CN207069953U - signal source control circuit for brushless motor driver - Google Patents

Abstract

The utility model provides a kind of signal source control circuit for brushless motor driver, including the power module for exporting two output voltage, for receiving the output voltage all the way of power module and carrying out the power supply output module exported again after voltage up-down processing, for receiving power module another way output voltage and obtain after calculating processing and the signal generator module of the default test signal of output and for receiving and amplifying the signal amplification module exported after the default test signal to brushless motor driver, the default test signal includes multichannel hall signal, motor speed control signal PWN and motor positive and inverse control signal F/R.The utility model embodiment can simultaneously output multi-channel hall signal, motor speed control signal PWN and motor positive and inverse control signal F/R with to brushless motor driver carry out accordingly test and test, avoided while the purchase for reducing signal source device and frequently change in test signal source device, it is easy to use and reduce testing cost.

Description

Signal source control circuit for brushless motor driver

Technical field

It the utility model is related to motor driver technical field, more particularly to a kind of signal for brushless unit driver Source control circuit.

Background technology

With the development of brushless electric machine technology, to the quality requirement of brushless motor driver also more and more higher, in brushless electricity Machine driver needs to test brushless motor driver accordingly before dispatching from the factory, such as：High/low temperature is tested or aging is surveyed Examination etc., to ensure the normal work of brushless electric machine.

Existing brushless motor driver usually requires ability normal work after connection brushless electric machine, and brushless electric machine is brushless Motor driver provides three road hall signals to carry out test and degradation accordingly to brushless motor driver, and on the market Also have and sell the various signal source devices for being used to test brushless motor driver, but most of existing signal source device is single The TTL voltage signals of road output（Agilent signal source）, list can only be provided when carrying out various experiments to brushless motor driver One test signal, it is impossible to while three road hall signals, all the way electric machine speed regulation control signal and all the way motor positive and inverse are provided Control signal, signal source device function are single, it is necessary to buy multiple signal source devices and need frequently to change at the trial Different signal source devices, testing cost it is high and in-convenience in use.

Utility model content

The utility model embodiment technical problems to be solved are, there is provided a kind of signal for brushless motor driver Source control circuit, realizes output multi-channel test signal, reduces testing cost and easy to use.

In order to solve the above technical problems, the technical scheme that the utility model embodiment uses is：There is provided a kind of for brushless The signal source control circuit of motor driver, including for exporting the power module of two output voltage and for receiving power supply The output voltage all the way of module simultaneously carries out the power supply output module exported again after voltage up-down processing, the signal source control circuit Also include：

Signal generator module, for receiving power module another way output voltage and obtain after calculating processing and output Default test signal, the default test signal include multichannel hall signal, motor speed control signal PWN and motor positive and inverse control Signal F/R processed；And

Signal amplification module, for being exported after receiving and amplifying the default test signal to brushless motor driver.

Further, the signal generator module includes：

Hall signal for producing and exporting the multichannel hall signal according to power module another way output voltage produces Raw unit；

For producing and exporting the speed-regulating signal of the motor speed control signal PWN according to power module another way output voltage Generation unit；And

For producing according to power module another way output voltage and exporting the motor positive and inverse control signal F/R just Reverse control signal generation unit.

Further, the signal amplification module includes：

The first signal amplification unit of the multichannel hall signal is exported again for receiving, amplifying；

The secondary signal amplifying unit of the motor speed control signal PWN is exported again for receiving, amplifying；And

The 3rd signal amplification unit of the motor positive and inverse control signal F/R is exported again for receiving, amplifying.

Further, the multichannel hall signal is three road hall signals, and the phase of wherein any two-way hall signal Difference is 120 °.

Using above-mentioned technical proposal, the utility model embodiment at least has the advantages that：First, the utility model Embodiment by power module to export two-way voltage, wherein output voltage realizes voltage up-down by power supply output module all the way Exported again afterwards, operating voltage can be provided for other power units；And another way output voltage passes through signal generator module Obtained after carrying out calculating processing and output includes multichannel hall signal, motor speed control signal PWN and motor positive and inverse control letter Number F/R default test signal, finally exported after signal amplification module is by the default test signal amplification to brushless electricity Machine driver signal source control circuit output multi-channel test signal, is not required to being tested accordingly brushless motor driver Avoided while buying multiple signal source devices and frequently change in test signal source device, it is easy to use and reduce test Cost.

Brief description of the drawings

Fig. 1 is the theory structure of signal source control circuit one embodiment that the utility model is used for brushless motor driver Schematic diagram.

Fig. 2 is the principle knot that the utility model is used for another embodiment of the signal source control circuit of brushless motor driver Structure schematic diagram.

Fig. 3 is the principle knot for the signal source control circuit further embodiment that the utility model is used for brushless motor driver Structure schematic diagram.

Fig. 4 is the control method of signal source control circuit one embodiment that the utility model is used for brushless motor driver Flowage structure schematic diagram.

Fig. 5 is the idiographic flow structural representation of step S3 in Fig. 4.

Fig. 6 is the idiographic flow structural representation of step S4 in Fig. 4.

Embodiment

The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.It should be appreciated that following Illustrative examples and explanation are only used for explaining the utility model, are not intended as to restriction of the present utility model, moreover, not rushing In the case of prominent, the feature in embodiment and embodiment in the utility model can be combined with each other.

As shown in Figure 1 to Figure 3, the utility model embodiment provides a kind of signal source for brushless motor driver and controlled Circuit, including for exporting the power module 1 of two output voltage and for receiving the output voltage all the way of power module 1 simultaneously Carry out the power supply output module 2 exported again after voltage up-down processing.

The signal source control circuit also includes：

Signal generator module 3, for receiving the another way output voltage of power module 1 and obtain after calculating processing and defeated Go out default test signal, the default test signal includes multichannel hall signal, motor speed control signal PWN and motor positive and inverse Control signal F/R；And

Signal amplification module 4, for being exported after receiving and amplifying the default test signal to brushless motor driver（Figure It is not shown）.

In a specific embodiment, the input voltage range of the power module 1 is 16V ~ 40V, and the power supply mould Block 1 exports 15V voltages to power supply output module 2 all the way, then by power supply output module 2 realize voltage rise or under Drop, realizes adjustable function, when brushless motor driver no-voltage is powered, can be used for brushless motor driver by the utility model Signal source control circuit in hall signal of the output voltage of power supply output module 2 to motor；The power module 1 it is another Road exports 5V voltages to signal generator module 3 to produce multichannel hall signal, motor speed control signal PWN and motor positive and inverse control Signal F/R processed is used to test brushless motor driver accordingly.

The present embodiment by power module 1 to export two-way voltage, wherein output voltage passes through power supply output module 2 all the way Exported again after realizing voltage up-down, operating voltage can be provided for other power units, and another way output voltage passes through Signal generator module 3 obtains after carrying out calculating processing and output includes multichannel hall signal, motor speed control signal PWN and motor Rotating control signal F/R default test signal, finally after signal amplification module 4 is by the default test signal amplification Export to brushless motor driver to be tested accordingly brushless motor driver, the more drive tests of signal source control circuit output Trial signal, avoided while being not required to buy multiple signal source devices and frequently change in test signal source device, it is easy to use And reduce testing cost.

As shown in Fig. 2 in one alternate embodiment, the signal generator module 3 includes：

Hall signal for producing and exporting the multichannel hall signal according to the another way output voltage of power module 1 produces Raw unit 31；

Speed governing for producing and exporting the motor speed control signal PWN according to the another way output voltage of power module 1 is believed Number generation unit 32；And

For producing according to the another way output voltage of power module 1 and exporting the motor positive and inverse control signal F/R's Rotating control signal generation unit 33.

The present embodiment is produced by hall signal generation unit 31, speed-regulating signal generation unit 32 and rotating control signal Unit 33 produces multichannel hall signal, motor speed control signal PWN and motor positive and inverse control signal F/R respectively, and each unit can Work independently and unitem test is carried out to brushless motor driver so as to realize to provide single test signal, can also be multiple Unit works simultaneously to be realized to provide multiple test signals while carries out multinomial test to brushless motor driver, can be effective Improve testing efficiency.

As shown in Fig. 2 in one alternate embodiment, the signal amplification module 4 includes：

The first signal amplification unit 41 of the multichannel hall signal is exported again for receiving, amplifying；

The secondary signal amplifying unit 42 of the motor speed control signal PWN is exported again for receiving, amplifying；And

The 3rd signal amplification unit 43 of the motor positive and inverse control signal F/R is exported again for receiving, amplifying.

In the specific implementation, first signal amplification unit 41 receives the multichannel of the output of hall signal generation unit 31 suddenly The multichannel hall signal is simultaneously carried out voltage and current amplification by that signal, and final output amplitude is 3.3V ~ 20V, frequency 1Hz ~ 1kHz, dutycycle are 50% multichannel hall signal；The secondary signal amplifying unit 42 receives speed-regulating signal generation unit 32 The motor speed control signal PWN is simultaneously carried out voltage and current amplification by the motor speed control signal PWN of output, and final output amplitude is 3.3V or 5V, frequency are 10kHz ~ 20kHz, and dutycycle is 2% ~ 98% motor speed control signal PWN；And the 3rd signal is put Big unit 43 receive the motor positive and inverse control signal F/R of the output of rotating control signal generation unit 33 and by the motor just Reverse control signal F/R carries out voltage and current amplification, and final output amplitude is that 3.3V, 5V or 0V motor positive and inverse control Signal F/R.

The present embodiment in signal amplification module 4 by being provided with the first signal amplification unit 41, secondary signal amplifying unit 42 and the 3rd signal amplification unit 43 with respectively to multichannel hall signal, motor speed control signal PWN and motor positive and inverse control believe Number F/R carries out electric current and voltage amplification, a kind of signal amplification unit are realized a kind of enlarging function of test signal, can effectively improved The accuracy of each test signal, so as to improve test accuracy.

As shown in figure 3, in one alternate embodiment, the signal amplification module 4 can also include：

The first signal amplification unit 41 of the multichannel hall signal is exported again for receiving, amplifying；And

The of the motor speed control signal PWN and motor positive and inverse control signal F/R is exported again for receiving, amplifying Binary signal amplifying unit 42.

The present embodiment is believed electric machine speed regulation by being provided with secondary signal amplification module 42 in signal amplification module 4 with realizing Number PWN and motor positive and inverse control signal F/R carries out voltage and current enlarging function, simplifies circuit design, reduces cost.

As shown in figure 4, in practical application, the signal source for being used for brushless motor driver using the utility model controls electricity The process steps that road is controlled signal source are as follows：

S1, driving power module output two-way voltage；

S2, exported again after the output voltage all the way of power module output is carried out into voltage up-down；

S3, receive the another way output voltage of power module output and obtain and export after being handled according to preset algorithm calculating Default test signal, the default test signal include multichannel hall signal, motor speed control signal PWN and motor positive and inverse control Signal F/R processed；

S4, receive the default test signal and driven being exported after the default test signal amplification to brushless electric machine Device.

In the specific implementation, as shown in figure 5, step S3 is specifically included：

S31, receive power module output another way output voltage and according to preset algorithm calculating handle after obtain and it is defeated Go out the multichannel hall signal；

S32, receive power module output another way output voltage and according to preset algorithm calculating handle after obtain and it is defeated Go out the motor speed control signal PWN；And

S33, receive power module output another way output voltage and according to preset algorithm calculating handle after obtain and it is defeated Go out the motor positive and inverse control signal F/R.

As shown in fig. 6, step S4 is specifically included：

S41, receive the multichannel hall signal and exported again to brushless motor driver after carrying out enhanced processing；

S42, receive the motor speed control signal PWN and exported again to brushless motor driver after carrying out enhanced processing；With And

S43, receive the motor positive and inverse control signal F/R and export again after enhanced processing and give brushless electric machine driving Device.

In one alternate embodiment, the multichannel hall signal is three road hall signals, and wherein any two-way Hall The phase difference of signal is 120 °.

In a specific embodiment, the multichannel hall signal is three road hall signal HA, HB and HC, and three tunnel is suddenly The phase difference of any two-way hall signal in your signal HA, HB and HC is 120 °, the three of the output of hall signal generation unit 31 Road hall signal HA, HB and HC by the first signal amplification unit 41 carry out voltage and current amplification after output amplitude be 3.3V ~ 20V, frequency are 1Hz ~ 1kHz, and dutycycle 50%, the phase difference of any two-way hall signal is the road hall signals of 120 ° tri- HA, HB and HC.

In the specific implementation, three hall signal lines are connected on brushless electric machine, indicated respectively on three hall signal lines HA, HB and HC, the brushless electric machine winding corresponding with hall signal line are marked with A, B and C to represent corresponding relation, three road Hall letters Number HA, HB and HC represent the positional information of rotor in brushless electric machine, by the way that the accurate positional information of rotor is transmitted into brushless electricity Machine controller, then brushless motor controller is made again judges which two hall signal lines conducting given accordingly, so that brushless Motor normal work.The present embodiment is by by the phase difference of any two-way hall signal in three road hall signal HA, HB and HC 120 ° are set to, the precision that three road hall signal HA, HB and HC represent the positional information of rotor in brushless electric machine can be effectively improved, And then improve the test accuracy to brushless motor driver.

While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art, It is appreciated that these embodiments can be carried out with a variety of changes in the case where not departing from principle of the present utility model and spirit, repaiied Change, replace and modification, the scope of the utility model are limited by appended claims and its equivalency range.

Claims (4)

1. a kind of signal source control circuit for brushless motor driver, including for exporting the power supply of two output voltage Module and the power supply for receiving the output voltage all the way of power module and exported again after voltage up-down processing export mould Block, it is characterised in that：The signal source control circuit also includes：

Signal generator module, for receiving power module another way output voltage and obtain after calculating processing and output is default Test signal, the default test signal include multichannel hall signal, motor speed control signal PWN and motor positive and inverse control letter Number F/R；And

Signal amplification module, for being exported after receiving and amplifying the default test signal to brushless motor driver.

2. the signal source control circuit according to claim 1 for brushless motor driver, it is characterised in that：The letter Number generation module includes：

Hall signal for producing and exporting the multichannel hall signal according to power module another way output voltage produces single Member；

Speed-regulating signal for producing and exporting the motor speed control signal PWN according to power module another way output voltage produces Unit；And

For producing and exporting the rotating of the motor positive and inverse control signal F/R according to power module another way output voltage Control signal generation unit.

3. the signal source control circuit according to claim 1 or 2 for brushless motor driver, it is characterised in that：Institute Stating signal amplification module includes：

The first signal amplification unit of the multichannel hall signal is exported again for receiving, amplifying；

The secondary signal amplifying unit of the motor speed control signal PWN is exported again for receiving, amplifying；And

The 3rd signal amplification unit of the motor positive and inverse control signal F/R is exported again for receiving, amplifying.

4. the signal source control circuit according to claim 1 for brushless motor driver, it is characterised in that：It is described more Road hall signal is three road hall signals, and the phase difference of wherein any two-way hall signal is 120 °.