CN202402755U - Multichannel direction selection valve positioning device - Google Patents
Multichannel direction selection valve positioning device Download PDFInfo
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- CN202402755U CN202402755U CN2011205776434U CN201120577643U CN202402755U CN 202402755 U CN202402755 U CN 202402755U CN 2011205776434 U CN2011205776434 U CN 2011205776434U CN 201120577643 U CN201120577643 U CN 201120577643U CN 202402755 U CN202402755 U CN 202402755U
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Abstract
The utility model relates to a multichannel direction selection valve positioning device which comprises a multichannel direction selection valve, a quadrature encoder, an analysis control circuit and a motor, wherein the quadrature encoder is connected with the multichannel direction selection valve and the analysis control circuit and is used for counting an encoded pulse number and feeding back a counting result to the analysis control circuit; the analysis control circuit is used for obtaining a debugging parameter and a stepping encoded pulse number corresponding to each movement of the multichannel direction selection valve or also obtaining an operation direction of the multichannel direction selection valve, according to a current position of the multichannel direction selection valve and a feedback result of the quadrature encoder; the debugging parameter comprises an initial pulse number; the initial pulse number is an encoded pulse number between a pulse I on an encoding disk and a selected reference valve position on the multichannel direction selection valve; a definite encoded pulse number exists between the reference valve position and each valve position on the multichannel direction selection valve; and the motor is used for rotating the multichannel direction selection valve under the control of a control unit. According to the utility model, the interference of noise and mechanical shaking to the positioning is eliminated and the multichannel direction selection valve positioning device has the advantages of high positioning accuracy and the like.
Description
Technical field
The utility model relates to a kind of positioning device, and especially a kind of multichannel choosing is to the valve positioning device.
Background technique
The multichannel choosing is the Primary Component of SIA analysis platform to valve, is mainly used in the switching of different reagent passage.Realize the accurate switching of different reagent passage, just need guarantee motor module, driving mechanism and choosing accurate location to valve head.
Photoelectric coded disk close-loop control mode at present commonly used is located adjustment, and this scheme detects the step number that motor moves through photoelectric coded disk, comes the step number of advancing of feedback control motor through the umber of pulse of coding mask, thereby reaches the purpose of control location.
This scheme has following shortcoming: because only the number through the coding mask pulse feeds back, do not judge the direction of pulse, so can't solve the error that the motor shake produces; Owing to do not carry out pulse detection after operation stops to motor, can't solve because the error that inertia causes.Though can guarantee Location accuracy in a short time, the accumulation machine error that produces in the time of can't overcoming for a long time operation is continuously disturbed; Circuit noise disturbs and can produce the bursts of error problem, and it is accurate to cause long-term operation to be lost.
The model utility content
In order to solve above-mentioned deficiency of the prior art, the utility model provides a kind of and has had error that operation feedback and location mechanism, the noise interference that can solve circuit and mechanical shaking cause, realized that pinpoint multichannel selects to the valve positioning device.
For realizing above-mentioned purpose, the utility model adopts following technological scheme:
The utility model provides a kind of multichannel choosing to the valve positioning device, comprises
The multichannel choosing is to valve;
Orthogonal encoder, said orthogonal encoder links to each other with analysis controling circuit to valve with the multichannel choosing, the coded pulse number is counted, and count results is fed back to analysis controling circuit;
Analysis controling circuit; Said analysis controling circuit selects to the current location of valve and the feedback result of orthogonal encoder based on multichannel; Draw tuning parameter and each stepping coded pulse number that moves the multichannel choosing to the valve correspondence, or also comprise the traffic direction of multichannel choosing to valve;
Said tuning parameter comprises the inceptive impulse number; Said inceptive impulse number is the coded pulse number of multichannel choosing between the reference valve position on the valve that is arranged on the I pulse on the coding mask and selectes, and said have definite coded pulse number with reference to valve position and multichannel choosing between each valve position on the valve;
Motor, said motor are used under the control of control unit, rotating the multichannel choosing to valve.
Further, said analysis controling circuit continues to carry out this stepping coded pulse number with the coded pulse deduction back control motor that error signal produces.
Further, said analysis controling circuit does not rotate and instrument when producing shake to valve in multichannel choosing, instrument is shaken the corresponding codes umber of pulse count this stepping coded pulse number.
Further; Said analysis controling circuit calculates multichannel choosing is moved to this target valve position from traffic direction from target valve position last time to valve and multichannel the choosing corresponding coded pulse of stepping in the same way number and reverse stepping coded pulse number when the last time traffic direction of valve is identical and opposite respectively; And synchronous stepping coded pulse number and reverse stepping coded pulse number compared; Will be wherein the smaller as this stepping coded pulse number, and the choosing of definite multichannel is to this traffic direction of valve.
Further, said tuning parameter also comprises machine error, and said machine error is motor and the drive gap of multichannel choosing between the valve valve head;
Said analysis controling circuit moves to this target valve position from target valve position last time to valve in multichannel choosing traffic direction and multichannel select to valve last time traffic direction is opposite the time, machine error corresponding codes umber of pulse is counted this stepping coded pulse number.
The utility model compared with prior art has following beneficial effect:
1, based on the orthogonal coding method, the two-way code signal is detected simultaneously, be convenient to shield error signal, suppress the partial circuit noise interference.
2, move when static, still shake is disturbed and detected, operation compensates the interference of having avoided static shake, noise to cause in next time.
3, machine error, jitter error have been considered in the calculating of operation, and have optimized path of travel, and the shortest time can accurately move to the target valve position.
Description of drawings
Fig. 1 is the orthogonal encoder structural representation;
Fig. 2 is orthogonal encoder A and B level corresponding relation figure mutually;
Fig. 3 is orthogonal encoder A A and the corresponding timing diagram of B when leading mutually;
Fig. 4 is orthogonal encoder B A and the corresponding timing diagram of B when leading mutually;
Fig. 5 is that the position of multichannel choosing between the I pulse on the coding mask of each valve position of valve and orthogonal encoder concerns schematic representation among the embodiment 16.
Embodiment
Provide a kind of multichannel choosing to the valve positioning device, having comprised:
1, the multichannel choosing is to valve;
2, orthogonal encoder, said orthogonal encoder links to each other with analysis controling circuit to valve with the multichannel choosing, the coded pulse number is counted, and count results is fed back to analysis controling circuit;
See also Fig. 1, orthogonal encoder output two paths of signals A mutually with B mutually, A phase and B these two interchannel relations mutually are only.If A leading mutually B phase, the sense of rotation of motor is considered to forward so; If A falls behind the B phase mutually, the sense of rotation of motor then is considered to reverse so.
See also Fig. 2, A is a rising edge, and when B was low level, counting forward added one; A is a rising edge, and when B was high level, counting in reverse added one; A is a trailing edge, and when B was high level, counting forward added one; A is a trailing edge, and when B was low level, counting in reverse added one.
Equally, judge A phase level when B is rising edge, also obtain 4 prescriptions to criterion.
See also Fig. 3, Fig. 4, the sequential relationship between orthogonal encoder A phase and the B phase is definite relatively, is 10-＞11-＞01-＞00-＞10-＞11-＞01-＞00-＞10 ...Then, can suppress the partial circuit interference of noise based on this mechanism; 11 the front and back pulse of for example encoding is respectively 10 and 01, if produce 1100 pulse, can be judged as error signal, possibly cause for the noise of circuit, it is shielded, from the stepping coded pulse with its deduction.
3, analysis controling circuit; Said analysis controling circuit selects to the current location of valve and the feedback result of orthogonal encoder based on multichannel; Draw tuning parameter and each stepping coded pulse number that rotates the multichannel choosing to the valve correspondence, or also comprise the traffic direction of multichannel choosing to valve;
3.1, said tuning parameter comprises the inceptive impulse number; Said inceptive impulse number is the coded pulse number of multichannel choosing between the reference valve position on the valve that is arranged on the I pulse on the orthogonal encoder coding mask and selectes, and said have definite coded pulse number with reference to valve position and multichannel choosing between each valve position on the valve; This numerical value is relevant with the rigging position of orthogonal encoder coding mask.
Saidly can be one of them the known valve position on the orthogonal encoder coding mask, also can be an illusory position, between each the known valve position on the valve, have definite coded pulse number as long as select with multichannel with reference to valve position with reference to valve position.
3.2, further, said analysis controling circuit continues to carry out this stepping coded pulse number with the coded pulse deduction back control motor that error signal produces.
3.3, further, said analysis controling circuit does not rotate and instrument when producing shake to valve in the multichannel choosing, instrument is shaken the corresponding codes umber of pulse count this stepping coded pulse number.
This mode has been avoided in the multichannel choosing stepping error that the instrument shake causes when valve does not rotate.
Instrument shake may make the multichannel choosing be moved with respect to target location last time to valve, and wherein, instrument shake corresponding codes umber of pulse maybe be for just; Also maybe be for negative; If movement direction is identical with the direction that moves to this target valve position, then the corresponding codes umber of pulse is for bearing, otherwise for just.
3.4, further, said tuning parameter also comprises machine error, said machine error is that motor selects the drive gap between the valve valve head with multichannel;
Said analysis controling circuit moves to this target valve position from target valve position last time to valve in multichannel choosing traffic direction and multichannel select to valve last time traffic direction is opposite the time, machine error corresponding codes umber of pulse is counted this stepping coded pulse number.
3.5, further; Said analysis controling circuit calculates multichannel choosing is moved to this target valve position from traffic direction from target valve position last time to valve and multichannel the choosing corresponding coded pulse of stepping in the same way number and reverse stepping coded pulse number when the last time traffic direction of valve is identical and opposite respectively; And synchronous stepping coded pulse number and reverse stepping coded pulse number compared; Will be wherein the smaller as this stepping coded pulse number, and the choosing of definite multichannel is to this traffic direction of valve.
Through of the comparison of synchronous stepping coded pulse number with reverse stepping coded pulse number, optimized the path that moves to the target valve position, can guarantee in the shortest time, accurately to move to the target valve position.
4, motor, said motor are used under the control of control unit, rotating the multichannel choosing to valve.
Also provide a kind of multichannel choosing to the valve localization method, may further comprise the steps:
A, the choosing of assembling multichannel are confirmed tuning parameter to valve, and said tuning parameter comprises the inceptive impulse number;
Said inceptive impulse number is the coded pulse number of multichannel choosing between the reference valve position on the valve that is arranged on the I pulse on the orthogonal encoder coding mask and selectes, and said have definite coded pulse number with reference to valve position and multichannel choosing between each valve position on the valve;
Saidly can be one of them the known valve position on the orthogonal encoder coding mask, also can be an illusory position, between each the known valve position on the valve, have definite coded pulse number as long as select with multichannel with reference to valve position with reference to valve position.
B, multichannel select after valve powers on, and based on the inceptive impulse number, the multichannel choosing are moved to reference to the valve position place to valve;
C, calculate the multichannel choosing is moved to the required stepping coded pulse number of this target valve position to valve from target valve position last time, as this stepping coded pulse number;
Multichannel choosing moves to after valve powers on reference to after the valve position, when moving to the target valve position for the first time, and then can be with reference to the last time target valve position of valve position as this operation;
This stepping coded pulse number of confirming among D, the execution in step C moves to this target valve position with the multichannel choosing to valve.
Further, in step D, when this stepping coded pulse of confirming among the execution in step C is counted, the coded pulse deduction continued that error signal produces is carried out this stepping coded pulse number.
Further, in step C, also comprise static coding compensation: the multichannel choosing if instrument produces shake, is not then shaken the corresponding codes umber of pulse with instrument and is counted this stepping coded pulse number when valve rotates.
Further; In step C; Calculate multichannel choosing is moved to this target valve position from traffic direction from target valve position last time to valve and multichannel the choosing corresponding coded pulse of stepping in the same way number and reverse stepping coded pulse number when the last time traffic direction of valve is identical and opposite respectively; And will be in the same way stepping coded pulse number compare with reverse stepping coded pulse number, wherein the smaller is as this stepping coded pulse number, and the choosing of definite multichannel is to this traffic direction of valve.
Further, in steps A, said tuning parameter also comprises machine error, and said machine error is motor and the drive gap of multichannel choosing between the valve valve head;
In step B, also write down the traffic direction of multichannel choosing to valve;
In step C, the traffic direction that moves to this target valve position from target valve position last time to valve when multichannel choosing and multichannel select to valve last time traffic direction is opposite the time, machine error corresponding codes umber of pulse is counted this stepping coded pulse number.
Embodiment 1
A kind of multichannel choosing is to the valve positioning device, and comprising: multichannel selects to valve, orthogonal encoder, analysis controling circuit and motor;
Said orthogonal encoder links to each other with analysis controling circuit to valve with the multichannel choosing, the coded pulse number is counted, and count results is fed back to analysis controling circuit;
Said analysis controling circuit, draws tuning parameter and each mobile multichannel choosing to the corresponding stepping coded pulse number of valve, or also comprises the traffic direction of multichannel choosing to valve to the current location of valve and the feedback result of orthogonal encoder based on the multichannel choosing;
Said tuning parameter comprises the inceptive impulse number; Said inceptive impulse number is the coded pulse number of multichannel choosing between the reference valve position on the valve that is arranged on the I pulse on the orthogonal encoder coding mask and selectes, and said have definite coded pulse number with reference to valve position and multichannel choosing between each valve position on the valve; This numerical value is relevant with the rigging position of orthogonal encoder coding mask.
Said motor is used under the control of control unit the choosing of mobile multichannel to valve.
Present embodiment also provides a kind of multichannel choosing to the valve localization method, may further comprise the steps:
A, the choosing of assembling multichannel are confirmed tuning parameter to valve, and said tuning parameter comprises the inceptive impulse number;
Said inceptive impulse number is the coded pulse number of multichannel choosing between the reference valve position on the valve that is arranged on the I pulse on the orthogonal encoder coding mask and selectes, and said have definite coded pulse number with reference to valve position and multichannel choosing between each valve position on the valve;
Said is No. 5 valve position of multichannel choosing on valve with reference to valve position;
B, based on the inceptive impulse number, multichannel choosing is moved to reference to the valve position place to valve;
C, calculate the multichannel choosing is moved to the required stepping coded pulse number of this target valve position to valve from target valve position last time, as this stepping coded pulse number;
Multichannel choosing moves to after valve powers on reference to after the valve position, when moving to the target valve position for the first time, and then can be with reference to the last time target valve position of valve position as this operation;
This stepping coded pulse number of confirming among D, the execution in step C moves to this target valve position with the multichannel choosing to valve.
Embodiment 2
A kind of multichannel choosing is to the valve positioning device, and different with the positioning device described in the embodiment 1 is:
1, the reference valve position of present embodiment for multichannel choosing No. 1 valve position on valve 150 positions that coded pulse is corresponding that are separated by clockwise;
2, error signal compensation: analysis controling circuit continues to carry out this stepping coded pulse number with the coded pulse deduction back control motor that error signal produces.
Present embodiment also provides a kind of multichannel choosing to the valve localization method, and different with the localization method described in the embodiment 1 is:
In step C, when error signal produces, carry out the error signal compensation, promptly analysis controling circuit continues to carry out this stepping coded pulse number with the coded pulse deduction back control motor that error signal produces.
Embodiment 3
A kind of multichannel choosing is to the valve positioning device, and different with the positioning device described in the embodiment 1 is:
The instrument jitter compensation: analysis controling circuit does not rotate and instrument when producing shake to valve in multichannel choosing, instrument is shaken the corresponding codes umber of pulse count this stepping coded pulse number.
Present embodiment also provides a kind of multichannel choosing to the valve localization method, and different with the localization method described in the embodiment 1 is:
In step C, analysis controling circuit does not rotate and instrument when producing shake to valve in multichannel choosing, carries out the instrument jitter compensation, instrument is shaken the corresponding codes umber of pulse count this stepping coded pulse number.
Embodiment 4
A kind of multichannel choosing is to the valve positioning device, and different with the positioning device described in the embodiment 2 is:
The instrument jitter compensation: analysis controling circuit does not rotate and instrument when producing shake to valve in multichannel choosing, instrument is shaken the corresponding codes umber of pulse count this stepping coded pulse number.
Present embodiment also provides a kind of multichannel choosing to the valve localization method, and different with the localization method described in the embodiment 2 is:
In step C, analysis controling circuit does not rotate and instrument when producing shake to valve in multichannel choosing, carries out the instrument jitter compensation, instrument is shaken the corresponding codes umber of pulse count this stepping coded pulse number.
Embodiment 5
A kind of multichannel choosing is to the valve positioning device, and different with the positioning device described in the embodiment 1 is:
Tuning parameter also comprises machine error, and said machine error is motor and the drive gap of multichannel choosing between the valve valve head;
Analysis controling circuit moves to this target valve position from target valve position last time to valve in multichannel choosing traffic direction and multichannel select to valve last time traffic direction is opposite the time, machine error corresponding codes umber of pulse is counted this stepping coded pulse number.
Present embodiment also provides a kind of multichannel choosing to the valve localization method, and different with the localization method described in the embodiment 1 is:
In step C; Calculating moves to this target valve position required stepping coded pulse number to valve from target valve position last time with multichannel choosing; Analysis controling circuit moves to this target valve position from target valve position last time to valve in multichannel choosing traffic direction and multichannel select to valve last time traffic direction is opposite the time, machine error corresponding codes umber of pulse is counted this stepping coded pulse number.
Embodiment 6
A kind of multichannel choosing is to the valve positioning device, and different with the positioning device described in the embodiment 5 is:
The error signal compensation: analysis controling circuit continues to carry out this stepping coded pulse number with the coded pulse deduction back control motor that error signal produces.
Present embodiment also provides a kind of multichannel choosing to the valve localization method, and different with the localization method described in the embodiment 5 is:
In step C, when error signal produces, carry out the error signal compensation, promptly analysis controling circuit continues to carry out this stepping coded pulse number with the coded pulse deduction back control motor that error signal produces.
Embodiment 7
A kind of multichannel choosing is to the valve positioning device, and different with the positioning device described in the embodiment 5 is:
The instrument jitter compensation: analysis controling circuit does not rotate and instrument when producing shake to valve in multichannel choosing, instrument is shaken the corresponding codes umber of pulse count this stepping coded pulse number.
Present embodiment also provides a kind of multichannel choosing to the valve localization method, and different with the localization method described in the embodiment 5 is:
In step C, analysis controling circuit does not rotate and instrument when producing shake to valve in multichannel choosing, carries out the instrument jitter compensation, instrument is shaken the corresponding codes umber of pulse count this stepping coded pulse number.
Embodiment 8
A kind of multichannel choosing is to the valve positioning device, and different with the positioning device described in the embodiment 6 is:
The instrument jitter compensation: analysis controling circuit does not rotate and instrument when producing shake to valve in multichannel choosing, instrument is shaken the corresponding codes umber of pulse count this stepping coded pulse number.
Present embodiment also provides a kind of multichannel choosing to the valve localization method, and different with the localization method described in the embodiment 2 is:
In step C, analysis controling circuit does not rotate and instrument when producing shake to valve in multichannel choosing, carries out the instrument jitter compensation, instrument is shaken the corresponding codes umber of pulse count this stepping coded pulse number.
Embodiment 9
A kind of multichannel choosing is to the valve positioning device, and different with the positioning device described in the embodiment 1 is:
Analysis controling circuit calculates multichannel choosing is moved to this target valve position from traffic direction from target valve position last time to valve and multichannel the choosing corresponding coded pulse of stepping in the same way number and reverse stepping coded pulse number when the last time traffic direction of valve is identical and opposite respectively; And synchronous stepping coded pulse number and reverse stepping coded pulse number compared; Will be wherein the smaller as this stepping coded pulse number, and the choosing of definite multichannel is to this traffic direction of valve.
Present embodiment also provides a kind of multichannel choosing to the valve localization method, and different with the localization method described in the embodiment 1 is:
In step C; Analysis controling circuit calculates multichannel choosing is moved to this target valve position from traffic direction from target valve position last time to valve and multichannel the choosing corresponding coded pulse of stepping in the same way number and reverse stepping coded pulse number when the last time traffic direction of valve is identical and opposite respectively; And synchronous stepping coded pulse number and reverse stepping coded pulse number compared; Will be wherein the smaller as this stepping coded pulse number, and the choosing of definite multichannel is to this traffic direction of valve.
Embodiment 10
A kind of multichannel choosing is to the valve positioning device, and different with the positioning device described in the embodiment 9 is:
The error signal compensation, analysis controling circuit continues to carry out this stepping coded pulse number with the coded pulse deduction back control motor that error signal produces.
Present embodiment also provides a kind of multichannel choosing to the valve localization method, and different with the localization method described in the embodiment 9 is:
In step C, when error signal produces, carry out the error signal compensation, promptly analysis controling circuit continues to carry out this stepping coded pulse number with the coded pulse deduction back control motor that error signal produces.
Embodiment 11
A kind of multichannel choosing is to the valve positioning device, and different with the positioning device described in the embodiment 9 is:
The instrument jitter compensation: analysis controling circuit does not rotate and instrument when producing shake to valve in multichannel choosing, instrument is shaken the corresponding codes umber of pulse count this stepping coded pulse number.
Present embodiment also provides a kind of multichannel choosing to the valve localization method, and different with the localization method described in the embodiment 9 is:
In step C, analysis controling circuit does not rotate and instrument when producing shake to valve in multichannel choosing, carries out the instrument jitter compensation, instrument is shaken the corresponding codes umber of pulse count this stepping coded pulse number.
Embodiment 12
A kind of multichannel choosing is to the valve positioning device, and different with the positioning device described in the embodiment 10 is:
The instrument jitter compensation: analysis controling circuit does not rotate and instrument when producing shake to valve in multichannel choosing, instrument is shaken the corresponding codes umber of pulse count this stepping coded pulse number.
Present embodiment also provides a kind of multichannel choosing to the valve localization method, and different with the localization method described in the embodiment 10 is:
In step C, analysis controling circuit does not rotate and instrument when producing shake to valve in multichannel choosing, carries out the instrument jitter compensation, instrument is shaken the corresponding codes umber of pulse count this stepping coded pulse number.
Embodiment 13
A kind of multichannel choosing is to the valve positioning device, and different with the positioning device described in the embodiment 9 is:
Tuning parameter also comprises machine error, and said machine error is motor and the drive gap of multichannel choosing between the valve valve head;
Analysis controling circuit moves to this target valve position from target valve position last time to valve in multichannel choosing traffic direction and multichannel select to valve last time traffic direction is opposite the time, machine error corresponding codes umber of pulse is counted this stepping coded pulse number.
Present embodiment also provides a kind of multichannel choosing to the valve localization method, and different with the localization method described in the embodiment 9 is:
In step C; Calculating moves to this target valve position required stepping coded pulse number to valve from target valve position last time with multichannel choosing; Analysis controling circuit moves to this target valve position from target valve position last time to valve in multichannel choosing traffic direction and multichannel select to valve last time traffic direction is opposite the time, machine error corresponding codes umber of pulse is counted this stepping coded pulse number.
Embodiment 14
A kind of multichannel choosing is to the valve positioning device, and different with the positioning device described in the embodiment 13 is:
The error signal compensation: analysis controling circuit continues to carry out this stepping coded pulse number with the coded pulse deduction back control motor that error signal produces.
Present embodiment also provides a kind of multichannel choosing to the valve localization method, and different with the localization method described in the embodiment 13 is:
In step C, when error signal produces, carry out the error signal compensation, promptly analysis controling circuit continues to carry out this stepping coded pulse number with the coded pulse deduction back control motor that error signal produces.
Embodiment 15
A kind of multichannel choosing is to the valve positioning device, and different with the positioning device described in the embodiment 13 is:
The instrument jitter compensation: analysis controling circuit does not rotate and instrument when producing shake to valve in multichannel choosing, instrument is shaken the corresponding codes umber of pulse count this stepping coded pulse number.
Present embodiment also provides a kind of multichannel choosing to the valve localization method, and different with the localization method described in the embodiment 13 is:
In step C, analysis controling circuit does not rotate and instrument when producing shake to valve in multichannel choosing, carries out the instrument jitter compensation, instrument is shaken the corresponding codes umber of pulse count this stepping coded pulse number.
Embodiment 16
A kind of multichannel choosing is to the valve positioning device, and different with the positioning device described in the embodiment 14 is:
The instrument jitter compensation: analysis controling circuit does not rotate and instrument when producing shake to valve in multichannel choosing, instrument is shaken the corresponding codes umber of pulse count this stepping coded pulse number.
Present embodiment also provides a kind of multichannel choosing to the valve localization method, and different with the localization method described in the embodiment 14 is:
In step C, analysis controling circuit does not rotate and instrument when producing shake to valve in multichannel choosing, carries out the instrument jitter compensation, instrument is shaken the corresponding codes umber of pulse count this stepping coded pulse number.
Utilize the device of present embodiment to carry out the application examples of multichannel choosing to the valve location:
A, see also Fig. 5, the choosing of assembling multichannel is to valve, and the multichannel choosing is to valve totally 8 valve position, and No.1～No.8 with No. 1 valve position No.1 valve position as a reference, confirms tuning parameter, and said tuning parameter comprises inceptive impulse number and 15 pulses of machine error;
B, multichannel select after valve powers on, and based on the inceptive impulse number, the multichannel choosing are moved to reference to the valve position place to valve;
C, calculate the multichannel choosing is moved to the required stepping coded pulse number of this target valve position to valve from target valve position last time, as this stepping coded pulse number:
Multichannel choosing moves to after valve powers on reference to after the valve position, when moving to the target valve position for the first time, and then can be with reference to the last time target valve position of valve position as this operation;
If last time the target valve position was No. 3 valve position No.3, the multichannel choosing is a forward to the valve traffic direction, and this target valve position is No. 5 valve position No.5, and the positive pulse before this operation is 2, and reverse impulse is 1; At this moment, if the forward operation, then theoretical umber of pulse is 2*250=500 pulse, and then forward stepping coded pulse number is 500, then needs 499 steps of forward operation; If inverted running, then theoretical umber of pulse is 6*250=1500, and inverted running also need compensate machine error, and then the theoretical umber of pulse of inverted running is 1501+16=1517, and then reverse stepping coded pulse number flavor 1516 then needs 1517 steps of inverted running.Then forward stepping coded pulse number is compared lessly with reverse stepping coded pulse number, and then this stepping coded pulse number of confirming of control analysis unit is 499, and traffic direction is a forward;
When confirming that in the control analysis unit this stepping coded pulse is counted, pay close attention in real time whether instrument is shaken and wrong Flutter whether, and carry out corresponding instrument shake and error signal compensation;
This stepping coded pulse number of confirming among D, the execution in step C moves to this target valve position with the multichannel choosing to valve.
Above-mentioned mode of execution should not be construed as the restriction to the utility model protection domain.The key of the utility model is: the mode of carrying out the coded pulse counting through orthogonal coding technology feedback mechanism is controlled the operation of multichannel choosing to valve.Under the situation that does not break away from the utility model spirit, any type of change that the utility model is made all should fall within the protection domain of the utility model.
Claims (5)
1. a multichannel choosing comprises to the valve positioning device
The multichannel choosing is to valve;
Orthogonal encoder, said orthogonal encoder links to each other with analysis controling circuit to valve with the multichannel choosing, the coded pulse number is counted, and count results is fed back to analysis controling circuit;
Analysis controling circuit; Said analysis controling circuit selects to the current location of valve and the feedback result of orthogonal encoder based on multichannel; Draw tuning parameter and each stepping coded pulse number that moves the multichannel choosing to the valve correspondence, or also comprise the traffic direction of multichannel choosing to valve;
Said tuning parameter comprises the inceptive impulse number; Said inceptive impulse number is the coded pulse number of multichannel choosing between the reference valve position on the valve that is arranged on the I pulse on the coding mask and selectes, and said have definite coded pulse number with reference to valve position and multichannel choosing between each valve position on the valve;
Motor, said motor are used under the control of control unit, rotating the multichannel choosing to valve.
2. positioning device according to claim 1 is characterized in that: said analysis controling circuit continues to carry out this stepping coded pulse number with the coded pulse deduction back control motor that error signal produces.
3. positioning device according to claim 1 is characterized in that: said analysis controling circuit does not rotate and instrument when producing shake to valve in multichannel choosing, instrument is shaken the corresponding codes umber of pulse count this stepping coded pulse number.
4. positioning device according to claim 1 is characterized in that:
Said tuning parameter also comprises machine error, and said machine error is motor and the drive gap of multichannel choosing between the valve valve head;
Said analysis controling circuit moves to this target valve position from target valve position last time to valve in multichannel choosing traffic direction and multichannel select to valve last time traffic direction is opposite the time, machine error corresponding codes umber of pulse is counted this stepping coded pulse number.
5. according to the arbitrary described positioning device of claim 1～4, it is characterized in that:
Said analysis controling circuit calculates multichannel choosing is moved to this target valve position from traffic direction from target valve position last time to valve and multichannel the choosing corresponding coded pulse of stepping in the same way number and reverse stepping coded pulse number when the last time traffic direction of valve is identical and opposite respectively; And synchronous stepping coded pulse number and reverse stepping coded pulse number compared; Will be wherein the smaller as this stepping coded pulse number, and the choosing of definite multichannel is to this traffic direction of valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205776434U CN202402755U (en) | 2011-12-31 | 2011-12-31 | Multichannel direction selection valve positioning device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205776434U CN202402755U (en) | 2011-12-31 | 2011-12-31 | Multichannel direction selection valve positioning device |
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| CN202402755U true CN202402755U (en) | 2012-08-29 |
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| CN2011205776434U Withdrawn - After Issue CN202402755U (en) | 2011-12-31 | 2011-12-31 | Multichannel direction selection valve positioning device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537471A (en) * | 2011-12-31 | 2012-07-04 | 聚光科技(杭州)股份有限公司 | Method and device for positioning multi-channel direction selecting valve |
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2011
- 2011-12-31 CN CN2011205776434U patent/CN202402755U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537471A (en) * | 2011-12-31 | 2012-07-04 | 聚光科技(杭州)股份有限公司 | Method and device for positioning multi-channel direction selecting valve |
| CN102537471B (en) * | 2011-12-31 | 2013-07-10 | 聚光科技(杭州)股份有限公司 | Method and device for positioning multi-channel direction selecting valve |
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