CN206135406U - Servo controller overvoltage protection circuit of releasing - Google Patents
Servo controller overvoltage protection circuit of releasing Download PDFInfo
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- CN206135406U CN206135406U CN201621199232.5U CN201621199232U CN206135406U CN 206135406 U CN206135406 U CN 206135406U CN 201621199232 U CN201621199232 U CN 201621199232U CN 206135406 U CN206135406 U CN 206135406U
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Abstract
The utility model discloses a servo controller overvoltage protection circuit of releasing, set for circuit and comparison circuit including microcontroller, power supply circuit, direct current busbar voltage acquisition circuit, protection threshold value, microcontroller's input termination has AD converting circuit, direct current busbar voltage acquisition circuit's input and dc bus are connected, direct current busbar voltage acquisition circuit's output all is connected with AD converting circuit's input and comparison circuit's input, comparison circuit's input still is connected with the output of protection threshold value settlement circuit, the protection threshold value is set for the output of circuit and still is connected with AD converting circuit's input, comparison circuit's output termination has the excessive pressure bleeder circuit, microcontroller's output and inverter circuit are connected. The utility model discloses on the basis of real -time of guaranteeing to release, having increased the flexibility that the protection threshold voltage that releases set up, increased the excessive pressure protection inefficacy monitoring function that releases simultaneously, improved servo controller's reliability.
Description
Technical field
This utility model belongs to servo controller over-voltage protection technology field, and in particular to a kind of servo controller overvoltage
Release protection circuit.
Background technology
Servo controller is for controlling the equipment that servomotor realizes hi-Fix or pursuit movement.At present, main flow
Servo controller all using microcontroller (single-chip microcomputer, DSP etc.) as control core realize complete control, monitoring and protect
Function.
Servo controller includes control circuit and power circuit.Power circuit generally comprise rectification circuit and with inversion electricity
Road, rectification circuit and inverter circuit are attached by bus (i.e. dc bus), to prevent from occurring load generating during work (such as
Situations such as brake, suitable load) make DC bus-bar voltage too high and cause circuit to damage, typically can bridge between bus by switch electricity
Road constitute leakage path, when detect busbar voltage it is too high after, panel control leakage path conducting, busbar voltage is carried out
Electric discharge so that voltage returns to normality value, then panel control leakage path disconnection.
Current overpressure vent protection is more to be released control using the release hardware of control or fixed threshold of software.
Software is released and controls to carry out DC bus-bar voltage in real time sampling and A/D change-over circuits by micro-controller program
Detection, when DC bus-bar voltage is detected more than the rotection thresholds for setting, control leakage path carries out overpressure vent, reaches guarantor
The purpose of protecting system.But software control of releasing has following deficiency：(1) release protection relative to hardware, reliability is low.When on software
When breaking down, defencive function of releasing is lost；(2) software protection is final or real with respect to hardware protection by hardware action
When property is poor；
The hardware of fixed threshold releases control typically by sampling circuit samples DC bus-bar voltage, by comparator and base
Quasi- level compares, and produces the control signal of control leakage path switch realizing protection of releasing.The hardware of fixed threshold is released control
Make because the reference level that compares is fixed value, therefore the magnitude of voltage of boiled water of releasing is fixed, flexibility ratio is inadequate.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, there is provided a kind of servo
Controller overvoltage is released protection circuit, and its circuit structure is simple, reasonable in design, and it is convenient to realize, is realized using hardware circuit straight
Stream busbar voltage is released management, and on the basis of the real-time that ensures to release, increased that rotection thresholds voltage of releasing arranges is flexible
Property, while increased overpressure vent shielding failure control function, the reliability of servo controller is improve, it is practical, use
Effect is good, is easy to promote the use of.
To solve above-mentioned technical problem, the technical solution adopted in the utility model is：A kind of servo controller overvoltage is let out
Discharge protection circuit, it is characterised in that：The power circuit powered including microcontroller and for each power unit in device, and direct current
Busbar voltage Acquisition Circuit, rotection thresholds initialization circuit and comparison circuit；The power circuit is connected with dc bus, described micro-
The input of controller is terminated with A/D change-over circuits, and the input of the DC bus-bar voltage collection circuit is connected with dc bus,
The outfan of the DC bus-bar voltage collection circuit connects with the input of A/D change-over circuits and the input of comparison circuit
Connect, the input of the comparison circuit is also connected with the outfan of rotection thresholds initialization circuit, the rotection thresholds initialization circuit
Outfan be also connected with the input of A/D change-over circuits, the output of the comparison circuit is terminated with overpressure vent circuit, described
Overpressure vent circuit is connected with dc bus, and the outfan of the microcontroller is connected with inverter circuit, the inverter circuit with
Dc bus connects；The microcontroller, A/D change-over circuits, rotection thresholds initialization circuit and comparison circuit are and power circuit
Outfan connection.
A kind of above-mentioned servo controller overvoltage is released protection circuit, it is characterised in that：The power circuit includes 15V
Voltage conversion circuit, 5V voltage conversion circuits, 3.3V voltage conversion circuits and 1.8V voltage conversion circuits, the 15V voltages turn
Circuit is changed including chip 7815, fast recovery diode D2 and fast recovery diode D3, the 1st pin of the chip 7815 is by electricity
Resistance R24 is connected with the negative electrode of fast recovery diode D2, and nonpolar electric capacity C4 in parallel and polar capacitor C5 ground connection；It is described
The anode of fast recovery diode D2 is connected with dc bus, and the negative electrode of the fast recovery diode D2 is connect by nonpolar electric capacity C3
Ground；The anode of the fast recovery diode D3 is connected with the 3rd pin of chip 7815, the negative electrode of the fast recovery diode D3 with
The 1st pin connection of chip 7815, the 2nd pin ground connection of the chip 7815；3rd pin of the chip 7815 is described
The outfan of 15V voltage conversion circuits, and nonpolar electric capacity C8, polar capacitor C6 in parallel and polar capacitor C7 ground connection；
The 5V voltage conversion circuits include chip 7805 and fast recovery diode D4, and the 1st pin of the chip 7805 passes through resistance
R25 is connected with the outfan of the 15V voltage conversion circuits, and nonpolar electric capacity C9 in parallel and polar capacitor C10 connect
Ground；The anode of the fast recovery diode D4 is connected with the 3rd pin of chip 7805, the negative electrode of the fast recovery diode D4 with
The 1st pin connection of chip 7805, the 2nd pin ground connection of the chip 7805；3rd pin of the chip 7805 is the 5V
The outfan of voltage conversion circuit, and nonpolar electric capacity C14 in parallel and polar capacitor C13 ground connection；The 3.3V voltages
Change-over circuit includes chip PS767D301, resistance R15, polar capacitor C11 and nonpolar electric capacity C12, the chip
1st pin of PS767D301, the 5th pin, the 6th pin, the 11st pin and the 12nd pin with the 5V voltage conversion circuits
Outfan connects, the 2nd pin of the chip PS767D301, the 3rd pin, the 7th～10 pin, the 13rd～16 pin, the 19th～
21 pins, the 26th pin and the 27th pin are grounded, and one end of the resistance R15 is drawn with the 22nd of the chip PS767D301 the
Foot and the 28th pin connect, and one end of the negative pole of the polar capacitor C11 and nonpolar electric capacity C12 is grounded, the resistance R15
The other end of the other end, the positive pole of polar capacitor C11 and nonpolar electric capacity C12 connect and for the 3.3V voltage conversion circuits
Outfan；The 1.8V voltage conversion circuits include chip PS767D301, resistance R16, resistance R23 and polar capacitor C15,
The positive pole of the polar capacitor C15 is connected with the 23rd pin and the 24th pin of the chip PS767D301, the resistance R23
One end and one end of resistance R16 be connected with the 25th pin of the chip PS767D301, the polar capacitor C15's is negative
The other end of pole and resistance R23 is grounded, the other end connection of the positive pole of the polar capacitor C15 and resistance R16 and for described
The outfan of 1.8V voltage conversion circuits.
A kind of above-mentioned servo controller overvoltage is released protection circuit, it is characterised in that：The microcontroller is DSP numbers
Word signal processor TMS320F2808, the A/D change-over circuits are integrated in DSP TMS320F2808
It is internal.
A kind of above-mentioned servo controller overvoltage is released protection circuit, it is characterised in that：The rotection thresholds setting electricity
Road includes multi-turn precision potentiator VR1, precision fixed resister R13 and nonpolar electric capacity C1, the multi-turn precision potentiator VR1
A fixing end be connected with the outfan of power circuit, another fixing end of the multi-turn precision potentiator VR1 with it is accurate
One end connection of fixed resister R13, the sliding end of the multi-turn precision potentiator VR1 is connected with one end of nonpolar electric capacity C1
And for the outfan VBreakSet of rotection thresholds initialization circuit, the other end and nonpolar electricity of the accurate fixed resister R13
The other end for holding C1 is grounded；The outfan VBreakSet of the rotection thresholds initialization circuit and the input of A/D change-over circuits
It is all connected with the input of comparison circuit.
A kind of above-mentioned servo controller overvoltage is released protection circuit, it is characterised in that：The DC bus-bar voltage is adopted
Collector includes resistor voltage divider circuit, the first signal condition for being nursed one's health the fluctuation upper voltage limit of DC bus-bar voltage
The secondary signal modulate circuit that circuit and the fluctuation lower voltage limit to DC bus-bar voltage are nursed one's health, first signal condition
Circuit and secondary signal modulate circuit are connected with the outfan of resistor voltage divider circuit.
A kind of above-mentioned servo controller overvoltage is released protection circuit, it is characterised in that：The resistor voltage divider circuit bag
Resistance R2, resistance R3 and the resistance R4 of series connection are included, one end of resistance R2 is connected with dc bus, one end ground connection of resistance R4, electricity
The connection end of resistance R3 and resistance R4 is the outfan of the resistor voltage divider circuit；First signal conditioning circuit includes chip
First operational amplifier U1A and resistance R12 in TL082, first operational amplifier U1A's in the chip TL082
In-phase input end is connected by resistance R8 with the outfan of the resistor voltage divider circuit, and is grounded by resistance R7, the chip
The inverting input of first operational amplifier U1A in TL082 is grounded by resistance R9, first in the chip TL082
Resistance R10 is connected between the inverting input and outfan of individual operational amplifier U1A, first fortune in the chip TL082
The outfan for calculating amplifier U1A is connected with one end of resistance R12, and the other end of the resistance R12 is first signal condition
The outfan of circuit；The secondary signal modulate circuit includes second operational amplifier U1B and resistance in chip TL082
The in-phase input end of R11, second operational amplifier U1B in the chip TL082 is by resistance R5 and the electric resistance partial pressure
The outfan connection of circuit, and be grounded by resistance R6, second operational amplifier U1B's in the chip TL082 is anti-phase
Input is grounded by resistance R17, inverting input and the output of second operational amplifier U1B in the chip TL082
Resistance R18, the outfan of second operational amplifier U1B in the chip TL082 and one end of resistance R11 are connected between end
Connection, the other end of the resistance R11 is the outfan of the secondary signal modulate circuit；First signal conditioning circuit
The outfan of outfan and the secondary signal modulate circuit is equal with the input of A/D change-over circuits and the input of comparison circuit
Connection.
A kind of above-mentioned servo controller overvoltage is released protection circuit, it is characterised in that：The comparison circuit includes ratio
Compared with device chip LM293, resistance R14 and audion Q1, the homophase of first comparator U2A in the comparator chip LM293
The in-phase input end of input and second comparator U2B is connected with the outfan VBreakSet of rotection thresholds initialization circuit,
The inverting input of first comparator U2A in the comparator chip LM293 is defeated with first signal conditioning circuit
Go out end connection, inverting input and the secondary signal of second comparator U2B in the comparator chip LM293 are nursed one's health
The outfan connection of circuit, first comparator U2A's in one end of the resistance R14 and the comparator chip LM293
The in-phase input end of in-phase input end and second comparator U2B is all connected with, the other end and the comparator of the resistance R14
The outfan of first comparator U2A in chip LM293 and the outfan of second comparator U2B are all connected with, three pole
The outfan of first comparator U2A in the base stage of pipe Q1 and the comparator chip LM293 and second comparator U2B's
Outfan is all connected with, and is connected with the outfan of power circuit by resistance R1, the grounded emitter of the audion Q1, described
The outfan of the current collection of audion Q1 extremely comparison circuit, and be connected with the outfan of power circuit by resistance 19.
A kind of above-mentioned servo controller overvoltage is released protection circuit, it is characterised in that：The overpressure vent circuit bag
Include the switching tube Q2 that releases, sustained diode 1 and Zener diode D5, the grid of the switching tube Q2 that releases by resistance R21 with
The negative electrode connection of Zener diode D5, and be grounded by resistance R20, the company of the negative electrode of the resistance R21 and Zener diode D5
Connect end to be connected with the outfan of comparison circuit, the source electrode of the switching tube Q2 that releases and the anode of Zener diode D5 are grounded,
The drain electrode of the switching tube Q2 that releases is connected by resistance R23 with dc bus, and the resistance R22 and nonpolar electricity by connecting
Hold C2 ground connection, the anode of the sustained diode 1 is connected with the drain electrode of the switching tube Q2 that releases, the moon of the sustained diode 1
Pole is connected with dc bus.
This utility model has compared with prior art advantages below：
1st, circuit structure of the present utility model is simple, reasonable in design, and it is convenient to realize.
2nd, this utility model is accurate using the multi-turn in rotection thresholds initialization circuit by arranging rotection thresholds initialization circuit
Potentiometer, can set rotection thresholds voltage of releasing according to servo controller application scenario, and using hardware circuit control of releasing is realized,
Motility and real-time are taken into account, it is simple to operate.
3rd, this utility model is by arranging microcontroller and A/D change-over circuits, and inverter circuit is controlled, and it is right to increase
Release and protect the monitoring of effectiveness, in the case of shielding failure of releasing, disconnect input and output circuit, it is ensured that system and safety.
4th, this utility model is slightly changed to existing servo controller and is capable of achieving, and exploitativeness is strong, and increases low cost.
5th, busbar voltage can up and down fluctuate near rotection thresholds voltage, and this utility model is by arranging by electric resistance partial pressure electricity
Road, for first signal conditioning circuit nursed one's health of fluctuation upper voltage limit of DC bus-bar voltage and to DC bus-bar voltage
The DC bus-bar voltage collection circuit that constitutes of the secondary signal modulate circuit nursed one's health of fluctuation lower voltage limit, then stagnant ring is set
Comparison circuit, can eliminate the problem that switching tube of releasing caused by busbar voltage fluctuates up and down is frequently switched on, and can extend and release
The service life of switching tube, so as to extend the service life of overpressure vent circuit.
6th, of the present utility model practical, using effect is good, is easy to promote the use of.
In sum, circuit structure of the present utility model is simple, reasonable in design, and it is convenient to realize, is realized using hardware circuit
DC bus-bar voltage is released management, on the basis of the real-time that ensures to release, increased the spirit of rotection thresholds voltage setting of releasing
Activity, while increased overpressure vent shielding failure control function, improves the reliability of servo controller, practical, makes
It is good with effect, it is easy to promote the use of.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of the drawings
Fig. 1 is that a kind of servo controller overvoltage of this utility model is released the schematic block circuit diagram of protection circuit.
Fig. 2 is the circuit theory diagrams of this utility model power circuit.
Fig. 3 is the circuit theory diagrams of this utility model microcontroller and A/D change-over circuits.
Fig. 4 is the circuit theory diagrams of this utility model DC bus-bar voltage collection circuit.
Fig. 5 is the circuit theory diagrams of this utility model rotection thresholds initialization circuit.
Fig. 6 is the circuit theory diagrams of this utility model comparison circuit.
Fig. 7 is the circuit theory diagrams of this utility model overpressure vent circuit.
Description of reference numerals:
1-power circuit；2-microcontroller；3-A/D change-over circuits；
4-DC bus-bar voltage collection circuit；5-rotection thresholds initialization circuit；6-comparison circuit；
7-overpressure vent circuit；8-inverter circuit；9-dc bus.
Specific embodiment
Protection circuit, including microcontroller 2 as shown in figure 1, a kind of servo controller overvoltage of the present utility model is released
It is electric with the power circuit 1 powered for each power unit in device, and the setting of DC bus-bar voltage collection circuit 4, rotection thresholds
Road 5 and comparison circuit 6；The power circuit 1 is connected with dc bus 9, and the input of the microcontroller 2 is terminated with A/D conversions
Circuit 3, the input of the DC bus-bar voltage collection circuit 4 is connected with dc bus 9, the DC bus-bar voltage collection electricity
The outfan on road 4 is all connected with the input of A/D change-over circuits 3 and the input of comparison circuit 6, the comparison circuit 6 it is defeated
Enter end to be also connected with the outfan of rotection thresholds initialization circuit 5, the outfan of the rotection thresholds initialization circuit 5 also turns with A/D
The input connection of circuit 3 is changed, the output of the comparison circuit 6 is terminated with overpressure vent circuit 7, the overpressure vent circuit 7
It is connected with dc bus 9, the outfan of the microcontroller 2 is connected with inverter circuit 8, the inverter circuit 8 and dc bus 9
Connection；The microcontroller 2, A/D change-over circuits 3, rotection thresholds initialization circuit 5 and comparison circuit 6 are defeated with power circuit 1
Go out end connection.
In the present embodiment, as shown in Fig. 2 the power circuit 1 include 15V voltage conversion circuits, 5V voltage conversion circuits,
3.3V voltage conversion circuits and 1.8V voltage conversion circuits, the 15V voltage conversion circuits include chip 7815, two poles of fast recovery
Pipe D2 and fast recovery diode D3, the 1st pin of the chip 7815 is connected by the negative electrode of resistance R24 and fast recovery diode D2
Connect, and nonpolar electric capacity C4 in parallel and polar capacitor C5 ground connection；The anode of the fast recovery diode D2 is female with direct current
Line 9 connects, and the negative electrode of the fast recovery diode D2 is grounded by nonpolar electric capacity C3；The anode of the fast recovery diode D3
It is connected with the 3rd pin of chip 7815, the negative electrode of the fast recovery diode D3 is connected with the 1st pin of chip 7815, described
The 2nd pin ground connection of chip 7815；3rd pin of the chip 7815 is the outfan VDD_ of the 15V voltage conversion circuits
15V, and nonpolar electric capacity C8, polar capacitor C6 in parallel and polar capacitor C7 ground connection；The 5V voltage conversion circuits bag
Chip 7805 and fast recovery diode D4 are included, the 1st pin of the chip 7805 is by resistance R25 and the 15V voltage conversions
The outfan VDD_15V connections of circuit, and nonpolar electric capacity C9 in parallel and polar capacitor C10 ground connection；The fast recovery
The anode of diode D4 is connected with the 3rd pin of chip 7805, the negative electrode of the fast recovery diode D4 and the 1st of chip 7805 the
Pin connects, the 2nd pin ground connection of the chip 7805；3rd pin of the chip 7805 is the 5V voltage conversion circuits
Outfan VDD_5V, and nonpolar electric capacity C14 in parallel and polar capacitor C13 ground connection；The 3.3V voltage conversions electricity
Road include chip PS767D301, resistance R15, polar capacitor C11 and nonpolar electric capacity C12, the 1st of the chip PS767D301 the
Pin, the 5th pin, the 6th pin, the 11st pin and the 12nd pin connect with the outfan VDD_5V of the 5V voltage conversion circuits
Connect, the 2nd pin of the chip PS767D301, the 3rd pin, the 7th～10 pin, the 13rd～16 pin, the 19th～21 pin,
26th pin and the 27th pin are grounded, the 22nd pin and the 28th of one end of the resistance R15 and the chip PS767D301
Pin connects, and one end of the negative pole of the polar capacitor C11 and nonpolar electric capacity C12 is grounded, and the resistance R15's is another
End, the other end of the positive pole of polar capacitor C11 and nonpolar electric capacity C12 connect and for the output of the 3.3V voltage conversion circuits
End 3.3V；The 1.8V voltage conversion circuits include chip PS767D301, resistance R16, resistance R23 and polar capacitor C15, institute
State the positive pole of polar capacitor C15 to be connected with the 23rd pin and the 24th pin of the chip PS767D301, the resistance R23's
One end of one end and resistance R16 is connected with the 25th pin of the chip PS767D301, the negative pole of the polar capacitor C15
It is grounded with the other end of resistance R23, the other end connection of the positive pole of the polar capacitor C15 and resistance R16 and for described
The outfan 1.8V of 1.8V voltage conversion circuits.
In the present embodiment, as shown in figure 3, the microcontroller 2 is DSP TMS320F2808, it is described
A/D change-over circuits 3 are integrated in inside DSP TMS320F2808.When being embodied as, the microcontroller
Device 2 and A/D change-over circuits 3 are connected with the outfan 3.3V of the 3.3V voltage conversion circuits.
In the present embodiment, as shown in figure 5, the rotection thresholds initialization circuit 5 includes multi-turn precision potentiator VR1, precision
One fixing end of fixed resister R13 and nonpolar electric capacity C1, the multi-turn precision potentiator VR1 is defeated with power circuit 1
Go out end connection, another fixing end of the multi-turn precision potentiator VR1 is connected with one end of accurate fixed resister R13, institute
The sliding end for stating multi-turn precision potentiator VR1 is connected and for the defeated of rotection thresholds initialization circuit 5 with one end of nonpolar electric capacity C1
Go out and hold VBreakSet, the other end of the accurate fixed resister R13 and the other end of nonpolar electric capacity C1 are grounded；It is described
The input of the outfan VBreakSet and A/D change-over circuits 3 of rotection thresholds initialization circuit 5 and the input of comparison circuit 6 are equal
Connection.When being embodied as, a fixing end of the multi-turn precision potentiator VR1 and the output of the 3.3V voltage conversion circuits
End 3.3V connections.
In the present embodiment, the DC bus-bar voltage collection circuit 4 is including resistor voltage divider circuit, for dc bus 9
First signal conditioning circuit nursed one's health of fluctuation upper voltage limit of voltage and the fluctuation lower voltage limit to the voltage of dc bus 9 enter
The secondary signal modulate circuit that row is nursed one's health, first signal conditioning circuit and secondary signal modulate circuit are electric with electric resistance partial pressure
The outfan connection on road.
In the present embodiment, as shown in figure 4, the resistor voltage divider circuit includes resistance R2, the resistance R3 and resistance R4 of series connection,
One end of resistance R2 is connected with dc bus 9, one end ground connection of resistance R4, and the connection end of resistance R3 and resistance R4 is the resistance
The outfan VBus_Dsp of bleeder circuit；First signal conditioning circuit includes first operation amplifier in chip TL082
The in-phase input end of device U1A and resistance R12, first operational amplifier U1A in the chip TL082 is by resistance R8 and institute
The outfan VBus_Dsp connections of resistor voltage divider circuit are stated, and is grounded by resistance R7, first fortune in the chip TL082
The inverting input for calculating amplifier U1A is grounded by resistance R9, first operational amplifier U1A's in the chip TL082
Resistance R10, the output of first operational amplifier U1A in the chip TL082 are connected between inverting input and outfan
End is connected with one end of resistance R12, and the other end of the resistance R12 is the outfan VBus_ of first signal conditioning circuit
Up；The secondary signal modulate circuit includes second operational amplifier U1B and resistance R11 in chip TL082, the chip
The in-phase input end of second operational amplifier U1B in TL082 passes through the outfan of resistance R5 and the resistor voltage divider circuit
VBus_Dsp connects, and is grounded by resistance R6, the anti-phase input of second operational amplifier U1B in the chip TL082
End is grounded by resistance R17, the inverting input of second operational amplifier U1B in the chip TL082 and outfan it
Between be connected to resistance R18, the outfan of second operational amplifier U1B in the chip TL082 connects with one end of resistance R11
Connect, the other end of the resistance R11 is the outfan VBus_Down of the secondary signal modulate circuit；First signal is adjusted
The outfan VBus_Up of the reason circuit and outfan VBus_Down of the secondary signal modulate circuit and A/D change-over circuits 3
The input of input and comparison circuit 6 is all connected with.When being embodied as, the resistance R2, resistance R3 and resistance R4 are precision
Resistance, series connection partial pressure is carried out using resistance R2, resistance R3 and resistance R4 to the voltage of dc bus 9.First signal conditioning circuit is
Voltage change ratio is 0.0658 signal conditioning circuit, and secondary signal modulate circuit is electric for the signal condition that voltage change ratio is 0.0694
Road.
In the present embodiment, as shown in fig. 6, the comparison circuit 6 includes comparator chip LM293, resistance R14 and audion
Q1, the in-phase input end of first comparator U2A in the comparator chip LM293 and the homophase of second comparator U2B
Input is connected with the outfan VBreakSet of rotection thresholds initialization circuit 5, first in the comparator chip LM293
The inverting input of individual comparator U2A is connected with the outfan VBus_Up of first signal conditioning circuit, the comparator core
The outfan VBus_Down of the inverting input of second comparator U2B in piece LM293 and the secondary signal modulate circuit
The in-phase input end of first comparator U2A in connection, one end of the resistance R14 and the comparator chip LM293 and
The in-phase input end of second comparator U2B is all connected with, in the other end of the resistance R14 and the comparator chip LM293
The outfan of first comparator U2A and the outfan of second comparator U2B be all connected with, the base stage of the audion Q1 with
The outfan of first comparator U2A in the comparator chip LM293 and the outfan of second comparator U2B connect
Connect, and be connected with the outfan of power circuit 1 by resistance R1, the grounded emitter of the audion Q1, the audion Q1
Current collection extremely comparison circuit 6 outfan BREAK, and be connected with the outfan of power circuit 1 by resistance 19.It is embodied as
When, the base stage of the audion Q1 is connected by resistance R1 with the outfan VDD_5V of the 5V voltage conversion circuits, and described three
The colelctor electrode of pole pipe Q1 is connected by resistance 19 with the outfan VDD_15V of the 15V voltage conversion circuits.The comparator core
8th pin of piece LM293 is connected with the outfan VDD_5V of the 5V voltage conversion circuits, the comparator chip LM293's
4th pin is grounded.
In the present embodiment, as shown in fig. 7, the overpressure vent circuit 7 includes release switching tube Q2, the and of sustained diode 1
Zener diode D5, the grid of the switching tube Q2 that releases is connected by resistance R21 with the negative electrode of Zener diode D5, and is passed through
Resistance R20 is grounded, and the resistance R21 is connected with the connection end of the negative electrode of Zener diode D5 with the outfan of comparison circuit 6, institute
The anode of the source electrode and Zener diode D5 of stating the switching tube Q2 that releases is grounded, and the drain electrode of the switching tube Q2 that releases passes through resistance
R23 is connected with dc bus 9, and the resistance R22 and nonpolar electric capacity C2 ground connection by connecting, the sun of the sustained diode 1
Pole is connected with the drain electrode of the switching tube Q2 that releases, and the negative electrode of the sustained diode 1 is connected with dc bus 9.
Using this utility model carry out servo controller overvoltage release protection when, comprise the following steps：
Step one, power circuit 1 dc bus 9 is exported to its DC bus-bar voltage be converted to the microcontroller 2,
Supply voltage needed for A/D change-over circuits 3, rotection thresholds initialization circuit 5 and comparison circuit 6, and change for microcontroller 2, A/D
Circuit 3, rotection thresholds initialization circuit 5 and comparison circuit 6 are powered；
Step 2, the setting rotection thresholds voltage VBreakSet of operation protection threshold set circuit 5, rotection thresholds setting electricity
Road 5 exports power circuit 1 to exporting after its Voltage Cortrol to rotection thresholds voltage VBreakSet to comparison circuit 6, together
When, rotection thresholds voltage VBreakSet is exported to carry out exporting after A/D conversions to microcontroller 2 to A/D change-over circuits 3；Specifically
It is that rotection thresholds voltage is set by the multi-turn precision potentiator VR1 in regulation rotection thresholds initialization circuit 5 during enforcement
VBreakSet；
The dc bus that resistor voltage divider circuit in step 3, DC bus-bar voltage collection circuit 4 is exported to dc bus 9
Voltage carries out real-time detection, the DC bus-bar voltage for detecting is exported in real time carry out to A/D change-over circuits 3 it is defeated after A/D conversions
Go out to microcontroller 2；Meanwhile, the resistor voltage divider circuit in DC bus-bar voltage collection circuit 4 is electric by the dc bus for detecting
Pressure is exported to the first signal conditioning circuit and secondary signal modulate circuit in DC bus-bar voltage collection circuit 4 simultaneously, described
First signal conditioning circuit exports the real-time of DC bus-bar voltage after nursing one's health the fluctuation upper voltage limit of the voltage of dc bus 9
Sampled value VBus_Up is to comparison circuit 6 and microcontroller 2, fluctuation of the secondary signal modulate circuit to the voltage of dc bus 9
Lower voltage limit exports real-time sampling value VBus_Down of DC bus-bar voltage to comparison circuit 6 and microcontroller after being nursed one's health
2；
Real-time sampling value VBus_Up and VBus_Down and protection threshold of step 4, comparison circuit 6 to DC bus-bar voltage
Threshold voltage VBreakSet is compared, when real-time sampling value VBus_Up of DC bus-bar voltage is more than rotection thresholds voltage
During VBreakSet, comparison circuit 6 produces control signal BREAK of releasing of 5V and exports to overpressure vent circuit 7, works as dc bus
When real-time sampling value VBus_Down of voltage is less than rotection thresholds voltage VBreakSet, comparison circuit 6 produces the output letter of 0V
Number export to overpressure vent circuit 7；
Step 5, when comparison circuit 6 produce 5V control signal BREAK of releasing export to overpressure vent circuit 7 when, overvoltage
Leadage circuit 7 realizes overpressure vent defencive function, when the output signal that comparison circuit 6 produces 0V is exported to overpressure vent circuit 7
When, overpressure vent circuit 7 does not work；
Real-time sampling value VBus_Up and VBus_Down and protection threshold of step 6, microcontroller 2 to DC bus-bar voltage
Threshold voltage VBreakSet is compared, and when in calculating cycle T, when there is any one operating mode in following two operating modes, recognizes
It is set to overpressure vent circuit 7 and occurs in that failure, the control inverter circuit 8 of microcontroller 2 quits work；
The real-time sampling value of operating mode one, rotection thresholds voltage VBreakSet than microcontroller 2 to DC bus-bar voltage
VBus_Up is low, and the DC bus-bar voltage that receives of microcontroller 2 is constant or persistently rises；
The real-time sampling value of operating mode two, rotection thresholds voltage VBreakSet than microcontroller 2 to DC bus-bar voltage
VBus_Down is high, and the DC bus-bar voltage continuous decrease that microcontroller 2 is received.
In the present embodiment, calculating cycle T described in step 6 is 1ms.
The above, is only preferred embodiment of the present utility model, and not this utility model is imposed any restrictions, every
Above example is made any simple modification, change and equivalent structure change according to this utility model technical spirit, still
Belong in the protection domain of technical solutions of the utility model.
Claims (8)
1. a kind of servo controller overvoltage is released protection circuit, it is characterised in that：Including microcontroller (2) and for each in device
The power circuit (1) that power unit is powered, and DC bus-bar voltage collection circuit (4), rotection thresholds initialization circuit (5) and ratio
Compared with circuit (6)；The power circuit (1) is connected with dc bus (9), and the input of the microcontroller (2) is terminated with A/D conversions
Circuit (3), the input of the DC bus-bar voltage collection circuit (4) is connected with dc bus (9), the DC bus-bar voltage
The outfan of Acquisition Circuit (4) is all connected with the input of A/D change-over circuits (3) and the input of comparison circuit (6), the ratio
Also it is connected with the outfan of rotection thresholds initialization circuit (5) compared with the input of circuit (6), the rotection thresholds initialization circuit (5)
Outfan be also connected with the input of A/D change-over circuits (3), the output of the comparison circuit (6) is terminated with overpressure vent electricity
Road (7), the overpressure vent circuit (7) is connected with dc bus (9), the outfan and inverter circuit of the microcontroller (2)
(8) connect, the inverter circuit (8) is connected with dc bus (9)；The microcontroller (2), A/D change-over circuits (3), protection
Threshold set circuit (5) and comparison circuit (6) are connected with the outfan of power circuit (1).
2. release protection circuit according to a kind of servo controller overvoltage described in claim 1, it is characterised in that：The power supply
Circuit (1) includes 15V voltage conversion circuits, 5V voltage conversion circuits, 3.3V voltage conversion circuits and 1.8V voltage conversion circuits,
The 15V voltage conversion circuits include chip 7815, fast recovery diode D2 and fast recovery diode D3, the chip 7815
1st pin is connected by resistance R24 with the negative electrode of fast recovery diode D2, and nonpolar electric capacity C4 in parallel and polarity electricity
Hold C5 ground connection；The anode of the fast recovery diode D2 is connected with dc bus (9), and the negative electrode of the fast recovery diode D2 leads to
Cross nonpolar electric capacity C3 ground connection；The anode of the fast recovery diode D3 is connected with the 3rd pin of chip 7815, the fast recovery
The negative electrode of diode D3 is connected with the 1st pin of chip 7815, the 2nd pin ground connection of the chip 7815；The chip 7815
The 3rd pin be the 15V voltage conversion circuits outfan, and nonpolar electric capacity C8, polar capacitor C6 in parallel and
Polar capacitor C7 is grounded；The 5V voltage conversion circuits include chip 7805 and fast recovery diode D4, the chip 7805
1st pin is connected by resistance R25 with the outfan of the 15V voltage conversion circuits, and nonpolar electric capacity C9 in parallel
With polar capacitor C10 ground connection；The anode of the fast recovery diode D4 is connected with the 3rd pin of chip 7805, the fast recovery
The negative electrode of diode D4 is connected with the 1st pin of chip 7805, the 2nd pin ground connection of the chip 7805；The chip 7805
The 3rd pin be the 5V voltage conversion circuits outfan, and nonpolar electric capacity C14 in parallel and polar capacitor C13
Ground connection；The 3.3V voltage conversion circuits include chip PS767D301, resistance R15, polar capacitor C11 and nonpolar electric capacity
1st pin of C12, the chip PS767D301, the 5th pin, the 6th pin, the 11st pin and the 12nd pin are electric with the 5V
The outfan connection of voltage conversion circuit, the 2nd pin of the chip PS767D301, the 3rd pin, the 7th～10 pin, the 13rd～
16 pins, the 19th～21 pin, the 26th pin and the 27th pin are grounded, one end and the chip of the resistance R15
22nd pin of PS767D301 and the 28th pin connect, one end of the negative pole of the polar capacitor C11 and nonpolar electric capacity C12
It is grounded, the other end of the other end, the positive pole of polar capacitor C11 and nonpolar electric capacity C12 of the resistance R15 connects and for institute
State the outfan of 3.3V voltage conversion circuits；The 1.8V voltage conversion circuits include chip PS767D301, resistance R16, resistance
23rd pin and the 24th pin of R23 and polar capacitor C15, the positive pole of the polar capacitor C15 and the chip PS767D301
Connection, one end of the resistance R23 and one end of resistance R16 are connected with the 25th pin of the chip PS767D301, described
The negative pole of polar capacitor C15 and the other end of resistance R23 are grounded, and the positive pole of the polar capacitor C15 and resistance R16's is another
End connection and for the outfan of the 1.8V voltage conversion circuits.
3. release protection circuit according to a kind of servo controller overvoltage described in claim 1, it is characterised in that：The micro-control
Device (2) processed is DSP TMS320F2808, and the A/D change-over circuits (3) are integrated in the DSP digital signals
Inside processor TMS320F2808.
4. release protection circuit according to a kind of servo controller overvoltage described in claim 1, it is characterised in that：The protection
Threshold set circuit (5) includes multi-turn precision potentiator VR1, precision fixed resister R13 and nonpolar electric capacity C1, the multi-turn
One fixing end of precision potentiator VR1 is connected with the outfan of power circuit (1), and the multi-turn precision potentiator VR1's is another
One fixing end is connected with one end of accurate fixed resister R13, the sliding end of the multi-turn precision potentiator VR1 with it is nonpolar
One end connection of electric capacity C1 and for the outfan VBreakSet of rotection thresholds initialization circuit (5), the accurate fixed resister
The other end of the other end of R13 and nonpolar electric capacity C1 is grounded；The outfan of the rotection thresholds initialization circuit (5)
The input of VBreakSet and A/D change-over circuits (3) and the input of comparison circuit (6) are all connected with.
5. release protection circuit according to a kind of servo controller overvoltage described in claim 1, it is characterised in that：The direct current
Busbar voltage Acquisition Circuit (4) is including resistor voltage divider circuit, for adjusting to the fluctuation upper voltage limit of dc bus (9) voltage
The secondary signal conditioning electricity that first signal conditioning circuit of reason and the fluctuation lower voltage limit to dc bus (9) voltage are nursed one's health
Road, first signal conditioning circuit and secondary signal modulate circuit are connected with the outfan of resistor voltage divider circuit.
6. release protection circuit according to a kind of servo controller overvoltage described in claim 5, it is characterised in that：The resistance
Bleeder circuit includes that resistance R2, the resistance R3 of series connection and one end of resistance R4, resistance R2 are connected with dc bus (9), resistance R4
One end ground connection, the connection end of resistance R3 and resistance R4 is the outfan of the resistor voltage divider circuit；First signal condition
Circuit includes first operational amplifier U1A and resistance R12 in chip TL082, first computing in the chip TL082
The in-phase input end of amplifier U1A is connected by resistance R8 with the outfan of the resistor voltage divider circuit, and is connect by resistance R7
Ground, the inverting input of first operational amplifier U1A in the chip TL082 is grounded by resistance R9, the chip
Resistance R10, the chip TL082 are connected between the inverting input and outfan of first operational amplifier U1A in TL082
In the outfan of first operational amplifier U1A be connected with one end of resistance R12, the other end of the resistance R12 is described
The outfan of the first signal conditioning circuit；The secondary signal modulate circuit includes second operation amplifier in chip TL082
The in-phase input end of device U1B and resistance R11, second operational amplifier U1B in the chip TL082 is by resistance R5 and institute
The outfan connection of resistor voltage divider circuit is stated, and is grounded by resistance R6, second operational amplifier in the chip TL082
The inverting input of U1B is grounded by resistance R17, the anti-phase input of second operational amplifier U1B in the chip TL082
Resistance R18, the outfan and resistance of second operational amplifier U1B in the chip TL082 are connected between end and outfan
One end connection of R11, the other end of the resistance R11 is the outfan of the secondary signal modulate circuit；First signal
The input of the outfan of the outfan of modulate circuit and the secondary signal modulate circuit and A/D change-over circuits (3) and compare
The input of circuit (6) is all connected with.
7. release protection circuit according to a kind of servo controller overvoltage described in claim 5, it is characterised in that：The comparison
Circuit (6) includes comparator chip LM293, resistance R14 and audion Q1, first ratio in the comparator chip LM293
The in-phase input end of in-phase input end and second comparator U2B compared with device U2A with the output of rotection thresholds initialization circuit (5)
End VBreakSet connections, the inverting input of first comparator U2A in the comparator chip LM293 and described first
Signal conditioning circuit outfan connection, the inverting input of second comparator U2B in the comparator chip LM293 with
The outfan connection of the secondary signal modulate circuit, the in one end of the resistance R14 and the comparator chip LM293
The in-phase input end of the in-phase input end of one comparator U2A and second comparator U2B is all connected with, and the resistance R14's is another
The outfan and the outfan of second comparator U2B of first comparator U2A in one end and the comparator chip LM293
It is all connected with, the outfan and of first comparator U2A in the base stage of the audion Q1 and the comparator chip LM293
The outfan of two comparator U2B is all connected with, and is connected with the outfan of power circuit (1) by resistance R1, the audion
The grounded emitter of Q1, the outfan of the current collection extremely comparison circuit (6) of the audion Q1, and by resistance 19 and power supply electricity
The outfan connection on road (1).
8. release protection circuit according to a kind of servo controller overvoltage described in claim 1, it is characterised in that：The overvoltage
Leadage circuit (7) includes the switching tube Q2 that releases, sustained diode 1 and Zener diode D5, the grid of the switching tube Q2 that releases
It is connected with the negative electrode of Zener diode D5 by resistance R21, and is grounded by resistance R20, the resistance R21 and Zener diode
The connection end of the negative electrode of D5 is connected with the outfan of comparison circuit (6), the source electrode and Zener diode of the switching tube Q2 that releases
The anode of D5 is grounded, and the drain electrode of the switching tube Q2 that releases is connected by resistance R23 with dc bus (9), and by series connection
Resistance R22 and nonpolar electric capacity C2 ground connection, the anode of the sustained diode 1 is connected with the drain electrode of the switching tube Q2 that releases, institute
The negative electrode for stating sustained diode 1 is connected with dc bus (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621199232.5U CN206135406U (en) | 2016-11-07 | 2016-11-07 | Servo controller overvoltage protection circuit of releasing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621199232.5U CN206135406U (en) | 2016-11-07 | 2016-11-07 | Servo controller overvoltage protection circuit of releasing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206135406U true CN206135406U (en) | 2017-04-26 |
Family
ID=58577259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621199232.5U Expired - Fee Related CN206135406U (en) | 2016-11-07 | 2016-11-07 | Servo controller overvoltage protection circuit of releasing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206135406U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109391197A (en) * | 2017-08-10 | 2019-02-26 | 深圳市道通智能航空技术有限公司 | Circuit for controlling motor, electric system, electricity is adjusted and unmanned plane |
| CN109412399A (en) * | 2018-11-16 | 2019-03-01 | 天水电气传动研究所有限责任公司 | A kind of high-power water-cooling overvoltage protection and let out can device |
-
2016
- 2016-11-07 CN CN201621199232.5U patent/CN206135406U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109391197A (en) * | 2017-08-10 | 2019-02-26 | 深圳市道通智能航空技术有限公司 | Circuit for controlling motor, electric system, electricity is adjusted and unmanned plane |
| CN109412399A (en) * | 2018-11-16 | 2019-03-01 | 天水电气传动研究所有限责任公司 | A kind of high-power water-cooling overvoltage protection and let out can device |
| CN109412399B (en) * | 2018-11-16 | 2024-03-15 | 天水电气传动研究所集团有限公司 | High-power water-cooling overvoltage protection and energy release device |
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