CN207124575U - The drive system of direct current generator - Google Patents
The drive system of direct current generator Download PDFInfo
- Publication number
- CN207124575U CN207124575U CN201720841168.4U CN201720841168U CN207124575U CN 207124575 U CN207124575 U CN 207124575U CN 201720841168 U CN201720841168 U CN 201720841168U CN 207124575 U CN207124575 U CN 207124575U
- Authority
- CN
- China
- Prior art keywords
- signal
- photoelectric coupling
- electrically connects
- direct current
- coupling chip
- 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.)
- Active
Links
Landscapes
- Control Of Electric Motors In General (AREA)
Abstract
The utility model discloses a kind of drive system of direct current generator, including：Direct current generator；Rotating speed measring circuit, obtain the tach signal of the direct current generator；Current detection circuit obtains the current electrical signal of the direct current generator；Position detecting circuit, obtain position signalling；Processor, according to the control information of the direct current generator, the tach signal, the current electrical signal and the position signalling, generate simultaneously output pulse width modulated signal；Drive circuit, according to the break-make of the pulse width modulating signal controlling switch device, to control the running status of the direct current generator.The utility model by lower-cost direct current generator by being applied to servo-control system, discard tradition the semiclosed loop type of drive of direct current generator, using the more preferable closed-loop type of drive of control accuracy, direct current generator is used in servo-drive system to realize, reduce servo-drive system cost, increase the power output of servo-drive system, and the accurate purpose reliably controlled is carried out to direct current generator.
Description
Technical field
The utility model embodiment is related to motor-drive technique, more particularly to a kind of drive system of direct current generator.
Background technology
In Mechanical course field, such as precision machine tool, manufactruing equipment of automobile and robot etc., using servo-drive system accurately
Follow or reappear Machine Movement Process, such as the mechanical displacement of output is accurately tracked by the displacement of input.
Existing servo-drive system is more using the motion of driving servomotor controller tool element.Servomotor belongs to accurate electricity
Machine, there is the characteristics such as electromechanical time constant is small, the linearity is high, rotation is smooth and torque is stable.Thus servomotor is in servo system
, being capable of the speed of control machinery element and position exactly as executive component in system.However, because servomotor belongs to essence
Cipher telegram machine, the requirement to its material, structure and processing technology will be significantly larger than common electric machine.And servomotor is limited by technique
System, it is difficult to accomplish high-power output.
Therefore, the current servo-drive system using servomotor is costly, power is relatively low, can not realize in control cost
Under the premise of increase servo-drive system power output.
Utility model content
The utility model provides a kind of drive system of direct current generator, and lower-cost direct current generator is applied into servo control
System processed, the semiclosed loop type of drive for the direct current generator that discards tradition, using the more preferable closed-loop type of drive of control accuracy, with reality
Direct current generator is used in present servo-drive system, reduces servo-drive system cost, increases the power output of servo-drive system, and to direct current
Motor carries out the accurate purpose reliably controlled.
The utility model embodiment provides a kind of drive system of direct current generator, including：
Direct current generator；
Rotating speed measring circuit, it is connected by encoder with the direct current generator, for detecting the reality of the direct current generator
Rotating speed, obtain the tach signal of the direct current generator；
Current detection circuit, electrically connect with the direct current generator, for detecting the actual current of the direct current generator, obtain
The current electrical signal of the direct current generator；
Position detecting circuit, the position of the position limitation protection part for detecting the direct current generator, obtains position signalling, institute
The motor shaft for stating position limitation protection part and the direct current generator mechanically connects；
Processor, electrically connected respectively with Rotating speed measring circuit, current detection circuit and the position detecting circuit, according to institute
Control information, the tach signal, the current electrical signal and the position signalling of direct current generator are stated, generates and exports pulse
Bandwidth modulation signals；
Drive circuit, electrically connected with the processor, receive the pulse width modulating signal of the processor output,
According to the break-make of the pulse width modulating signal controlling switch device, to control the running status of the direct current generator.
Preferably, the control information includes：The angle that the setting speed of the direct current generator and/or setting rotate.
Preferably, the running status of the direct current generator includes：Start, stop or invert.
Preferably, the drive circuit also includes：Overcurrent protection module, for being set when the current electrical signal more than electric current
During definite value, the drive circuit controls the direct current generator out of service, and exports the first error signal to the processor.
Preferably, the drive circuit also includes：Temperature protection module, for when the temperature for detecting the drive circuit
During higher than desired temperature, the drive circuit controls the direct current generator out of service, and to processor output the
Two error signals.
Preferably, the drive system of the direct current generator also includes photoelectric isolating circuit；
The processor by the photoelectric isolating circuit and the Rotating speed measring circuit, the position detecting circuit and/
Or the drive circuit connection.
Preferably, the tach signal includes the signal of rotating speed first and rotating speed secondary signal, the photoelectric isolating circuit bag
Include the first photoelectric coupling chip and the second photoelectric coupling chip；
The signal input tube pin of the first photoelectric coupling chip electrically connects with the signal of rotating speed first；
The signal output pin of the first photoelectric coupling chip electrically connects with the processor；
First reference voltage input pin of the first photoelectric coupling chip electrically connects with the first power supply signal line；
Second reference voltage input pin of the first photoelectric coupling chip electrically connects with the second power supply signal line；It is described
3rd reference voltage input pin of the first photoelectric coupling chip electrically connects with the second ground signal line；
The signal input tube pin of the second photoelectric coupling chip electrically connects with the rotating speed secondary signal；
The signal output pin of the second photoelectric coupling chip electrically connects with the processor；
First reference voltage input pin of the second photoelectric coupling chip electrically connects with the first power supply signal line；
Second reference voltage input pin of the second photoelectric coupling chip electrically connects with the second power supply signal line；It is described
3rd reference voltage input pin of the first photoelectric coupling chip electrically connects with the second ground signal line.
Preferably, the position signalling includes the signal of position first and position secondary signal, the photoelectric isolating circuit bag
Include the 3rd photoelectric coupling chip and the 4th photoelectric coupling chip；
The signal input tube pin of the 3rd photoelectric coupling chip electrically connects with the signal of position first；
The signal output pin of the 3rd photoelectric coupling chip electrically connects with the processor；
First reference voltage input pin of the 3rd photoelectric coupling chip electrically connects with the first power supply signal line；
Second reference voltage input pin of the 3rd photoelectric coupling chip electrically connects with the 3rd power supply signal line；
3rd reference voltage input pin of the 3rd photoelectric coupling chip electrically connects with second ground signal line；
The signal input tube pin of the 4th photoelectric coupling chip electrically connects with the position secondary signal；
The signal output pin of the 4th photoelectric coupling chip electrically connects with the processor；
First reference voltage input pin of the 4th photoelectric coupling chip electrically connects with the first power supply signal line；
Second reference voltage input pin of the 4th photoelectric coupling chip electrically connects with the 3rd power supply signal line；
3rd reference voltage input pin of the 4th photoelectric coupling chip electrically connects with second ground signal line.
Preferably, the pulse width modulating signal includes the signal of pulse width modulation first and pulse width modulation second
Signal, the photoelectric isolating circuit include the 5th photoelectric coupling chip and the 6th photoelectric coupling chip；
The signal input tube pin of the 5th photoelectric coupling chip electrically connects with the signal of pulse width modulation first；
The signal output pin of the 5th photoelectric coupling chip electrically connects with the drive circuit；
First reference voltage input pin of the 5th photoelectric coupling chip electrically connects with second ground signal line；
Second reference voltage input pin of the 5th photoelectric coupling chip electrically connects with the 4th power supply signal line；
3rd reference voltage input pin of the 5th photoelectric coupling chip electrically connects with first ground signal line；
The signal input tube pin of the 6th photoelectric coupling chip electrically connects with the pulse width modulation secondary signal；
The signal output pin of the 6th photoelectric coupling chip electrically connects with the drive circuit；
First reference voltage input pin of the 6th photoelectric coupling chip electrically connects with second ground signal line；
Second reference voltage input pin of the 6th photoelectric coupling chip electrically connects with the 4th power supply signal line；
3rd reference voltage input pin of the 6th photoelectric coupling chip electrically connects with first ground signal line.
The utility model has abandoned Traditional DC electricity by the way that lower-cost direct current generator is applied into servo-control system
The semiclosed loop type of drive of machine, using the more preferable closed-loop type of drive of control accuracy, solve at present using servomotor
Servo-drive system is costly, power is relatively low, and the power output that can not realize increases servo-drive system on the premise of control cost is asked
Topic, the purpose that direct current generator is used in servo-drive system is realized, has reached reduction servo-drive system cost, has increased servo-drive system
Power output, and the accurate effect reliably controlled is carried out to direct current generator.
Brief description of the drawings
Fig. 1 is the driving system structure schematic diagram for the direct current generator that the utility model embodiment one provides；
Fig. 2 is the drive circuit figure of the drive system of direct current generator in the utility model embodiment two；
Fig. 3 A and Fig. 3 B are the fault-signal display circuits of the drive system of direct current generator in the utility model embodiment two
Figure；
Fig. 4 A~Fig. 4 C are the photoelectric isolating circuit figures of the drive system of direct current generator in the utility model embodiment three.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.It is understood that herein
Described specific embodiment is used only for explaining the utility model, rather than to restriction of the present utility model.Further need exist for
It is bright, for the ease of description, the part related to the utility model rather than entire infrastructure are illustrate only in accompanying drawing.
Embodiment one
Fig. 1 is the driving system structure schematic diagram for the direct current generator that the utility model embodiment one provides, and the present embodiment is fitted
For driving electric cylinders system, specifically include such as lower part：
Direct current generator 10；
Rotating speed measring circuit 50, it is connected by encoder 20 with the direct current generator 10, for detecting the direct current generator
10 actual speed, obtain the tach signal of the direct current generator 10；
Current detection circuit 60, electrically connected with the direct current generator 10, for detecting the actual electricity of the direct current generator 10
Stream, obtains the current electrical signal of the direct current generator 10；
Position detecting circuit 40, the position of the position limitation protection part 30 for detecting the direct current generator 10, obtains position
Signal, the motor shaft of the position limitation protection part 30 and the direct current generator 10 mechanically connect；
Wherein, position detecting circuit 40 includes limit switch, the screw mandrel that the motor shaft of direct current generator 10 mechanically connects,
Guard block 30 is arranged on one end of screw mandrel.Direct current generator 10 operationally, drive screw mandrel linear motion, guard block 30 with
Screw mandrel moves together.When screw lead reaches ultimate range, guard block 30 triggers limit switch, and position detecting circuit 40 is defeated
Go out limit position signal.
Processor 80, it is electrically connected respectively with the Rotating speed measring circuit 50, current detection circuit 60 and position detecting circuit 40
Connect, it is raw according to the control information of the direct current generator 10, the tach signal, the current electrical signal and the position signalling
Into simultaneously output pulse width modulated signal；
Drive circuit 70, electrically connected with the processor 80, receive the pulse width that the processor 80 exports and adjust
Signal processed, according to the break-make of the pulse width modulating signal controlling switch device, to control the operation of the direct current generator 10
State.
Specifically, the control information includes：The angle that the setting speed of the direct current generator and/or setting rotate.
Specifically, the running status of the direct current generator includes：Start, stop or invert.
The operation principle of the drive system of the direct current generator is：Current electrical signal, the rotating speed of detection direct current generator 10 in real time
Signal and position signalling, when guard block 30 does not reach the limit of position, processor 80 is according to current electrical signal, tach signal
With control information running control algolithm, generation pulse width modulating signal makes direct current generator 10 with stable operation.Work as guard block
30 when moving to extreme position, triggers limit switch.Position detecting circuit 40 sends limit position signal to processor 80.Processing
Device receives limit position signal, and the pulse width modulation that being sent to drive circuit 70 makes direct current generator 10 stall or invert is believed
Number, direct current generator 10 is stalled or is inverted, so as to realize the protection to mechanism.Pulse width modulation is to the real-time control of speed
System, a closed-loop control is formed, so as to form the effective accurate speed control in real time of a stabilization.
The technical scheme of the present embodiment, by the way that lower-cost direct current generator is applied into servo-control system, abandon
The semiclosed loop type of drive of Traditional DC motor, using the more preferable closed-loop type of drive of control accuracy, solves current use
The servo-drive system of servomotor is costly, power is relatively low, and can not realize increases servo-drive system on the premise of control cost
Power output problem, the purpose that direct current generator is used in servo-drive system is realized, has reached reduction servo-drive system cost, is increased
The power output of servo-drive system, and the accurate effect reliably controlled is carried out to direct current generator.
Embodiment two
On the basis of the various embodiments described above, the drive system of direct current generator also includes：
Overcurrent protection module, for when the current electrical signal is more than current setting value, the drive circuit to control institute
It is out of service to state direct current generator, and the first error signal is exported to the processor.
Temperature protection module, for when the temperature for detecting the drive circuit is higher than desired temperature, the driving
Circuit controls the direct current generator out of service, and exports the second error signal to the processor.
On the basis of above-mentioned each technical scheme, drive circuit includes H-bridge circuit, it is allowed to large driven current density direct current generator,
And internal resistance is smaller, the heating of drive circuit board can be effectively reduced, realizes that direct current generator is stable and effectively works.
Specifically, by taking Fig. 2 as an example, chip U1 is that H bridges motor drive ic DRV8432, chip U1 pin 10 are numerals
Regulation power supply filters end (VREG), electrical connection electric capacity C107 first end, electric capacity C107 the second end electric connection resistance R102's
First end, resistance R102 the second end electrically connect the first ground signal line, i.e. chip U1 pin 10, electric capacity C107, resistance
R102 and the first ground signal line are connected in series.Chip U1 pin 11, pin 12 and pin 13 is mode selection terminal, chip U1
Pin 11 and pin 13 electrically connect electric capacity C107 the second end, chip U1 pin 12 electrically connects chip U1 pin 10,
It is H bridges current limliting mode of operation arranged side by side to configure chip U1.
Chip U1 pin 22 is half-bridge D output ends (OUT_D), electrical connection inductance L114 first end, inductance L114 the
Two ends electrically connect with binding post J1 chip U1 pin 2, i.e. inductance L114 is series at chip U1 pin 22 and terminals
Between sub- J1 chip U1 pin 2, wherein inductance L114 parameter is 4.7uH/8.7A；Chip U1 pin 20 (BST_D)
Electric capacity C124 first end is electrically connected, electric capacity C124 the second end electrically connects with inductance L114 first end, electric capacity C124 ginseng
Number is 0.1uF/100V, and the pin 22 for being chip U1 provides external capacitor.
Chip U1 pin 25 is half-bridge C output ends (OUT_C), electrical connection inductance L113 first end, inductance L113 the
Two ends electrically connect with binding post J1 chip U1 pin 2, i.e. inductance L113 is series at chip U1 pin 25 and terminals
Between sub- J1 chip U1 pin 2, wherein inductance L113 parameter is 4.7uH/8.7A；Chip U1 pin 27 (BST_C)
Electric capacity C123 first end is electrically connected, electric capacity C123 the second end electrically connects with inductance L113 first end, electric capacity C123 ginseng
Number is 0.1uF/100V, and the pin 25 for being chip U1 provides external capacitor.
Chip U1 pin 30 is half-bridge B output ends (OUT_B), electrical connection inductance L112 first end, inductance L112 the
Two ends electrically connect with binding post J1 chip U1 pin 1, i.e. inductance L112 is series at chip U1 pin 30 and terminals
Between sub- J1 chip U1 pin 1, wherein inductance L112 parameter is 4.7uH/8.7A；Chip U1 pin 28 (BST_B)
Electric capacity C122 first end is electrically connected, electric capacity C122 the second end electrically connects with inductance L112 first end, electric capacity C122 ginseng
Number is that the pin 30 that 0.1uF/100V is chip U1 provides external capacitor.
Chip U1 pin 33 is half-bridge A output ends (OUT_A), electrical connection inductance L111 first end, inductance L111 the
Two ends electrically connect with binding post J1 chip U1 pin 1, i.e. inductance L111 is series at chip U1 pin 33 and terminals
Between sub- J1 chip U1 pin 1, wherein inductance L111 parameter is 4.7uH/8.7A；Chip U1 pin 35 (BST_A)
Electric capacity C121 first end is electrically connected, electric capacity C121 the second end electrically connects with inductance L111 first end, electric capacity C121 ginseng
Number is that the pin 33 that 0.1uF/100V is chip U1 provides external capacitor.
Chip U1 pin 2 is overheat caution signal endWhen drive circuit overheats, chip U1 shut-offs, and
Chip U1 pin 2 exports low level；Chip U1 pin 3 is error signal end When chip U1 excessively streams
Or when under-voltage, chip U1 shut-offs, and chip U1 pin 3 exports low level；Chip U1 pin 4 is half-bridge a-signal input
(PWM_A)；Chip U1 pin 6 is half-bridge B signal input (PWM_B).
Chip P4 is current sensor, and its model can be ACS758 or ACS781, as shown in Fig. 2 with current sensor
Exemplified by chip ACS758 chips, chip P4 pin 1 is power end (VCC), the chip P4 power supply signal line of pin 1 and first
V3_3 is electrically connected, meanwhile, chip P4 pin 1 electrically connects with electric capacity CP41 first end, electric capacity CP41 the second end electrical connection
Second ground signal line.Electric capacity CP41 parameter is 0.1uF.Chip P4 pin 2 is earth terminal (GND), and electrical connection second connects
Earth signal line.Chip P4 pin 3 is current signal output end (VIOUT), electric connection resistance RP41 first end, resistance RP41
The second end output current analog signal ADC7, current analog signal ADC7 electrically connects with processor.Chip P4 pin 4 is electricity
Flow signal input part (IP+), electrical connection inductance L112 the second end.Chip P4 pin 5 is current signal input (IP-),
The sub- J1 of electrical connection terminals chip P4 pin 1.
Further, fault-signal display circuit is configured with drive circuit, the circuit uses transistor amplifier.Figure
3A show heat alarm display circuit, the 4th power supply signal line VCC_5V electric connection resistances R105 first end, resistance R105
The second end electrical connection light emitting diode DOTW anode tap, i.e. resistance R105 and light emitting diode DOTW are connected in series.It is luminous
Diode DOTW cathode terminal electrical connection triode Q1 pin 2.The first of the triode Q1 electric connection resistance R106 of pin 1
End.Resistance R106 the second end electrically connects with chip U1 pin 2.When drive circuit overheats, chip U1 pin 2 exports low
Level, triode Q1 conducting ground connection, light emitting diode DOTW send light.Wherein, triode Q1 model can be S9015_
PNP。
Fig. 3 B show over-current signal display circuit, and circuit connection uses and Fig. 3 A identical connected modes.
The technical scheme of the present embodiment, reach reduction servo-drive system cost, increase the power output of servo-drive system, and
The accurate effect reliably controlled is carried out to direct current generator., can be in direct current by overcurrent protection module and temperature protection module
When motor stalls, the reason for motor stalls is recognized in time, i.e., processor receives the first error signal and is then shown as electric current mistake
Greatly, processor receives the second error signal and is then shown as that temperature is too high or other reasonses.The technical scheme of the present embodiment solves
Need to carry out malfunction elimination to whole system when failure occurs, the problem of workload is big, system can be accurately judged to therefore
The reason for barrier and position, the effect for efficiently solving the system failure is reached.
Embodiment three
Fig. 4 A~Fig. 4 C are the photoelectric isolating circuit figures of the drive system of direct current generator in the utility model embodiment three,
On the basis of the various embodiments described above, the drive system of direct current generator also includes：Photoelectric isolating circuit.The processor passes through described
Photoelectric isolating circuit is connected with the Rotating speed measring circuit, the position detecting circuit and/or the drive circuit.
As shown in Figure 4 A, the photoelectric isolating circuit includes the first photoelectric coupling chip U2；
The signal input tube pin 3 of the first photoelectric coupling chip U2 electrically connects with the first signal of rotating speed HEDS_A；
The signal output pin 5 of the first photoelectric coupling chip U2 electrically connects with the processor；
The first reference voltage input pin 1 of the first photoelectric coupling chip U2 and the first power supply signal line MOTOR_5V
Electrical connection；
The second reference voltage input pin 6 of the first photoelectric coupling chip U2 and the second power supply signal line VCC_5V_
CPU is electrically connected；The 3rd reference voltage input pin of the first photoelectric coupling chip U2 electrically connects with the second ground signal line.
Specifically, chip U2 model high speed photo coupling PS9713, chip U2 pin 1 are supplied by resistance R201 and first
Electrical signal line MOTOR_5V is electrically connected.Chip U2 pin 6 also electrically connects electric capacity C201 and resistance R202 first end, electric capacity
C201 the second end electrically connects the second ground signal line.The chip U2 electric connection resistance R202 of pin 5 the second end, electric capacity C202
First end and resistance R203 first end.Electric capacity C202 the second end and resistance R203 the second end electrical connection the second ground connection letter
Number line.
Second photoelectric coupling chip U3 circuit connecting mode is identical with the first photoelectric coupling chip U2；Second photoelectric coupling
Chip U3 signal input tube pin 3 electrically connects with rotating speed secondary signal HEDS_B.Tach signal includes the orthogonal rotating speed of two-way the
One signal and rotating speed secondary signal, they can not only determine the rotating speed of direct current generator, can also judge that direct current generator rotates
Direction.
Preferably, as shown in Figure 4 B, the photoelectric isolating circuit includes the 3rd photoelectric coupling chip U4；
The signal input tube pin 2 of the 3rd photoelectric coupling chip U4 electrically connects with the position signalling XW_A；
The signal output pin 4 of the 3rd photoelectric coupling chip U4 electrically connects with the processor；
The first reference voltage input pin 1 of the 3rd photoelectric coupling chip U4 and the first power supply signal line
MOTOR_5V is electrically connected；
The second reference voltage input pin 4 of the 3rd photoelectric coupling chip U4 is electrically connected with the 3rd power supply signal line V3_3
Connect；
The 3rd reference voltage input pin 3 of the 3rd photoelectric coupling chip U4 is electrically connected with second ground signal line
Connect.
Specifically, chip U4 model low speed optocoupler TLP291, chip U4 pin 1 are supplied by resistance R401 and first
Electrical signal line MOTOR_5V is electrically connected.Chip U4 pin 4 is electrically connected by resistance R402 with the 3rd power supply signal line V3_3.Core
Piece U4 pin 4 also electrically connects electric capacity C402 first end, and electric capacity C402 the second end electrically connects the second ground signal line.3rd
Power supply signal line V3_3 is electrically connected by electric capacity C401 with the second ground signal line.
4th photoelectric coupling chip U5 signal input tube pin 2 electrically connects with position secondary signal XW_B.Position signalling bag
Include the signal of position first and position secondary signal.Wherein the signal of position first is generated by the first limit switch, for limiting protection
First extreme position of part motion；Position secondary signal is generated by the second limit switch, for limiting guard block motion
Second extreme position.
Preferably, photoelectric isolating circuit can also include the 7th photoelectric coupling chip, the circuit of the 7th photoelectric coupling chip
Connected mode is identical with the 4th photoelectric coupling chip U5, the signal input tube pin of the 7th photoelectric coupling chip and first mistake
Signal OTW is electrically connected.Realize the Phototube Coupling between the first error signal OTW and processor.
Preferably, photoelectric isolating circuit can also include the 8th photoelectric coupling chip, the circuit of the 8th photoelectric coupling chip
Connected mode is identical with the 4th photoelectric coupling chip U5, the signal input tube pin of the 8th photoelectric coupling chip and second mistake
Signal FAULT is electrically connected.Realize the Phototube Coupling between the second error signal FAULT and processor.
Preferably, as shown in Figure 4 C, the photoelectric isolating circuit includes the 5th photoelectric coupling chip U8；
The signal input tube pin 1 of the 5th photoelectric coupling chip U8 and the first signal of pulse width modulation PWM_A_
CTR is electrically connected；
The signal output pin 5 of the 5th photoelectric coupling chip U8 electrically connects with the drive circuit；
The first reference voltage input pin 1 of the 5th photoelectric coupling chip U8 is electrically connected with second ground signal line
Connect；
The second reference voltage input pin 6 of the 5th photoelectric coupling chip U8 and the 4th power supply signal line VCC_5V electricity
Connection；
The 3rd reference voltage input pin 4 of the 5th photoelectric coupling chip U8 is electrically connected with first ground signal line
Connect.
Specifically, chip U8 model high speed photo coupling PS9713, chip U8 pin 1 are supplied by resistance R801 and the 4th
Electrical signal line VCC_5V is electrically connected.Chip U8 pin 6 also electrically connects electric capacity C801 and resistance R802 first end, electric capacity C801
The second end electrically connect the first ground signal line.The chip U8 electric connection resistance R802 of pin 5 the second end, the of electric capacity C802
One end and resistance R803 first end.Electric capacity C802 the second end and resistance R803 the second end electrically connect the first ground signalling
Line.
6th photoelectric coupling chip U9 signal input tube pin 1 is electrically connected with pulse width modulation secondary signal PWM_A_CTR
Connect.
The technical scheme of the present embodiment, reach reduction servo-drive system cost, increase the power output of servo-drive system, and
The accurate effect reliably controlled is carried out to direct current generator.By in processor and drive circuit, Rotating speed measring circuit and position
Detection circuit between photoelectric isolating circuit is set, solve direct current pusher side forceful electric power signal and processor weak electric signal it is direct
Connection, the problem of causing measurement inaccurate or even damage system, effective suppression system noise reached, eliminated earth-return circuit interference
With the normal working effect of stabilization for ensureing system.
Pay attention to, above are only preferred embodiment of the present utility model and institute's application technology principle.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment described here, can carried out for a person skilled in the art various bright
Aobvious change, readjust and substitute without departing from the scope of protection of the utility model.Therefore, although passing through above example
The utility model is described in further detail, but the utility model is not limited only to above example, is not departing from
In the case that the utility model is conceived, other more equivalent embodiments can also be included, and the scope of the utility model is by appended
Right determine.
Claims (9)
- A kind of 1. drive system of direct current generator, it is characterised in that including：Direct current generator；Rotating speed measring circuit, it is connected by encoder with the direct current generator, for detecting the actual speed of the direct current generator, Obtain the tach signal of the direct current generator；Current detection circuit, electrically connect with the direct current generator, for detecting the actual current of the direct current generator, obtain described The current electrical signal of direct current generator；Position detecting circuit, the position of the position limitation protection part for detecting the direct current generator, obtains position signalling, the limit The motor shaft of position guard block and the direct current generator mechanically connects；Processor, electrically connected respectively with Rotating speed measring circuit, current detection circuit and the position detecting circuit, according to described straight Control information, the tach signal, the current electrical signal and the position signalling of motor are flowed, generates simultaneously output pulse width Modulated signal；Drive circuit, electrically connected with the processor, receive the pulse width modulating signal of the processor output, according to The break-make of the pulse width modulating signal controlling switch device, to control the running status of the direct current generator.
- 2. system according to claim 1, it is characterised in that the control information includes：The setting of the direct current generator The angle that rotating speed and/or setting rotate.
- 3. system according to claim 1 or 2, it is characterised in that the running status of the direct current generator includes：Start, Stop or invert.
- 4. system according to claim 1, it is characterised in that the drive circuit also includes：Overcurrent protection module, it is used for When the current electrical signal is more than current setting value, the drive circuit controls the direct current generator out of service, Yi Jixiang The processor exports the first error signal.
- 5. system according to claim 4, it is characterised in that the drive circuit also includes：Temperature protection module, it is used for When the temperature for detecting the drive circuit is higher than desired temperature, the drive circuit controls the direct current generator to stop fortune OK, and to the processor the second error signal is exported.
- 6. system according to claim 1, it is characterised in that also including photoelectric isolating circuit；The processor passes through the photoelectric isolating circuit and the Rotating speed measring circuit, the position detecting circuit and/or institute State drive circuit connection.
- 7. system according to claim 6, it is characterised in that the tach signal includes the signal of rotating speed first and rotating speed the Binary signal, the photoelectric isolating circuit include the first photoelectric coupling chip and the second photoelectric coupling chip；The signal input tube pin of the first photoelectric coupling chip electrically connects with the signal of rotating speed first；The signal output pin of the first photoelectric coupling chip electrically connects with the processor；First reference voltage input pin of the first photoelectric coupling chip electrically connects with the first power supply signal line；Second reference voltage input pin of the first photoelectric coupling chip electrically connects with the second power supply signal line；Described first 3rd reference voltage input pin of photoelectric coupling chip electrically connects with the second ground signal line；The signal input tube pin of the second photoelectric coupling chip electrically connects with the rotating speed secondary signal；The signal output pin of the second photoelectric coupling chip electrically connects with the processor；First reference voltage input pin of the second photoelectric coupling chip electrically connects with the first power supply signal line；Second reference voltage input pin of the second photoelectric coupling chip electrically connects with the second power supply signal line；Described first 3rd reference voltage input pin of photoelectric coupling chip electrically connects with the second ground signal line.
- 8. system according to claim 6, it is characterised in that the position signalling includes the signal of position first and position the Binary signal, the photoelectric isolating circuit include the 3rd photoelectric coupling chip and the 4th photoelectric coupling chip；The signal input tube pin of the 3rd photoelectric coupling chip electrically connects with the signal of position first；The signal output pin of the 3rd photoelectric coupling chip electrically connects with the processor；First reference voltage input pin of the 3rd photoelectric coupling chip electrically connects with the first power supply signal line；Second reference voltage input pin of the 3rd photoelectric coupling chip electrically connects with the 3rd power supply signal line；3rd reference voltage input pin of the 3rd photoelectric coupling chip electrically connects with the second ground signal line；The signal input tube pin of the 4th photoelectric coupling chip electrically connects with the position secondary signal；The signal output pin of the 4th photoelectric coupling chip electrically connects with the processor；First reference voltage input pin of the 4th photoelectric coupling chip electrically connects with the first power supply signal line；Second reference voltage input pin of the 4th photoelectric coupling chip electrically connects with the 3rd power supply signal line；3rd reference voltage input pin of the 4th photoelectric coupling chip electrically connects with second ground signal line.
- 9. system according to claim 6, it is characterised in that the pulse width modulating signal includes pulse width modulation First signal and pulse width modulation secondary signal, the photoelectric isolating circuit include the 5th photoelectric coupling chip and the 6th photoelectricity Coupling chip；The signal input tube pin of the 5th photoelectric coupling chip electrically connects with the signal of pulse width modulation first；The signal output pin of the 5th photoelectric coupling chip electrically connects with the drive circuit；First reference voltage input pin of the 5th photoelectric coupling chip electrically connects with the second ground signal line；Second reference voltage input pin of the 5th photoelectric coupling chip electrically connects with the 4th power supply signal line；3rd reference voltage input pin of the 5th photoelectric coupling chip electrically connects with the first ground signal line；The signal input tube pin of the 6th photoelectric coupling chip electrically connects with the pulse width modulation secondary signal；The signal output pin of the 6th photoelectric coupling chip electrically connects with the drive circuit；First reference voltage input pin of the 6th photoelectric coupling chip electrically connects with second ground signal line；Second reference voltage input pin of the 6th photoelectric coupling chip electrically connects with the 4th power supply signal line；3rd reference voltage input pin of the 6th photoelectric coupling chip electrically connects with first ground signal line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720841168.4U CN207124575U (en) | 2017-07-12 | 2017-07-12 | The drive system of direct current generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720841168.4U CN207124575U (en) | 2017-07-12 | 2017-07-12 | The drive system of direct current generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207124575U true CN207124575U (en) | 2018-03-20 |
Family
ID=61612446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720841168.4U Active CN207124575U (en) | 2017-07-12 | 2017-07-12 | The drive system of direct current generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207124575U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107257218A (en) * | 2017-07-12 | 2017-10-17 | 上海堃捷信息科技有限公司 | The drive system of direct current generator |
| CN109581218A (en) * | 2018-11-13 | 2019-04-05 | 德尔康(上海)运动用品有限公司 | Motor operation monitoring method, system and device |
-
2017
- 2017-07-12 CN CN201720841168.4U patent/CN207124575U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107257218A (en) * | 2017-07-12 | 2017-10-17 | 上海堃捷信息科技有限公司 | The drive system of direct current generator |
| CN109581218A (en) * | 2018-11-13 | 2019-04-05 | 德尔康(上海)运动用品有限公司 | Motor operation monitoring method, system and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107257218A (en) | The drive system of direct current generator | |
| CN207124575U (en) | The drive system of direct current generator | |
| CN106597907A (en) | Driving control circuit and robot | |
| CN202754140U (en) | Digital servo | |
| CN204308952U (en) | The control device of a kind of robot digital rudder controller | |
| CN102053630B (en) | Device and system for controlling deviation correction of brushless direct current (DC) motor | |
| CN101340166A (en) | Communication method for electronic commutation motor controller | |
| CN105553385A (en) | Electric vehicle controller and motor over-temperature protection method thereof | |
| CN106452231A (en) | Brush DC motor driver and control method thereof | |
| CN106246985A (en) | A kind of electric proportional-regulation valve controlled based on pwm signal | |
| CN203519806U (en) | Ultraviolet lamp fault detection device | |
| CN206363107U (en) | A kind of drive control circuit and robot | |
| CN209805707U (en) | Wide application range's brushless DC motor control circuit | |
| CN101439574B (en) | Film-delivering equipment for injection mould | |
| CN105680737A (en) | Deviation correction control system of brushless DC motor | |
| CN206794594U (en) | A kind of safety-type servo-pressing machine control system | |
| CN205283446U (en) | High accuracy stepper motor controller | |
| CN203549065U (en) | Isolated digital type electric actuator controller | |
| Yifei | The Motion Characteristics and Control Circuit of a Reciprocating Electric Jig Saw | |
| CN202530289U (en) | Embroiderer motor control system and embroiderer | |
| CN201926933U (en) | Rectification control device and system with DC brushless motor | |
| CN103248288B (en) | Self-adaptive driver of brushless direct current motor | |
| CN208077477U (en) | A kind of driving of motor and control teaching aid | |
| CN207529218U (en) | A kind of motor control assembly | |
| CN205545049U (en) | Switched reluctance motor speed control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |