at initial speed interval, controller is with constant initial duty cycle m motor 30；Motor 30 can reach speed a corresponding to initial duty cycle m in the short period of time.When the rotating speed of motor 30 is located at speed governing rotating speed interval, dutycycle motor 30 of the controller according to corresponding to the signal of travel switch 60.
Specifically, when mode as shown in Figure 3 at the uniform velocity presses lower stroke switch 60, in the moment that travel switch 60 is pressed, controller is with initial duty cycle m motor 30.Although initial duty cycle m corresponding speed a, due to being affected by the characteristic of motor 30,30 speed of motor can not direct arrival rate a, and as shown in figure 4, rotating speed gradually increases from 0, rotating speed a is quickly increased in the presence of controller.When now continuing to increase the stroke h of travel switch 60, controller increase dutycycle, 30 speed of motor gradually increase from a, and when travel switch 60 is triggered to maximum h1, velocity-stabilization is to maximum b.30 speed of motor no longer continues to increase with the time.When the rotating speed of motor 30 is located at speed governing rotating speed interval, the dutycycle corresponding to the signal of travel switch 60 is all higher than equal to initial duty cycle m.When 30 rotating speed of motor is located at speed governing rotating speed interval, the dutycycle corresponding to 60 signal of travel switch is all higher than equal to initial duty cycle m.
As shown in figure 5, controller is detected to the signal of travel switch 60, whether then interpretation detects the signal of travel switch 60.When the signal of travel switch 60 is not detected by, controller is detected to the signal of travel switch 60 again.When the signal of travel switch 60 is detected, whether interpretation detects the signal of travel switch 60 for the first time.When judged result is to be, i.e. 60 first time of travel switch is triggered, and controller is with initial duty cycle m motor 30.Specifically, initial duty cycle m is steady state value, and which is the minimum of a value of 60 signal duty ratio corresponding of travel switch.When judged result is no, i.e. travel switch 60 is not to be triggered for the first time, signal corresponding dutycycle motor 30 of the controller according to travel switch 60, now the corresponding dutycycle of the signal of travel switch 60 is between initial duty cycle m and default most high duty cycle n.Controller with initial duty cycle or the corresponding dutycycle motor of travel switch signal for a period of time after, again the signal of travel switch is detected.
The basic principles, principal features and advantages of the present invention have been shown and described above.It should be understood by those skilled in the art that, the invention is not limited in any way for above-described embodiment, all technical schemes obtained by the way of equivalent or equivalent transformation, all falls within protection scope of the present invention.
Claims (10)
1. a kind of electric tool, including：
Operation element, performs instrumental function；
Motor, drives the operation element to rotate；
Travel switch, for user operation；
Controller, drives the motor according to the signal of the travel switch；
In the state being on by operation, the controller is driven the motor and is rotated with a pre-set velocity travel switch at once.
2. electric tool according to claim 1, it is characterised in that：
The controller drives the motor, the controller according to the signal of the travel switch pre-set velocity and maximum speed between to control the rotating speed of the motor with the initial duty cycle of a correspondence pre-set velocity when the travel switch is triggered；
The rotating speed of the motor is divided into into initial speed interval and speed governing rotating speed is interval, the interval maximum speed of initial speed is the minimum speed in speed governing rotating speed interval；
When the rotating speed of the motor is located at initial speed interval, the controller drives the motor with constant initial duty cycle；
When the rotating speed of the motor is located at speed governing rotating speed interval, dutycycle of the controller according to corresponding to the signal of the travel switch drives the motor.
3. electric tool according to claim 2, it is characterised in that：
When the rotating speed of the motor is located at speed governing rotating speed interval, the dutycycle corresponding to the signal of the travel switch is all higher than equal to the initial duty cycle.
4. electric tool according to claim 1, it is characterised in that：
The operation element is rope or the mowing blade of beating the grass；
The electric tool also includes：
Moving head, for fixing the operation element；
Operating portion, for user operation；
Connecting portion, connects the moving head and the operating portion；
The travel switch is arranged at the operating portion.
5. a kind of electric tool, including：
Operation element, performs instrumental function；
Motor, drives the operation element to rotate；
Travel switch, for user operation；
The signal of the travel switch is corresponding with the stroke of the travel switch；
Controller, drives the motor according to the signal of the travel switch；
When the controller detects the travel switch and is triggered for the first time, the motor is driven with a constant initial duty cycle.
6. electric tool according to claim 5, it is characterised in that：
After the travel switch was triggered in first time, the dutycycle that the controller is chosen according to the signal of the travel switch between the initial duty cycle and default most high duty cycle drives the motor.
7. a kind of method of utilization travel switch controlled motor rotating speed, comprises the steps：
Read the signal of the travel switch；
The motor is driven according to the signal of the travel switch；
Wherein,
The rotating speed of the motor is divided into into initial speed interval and speed governing rotating speed is interval, the interval maximum speed of the initial speed is the interval minimum speed of the speed governing rotating speed；
Initial duty cycle corresponding with the maximum speed in initial speed interval is set；
When the rotating speed of the motor is located at initial speed interval, the motor is driven with constant initial duty cycle；
When the rotating speed of the motor is located at speed governing rotating speed interval, the dutycycle according to corresponding to the signal of the travel switch drives the motor.
8. according to claim 7 using the method for travel switch controlled motor rotating speed, it is characterised in that：
When the rotating speed of the motor is located at speed governing rotating speed interval, the dutycycle corresponding to the signal of the travel switch is all higher than equal to initial duty cycle.
9. a kind of method of utilization travel switch controlled motor rotating speed, comprises the steps：
S1：Detect the signal of the travel switch；
S2：Judge whether to detect the signal of the travel switch；When the signal of the travel switch is detected, S3 is gone to；When the signal of the travel switch is not detected by, S1 is gone to；
S3：Judge whether to detect the signal of the travel switch for the first time；When judged result is to be, S4 is gone to；When judged result is no, S5 is gone to；
S4：The motor is driven with initial duty cycle；
S5：The motor is driven with the corresponding dutycycle of the signal of the travel switch.
10. the method for utilization travel switch controlled motor rotating speed according to claim 9, it is characterised in that：
The initial duty cycle is steady state value, and the minimum of a value of the signal duty ratio corresponding for the travel switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510605187.2A CN106541372A (en) | 2015-09-21 | 2015-09-21 | Electric tool and its method using travel switch controlled motor rotating speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510605187.2A CN106541372A (en) | 2015-09-21 | 2015-09-21 | Electric tool and its method using travel switch controlled motor rotating speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106541372A true CN106541372A (en) | 2017-03-29 |
Family
ID=58364579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510605187.2A Pending CN106541372A (en) | 2015-09-21 | 2015-09-21 | Electric tool and its method using travel switch controlled motor rotating speed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106541372A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110739890A (en) * | 2018-07-02 | 2020-01-31 | 苏州宝时得电动工具有限公司 | speed control method of electric tool and electric tool |
| CN110875697A (en) * | 2018-08-29 | 2020-03-10 | 苏州宝时得电动工具有限公司 | Intelligent speed regulation method for electric tool, electric tool and storage medium |
| CN113141000A (en) * | 2020-01-19 | 2021-07-20 | 苏州宝时得电动工具有限公司 | Motor control method, motor control device, electric tool and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005070625A1 (en) * | 2004-01-22 | 2005-08-04 | Robert Bosch Gmbh | Electric hand-held power tool having a memory function |
| CN201266897Y (en) * | 2008-08-06 | 2009-07-01 | 比亚迪股份有限公司 | Motor variable-speed drive circuit |
| CN101700742A (en) * | 2009-10-28 | 2010-05-05 | 洛阳乾禾仪器有限公司 | Vehicle body braking electrical power generating system |
| CN203660929U (en) * | 2013-12-19 | 2014-06-18 | 佛山市顺德区美的电热电器制造有限公司 | Electromotor starting device and electromotor |
| CN104218868A (en) * | 2013-05-30 | 2014-12-17 | 南京德朔实业有限公司 | Rotational speed control method of impact-type fastening tool |
| JP2015024486A (en) * | 2013-07-29 | 2015-02-05 | 日立工機株式会社 | Electric tool |
-
2015
- 2015-09-21 CN CN201510605187.2A patent/CN106541372A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005070625A1 (en) * | 2004-01-22 | 2005-08-04 | Robert Bosch Gmbh | Electric hand-held power tool having a memory function |
| CN201266897Y (en) * | 2008-08-06 | 2009-07-01 | 比亚迪股份有限公司 | Motor variable-speed drive circuit |
| CN101700742A (en) * | 2009-10-28 | 2010-05-05 | 洛阳乾禾仪器有限公司 | Vehicle body braking electrical power generating system |
| CN104218868A (en) * | 2013-05-30 | 2014-12-17 | 南京德朔实业有限公司 | Rotational speed control method of impact-type fastening tool |
| JP2015024486A (en) * | 2013-07-29 | 2015-02-05 | 日立工機株式会社 | Electric tool |
| CN203660929U (en) * | 2013-12-19 | 2014-06-18 | 佛山市顺德区美的电热电器制造有限公司 | Electromotor starting device and electromotor |
Non-Patent Citations (1)
| Title |
|---|
| 李小艳: "PWM控制技术在直流无刷电机调速***中的应用", 《火控雷达技术》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110739890A (en) * | 2018-07-02 | 2020-01-31 | 苏州宝时得电动工具有限公司 | speed control method of electric tool and electric tool |
| CN110739890B (en) * | 2018-07-02 | 2023-05-09 | 苏州宝时得电动工具有限公司 | Speed control method of electric tool and electric tool |
| CN110875697A (en) * | 2018-08-29 | 2020-03-10 | 苏州宝时得电动工具有限公司 | Intelligent speed regulation method for electric tool, electric tool and storage medium |
| CN113141000A (en) * | 2020-01-19 | 2021-07-20 | 苏州宝时得电动工具有限公司 | Motor control method, motor control device, electric tool and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106576569B (en) | Electric tool and control method thereof | |
| CN105473287B (en) | Electric tool | |
| CN104175267B (en) | Electric tool and control method thereof | |
| CN106541372A (en) | Electric tool and its method using travel switch controlled motor rotating speed | |
| CN103812390A (en) | Method used for starting brushless direct current motor and applied to mixer and mixer | |
| CN106208896B (en) | Driving method and system under the unconventional working system of oil pumper | |
| US20210276217A1 (en) | Chain saw, power tool and control method thereof | |
| CN101860310A (en) | Drive control circuit and method of series DC machine for pitch control system | |
| CN101373944B (en) | Driver for brushless DC motor | |
| CN107565854B (en) | Impact starting method and system for brushless direct current motor of electric tool | |
| CN205792320U (en) | A kind of brushless DC motor control circuit | |
| CN201178395Y (en) | Automatic motor controlling apparatus by remote network | |
| CN201708756U (en) | Driving device of series excited DC motor of variable paddle control system | |
| CN101860311B (en) | Drive device of series DC machine for pitch control system | |
| CN106416588A (en) | Grass trimmer and control method thereof | |
| TWI723912B (en) | Electric tool and its control method | |
| CN202628572U (en) | Elevator room fan system | |
| CN103301925A (en) | Speed-changing anti-blocking anti-jamming paper shredder circuit and control method of motor thereof | |
| CN103541159B (en) | A kind of novel energy-conserving industrial sewing machine | |
| CN202818206U (en) | Brush direct current motor control driver | |
| CN202550948U (en) | Dual-mode control device for direct current brushless motor | |
| CN109361336A (en) | Switch reluctance machine drive method | |
| CN104617853A (en) | Pruning machine speed regulation control method | |
| CN207200603U (en) | Electric tool brshless DC motor impacting start system | |
| CN111564933B (en) | Electric tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170329 |
|
| RJ01 | Rejection of invention patent application after publication |