CN201590800U

CN201590800U - Modulated delay time control system for motor

Info

Publication number: CN201590800U
Application number: CN2009201545950U
Authority: CN
Inventors: 洪银树; 林信男; 彭建亨
Original assignee: Sunonwealth Electric Machine Industry Co Ltd
Current assignee: Sunonwealth Electric Machine Industry Co Ltd
Priority date: 2009-05-27
Filing date: 2009-05-27
Publication date: 2010-09-22
Anticipated expiration: 2019-05-27

Abstract

The utility model relates to a modulated delay time control system used for a motor, which comprises a controlling unit, a driving unit and a motor; the controlling unit is used for outputting at least one control signal according to at least one set signal, and the control signal has modulated delay time; the driving unit is connected to the controlling unit and used for receiving the control signal to generate a driving signal; and the motor is connected to the driving unit and used for controlling the ducting time of the motor according to the driving signal and the modulated delay time. By using the modulated delay time control system, the delay time of the control signal can be modulated, the motor can work with preferable efficiency (for example, current value reduction), and furthermore, the modulated delay time can be regulated according to the set signal, so that the motor can always work with preferable efficiency in different operating states, and the overall efficiency of the motor is further improved.

Description

The modulated delay time control system that is used for motor

Technical field

The utility model relates to a kind of motor control system, in detail, relates to a kind of modulated delay time control system that is used for motor.

Background technology

In the motor control system of routine, at the motor of some fixed rotating speed, sensing element can be arranged on the fixed position, so that motor is with preferred efficient work.Yet for the motor with multisection type rotating speed, the sensing element of described fixed position can't make the motor all can be with preferred efficient work under each rotating speed.In addition, in order to make commutation smoothly, the transistorized control signal of part can be postponed the set time, fix described time of delay, therefore also can't make the motor of multisection type rotating speed all can be with preferred efficient work under different rotating speeds.

Moreover, because the various modes of operation (different temperatures or different voltages etc.) operated sometimes of motor, can not make therefore fixing described time of delay the motor all can be under different modes of operation with preferred efficient work.

Therefore, be necessary to provide a kind of modulated delay time control system that is used for motor of innovating and having progressive to solve the problems referred to above.

The utility model content

The utility model provides a kind of modulated delay time control system that is used for motor, and it comprises: control unit, driver element and motor.Described control unit is exported at least one control signal in order to according at least one setting signal, and described control signal has and can modulate time of delay.Described driver element is connected to described control unit, in order to receive described control signal, produces drive signal.Described motor is connected to described driver element, according to described drive signal and described the modulation time of delay, controls the ON time of described motor.

Utilize modulated delay time control system of the present utility model, can be modulated the time of delay of described control signal, can make motor with preferred efficient (for example: reduce current value) work, and, can adjust described the modulation time of delay according to setting signal, so that motor all can be with preferred efficient work, so that promote the whole efficiency of motor under different modes of operation.

Description of drawings

Fig. 1 shows that the utility model is used for the block schematic diagram of the modulated delay time control system of motor;

Fig. 2 shows that the utility model is used for the circuit diagram of the modulated delay time control system of motor; And

Fig. 3 shows the sequential chart of the utility model embodiment control signal.

Embodiment

With reference to figure 1, it shows that the utility model is used for the block schematic diagram of the modulated delay time control system of motor.The modulated delay time control system 10 that the utility model is used for motor comprises: control unit 11, driver element 12 and motor 13.Control unit 11 is exported at least one control signal in order to according at least one setting signal, and described control signal has and can modulate time of delay.Driver element 12 is connected to control unit 11, in order to receive described control signal, produces drive signal.Motor 13 is connected to driver element 12, according to described drive signal and described the modulation time of delay, and the ON time of control motor 13.

Control unit 11 comprises control circuit 211, can modulate delay output signal generator 212 and commutation signal generator 213, can modulate delay output signal generator 212 and can modulate delay output signal (with reference to P1 and the P2 of figure 2) in order to produce at least one, commutation signal generator 213 is in order to produce at least one commutation signal (with reference to N1 and the N2 of figure 2).Control circuit 211, can to modulate delay output signal generator 212 and commutation signal generator 213 can be other circuit, perhaps can consist of control device 21, and described control device 21 can be microcontroller (Microcontrollor).

Control unit 11 comprises delay switching circuit 22 and reversing switch circuit 23 in addition, wherein delay switching circuit 22 is connected to and can modulates delay output signal generator 212, in order to receiving the described delay output signal of modulating, and produce at least one and can modulate delayed control signal; Reversing switch circuit 23 is connected to commutation signal generator 213, in order to receiving described commutation signal, and produces at least one commutation control signal.

The modulated delay time control system 10 that the utility model is used for motor comprises Hall element 14 in addition, and described Hall element 14 is connected to control unit 11.In the present embodiment, described setting signal is a pulse-width signal, and control unit 11 is adjusted described the modulation time of delay according to described pulse-width signal.In other was used, described setting signal was temperature signal or voltage signal, and control unit 11 can be adjusted described the modulation time of delay according to described temperature signal or voltage signal.

With reference to figure 2, it shows that the utility model is used for the circuit diagram of the modulated delay time control system of motor.The driver element 12 that the utility model is used for the modulated delay time control system 10 of motor comprises the first transistor 121, transistor seconds 122, the 3rd transistor 123 and the 4th transistor 124, the first transistor 121 is connected in series with transistor seconds 122, has the first tie point A; The 3rd transistor 123 and the 4th transistor 124 are connected in series, and have the second tie point B, and the 3rd transistor 123 and the 4th transistor 124 of series connection are connected in parallel with the first transistor 121 of connecting and transistor seconds 122; Motor 13 (representing with motor winding in Fig. 2) is arranged between the first tie point A and the second tie point B.In the present embodiment, described motor is a fan motor, and described motor winding is the fan motor coil.

In the present embodiment, control unit 10 two of outputs can be modulated delayed control signal and two commutation control signals, first can modulate delayed control signal control the first transistor 121, second can modulate delayed control signal controls the 3rd transistor 123, the first commutation control signal control transistor seconds, 122, the second commutation control signals are controlled the 4th transistor 124.

Cooperation is with reference to figure 1 and Fig. 2, delay switching circuit 22 comprises that first postpones switching transistor 221 and second and postpone switching transistor 222, and it is respectively applied for can modulate delayed control signal and described second with described first and can modulate delayed control signal and be provided to the first transistor 121 and the 3rd transistor 123; Reversing switch circuit 23 comprises the first reversing switch transistor 231 and the second reversing switch transistor 232, and it is respectively applied for described first commutation control signal and the described second commutation control signal are provided to transistor seconds 122 and the 4th transistor 124.

With reference to figure 3, it shows the sequential chart of the utility model embodiment control signal.Cooperation is with reference to figure 2 and Fig. 3, and in the present embodiment, first can modulate delay output signal P1 has and can modulate time of delay, and the more described second commutation signal N2 postpones described Td time of delay that modulates.Therefore, described first can modulate delayed control signal also has and can modulate time of delay, and the also more described second commutation control signal postpones described Td time of delay that modulates, and makes the ON time of the first transistor 121 postpone described Td time of delay that modulates than the ON time of the 4th transistor 124.Schematically show described first ON time and described the modulation time of delay that can modulate delay output signal P1 and the described second commutation signal N2 in Fig. 3, actual height electric potential relation needs to decide according to actual circuit.

Similarly, described second can modulate delayed control signal also can have and can modulate time of delay, makes the ON time of the 3rd transistor 123 postpone described the modulation time of delay than the ON time of transistor seconds 122.In addition, definition can be modulated the retardation ratio example, and it is the ratio of described the modulation time of delay (Td) with former ON time (Tc), and wherein said former ON time Tc is not delayed preceding ON time.

Reference table 1, it shows the comparison sheet of the different retardation ratio modulated examples.Modulating the retardation ratio example is 5% o'clock, and its rotating speed is that 2% o'clock rotating speed is roughly the same with modulating the retardation ratio example, but current sinking then is reduced to 0.47A, reduces about 4.1%; Modulating the retardation ratio example is 15% o'clock, and its rotating speed is that 2% o'clock rotating speed is roughly the same with modulating the retardation ratio example also, but current sinking then is reduced to 0.39A, reduces about 20%.That is, when extending the modulated time of delay of control signal, can not influence rotating speed, but can save current drain, to raise the efficiency.Therefore, the described retardation ratio example of modulating can be between 2% to 20%, and preferably, the described retardation ratio example of modulating is between 15% to 20%.

Table 1

Can modulate the retardation ratio example	Turn-on cycle	Rotating speed (rpm)	Electric current (A)	Current difference
Can modulate the retardation ratio example	Turn-on cycle	Rotating speed (rpm)	Electric current (A)	Current difference	2％	50％	5851	0.49
5％	50％	5850	0.47	4.1％	2％	50％	5851	0.49
5％	50％	5850	0.47	4.1％	15％	50％	5850	0.39	20％

Therefore, utilize modulated delay time control system of the present utility model, can be modulated the time of delay of described control signal, can make motor with preferred efficient (for example: reduce current value) work, and, can adjust described the modulation time of delay according to setting signal, so that motor all can be with preferred efficient work, so that promote the whole efficiency of motor under different modes of operation.

The foregoing description only is explanation principle of the present utility model and effect thereof, and unrestricted the utility model.Therefore the those skilled in the art makes amendment to the foregoing description and changes and still do not break away from spirit of the present utility model.Interest field of the present utility model claims as the aforementioned is listed.

Claims

1. a modulated delay time control system that is used for motor is characterized in that, comprising:

Control unit, it exports at least one control signal in order to according at least one setting signal, and described control signal has and can modulate time of delay;

Driver element, it is connected to described control unit, in order to receive described control signal, produces drive signal; And

Motor, it is connected to described driver element, according to described drive signal and described the modulation time of delay, controls the ON time of described motor.

2. the system as claimed in claim 1, it is characterized in that, wherein said control unit comprises control circuit, can modulate delay output signal generator and commutation signal generator, describedly modulate the delay output signal generator for generating at least one can modulate delay output signal, described at least one commutation signal of commutation signal generator for generating.

3. system as claimed in claim 2, it is characterized in that, wherein said control unit comprises delay switching circuit and reversing switch circuit in addition, wherein said delay switching circuit is connected to the described delay output signal generator of modulating, in order to receiving the described delay output signal of modulating, and produce at least one and can modulate delayed control signal; Described reversing switch circuit is connected to described commutation signal generator, in order to receiving described commutation signal, and produces at least one commutation control signal.

4. system as claimed in claim 3 is characterized in that, wherein said driver element comprises the first transistor, transistor seconds, the 3rd transistor and the 4th transistor, and described the first transistor and described transistor seconds are connected in series, and have first tie point; Described the 4th transistor series of described the 3rd transistor AND gate connects, and has second tie point, and the described the first transistor and the described transistor seconds of described the 3rd transistor of series connection and the series connection of described the 4th transistor AND gate are connected in parallel; Described motor is arranged between described first tie point and described second tie point.

5. system as claimed in claim 4, it is characterized in that, two of wherein said control unit outputs can be modulated delayed control signal and two commutation control signals, wherein first can modulate delayed control signal and control described the first transistor, second can modulate delayed control signal controls described the 3rd transistor, the first commutation control signal is controlled described transistor seconds, and the second commutation control signal is controlled described the 4th transistor.

6. system as claimed in claim 4, it is characterized in that, two of wherein said control unit outputs can be modulated delayed control signal and two commutation control signals, wherein first can modulate delayed control signal and control described the first transistor, the second commutation control signal is controlled described the 4th transistor, wherein said first can modulate delayed control signal has and can modulate time of delay, make ON time the more described the 4th transistorized ON time of described the first transistor postpone described the modulation time of delay, second can modulate delayed control signal controls described the 3rd transistor, and the first commutation control signal is controlled described transistor seconds.

7. system as claimed in claim 4, it is characterized in that, two of wherein said control unit outputs can be modulated delayed control signal and two commutation control signals, wherein first can modulate delayed control signal and control described the first transistor, second can modulate delayed control signal controls described the 3rd transistor, the first commutation control signal is controlled described transistor seconds, wherein said second can modulate delayed control signal has and can modulate time of delay, make the ON time of the more described transistor seconds of the described the 3rd transistorized ON time postpone described the modulation time of delay, the second commutation control signal is controlled described the 4th transistor.

8. system as claimed in claim 5, it is characterized in that, wherein said delay switching circuit comprises that first postpones switching transistor and second and postpone switching transistor, and it is respectively applied for provides described first can modulate delayed control signal and described second and can modulate delayed control signal; Described reversing switch circuit comprises the first reversing switch transistor and the second reversing switch transistor, and it is respectively applied for provides described first commutation control signal and the described second commutation control signal.

9. the system as claimed in claim 1 is characterized in that, wherein said control unit links to each other with described driver element, and adjusts described the modulation time of delay according at least one pulse-width signal.

10. the system as claimed in claim 1 is characterized in that, wherein said control unit links to each other with described driver element, and adjusts described the modulation time of delay according at least one temperature signal or voltage signal.

11. the system as claimed in claim 1 is characterized in that, it comprises Hall element in addition, and described Hall element is connected to described control unit.

12. the system as claimed in claim 1 is characterized in that, wherein said motor is a fan motor.