CN100462686C - Synchro/rotary transformer-analog DC voltage transforming method - Google Patents
Synchro/rotary transformer-analog DC voltage transforming method Download PDFInfo
- Publication number
- CN100462686C CN100462686C CNB2006100379831A CN200610037983A CN100462686C CN 100462686 C CN100462686 C CN 100462686C CN B2006100379831 A CNB2006100379831 A CN B2006100379831A CN 200610037983 A CN200610037983 A CN 200610037983A CN 100462686 C CN100462686 C CN 100462686C
- Authority
- CN
- China
- Prior art keywords
- voltage
- angle
- signal
- output
- digital
- 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
Images
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The analog dc voltage conversion method with synchro/resolver comprises: converting the axial angle of synchro/resolver into parallel natural binary O for output; amplifying the digital angle O with FPGA PLC to increase or decrease its output step for signal amplification or minification and output to a digital-analog dc voltage converter with a DAC, a reference power and a operational amplifier to complete the conversion. This invention has high reliability while low consumption.
Description
Technical field
The present invention relates to a kind of selsyn signal/signals of rotating transformer be carried out the voltage processing, and selsyn signal/signals of rotating transformer is directly changed into the method that instrument is controlled needed analog DC voltage signal.
Background technology
Selsyn is a kind of induction type electromechanical compo, is mainly used in automatic control, transmits and calculate in the answer system synchronously.It can be transformed to the corner of rotating shaft electric signal or electric signal is transformed to the corner of rotating shaft, realizes remote transmission, reception and the conversion of angle-data, reaches the purpose of automatic indication angle, position, distance and instruction.
Rotary transformer is the signal element that a kind of output voltage changes with angle of rotor.When field copper during with the alternating voltage excitation of certain frequency, the voltage of output winding is tied to form sine with the functional relationships of angle of rotor, cosine function concerns.It is mainly used in coordinate transform, triangulo operation and angle-data transmission.
Autosyn/rotary transformer is as shaft angle displacement measurement element, has measuring accuracy height, simple in structure, reliable, be mainly used in all very high environment of precision prescribed, reliability, compare with other angle measurement method, autosyn/rotary transformer is used for measurement of angle and has remarkable advantages.Autosyn/rotary transformer is as the axis angle measurement element, for automatic control system provides low-cost, high-precision position transducer.And in industrial detection control field, often need that selsyn signal/signals of rotating transformer is converted to analog DC voltage and directly carry out the instrument Detection ﹠ Controling.
At present, autosyn/rotary transformer-data-converting block is adopted in autosyn/rotary transformer-DC voltage conversion, D/A converter, reference power supply and amplifier are realized, by autosyn/rotary transformer-data-converting block shaft angle signal is transformed into the digital angle amount, pass through D/A converter, reference power supply and amplifier, it is the d. c. voltage signal of mould that digital angle signal is transformed into the reference power supply, the d. c. voltage signal that this mode realizes, system adopts split-type structural, need to use a large amount of resolution elements inevitably, often have following three defectives:
1, precision is low, during the D/A conversion, by analogue amplifier signal and error is together amplified, and output voltage error is bigger, simultaneously, adopts resolution element, and it is big disturbed by outer signals, the outside reference poor stability, and the output voltage precision is not high.
2, volume is big, and element distributes and relatively disperses, and can not realize the system element high-density installation, and volume ratio is bigger.
3, poor reliability has been used a large amount of resolution elements, and integrated level is low, has reduced the reliability of system.
Summary of the invention
Technical matters to be solved by this invention is at the deficiencies in the prior art, and a kind of autosyn/rotary transformer-analog DC voltage transforming method is provided, and it can overcome above-mentioned defective, and the analog DC voltage of output is directly proportional with the angle of input.
Technical matters to be solved by this invention is to realize by following technical scheme.The present invention is a kind of autosyn/rotary transformer-analog DC voltage transforming method, is characterized in, selsyn signal/signals of rotating transformer carries out the Signal Spacing conversion through miniature isolating transformer, produces one group of cosine and sine signal V
1And V
2, the digital angle φ that produces with up-down counter multiplies each other in the sine and cosine multiplier, obtains signal V
3, V
4Error signal kEoSin of output behind error amplifier (θ-φ), the closed loop that this error signal is formed through phase-sensitive demodulator, integrator, voltage controlled oscillator and up-down counter, seek the Sin (zero point of θ-φ), when this process is finished, VSin (θ-φ)＜1LSB, autosyn/rotary transformer shaft angle θ converts the up-down counter numeral angle φ output of parallel natural binary code form to; Export digital angle φ and digital angle φ is carried out digital processing and amplifying through the FPGA Programmable Logic Controller, make the digital angle of output step-length increase or reduce, reach the amplification of signal or dwindle, the digital angle σ of FPGA Programmable Logic Controller output is transported to the digital-analogue dc voltage changer of being made up of D/A converter, reference power supply and operational amplifier, become analog DC voltage signal Vo, finish shaft angle-DC voltage translation function, the digital-analogue dc voltage changer is provided with voltage gain and total null voltage adjustment; (among the θ-φ), k is a no-load voltage ratio, and Eo is the amplitude of reference voltage, and θ is the autosyn/rotary transformer shaft angle, and φ is the up-down counter numeral angle of parallel natural binary code form at kEoSin.
Technical matters to be solved by this invention can also further realize by following technical scheme.Above-described a kind of autosyn/rotary transformer-analog DC voltage transforming method, be characterized in, in the FPGA Programmable Logic Controller, the digital angle φ signal of input is selected control through mode, the digital angle φ ' of output is increased and linear increasing or linear the minimizing with input angle φ, after the design of arithmetic circuity realization pipelining, the output voltage of setting and the digital angle φ ' of input carry out multiplier computing and signal Processing, increase or reduce to export the step-length of digital angle signal, realize the amplification of digital signal or dwindle; Described multiplier is provided with reference clock and controls.
Technical matters to be solved by this invention can also further realize by following technical scheme.Above-described a kind of autosyn/rotary transformer-analog DC voltage transforming method, be characterized in, for the system that needs zero shift, the deviation angle tolerance ρ of input is by the FPGA Programmable Logic Controller, make deviation angle tolerance ρ and superpose through full adder by the digital angle after the signal Processing, realize finishing the skew of zero signal between the null position biasing scope-180 °-+180 °, described full adder is realized the pipelining design by arithmetic circuity; Enable control signal control output latch, make the angle output of skew numeral or the shutoff of full adder output; Described full adder is provided with reference clock and controls.
Be specifically addressed below.
1.1 autosyn/rotary transformer-digital conversion technique
Circuit is made up of seven parts such as miniature isolating transformer, sine and cosine multiplier, error amplifier, phase-sensitive demodulator, integrator, voltage controlled oscillator, up-down counters, has adopted 2 rank servo loops, the digital angle signal Continuous Tracking input shaft angle of output.If selsyn signal input, selsyn 3 line signals through miniature isolating transformer just converting to, the voltage signal V of cosine form
1And V
2
V
1＝kEoSin?ω?t?Sinθ
V
2＝kEoSin ω?t?Cosθ
θ is the shaft angle of selsyn;
K is a no-load voltage ratio;
E0 is the amplitude of reference voltage;
ω is a carrier frequency, both the angular frequency of excitation voltage.
If the signals of rotating transformer input, rotary transformer 4 line signals only rise and isolate and hypotensive effect behind isolating transformer.
Suppose that the current digital angle of up-down counter is φ.So, V
1, V
2The digital angle φ of signal and up-down counter multiplies each other V in the sine and cosine multiplier
1Multiply by cos φ, V2 multiply by sin φ and obtains voltage signal V
3And V
4:
V
3＝kEoSin?ω?t?SinθCosφ
V
4＝kEoSin?ω?t?CosθSinφ
These signals subtract each other through error amplifier and obtain:
V
3-V
4＝kEoSin?ω?t(sinθCosφ-CosθSinφ)＝kEoSin?ω?tSin(θ-φ)
(zero point of θ-φ) such as a closed loop system looks Sin who forms through phase-sensitive demodulator, integrator, voltage controlled oscillator and up-down counter etc.In the accuracy rating of converter regulation, up-down counter digital angle φ at this moment equals the shaft angle θ of autosyn/rotary transformer, with parallel natural binary code form output.
1.2 FPGA PLC technique
Adopt FPGA field-programmable controller technology design digital amplifier, its principle as shown in Figure 2.The signal of input is selected control through mode, and described mode selects control to have 2 kinds, and a kind of is that the zero-bit digital voltage is zero, and exporting digital angle φ ' increases and linear increasing with input angle φ; Another kind is that the zero-bit digital voltage is a maximal value, exporting digital angle φ ' increases and linear the minimizing with input angle φ, carry out multiplier computing and signal Processing by the output voltage of setting and the digital angle φ ' of input, increase or reduce to export the step-length of digital angle signal, realize the amplification of digital signal or dwindle.Digital amplifier is compared with analogue amplifier, and the voltage signal linearity of amplification is good, and the zero-point voltage error does not change with amplifier.For the system that needs zero shift, input deviation angle tolerance, the digital angle stack by full adder and conversion realizes the skew of null position.
In order significantly to improve the speed of system.Multiplier and full adder are realized the pipelining design by arithmetic circuity, and the logical operation that will finish in a clock is divided into the less operation of several steps, and insert the data throughput that several clock period improve system.
1.3 digital-analogue dc voltage conversion technology
The digital angle σ of FPGA Programmable Logic Controller output binary code, after buffering, be connected to the digital-analogue dc voltage changer, converter inside has the high precision reference power supply and the operational amplifier of D/A converter, band temperature compensation, has finished the conversion of parallel natural binary code to the analog DC voltage signal.The gain of output signal voltage and zero point can be regulated by potentiometer.Output dc voltage is directly proportional with the digital angle of the autosyn/rotary transformer of input, and the cycle changes.
1.4 technical performance index
Autosyn/rotary transformer-DC voltage conversion performance index is as shown in table 1.
Table 1:
Compared with prior art, the present invention is based on autosyn/rotary transformer-digital conversion technique, utilize that its tracing property is strong, speed is fast, the conversion accuracy advantages of higher, the digital-analogue dc voltage conversion technology of combined high precision and FPGA control technology able to programme realize that selsyn signal/signals of rotating transformer converts the analog DC voltage signal to.The present invention adopts hybrid integration technology, has the integrated level height, and is low in energy consumption, characteristics such as reliability height.The present invention adopts FPGA Controlled by Programmable Controller output analog DC voltage size, and the analog DC voltage of output is directly proportional with the angle of input.
Description of drawings
Fig. 1 is autosyn/rotary transformer-analog DC voltage transfer principle block diagram.
Fig. 2 is a FPGA field-programmable technical design digital amplifier schematic diagram.
Fig. 3 is that output voltage is not more than ± relation of input shaft angle-output dc voltage of 10V.
Fig. 4 is the relation of the input shaft angle-output dc voltage of the leading ρ angle of Fig. 3.
Fig. 5 is the lag behind relation of input shaft angle-output dc voltage of ρ angle of Fig. 3.
Fig. 6 is the pass that Fig. 3 exchanges the input shaft angle-output dc voltage behind input signal S1 and the S3
System.
Fig. 7 is the relation of angle input shaft angle-output dc voltage of the leading ρ of Fig. 6.
Fig. 8 is the lag behind relation of input shaft angle-output dc voltage of ρ angle of Fig. 6.
Fig. 9 is an output voltage greater than the relation of input shaft angle-output dc voltage of ± 10V.
Figure 10 is the pass that Fig. 9 exchanges the input shaft angle-output dc voltage behind input signal S1 and the S3
System.
Figure 11 is that output voltage is not more than+relation of input shaft angle-output dc voltage of 10V.
Figure 12 is the relation of the input shaft angle-output dc voltage of the leading ρ angle of Figure 11.
Figure 13 is the lag behind relation of input shaft angle-output dc voltage of ρ angle of Figure 11.
Figure 14 is the input shaft angle-output dc voltage after Figure 11 exchanges input signal S1 and S3
Relation.
Figure 15 is the relation of the input shaft angle-output dc voltage of the leading ρ angle of Figure 14.
Figure 16 is the lag behind relation of input shaft angle-output dc voltage of ρ angle of Figure 14.
Embodiment
Embodiment 1.With reference to Fig. 1.A kind of autosyn/rotary transformer-analog DC voltage transforming method is characterized in that, selsyn signal/signals of rotating transformer carries out the Signal Spacing conversion through miniature isolating transformer, produces one group of cosine and sine signal V
1And V
2, the digital angle φ that produces with up-down counter multiplies each other in the sine and cosine multiplier, obtains signal V
3, V
4Error signal KEoSin of output behind error amplifier (θ-φ), the closed loop that this error signal is formed through phase-sensitive demodulator, integrator, voltage controlled oscillator and up-down counter etc., seek the Sin (zero point of θ-φ), when this process is finished, VSin (θ-φ)＜1LSB, autosyn/rotary transformer shaft angle θ converts the digital angle φ output of parallel natural binary code form to; Export digital angle φ and digital angle φ is carried out digital processing and amplifying through the FPGA Programmable Logic Controller, make the digital angle of output step-length increase or reduce, reach the amplification of signal or dwindle, the digital angle σ of FPGA Programmable Logic Controller output is transported to the digital-analogue dc voltage changer of being made up of D/A converter, reference power supply and operational amplifier, become analog DC voltage signal Vo, finish shaft angle-DC voltage translation function, the digital-analogue dc voltage changer is provided with voltage gain and total null voltage adjustment.
Embodiment 2.With reference to Fig. 1, Fig. 2, in embodiment 1, in the FPGA Programmable Logic Controller, the digital angle φ signal of input is selected control through mode, linear increase or linearity reduce with input angle φ increase to make the digital angle φ ' of output, and after the design of arithmetic circuity realization pipelining, the digital angle φ ' of the output voltage of setting and input carries out multiplier computing and signal Processing, increase or reduce to export the step-length of digital angle signal, realize the amplification of digital signal or dwindle; Described multiplier is provided with reference clock and controls.
Embodiment 3.With reference to Fig. 1, Fig. 2, in embodiment 2, for the system that needs zero shift, the deviation angle tolerance ρ of input is by the FPGA Programmable Logic Controller, make deviation angle tolerance ρ and superpose through full adder by the digital angle after the signal Processing, realize finishing the skew of zero signal between the null position biasing scope-180 °-+180 °, described full adder is realized the pipelining design by arithmetic circuity; Enable control signal control output latch, make the angle output of skew numeral or the shutoff of full adder output; Described full adder is provided with reference clock and controls.
Embodiment 4.
For the selsyn input signal:
VS1-S3＝kEoSin?ω?tSinθ
V
S3-S2＝kEoSin?ω?tSin(θ+120)
V
S2-S1＝kEoSin?ω?tSin(θ+240)
For the rotary transformer input signal:
V
S1-S3＝kEoSin?ω?tSinθ
V
S2-S4＝kEoSin?ω?tCosθ
Output dc voltage | Vo|≤+ 10V, Vm≤+ 10V.Output voltage is proportional with the input shaft angle, when θ=179.99 °, and output voltage V o=Vm, when θ=180 °, output voltage V o=-Vm, its output waveform is as shown in Figure 3.
Embodiment 5.
For the selsyn input signal:
V
S1-S3＝kEoSin?ω?tSin(θ+ρ)
V
S3-S2＝kEoSin?ω?tSin(θ+ρ+120)
V
S2-S1＝kEoSin?ω?tSin(θ+ρ+240)
For the rotary transformer input signal:
V
S1-S3＝kEoSin?ω?tSin(θ+ρ)
V
S2-S4＝kEoSin?ω?tCos(θ+ρ)
Output dc voltage | Vo|≤+ 10V, Vm≤+ 10V, ρ is a leading angle, 0 °＜ρ＜180 °.Output voltage is proportional with the input shaft angle, when θ+ρ=179.99 °, and output voltage V o=Vm, when θ+ρ=180 °, output voltage V o=-Vm, its output waveform is as shown in Figure 4.
Embodiment 6.
For the selsyn input signal:
V
S1-S3＝kEoSin?ω?tSin(θ-ρ)
V
S3-S2＝kEoSin?ω?tSin(θ-ρ+120)
V
S2-S1＝kEoSin?ω?tSin(θ-ρ+240)
For the rotary transformer input signal:
V
S1-S3＝kEoSin?ω?tSin(θ-ρ)
V
S2-S4＝kEoSin?ω?tCos(θ-ρ)
Output dc voltage | Vo|≤+ 10V, Vm≤+ 10V, ρ is the hysteresis angle, 0 °＜ρ＜180 °.Output voltage is proportional with the input shaft angle, when θ-ρ=179.99 °, and output voltage V o=Vm, when θ-ρ=180 °, output voltage V o=-Vm, its output waveform is as shown in Figure 5.
Embodiment 7.
For the selsyn input signal, S1 and S3 exchange back:
V
S1-S3＝-kEoSin?ω?tSinθ
V
S3-S2＝-kEoSinωtSin(θ+120)
V
S2-S1＝-kEoSin?ω?tSin(θ+240)
For the rotary transformer input signal, S1 and S3 exchange back:
V
S1-S3＝-kEoSin?ω?tSinθ
V
S2-S4＝kEoSin?ω?tCosθ
Output dc voltage | Vo|≤+ 10V, Vm≤+ 10V.Output voltage is proportional with the input shaft angle, when θ=179.99 °, and output voltage V o=-Vm, when θ=180 °, output voltage V o=Vm, its output waveform is as shown in Figure 6.
Embodiment 8.
For the selsyn input signal, S1 and S3 exchange back:
V
S1-S3＝-kEoSin?ω?tSin(θ+ρ)
V
S3-S2＝-kEoSin?ω?tSin(θ+ρ+120)
V
S2-S1＝-kEoSin?ω?tSin(θ+ρ+240)
For the rotary transformer input signal, S1 and S3 exchange back:
V
S1-S3＝-kEoSin?ω?tSin(θ+ρ)
V
S2-S4＝kEoSin?ω?tCos(θ+ρ)
Output dc voltage | Vo|≤+ 10V, Vm≤+ 10V, ρ is a leading angle, 0 °＜ρ＜180 °.Output voltage is proportional with the input shaft angle, when θ+ρ=179.99 °, and output voltage V o=-Vm, when θ+ρ=180 °, output voltage V o=Vm, its output waveform is as shown in Figure 7.
Embodiment 9.
For the selsyn input signal, S1 and S3 exchange back:
V
S1-S3＝-kEoSin?ω?tSin(θ-ρ)
V
S3-S2＝-kEoSin?ω?tSin(θ-ρ+120)
V
S2-S1＝-kEoSin?ω?tSin(θ-ρ+240)
For the rotary transformer input signal, S1 and S3 exchange back:
V
S1-S3＝-kEoSin?ω?tSin(θ-ρ)
V
S2-S4＝kEoSin?ω?tCos(θ-ρ)
Output dc voltage | Vo|≤+ 10V, Vm≤+ 10V, ρ is the hysteresis angle, 0 °＜ρ＜180 °.Output voltage is proportional with the input shaft angle, when θ-ρ=179.99 °, and output voltage V o=-Vm, when θ-ρ=180 °, output voltage V o=Vm, its output waveform is as shown in Figure 8.
For the selsyn input signal:
V
S1-S3＝kEoSin?ω?tSinθ
V
S3-S2＝kEoSin?ω?tSin(θ+120)
V
S2-S1＝kEoSin?ω?tSin(θ+240)
For the rotary transformer input signal:
V
S1-S3＝kEoSin?ω?tSinθ
V
S2-S4=kEoSin ω tCos θ output dc voltage | Vo| 〉+10V,
Output voltage is proportional with the input shaft angle, when 180 °〉θ 〉=θ
mThe time, output voltage V o=+10V is as 180 °+θ
mDuring θ 〉=180 °, and output voltage V o=-10V, its output waveform is as shown in Figure 9.
Embodiment 11.
For the selsyn input signal, S1 and S3 exchange back:
V
S1-S3＝-kEoSin?ω?tSinθ
V
S3-S2＝-kEoSin?ω?tSin(θ+120)
V
S2-S1＝-kEoSin?ω?tSin(θ+240)
For the rotary transformer input signal:
V
S1-S3＝-kEoSin?ω?tSinθ
V
S2-S4＝kEoSin?ω?tCosθ
Output dc voltage | Vo| 〉+10V,
Output voltage is proportional with the input shaft angle, when 180 °〉θ 〉=θ
mThe time, output voltage V o=-10V is as 180 °+θ
mDuring θ 〉=180 °, and output voltage V o=+10V, its output waveform is as shown in figure 10.
Embodiment 12.
For the selsyn input signal:
V
S1-S3＝kEoSin?ω?tSinθ
V
S3-S2＝kEoSin?ω?tSin(θ+120)
V
S2-S1＝kEoSin?ω?tSin(θ+240)
For the rotary transformer input signal:
V
S1-S3＝kEoSin?ω?tSinθ
V
S2-S4＝kEoSin?ω?tCosθ
Output dc voltage 0V＜Vo≤+ 10V, Vm≤+ 10V.Output voltage is proportional with the input shaft angle, when θ=0 °, and output voltage V o=Vm, when θ=179.99 °, output voltage V o=0V, its output waveform is as shown in figure 11.
Embodiment 13.
For the selsyn input signal:
V
S1-S3＝kEoSin?ω?tSin(θ+ρ)
V
S3-S2＝kEoSin?ω?tSin(θ+ρ+120)
V
S2-S1＝kEoSin?ω?tSin(θ+ρ+240)
For the rotary transformer input signal:
V
S1-S3＝kEoSin?ω?tSin(θ+ρ)
V
S2-S4＝kEoSin?ω?tCos(θ+ρ)
Output dc voltage 0V＜Vo≤+ 10V, ρ is a leading angle, Vm≤+ 10V, 0 °＜ρ＜90 °.Output voltage is proportional with the input shaft angle, when θ+ρ=0 °, and output voltage V o=Vm, when θ+ρ=179.99 °, output voltage V o=0V, its output waveform is as shown in figure 12.
Embodiment 14.
For the selsyn input signal:
V
S1-S3＝kEoSin?ωtSin(θ-ρ)
V
S3-S2＝kEoSin?ω?tSin(θ-ρ+120)
V
S2-S1＝kEoSin?ω?tSin(θ-ρ+240)
For the rotary transformer input signal:
V
S1-S3＝kEoSin?ω?tSin(θ-ρ)
V
S2-S4＝kEoSin?ω?tCos(θ-ρ)
Output dc voltage 0V＜Vo≤+ 10V, ρ is the hysteresis angle, Vm≤+ 10V.Output voltage is proportional with the input shaft angle, and 0 °＜ρ＜180 °, when θ-ρ=0 °, output voltage V o=Vm, when θ-ρ=179.99 °, output voltage V o=0V, its output waveform is as shown in figure 13.
Embodiment 15.
For the selsyn input signal, S1 and S3 exchange back:
V
S1-S3＝-kEoSin?ω?tSinθ
V
S3-S2＝-kEoSin?ω?tSin(θ+120)
V
S2-S1＝-kEoSin?ω?tSin(θ+240)
For the rotary transformer input signal:
V
S1-S3＝-kEoSin?ω?tSinθ
V
S2-S4＝kEoSin?ω?tCosθ
Output dc voltage 0V＜Vo≤+ 10V, Vm≤+ 10V.Output voltage is proportional with the input shaft angle, when θ=0 °, and output voltage V o=OV, when θ=179.99 °, output voltage V o=Vm, its output waveform is as shown in figure 14.
Embodiment 16.
For the selsyn input signal, S1 and S3 exchange back:
V
S1-S3＝-kEoSin?ω?tSin(θ+ρ)
V
S3-S2＝-kEoSin?ω?tSin(θ+ρ+120)
V
S2-S1＝-kEoSin?ω?tSin(θ+ρ+240)
For the rotary transformer input signal:
V
S1-S3＝-kEoSin?ω?tSin(θ+ρ)
V
S2-S4＝kEoSin?ω?tCos(θ+ρ)
Output dc voltage 0V＜Vo≤+ 10V, ρ is a leading angle, Vm≤+ 10V.Output voltage is proportional with the input shaft angle, and 0 °＜ρ＜90 °, when θ+ρ=0 °, output voltage V o=0V, when θ+ρ=179.99 °, output voltage V o=Vm, its output waveform is as shown in figure 15.
Embodiment 17.
For the selsyn input signal, S1 and S3 exchange back:
V
S1-S3＝-kEoSin?ω?tSin(θ-ρ)
V
S3-S2＝-kEoSin?ω?tSin(θ-ρ+120)
V
S2-S1＝-kEoSin?ω?tSin(θ-ρ+240)
For the rotary transformer input signal, S1 and S3 exchange back:
V
S1-S3＝-kEoSin?ω?tSin(θ-ρ)
V
S2-S4＝kEoSin?ω?tCos(θ-ρ)
Claims (3)
1. an autosyn/rotary transformer-analog DC voltage transforming method is characterized in that, selsyn signal/signals of rotating transformer carries out the Signal Spacing conversion through miniature isolating transformer, produces one group of cosine and sine signal V
1And V
2, the digital angle φ that produces with up-down counter multiplies each other in the sine and cosine multiplier, obtains signal V
3, V
4Error signal kEoSin of output behind error amplifier (θ-φ), the closed loop that this error signal is formed through phase-sensitive demodulator, integrator, voltage controlled oscillator and up-down counter, seek the Sin (zero point of θ-φ), when this process is finished, VSin (θ-φ)＜1LSB, autosyn/rotary transformer shaft angle θ converts the up-down counter numeral angle φ output of parallel natural binary code form to; Export digital angle φ and digital angle φ is carried out digital processing and amplifying through the FPGA Programmable Logic Controller, make the digital angle of output step-length increase or reduce, reach the amplification of signal or dwindle, the digital angle σ of FPGA Programmable Logic Controller output is transported to the digital-analogue dc voltage changer of being made up of D/A converter, reference power supply and operational amplifier, become analog DC voltage signal Vo, finish shaft angle-DC voltage translation function, the digital-analogue dc voltage changer is provided with voltage gain and total null voltage adjustment; (among the θ-φ), k is a no-load voltage ratio, and Eo is the amplitude of reference voltage, and θ is the autosyn/rotary transformer shaft angle, and φ is the up-down counter numeral angle of parallel natural binary code form at kEoSin.
2. a kind of autosyn/rotary transformer-analog DC voltage transforming method according to claim 1, it is characterized in that, in the FPGA Programmable Logic Controller, the digital angle φ signal of input is selected control through mode, the digital angle φ ' of output is increased and linear increasing or linear the minimizing with input angle φ, after the design of arithmetic circuity realization pipelining, the output voltage of setting and the digital angle φ ' of input carry out multiplier computing and signal Processing, increase or reduce to export the step-length of digital angle signal, realize the amplification of digital signal or dwindle; Described multiplier is provided with reference clock and controls.
3. a kind of autosyn/rotary transformer-analog DC voltage transforming method according to claim 2, it is characterized in that, for the system that needs zero shift, the deviation angle tolerance ρ of input is by the FPGA Programmable Logic Controller, make deviation angle tolerance ρ and superpose through full adder by the digital angle after the signal Processing, realize finishing the skew of zero signal between the null position biasing scope-180 °-+180 °, described full adder is realized the pipelining design by arithmetic circuity; Enable control signal control output latch, make the angle output of skew numeral or the shutoff of full adder output; Described full adder is provided with reference clock and controls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100379831A CN100462686C (en) | 2006-01-19 | 2006-01-19 | Synchro/rotary transformer-analog DC voltage transforming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100379831A CN100462686C (en) | 2006-01-19 | 2006-01-19 | Synchro/rotary transformer-analog DC voltage transforming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1841026A CN1841026A (en) | 2006-10-04 |
| CN100462686C true CN100462686C (en) | 2009-02-18 |
Family
ID=37030139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100379831A Active CN100462686C (en) | 2006-01-19 | 2006-01-19 | Synchro/rotary transformer-analog DC voltage transforming method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100462686C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012093215A (en) * | 2010-10-27 | 2012-05-17 | Omron Automotive Electronics Co Ltd | Rotation angle detecting device |
| CN102818581B (en) * | 2012-07-12 | 2015-01-07 | 武汉迈信电气技术有限公司 | Incremental encoder based on rotary transformer |
| CN104111665B (en) * | 2014-07-29 | 2017-02-01 | 深圳市步科电气有限公司 | Angle tracking device of rotating transformer |
| CN106647505A (en) * | 2016-12-27 | 2017-05-10 | 北京润科通用技术有限公司 | Signal processing system and method for RVDT |
| CN107356268B (en) * | 2017-07-11 | 2020-07-14 | 连云港杰瑞电子有限公司 | Differential conversion method from rotary transformer to digit |
| CN108107232B (en) * | 2017-11-06 | 2020-08-11 | 武汉航空仪表有限责任公司 | Method for digitizing angle signal |
| CN114039459B (en) * | 2021-10-25 | 2023-05-30 | 智新控制系统有限公司 | Rotation simulation detection method and rotation simulator |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU741303A1 (en) * | 1977-12-29 | 1980-06-15 | Предприятие П/Я М-5904 | Shaft angular position-to-dc voltage converter |
| SU836644A1 (en) * | 1979-07-05 | 1981-06-07 | Азербайджанский Институт Нефти Ихимии Им. M.Азизбекова | Shaft angular position-to-dc voltage converter |
| SU951358A1 (en) * | 1980-12-04 | 1982-08-15 | Предприятие П/Я М-5904 | Shaft rotation angle to voltage convertion method |
| SU993010A1 (en) * | 1980-10-01 | 1983-01-30 | Одесское специальное конструкторское бюро полиграфического машиностроения | Shaft turn angle to voltage converter |
| JPS60187811A (en) * | 1984-03-07 | 1985-09-25 | Mitsubishi Electric Corp | Synchro-digital converter |
| CN86100788A (en) * | 1986-01-30 | 1987-04-15 | 大连电子研究所 | Corner-the data converter of multichannel synchrodyne |
| CN2591560Y (en) * | 2002-12-10 | 2003-12-10 | 沈阳黎明航空发动机(集团)有限责任公司 | Regulator of engine corner sensor |
-
2006
- 2006-01-19 CN CNB2006100379831A patent/CN100462686C/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU741303A1 (en) * | 1977-12-29 | 1980-06-15 | Предприятие П/Я М-5904 | Shaft angular position-to-dc voltage converter |
| SU836644A1 (en) * | 1979-07-05 | 1981-06-07 | Азербайджанский Институт Нефти Ихимии Им. M.Азизбекова | Shaft angular position-to-dc voltage converter |
| SU993010A1 (en) * | 1980-10-01 | 1983-01-30 | Одесское специальное конструкторское бюро полиграфического машиностроения | Shaft turn angle to voltage converter |
| SU951358A1 (en) * | 1980-12-04 | 1982-08-15 | Предприятие П/Я М-5904 | Shaft rotation angle to voltage convertion method |
| JPS60187811A (en) * | 1984-03-07 | 1985-09-25 | Mitsubishi Electric Corp | Synchro-digital converter |
| CN86100788A (en) * | 1986-01-30 | 1987-04-15 | 大连电子研究所 | Corner-the data converter of multichannel synchrodyne |
| CN2591560Y (en) * | 2002-12-10 | 2003-12-10 | 沈阳黎明航空发动机(集团)有限责任公司 | Regulator of engine corner sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1841026A (en) | 2006-10-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100462686C (en) | Synchro/rotary transformer-analog DC voltage transforming method | |
| CN101281041B (en) | Single power supply CMOS integrated circuit autosyn / rotary transformer - digital conversion technique | |
| CN101281042B (en) | High precision CMOS integrated circuit autosyn / rotary transformer - digital conversion technique | |
| CN101709983B (en) | On-line actual error compensation system of sine and cosine encoder | |
| CN101521480A (en) | Resolution method and resolver for signals of rotating transformer | |
| CN105222814A (en) | Multi-turn memory rotary transformer decoding circuit and position calculation method thereof | |
| CN102589584B (en) | Method for converting high-precision single-chip digital signal into shaft angle signal | |
| CN201795812U (en) | Compensation system for online actual errors of sin-cos encoder | |
| CN205175428U (en) | Position is detected and decoding circuit with dual -speed resolver | |
| CN105978570A (en) | High-precision signal processing system of sine and cosine encoder | |
| Szymczak et al. | Precision resolver-to-digital converter measures angular position and velocity | |
| CN105065452A (en) | Integrated magnetic-bearing digital control system for magnetic-suspension inertially-stabilized platform | |
| CN106767956A (en) | High speed and super precision machine tool chief axis magnetic induction absolute value encoder and its measurement gear | |
| CN102095431A (en) | Digital converter of magnetic encoder | |
| Ye et al. | Precise phase demodulation algorithm for sinusoidal encoders and resolvers | |
| Feng et al. | Development of a combined magnetic encoder | |
| CN205246106U (en) | High accuracy sine -cosine resolver's simulation implementation structure | |
| CN102879017B (en) | Novel double-speed coarse and fine combination system for resolver-to-digital converter | |
| CN101876558A (en) | Position detecting device and signal processing device and method thereof | |
| CN109990823A (en) | For detecting the detection device and detection method of photoelectric encoder precision | |
| CN101886932A (en) | Position detection device, signal processing device thereof and method | |
| CN113280839A (en) | Magnetic field coupling type magnetic encoder and encoding method thereof | |
| CN100425950C (en) | Self-angle-regulator/rotary transformer analog DC converting method | |
| CN106357172A (en) | Sine-cosine signal processing circuit for speed and positon feedback | |
| CN209166490U (en) | A kind of multi-channel synchronous rotation change simulated measurement device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171116 Address after: 222000 Jiangsu Province, Lianyungang city Haizhou District Lake Road No. 18 Co-patentee after: 716th Research Institute of China Shipbuilding Industry Corporation Patentee after: Lianyungang Jierui Electronic Co., Ltd. Address before: Sinpo District of Jiangsu city of Lianyungang province Lian Hai road 222006 No. 42 Patentee before: Lianyungang Jierui Electronic Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180516 Address after: No. 18, St. Lake Road, Haizhou District, Lianyungang, Jiangsu Patentee after: Lianyungang Jierui Electronic Co., Ltd. Address before: No. 18, St. Lake Road, Haizhou District, Lianyungang, Jiangsu Co-patentee before: 716th Research Institute of China Shipbuilding Industry Corporation Patentee before: Lianyungang Jierui Electronic Co., Ltd. |
|
| TR01 | Transfer of patent right |