CN109683508B - Steering hand wheel control system with automatic detection and BIT online self-test - Google Patents
Steering hand wheel control system with automatic detection and BIT online self-test Download PDFInfo
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- CN109683508B CN109683508B CN201811139772.8A CN201811139772A CN109683508B CN 109683508 B CN109683508 B CN 109683508B CN 201811139772 A CN201811139772 A CN 201811139772A CN 109683508 B CN109683508 B CN 109683508B
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- 238000012360 testing method Methods 0.000 title claims abstract description 87
- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 239000003990 capacitor Substances 0.000 claims description 70
- 238000005070 sampling Methods 0.000 claims description 60
- 238000002955 isolation Methods 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 4
- 239000003381 stabilizer Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 238000013459 approach Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000011897 real-time detection Methods 0.000 abstract description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
A steering hand wheel control system with automatic detection and BIT on-line self-test comprises four groups of automatic detection and on-line self-test circuits with the same structure, and the steering hand wheel control system is used for automatically detecting the disconnection condition of all leads of a steering hand wheel potentiometer, detecting the mutual short circuit condition among the leads and reporting the short circuit condition to a singlechip, and has the characteristics of comprehensive detection, high reliability and strong practicability; meanwhile, a BIT on-line self-test circuit is arranged for on-line self-testing the working state of the control device without influencing the normal operation of the control device, and the detection result is reported to the single chip machine, so that the device has the characteristics of real-time detection and reliability; the BIT on-line self-test function is mainly used for the condition of low signal frequency, particularly for steering signals, and is beneficial to greatly improving the working reliability and safety of a multi-channel and multi-redundancy steering hand wheel which is one of important ship operating components.
Description
Technical Field
The invention relates to the technical field of steering hand wheel control devices, in particular to a steering hand wheel control system with automatic detection and BIT on-line self-test.
Background
The steering hand wheel module is one of important parts for ship operation, the reliability and safety of the steering hand wheel module directly affect the safe and reliable navigation of a ship, in order to improve the operation reliability of an automatic steering instrument of the ship (especially a ship), the current steering hand wheel module of the ship is generally designed by adopting a multi-channel and multi-redundancy design method, and a multi-channel control circuit of the steering hand wheel module is arranged in a control device outside the steering hand wheel module for centralized processing, so that a multi-channel potentiometer signal of the steering hand wheel module needs to be led out into the control device outside the module through a lead wire, and the multi-channel and multi-redundancy steering hand wheel module potentiometer signal is led out through a plug and the lead wire, so that faults such as poor contact, disconnection and short circuit of the lead wire can not be avoided.
Meanwhile, the application requirements for monitoring the working state of the amplifier circuit are also increasing, and the BIT self-test technology is commonly adopted for monitoring tasks, namely, a test circuit and a test singlechip are additionally added, so that the working state of the amplifier to be tested can be monitored at any time. The self-test control circuit of the amplifier circuit mainly comprises an off-line type and an on-line type, when the off-line type test circuit is used for testing the working state of the amplifier, a change-over switch is required to be added, the signal input of the amplifier is cut off, meanwhile, a self-test voltage signal is input, if the output signal of the amplifier is consistent with a design signal, the amplifier circuit is determined to work normally, but the change-over switch is added, the circuit links are inevitably increased, the working reliability of the amplifier circuit is further reduced, and the self-test control circuit has limitation; when the on-line test circuit is in the working state of the test amplifier, the input self-test voltage signal is additionally added to the signal input end of the amplifier, and if the output signal of the amplifier is consistent with the design signal, the amplifier circuit is determined to work normally. The working signal is directly changed during the test, so that the working state of the amplifier is easily shifted to influence the normal working of the amplifier; both self-test control circuits have limitations.
In order to timely find out such fault problems as poor contact, disconnection, short circuit and the like of the lead, the working state of the amplifier circuit is monitored on line in real time, and the development of a device for solving the problems is a technical problem to be solved urgently by a person skilled in the art.
Disclosure of Invention
The technical problem solved by the invention is to provide a steering hand wheel control system with automatic detection and BIT on-line self-test, so as to solve the defects in the background technology.
The technical problems solved by the invention are realized by adopting the following technical scheme:
the steering hand wheel control system with the automatic detection and BIT on-line self-test comprises four groups of automatic detection and on-line self-test circuits with the same structure, wherein each group of automatic detection and on-line self-test circuit comprises an input end, a first test voltage generator, a second test voltage generator, a potentiometer power supply circuit, an amplifier, an A/D sampling control circuit, an A/D sampling circuit and an output end, one end of the input end is connected with the potentiometer of the steering hand wheel, the other end of the input end is connected with the potentiometer power supply circuit, the potentiometer power supply circuit is connected with the A/D sampling circuit and the amplifier, the first test voltage generator is connected with the potentiometer power supply circuit, the second test voltage generator is connected with the amplifier, the A/D sampling control circuit is respectively connected with the first test voltage generator, the second test voltage generator and the A/D sampling circuit, the A/D sampling circuit is connected with the output end, the output end outputs signals amplified by the potentiometer signals, and the input end comprises a first lead wire, a third lead wire and a grounding wire; the specific structure is as follows:
the first lead is respectively connected with the second capacitor and the fifth resistor of the A/D sampling circuit and the potentiometer power supply circuit;
the second lead is respectively connected with the A/D sampling circuit, the first capacitor, the first resistor and the third resistor of the first test voltage generator and the fifteenth resistor of the amplifier, and the first capacitor is connected with the grounding wire;
the third lead is respectively connected with a third capacitor and a seventh resistor of the A/D sampling circuit and the potentiometer power supply circuit;
the seventeenth resistor of the amplifier is respectively connected with the A/D sampling circuit, one end of the eighth capacitor and the output end, and the other end of the eighth capacitor is connected with the grounding wire; the first test voltage generator is connected with the A/D sampling control circuit through a fourth resistor; the second test voltage generator is connected with the A/D sampling control circuit through a thirteenth resistor.
In the invention, the first test voltage generator comprises a first resistor, a second resistor, a first triode and a second diode, wherein one end of the first resistor is connected with one end of the third resistor, the other end of the first resistor is connected with a ground wire, the other end of the third resistor is connected with one end of the second diode, the other end of the second diode is connected with one end of the first triode, the other end of the first triode is connected with the fourth resistor, and the first triode is also connected with the second resistor in parallel.
In the invention, the second test voltage generator comprises a ninth resistor, a thirteenth resistor and a third triode, wherein one end of the ninth resistor is respectively connected with one end of the tenth resistor and one end of the eleventh resistor, the other end of the ninth resistor is connected with a grounding wire, and the other end of the tenth resistor is connected with one end of the third triode; the other end of the third triode is connected with a thirteenth resistor, and the third triode is also connected with a twelfth resistor in parallel.
In the invention, the potentiometer power supply circuit comprises a fifth resistor, a eighth resistor, a second capacitor and a fifth capacitor, wherein one end of the fifth resistor is connected with one end of the second capacitor, the other end of the second capacitor is connected with a grounding wire, the other end of the fifth resistor is respectively connected with one end of a fourth capacitor and a sixth resistor, and the other end of the fourth resistor is connected with the grounding wire; one end of the seventh resistor is connected with one end of the third capacitor, the other end of the third capacitor is connected with the ground wire, the other end of the seventh resistor is connected with one end of the fifth capacitor and the eighth resistor respectively, and the other end of the fifth capacitor is connected with the ground wire.
In the invention, the amplifier circuit comprises fourteenth to seventeenth resistors, a sixth capacitor, a seventh capacitor and a first operational amplifier, wherein the first operational amplifier is respectively connected with one ends of the fifteenth resistor, the sixteenth resistor, the seventeenth resistor, the sixth capacitor and the seventh capacitor and is also connected with the fourteenth resistor in parallel, the other end of the sixteenth resistor is connected with a grounding wire, the other end of the sixth capacitor is connected with the grounding wire, and the other end of the seventh capacitor is connected with the grounding wire.
In the invention, the A/D sampling circuit comprises a sampling integrated circuit, a ninth capacitor, a seventeenth capacitor, an eighteenth resistor and a voltage stabilizer.
In the invention, an isolation circuit is arranged between the A/D sampling control circuit and the fourth resistor and the thirteenth resistor, and an isolation circuit is arranged between the A/D sampling control circuit and the A/D sampling circuit.
In the present invention, the second test voltage generator is connected to the amplifier through an eleventh resistor.
The beneficial effects are that: the invention is composed of four groups of automatic detection and online self-test circuits with the same structure, and the invention is used for automatically detecting the broken line condition of all leads of the steering hand wheel potentiometer by arranging the first test voltage generator, the potentiometer power supply circuit and the A/D sampling circuit, and also can detect the mutual short circuit condition among the leads and report the mutual short circuit condition to the singlechip, thereby having the characteristics of comprehensive detection, high reliability and strong practicability; meanwhile, a BIT on-line self-test circuit (namely a second test voltage generator and an A/D sampling circuit) is arranged and used for on-line self-testing the working state of the control device without influencing the normal operation of the control device, and the detection result is reported to the single-chip machine, so that the device has the characteristics of real-time detection and reliability; the BIT on-line self-test function is mainly used for the condition of low signal frequency, particularly for steering signals, and is beneficial to greatly improving the working reliability and safety of a multi-channel and multi-redundancy steering hand wheel which is one of important ship operating components.
Drawings
FIG. 1 is a schematic block diagram of a preferred embodiment of the present invention.
Fig. 2 is a circuit block diagram of a preferred embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the invention easy to understand.
Referring to FIG. 1-2, a steering wheel control system with automatic detection and BIT on-line self-test comprises four groups of automatic detection and on-line self-test circuits with the same structure, each group of automatic detection and on-line self-test circuits comprises an Input end Input1, a first test voltage generator BIT Online1, a second test voltage generator BIT Online2, a potentiometer power supply Circuit I, an Amplifier, an A/D sampling control Circuit A/D and level control, an A/D sampling Circuit, an Output end Output1, a first triode V1, a second diode V2, a third triode V3, a first resistor R1-an eighteenth resistor R18, a first capacitor C1-a seventeenth capacitor C17, a first operational Amplifier N1, an A/D sampling integrated Circuit N2, a voltage stabilizer N3 and an isolation Circuit, one end of the Input end is connected with a steering hand wheel potentiometer, the other end of the Input end is connected with a potentiometer power supply Circuit, the potentiometer power supply Circuit is connected with an A/D sampling Circuit and an Amplifier, a first test voltage generator is connected with the potentiometer power supply Circuit, a second test voltage generator is connected with the Amplifier, an A/D sampling control Circuit is respectively connected with the first test voltage generator, the second test voltage generator and the A/D sampling Circuit, the A/D sampling Circuit is connected with the Output end, the Output end outputs signals amplified by potentiometer signals, and the Input end comprises first leads P1-R1 to third leads P1-R3 and a grounding wire P1GND, and the specific structure is as follows:
the first leads P1-R1 are respectively connected with the second capacitor C2 and the fifth resistor R5 of the A/D sampling Circuit and the potentiometer power supply Circuit (Circuit I);
the second lead wires P1-R2 are respectively connected with an A/D sampling circuit, a first capacitor C1, a first resistor R1 and a third resistor R3 of a first test voltage generator (BIT Online 1) and a fifteenth resistor R15 of an Amplifier (Amplifier), and the first capacitor C1 is connected with a grounding wire;
the third lead wires P1-R3 are respectively connected with a third capacitor C3 and a seventh resistor R7 of the A/D sampling Circuit and the potentiometer power supply Circuit (Circuit I);
a seventeenth resistor R17 of the Amplifier (Amplifier) is respectively connected with one end of an A/D sampling circuit and an eighth capacitor C8 and an Output end (Output 1), and the other end of the eighth capacitor is connected with a grounding wire; the first test voltage generator (BIT Online 1) is connected with the A/D sampling control circuit (A/D and level control) through a fourth resistor R4; the second test voltage generator (BIT Online 2) is connected with the A/D sampling control circuit through a thirteenth resistor R13, an isolation circuit is arranged between the A/D sampling control circuit and the fourth resistor R4 as well as between the A/D sampling control circuit and the thirteenth resistor R13, the second test voltage generator (BIT Online 2) is connected with the Amplifier (Amplifier) through an eleventh resistor R11, and an isolation circuit is arranged between the A/D sampling control circuit and the control end of the A/D sampling circuit;
the first test voltage generator (BIT Online 1) comprises a first resistor R1-a fourth resistor R4, a first triode V1 and a second diode V2, wherein one end of the first resistor R1 is connected with one end of a third resistor R3, the other end of the first resistor R1 is connected with a grounding wire, the other end of the third resistor R3 is connected with one end of the second diode V2, the other end of the second diode V2 is connected with one end of the first triode V1, the other end of the first triode V1 is connected with the fourth resistor R4, and the first triode V1 is also connected with the second resistor R2 in parallel;
the second test voltage generator (BIT Online 2) comprises a ninth resistor R9-a thirteenth resistor R13 and a third triode V3, wherein one end of the ninth resistor R9 is respectively connected with one end of a tenth resistor R10 and one end of an eleventh resistor R11, the other end of the ninth resistor R9 is connected with a grounding wire, and the other end of the tenth resistor R10 is connected with one end of the third triode V3; the other end of the third triode V3 is connected with a thirteenth resistor R13, and the third triode V3 is also connected with a twelfth resistor R12 in parallel;
the potentiometer power supply Circuit (Circuit I) comprises fifth to eighth resistors R5 to R8 and second to fifth capacitors C2 to C5, wherein one end of the fifth resistor R5 is connected with one end of the second capacitor C2, the other end of the second capacitor C2 is connected with a grounding wire, the other end of the fifth resistor R5 is respectively connected with one end of a sixth resistor R6 and one end of a fourth capacitor C4, and the other end of the fourth capacitor C4 is connected with the grounding wire; one end of a seventh resistor R7 is connected with one end of a third capacitor C3, the other end of the third capacitor C3 is connected with a ground wire, the other end of the seventh resistor R7 is respectively connected with one end of an eighth resistor R8 and one end of a fifth capacitor C5, and the other end of the fifth capacitor C5 is connected with the ground wire;
the Amplifier circuit (Amplifier) comprises fourteenth to seventeenth resistors R14 to R17, a sixth capacitor C6, a seventh capacitor C7 and a first operational Amplifier N1, wherein the first operational Amplifier N1 is respectively connected with one end of the fifteenth resistor R15, the sixteenth resistor R16, the seventeenth resistor R17, the sixth capacitor C6 and the seventh capacitor C7, and is also connected with the fourteenth resistor R14 in parallel, the other end of the sixteenth resistor R16 is connected with a grounding wire, the other end of the sixth capacitor C6 is connected with the grounding wire, and the other end of the seventh capacitor C7 is connected with the grounding wire;
the A/D sampling circuit (A/D) comprises a sampling integrated circuit N2, a ninth capacitor C9-seventeenth capacitor C17, an eighteenth resistor R18 and a voltage stabilizer N3, and is designed according to the typical application circuit of the A/D sampling integrated circuit;
principle of operation
1. Working principle of automatic detection circuit for signal wire breakage and short circuit
As shown in fig. 2, the automatic detection function of signal disconnection and short circuit mainly comprises a first test voltage generator (BIT O)nLINE 1), potentiometer power supply Circuit (Circuit I) and A/D sampling Circuit, the resistance value of the steering hand wheel potentiometer is 2KΩ, when the first lead P1-R1 end of the steering hand wheel potentiometer and the grounding wire P1GND are normal, U P1-R1 <9V; when only the first lead P1-R1 end is disconnected, U P1-R1 =9v, whereby it can be judged that the first lead P1-R1 ends are disconnected, and similarly, the third lead P1-R3 ends are disconnected;
real-time on-line monitoring U output1 Voltage, record U output1 The voltage value turns on the first triode V1, the +5V voltage is added into the input end of the Amplifier (Amplifier) through the first triode V1, the second diode V2 and the third resistor R3, if the second lead P1-R2 is not disconnected, the applied voltage is divided and pulled down (U) on the second lead P1-R2 because the resistance value of the third resistor R3 is large (120 KΩ) P1-R2 Variation of<0.1V) at which time U output1 The voltage value is kept unchanged (change<0.1V), i.e., the judgment method is: u before and after the first triode V1 is conducted output1 The voltage value remains unchanged (change<0.1V), it is determined that the ends P1-R2 of the second lead are not disconnected, and if the first transistor V1 is turned on before and after U output1 The voltage value changes by 0.2V-0.3V, and the second lead P1-R2 end is judged to be disconnected;
even if the GND end of the grounding lead P1 is disconnected, the circuit can still work normally and is not affected, and only a small amount of change of the zero position of the circuit is possible, so that the judgment of whether the grounding lead P1GND is disconnected or not is not needed;
a similar approach can infer whether each lead has a short circuit condition.
2. BIT online self-test working principle
The BIT on-line self-test function is mainly completed by a second test voltage generator (BIT Online 2) and an A/D sampling circuit, is mainly used for the condition of lower signal frequency, particularly for steering signals, as the steering signals are signals for controlling the steering engine to rotate, the steering engine motion is generally between (2.3-4/7 degrees)/S, the corresponding 1-degree steering angle corresponds to 0.25V voltage, and as long as the steering signal voltage changes rapidly (several milliseconds-tens milliseconds), the steering signal changes back to the original value before steering of the steering engine begins, the measuring circuit can not influence a steering engine control loop;
when the self-test is performed during the period without steering, the A/D sampling control circuit (A/D and level coutrol) rapidly controls the third triode V3 to be conducted, the +5V voltage is rapidly added into the first operational amplifier N1 through the third triode V3 and the eleventh resistor R11, if U P1O The measured value changes according to the set value before and after the third triode V3 is conducted, so that the control device is indicated to work normally, otherwise, the control device can be judged to have faults.
In the case of self-test during steering, U should be considered to be excluded when the steering engine is normally steering P1O The magnitude of the measured value change.
3. AD sampling circuit working principle
The working data of the AD sampling IC is referred.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The steering hand wheel control system with the automatic detection and BIT on-line self-test functions is characterized by comprising four groups of automatic detection and on-line self-test circuits with the same structure, wherein each group of automatic detection and on-line self-test circuits comprises an input end, a first test voltage generator, a second test voltage generator, a potentiometer power supply circuit, an amplifier, an A/D sampling control circuit, an A/D sampling circuit and an output end; the specific structure is as follows:
the first lead is respectively connected with the second capacitor and the fifth resistor of the A/D sampling circuit and the potentiometer power supply circuit;
the second lead is respectively connected with the A/D sampling circuit, the first capacitor, the first resistor and the third resistor of the first test voltage generator and the fifteenth resistor of the amplifier, and the first capacitor is connected with the grounding wire;
the third lead is respectively connected with a third capacitor and a seventh resistor of the A/D sampling circuit and the potentiometer power supply circuit; the seventeenth resistor of the amplifier is respectively connected with the A/D sampling circuit, one end of the eighth capacitor and the output end, and the other end of the eighth capacitor is connected with the grounding wire; the first test voltage generator is connected with the A/D sampling control circuit through a fourth resistor; the second test voltage generator is connected with the A/D sampling control circuit through a thirteenth resistor;
the automatic detection is completed by a first test voltage generator, a potentiometer power supply circuit and an A/D sampling circuit, the resistance value of the steering hand wheel potentiometer is 2KΩ, and U P1-R1 is less than 9V when the first lead P1-R1 end of the steering hand wheel potentiometer and the ground wire P1GND are normal; when only the ends of the first leads P1-R1 are disconnected, U P1-R1=9V, thereby judging that the ends of the first leads P1-R1 are disconnected, and similarly judging that the ends of the third leads P1-R3 are disconnected; the method comprises the steps of monitoring U output1 voltage on line in real time, recording the voltage value of the U output1, enabling a first triode V1 to be conducted, enabling +5V voltage to be added into the input end of an amplifier through the first triode V1, a second diode V2 and a third resistor R3, enabling the voltage value of the U output1 to be kept unchanged when the voltage value of the third resistor R3 is large (120 KΩ), enabling the applied voltage to be pulled down by partial voltage on the end of the second lead P1-R2 because the impedance of the end of the second lead P1-R2 to the ground is small if the end of the second lead P1-R2 is not disconnected, and judging that: if the voltage value of U output1 before and after the first triode V1 is conducted is kept unchanged, judging that the ends of the second leads P1-R2 are not disconnected, and if the voltage value of U output1 before and after the first triode V1 is conducted is changed by 0.2V-0.3V, judging that the ends of the second leads P1-R2 are disconnected; a similar approach can infer whether each lead has a short circuit condition;
the BIT on-line self-test is completed by the second test voltage generator and the A/D sampling circuit, and is mainly used for the condition of lower signal frequency, particularly for steering signals, because the steering signals are signals for controlling the steering engine to rotate, the steering engine moves between (2.3-4/7 degrees)/S, the corresponding 1-degree steering angle corresponds to 0.25V voltage, and as long as the steering signal voltage changes rapidly, the steering signal voltage changes back to the original value before steering of the steering engine is not started, the measuring circuit cannot influence the steering engine control loop; when the self-test is carried out during the period without steering, the A/D sampling control circuit rapidly controls the third triode V3 to be conducted, +5V voltage is rapidly added into the first operational amplifier N1 through the third triode V3 and the eleventh resistor R11, if the measured value of U P O changes according to a set value before and after the third triode V3 is conducted, the control device is indicated to work normally, otherwise, the control device can be judged to have faults; in the case of self-test during steering, the change of the U P O measured value at the time of normal steering of the steering engine should be considered to be excluded.
2. The steering wheel control system with automatic detection and BIT online self-test according to claim 1, wherein the first test voltage generator comprises a first resistor, a second resistor, a third resistor, a first triode and a second diode, one end of the first resistor is connected with one end of the third resistor, the other end of the first resistor is connected with a ground wire, the other end of the third resistor is connected with one end of the second diode, the other end of the second diode is connected with one end of the first triode, the other end of the first triode is connected with the fourth resistor, and the first triode is connected in parallel with the second resistor.
3. The steering hand wheel control system with automatic detection and BIT on-line self-test according to claim 1, wherein the second test voltage generator comprises a ninth resistor, a thirteenth resistor and a third triode, one end of the ninth resistor is connected with one end of the tenth resistor and one end of the eleventh resistor respectively, the other end of the ninth resistor is connected with a ground wire, and the other end of the tenth resistor is connected with one end of the third triode; the other end of the third triode is connected with a thirteenth resistor, and the third triode is also connected with a twelfth resistor in parallel.
4. The steering hand wheel control system with automatic detection and BIT on-line self-test according to claim 1, wherein the potentiometer power supply circuit comprises fifth to eighth resistors, second to fifth capacitors, one end of the fifth resistor is connected with one end of the second capacitor, the other end of the second capacitor is connected with a grounding wire, the other end of the fifth resistor is respectively connected with one end of a fourth capacitor and a sixth resistor, and the other end of the fourth resistor is connected with the grounding wire; one end of the seventh resistor is connected with one end of the third capacitor, the other end of the third capacitor is connected with the ground wire, the other end of the seventh resistor is connected with one end of the fifth capacitor and the eighth resistor respectively, and the other end of the fifth capacitor is connected with the ground wire.
5. The steering hand wheel control system with automatic detection and BIT on-line self-test according to claim 1, wherein the amplifier circuit comprises fourteenth to seventeenth resistors, a sixth capacitor, a seventh capacitor and a first operational amplifier, wherein the first operational amplifier is respectively connected with one ends of the fifteenth resistor, the sixteenth resistor, the seventeenth resistor, the sixth capacitor and the seventh capacitor, is also connected with the fourteenth resistor in parallel, the other end of the sixteenth resistor is connected with a grounding wire, the other end of the sixth capacitor is connected with the grounding wire, and the other end of the seventh capacitor is connected with the grounding wire.
6. The steering wheel control system with automatic detection and BIT online self-test according to claim 1, wherein the a/D sampling circuit comprises a sampling integrated circuit, a ninth capacitor to seventeenth capacitor, an eighteenth resistor and a voltage stabilizer.
7. The steering wheel control system with automatic detection and BIT online self-test according to claim 1, wherein an isolation circuit is arranged between the a/D sampling control circuit and the fourth resistor and thirteenth resistor, and an isolation circuit is arranged between the a/D sampling control circuit and the a/D sampling circuit.
8. The steering wheel control system with automatic detection and BIT online self-test of claim 1, wherein the second test voltage generator is connected to the amplifier through an eleventh resistor.
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| CN201811139772.8A CN109683508B (en) | 2018-09-28 | 2018-09-28 | Steering hand wheel control system with automatic detection and BIT online self-test |
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| CN201811139772.8A CN109683508B (en) | 2018-09-28 | 2018-09-28 | Steering hand wheel control system with automatic detection and BIT online self-test |
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| CN109683508A CN109683508A (en) | 2019-04-26 |
| CN109683508B true CN109683508B (en) | 2024-01-02 |
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| CN111273191B (en) * | 2020-03-03 | 2022-05-27 | 中国船舶重工集团公司第七0七研究所九江分部 | RVDT/LVDT signal processing circuit and detection method |
| CN113074770A (en) * | 2021-04-02 | 2021-07-06 | 广西玉柴机器股份有限公司 | Numerically-controlled hand wheel wire breakage test method |
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| CN202053255U (en) * | 2011-03-28 | 2011-11-30 | 南京敦超机电科技有限公司 | Control system with man-machine interface for manipulator with multiple steering engines |
| CN204575787U (en) * | 2015-02-12 | 2015-08-19 | 中航商用航空发动机有限责任公司 | With the self-monitoring treatment circuit for resistive sensor |
| CN106647701A (en) * | 2016-12-13 | 2017-05-10 | 安徽航瑞航空动力装备有限公司 | Aero-engine controller BIT (Built-In Testing) method |
| CN208766500U (en) * | 2018-09-28 | 2019-04-19 | 中国船舶重工集团公司第七0七研究所九江分部 | A kind of band detects and the steering hand wheel control device of the online self-test of BIT automatically |
-
2018
- 2018-09-28 CN CN201811139772.8A patent/CN109683508B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202053255U (en) * | 2011-03-28 | 2011-11-30 | 南京敦超机电科技有限公司 | Control system with man-machine interface for manipulator with multiple steering engines |
| CN204575787U (en) * | 2015-02-12 | 2015-08-19 | 中航商用航空发动机有限责任公司 | With the self-monitoring treatment circuit for resistive sensor |
| CN106647701A (en) * | 2016-12-13 | 2017-05-10 | 安徽航瑞航空动力装备有限公司 | Aero-engine controller BIT (Built-In Testing) method |
| CN208766500U (en) * | 2018-09-28 | 2019-04-19 | 中国船舶重工集团公司第七0七研究所九江分部 | A kind of band detects and the steering hand wheel control device of the online self-test of BIT automatically |
Non-Patent Citations (1)
| Title |
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| 一种无人机用小型双余度电动伺服舵机的设计;王慧娟;王道波;微电机;第43卷(第3期);第24~27页 * |
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| CN109683508A (en) | 2019-04-26 |
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