CN113960952A - Contactless electromagnetic control and execution system - Google Patents
Contactless electromagnetic control and execution system Download PDFInfo
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- CN113960952A CN113960952A CN202111576549.1A CN202111576549A CN113960952A CN 113960952 A CN113960952 A CN 113960952A CN 202111576549 A CN202111576549 A CN 202111576549A CN 113960952 A CN113960952 A CN 113960952A
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- 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
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- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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- G—PHYSICS
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
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Abstract
The invention discloses a contactless electromagnetic control and execution system, which comprises a fixed control unit and a follow-up execution unit; the fixed control unit is used for converting the instruction control signal into a control voltage signal, and after a reference voltage is superposed on the control voltage signal, the control voltage signal superposed with the reference voltage is converted into electromagnetic energy and electromagnetic signals through a main excitation coil of the fixed control unit, and the electromagnetic energy and electromagnetic signals are used for being transmitted to a receiving coil in the follow-up execution unit; the follow-up execution unit is used for converting the electromagnetic energy into electric energy through the receiving coil and supplying power to the follow-up execution unit; the servo execution unit is also used for separating the reference voltage signal from the control voltage signal from the electromagnetic signal so as to decode the control voltage signal into an instruction control signal, and an execution device in the servo execution unit completes a corresponding instruction according to the instruction control signal.
Description
Technical Field
The invention relates to the field of electromagnetic control, in particular to a contactless electromagnetic control and execution system.
Background
The traditional dynamic-electrostatic signal information transmission system generally transmits information by means of collecting rings (devices), electric brushes, active photoelectricity, active radio frequency, active ultrasonic waves and the like, and the methods have problems when used for transmitting information;
when the current collector is adopted to transmit information, the installation and the use of a current collecting ring-electric brush system are restricted under the environment with strict requirements on volume and position space; the electric spark and the current interruption phenomenon can be generated when the electric brush and the collector ring are in operation due to friction between the electric brush and the collector ring, the electric brush cannot be used in a combustible explosion-proof environment, a complex chemical environment and a high-precision transmission environment, and the use scene is limited; and because the brush and the slip ring are in frictional contact, the service life is limited, the replacement on some large-scale equipment and special environment equipment is very difficult, and the equipment maintenance cost and the operation cost are greatly increased.
When active photoelectric transmission information is adopted, a return part power supply battery needs to be replaced or charged regularly; and can not work in the working occasion with poor air permeability; frequent maintenance of the light-emitting-light-sensitive elements is required, increasing the workload.
If active radio frequency transmission is adopted, a return part power supply battery needs to be replaced or charged periodically; the electromagnetic radiation cleaning agent cannot be used in a complex electromagnetic environment or a place requiring high electromagnetic radiation cleanliness; and the active radio frequency circuit has a complex structure and high manufacturing cost.
If active ultrasound transmission is used: the return part power supply battery needs to be replaced or charged periodically; and places with heavy acoustic pollution cannot be used; the accuracy is low when information is transmitted;
in summary, the following problems exist in the existing systems using dynamic-electrostatic signals to transmit information: 1. the use scenarios are limited; 2. the information is easily influenced by the external environment in the transmission process, so that the information transmission efficiency is not high; 3. most systems need to use extra power supply, and components in the systems are replaced, so that the cost is high and the efficiency is low.
Disclosure of Invention
The invention aims to solve the technical problem of how to transmit information by using an electromagnetic field, and particularly provides a non-contact electromagnetic control and execution system for the field of aircrafts with higher requirements on information transmission environments, wherein the non-contact electromagnetic control and execution system comprises a fixed control and follow-up execution part, and the fixed control part is used for converting a control signal into electromagnetic energy and an electromagnetic signal through a main excitation coil after processing and transmitting the electromagnetic energy and the electromagnetic signal to a receiving coil in the follow-up execution system; the servo execution system converts electromagnetic energy sent by the excitation coil of the fixed control system into electric energy through the receiving coil to supply power to the system, and separates a control voltage signal from an electromagnetic signal to control the servo execution system to complete a control instruction.
The invention is realized by the following technical scheme:
the contactless electromagnetic control and execution system comprises a fixed control unit and a follow-up execution unit;
the fixed control unit is used for converting the instruction control signal into a control voltage signal, and after a reference voltage is superposed on the control voltage signal, the control voltage signal superposed with the reference voltage is converted into an electromagnetic energy and electromagnetic signal through a main excitation coil of the fixed control unit, and the electromagnetic energy and electromagnetic signal are used for being transmitted to a receiving coil in the follow-up execution unit;
the follow-up execution unit is used for converting the electromagnetic energy into electric energy through the receiving coil, and the electric energy is used for supplying power to the follow-up execution unit; the follow-up execution unit is also used for separating the reference voltage signal from the control voltage signal from the electromagnetic signal so as to decode the control voltage signal into an instruction control signal, and an execution device in the follow-up execution unit completes a corresponding instruction according to the instruction control signal.
In the prior information transmission, when the modes of photoelectric transmission, ultrasonic wave or electric brush and the like are adopted, the influence of factors such as magnetic field interference, sound field interference and the like in the use environment is great, and the information cannot be completely and accurately transmitted; the invention has the advantages that the magnetic field intensity generated by the invention is stable and strong, so that the external magnetic field interference can be shielded, the control voltage signal is loaded in the reference voltage based on the stable field intensity, the superposed magnetic field is used for signal transmission, the interference of the environment is small, and the information can be completely and accurately transmitted.
Further, the fixed control unit comprises a computer main control module, the follow-up execution unit comprises an electric energy conversion module and a control module,
the computer main control module is internally provided with an operation program, converts the instruction control signal into a control voltage signal according to the operation program and the reference rotating speed, and generates an excitation magnetic field in the main excitation coil according to the control voltage signal on which the reference voltage is superposed by superposing a reference voltage on the control voltage signal;
the receiving coil converts an excitation magnetic field generated by the main excitation coil into a voltage signal;
the electric energy conversion module converts the voltage signal into a power supply after rectification, voltage stabilization and energy storage, and supplies power to the control module;
the control module obtains a voltage signal from a voltage sampling port at the output end of the receiving coil, compares and decodes the voltage signal with a reference voltage preset in the control module, and controls the output end of the control module to output an instruction control signal.
Further, the computer master control module comprises: the device comprises a control signal decoder module, a signal converter module, a signal modulation module, a reference voltage generator, a superposition module and a power modulation module;
the reference voltage generator is used for generating a reference voltage;
the control signal decoder module is used for decoding the input instruction control signal according to the coding mode and outputting a first control signal;
the signal converter module performs proportional modulation on the reference voltage according to the signal value of the first control signal to obtain a second control voltage signal which is proportional to the first control signal;
the signal modulation module carries out compensation and correction on the signal value of the second control voltage signal according to the voltage value of the reference voltage, and carries out inverse proportion modulation on the compensated and corrected second control voltage signal according to the rotating speed value acquired from the rotating speed sensor to obtain a third control voltage signal in inverse proportion to the rotating speed;
the superposition module is used for carrying out addition operation on the third control voltage signal and the voltage value of the reference voltage to obtain a fourth control voltage signal;
and the power modulation module is used for modulating the signal value of the fourth control voltage signal and the calibration power of the follow-up execution unit to obtain the voltage and the current required by the corresponding magnetic field generated by the main excitation transmitting coil.
Further, the control module includes: a receiving and decoding module and a system control module;
the receiving decoding module is used for comparing the control voltage signal received by the receiving coil with a preset reference voltage in the receiving decoding module, removing the reference voltage signal in the control voltage signal after addition and subtraction operation, and obtaining a corresponding instruction control signal after decoding conversion;
the system control module is used for comparing the instruction control signal with a feedback signal of an execution device in the follow-up execution unit and accurately controlling the working state of the execution device according to a comparison result.
Further, the fixed control unit further comprises a first power supply system, wherein the first power supply system comprises a voltage stabilizing module and a power management module;
the voltage stabilizing module is used for stabilizing the voltage of an external power supply and providing a stable voltage for the power supply management module;
the power management module is a control signal decoder module, a signal converter module, a signal modulation module, a reference voltage generator, a superposition module and a power modulation module.
Further, the power management module comprises a voltage boosting part and a voltage reducing part, wherein the voltage boosting part is used for providing high-voltage power supply for the power modulation module and the reference voltage generator;
the voltage reduction part provides low-voltage power supply for the control signal decoder module, the signal converter module, the signal modulation module and the superposition module.
Further, the follow-up execution unit further comprises a second power supply system, and the second power supply system comprises a battery, a rectification and voltage stabilization module and a power supply management module;
the rectification and voltage stabilization module is used for rectifying and stabilizing the received voltage and providing stable voltage for the power supply management module;
the power supply management module provides an auxiliary power supply for the control module of the follow-up execution unit;
the battery is used for providing an auxiliary power supply for the power supply management module.
Furthermore, the power supply management module comprises a boosting unit, a voltage reduction unit and a battery management unit, wherein the boosting unit is used for providing high-voltage power supply for the system control module;
the voltage reduction unit provides low-voltage power supply for the receiving and decoding module;
the battery management unit is used for controlling the battery to be accessed into the second power supply system without clearance and supplying power to the second power supply system; the battery management unit performs periodic charge and discharge maintenance on the battery.
Furthermore, the fixed control unit further comprises a monitoring return signal receiving coil, the follow-up execution unit further comprises a monitoring return excitation coil and a monitoring sensor, the control module collects a monitoring signal from the monitoring sensor, compares the monitoring signal with a preset reference voltage, subtracts a reference voltage signal from the monitoring signal, outputs a monitoring return signal, and transmits the monitoring return signal and the reference voltage signal to the fixed control unit through the monitoring return excitation coil;
and the computer main control module decodes the monitoring return signal, superposes the reference voltage on the monitoring return signal, modulates and restores the monitoring signal and outputs the monitoring signal.
The monitoring return process is to follow the following execution units such as: the data of temperature, pressure and the like needing to be monitored are transmitted to the fixed control unit in a non-contact manner, and the data signals are output to display the information of temperature, pressure and the like in the system after being decoded by the fixed control unit. The transmission process of the monitoring signal is the same in principle and the opposite process compared with the transmission of the control voltage signal.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the invention has the beneficial effects that:
through the non-contact electromagnetic control and execution system, the control voltage signal is modulated by superposing the basic voltage through superposing the magnetic strength, and then the control voltage signal is separated from the receiving end, so that the non-contact transmission of the signal is realized, the superposed magnetic field is not easily interfered by the environment, and the information transmission is more efficient; and the power supply system provides high-voltage and low-voltage power supply for the system, so that on one hand, the current can be reduced, the heating is reduced, and the working efficiency of each module is improved, on the other hand, the low voltage enables each module in the system to work more safely, and in addition, in order to realize non-contact control, the invention has a monitoring return function and can monitor the monitoring data in the follow-up execution unit.
Drawings
In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort. In the drawings:
FIG. 1 is an overall block diagram of a system in one embodiment of the invention;
FIG. 2 is a block diagram of a circuit for fixing a control unit according to an embodiment of the present invention;
FIG. 3 is a block diagram of a circuit of a slave execution unit in an embodiment of the present invention;
FIG. 4 is a graph showing the relationship between the input voltage and the rotational speed of the main field coil in the on-off control mode according to the present invention;
FIG. 5 is a graph showing the relationship between the output voltage and the rotation speed of the receiving coil in the switch control mode according to the present invention;
FIG. 6 is a graph showing the relationship between the input voltage and the rotational speed of the main field coil in the proportional control mode according to the present invention;
FIG. 7 is a diagram of the relationship between the output voltage of the receiving coil and the rotation speed in the proportional control mode according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
The non-contact electromagnetic control and execution system of the embodiment 1 comprises a fixed control unit and a follow-up execution unit;
the fixed control unit is used for converting the instruction control signal into a control voltage signal, and after a reference voltage is superposed on the control voltage signal, the control voltage signal superposed with the reference voltage is converted into an electromagnetic energy and electromagnetic signal through a main excitation coil of the fixed control unit, and the electromagnetic energy and electromagnetic signal are used for being transmitted to a receiving coil in the follow-up execution unit;
the follow-up execution unit is used for converting the electromagnetic energy into electric energy through the receiving coil, and the electric energy is used for supplying power to the follow-up execution unit; the follow-up execution unit is also used for separating the reference voltage signal from the control voltage signal from the electromagnetic signal so as to decode the control voltage signal into an instruction control signal, and an execution device in the follow-up execution unit completes a corresponding instruction according to the instruction control signal.
Specifically, as shown in fig. 1, the fixed control unit includes a computer main control module, the follow-up execution unit includes an electric energy conversion module and a control module,
the computer main control module is internally provided with an operation program, converts the instruction control signal into a control voltage signal according to the operation program and the reference rotating speed, and generates an excitation magnetic field in the main excitation coil according to the control voltage signal on which the reference voltage is superposed by superposing a reference voltage on the control voltage signal;
the receiving coil converts an excitation magnetic field generated by the main excitation coil into a voltage signal;
the electric energy conversion module converts the voltage signal into a power supply after rectification, voltage stabilization and energy storage, and supplies power to the control module;
the control module obtains a voltage signal from a voltage sampling port at the output end of the receiving coil, compares and decodes the voltage signal with a reference voltage preset in the control module, and controls the output end of the control module to output an instruction control signal.
Example 2
On the basis of embodiment 1, in this embodiment 2, the contactless electromagnetic control and execution system includes a fixed control unit and a follow-up execution unit, wherein, as shown in fig. 2, the computer master control module includes: the device comprises a control signal decoder module, a signal converter module, a signal modulation module, a reference voltage generator, a superposition module and a power modulation module;
the reference voltage generator is used for generating a reference voltage;
the control signal decoder module is used for decoding the input instruction control signal according to the coding mode and outputting a first control signal; if a plurality of command control signals exist, the command control signals need to be separated according to actual operation requirements;
the signal converter module performs proportional modulation on the reference voltage according to the signal value of the first control signal to obtain a second control voltage signal which is proportional to the first control signal;
the signal modulation module carries out compensation and correction on the signal value of the second control voltage signal according to the voltage value of the reference voltage, and carries out inverse proportion modulation on the compensated and corrected second control voltage signal according to the rotating speed value acquired from the rotating speed sensor CW to obtain a third control voltage signal which is in inverse proportion to the rotating speed;
because the rotating speed of an executing device in the system is in a constantly changing state, in order to enable the voltage signal converted by the receiving coil to change synchronously with the input control signal, the power of the main excitation transmitting coil (which is equivalent to the modulation of the magnetic field intensity generated by the main excitation transmitting coil) must be modulated according to the rotating speed change, and the influence of the rotating speed change on the voltage signal of the receiving coil is eliminated. The signal modulation module modulates the compensated and corrected second control voltage signal according to the rotating speed value, and the third control voltage signal Vav1-4 output by modulation is in inverse proportion to the rotating speed value, namely the rotating speed is increased by Vav1-4 and is reduced, and the rotating speed is reduced by Vav1-4 and is increased, so that the third control voltage signal is stably, completely and correctly reflected in the numerical value of the second control voltage signal. And the principle of selecting inverse proportion modulation here is that the more the number of times the wire cuts the magnetic lines in unit time, the higher the voltage at the two ends of the wire is, and vice versa. The actuator rotates synchronously with the receiver coil, and the voltage of the main exciting coil (transmitter coil) needs to be adjusted when the voltage of the receiver coil is required to be stable in the change of the rotating speed.
The superposition module is used for carrying out addition operation on the third control voltage signal and the voltage value of the reference voltage to obtain a fourth control voltage signal;
the power modulation module is used for modulating the signal value of the fourth control voltage signal and the calibration power of the follow-up execution unit to obtain the voltage and the current required by the corresponding magnetic field generated by the main excitation transmitting coil;
specifically, the computer main control module may further include a parameter adjusting/data storing module for respectively exchanging and storing data with the control signal decoder module, the signal converter module, the signal modulation module and the reference voltage generator; and writing the running programs and parameters of each module, reading the stored data, and storing the running condition data of each module in the system for fault analysis, running software upgrade and the like.
As shown in fig. 3, in one embodiment, the follow-up execution unit includes a receiving coil, a receiving decoding module, a system control module and an execution device; wherein:
the receiving decoding module is used for comparing a fourth control voltage signal received by the receiving coil with a preset reference voltage in the receiving decoding module, removing the reference voltage signal in the fourth control voltage signal after addition and subtraction operation, and obtaining an instruction control signal after decoding conversion;
the system control module is used for comparing the instruction control signal with a feedback signal of the execution device and controlling the working state of the execution device according to a comparison result;
the follow-up execution unit can also comprise a data storage module which exchanges and stores data with the receiving decoding module, the system control module and the execution device respectively.
The reference voltage generated by the reference voltage generator is a compensatory voltage, and when the first control signal is 0 or no induced current is output by the receiving coil, the reference voltage is used as the continuous power supply of the electronic equipment of each module of the follow-up execution unit; when the temperature of the main excitation transmitting coil and the receiving coil rises, the electromagnetic conversion rate can be reduced, and at the moment, the basic voltage can rise to output a compensation value to correct the voltage value of the second control voltage signal, so that the voltage drop caused by the temperature rise is compensated; when the gap between the main excitation transmitting coil and the receiving coil changes and the second control voltage signal after compensation correction and the fourth control voltage signal after power modulation received by the transmitting coil of the follow-up execution unit are asynchronous, the reference voltage can adjust and compensate, and meanwhile, the compensation value is output again to correct the second control voltage signal.
Specifically, the first power supply system comprises a voltage stabilizing module and a power management module, and an external power supply isolation module and a standby battery can be arranged according to needs in actual use;
the external power supply isolation module is used for isolating voltage fluctuation when an external power supply supplies power to the fixed control unit; the voltage stabilizing module is used for stabilizing the voltage of an external power supply and providing a stable voltage for the power supply management module; the power management module provides power for the control signal decoder module, the signal converter module, the signal modulation module, the reference voltage generator, the superposition module and the power modulation module; the standby battery is used for providing an auxiliary power supply for the power management module, and can be used for supplying power under the condition of external power supply disconnection; the power management module can comprise a voltage boosting part and a voltage reducing part, wherein the voltage boosting part is used for providing high-voltage power supply for the power modulation module and the reference voltage generator, and reducing current to enable the coil to be difficult to heat; the voltage reduction part is used for controlling the signal decoder module, the signal converter module, the signal modulation module and the superposition module and providing low-voltage power supply, so that the modules work more safely; when the standby battery is used, the power management module also comprises a battery management part which is used for controlling the standby battery to be accessed into the first power supply system without clearance and supplying power to the first power supply system; the battery management part can perform periodic charging and discharging maintenance on the standby battery, so that the performance and the service life of the battery are improved.
Specifically, the second power supply system comprises a battery, a rectifying and voltage-stabilizing module and a power supply management module; in actual use, an external power supply isolation module can be arranged according to needs, and the power supply isolation module is used for isolating voltage fluctuation when an external power supply supplies power to the follow-up execution unit; the rectification voltage-stabilizing module is used for performing rectification voltage-stabilizing treatment on the voltage signal received by the receiving coil and providing stable voltage for the power supply management module; the power supply management module provides an auxiliary power supply for the receiving and decoding module, the system control module and the data storage module of the follow-up execution unit; the battery is used for providing an auxiliary power supply for the power supply management module, and the system can be switched to the battery power supply or the battery auxiliary power supply under the condition that the power generation part of the receiving coil is disconnected or the power supply is insufficient; the power supply management module comprises a boosting unit, a voltage reduction unit and a battery management unit, wherein the boosting unit is used for providing high-voltage power supply for the system control module and the execution device, and reducing current to enable the execution device to have higher working efficiency; the voltage reduction unit provides low-voltage power supply for the receiving decoding module and the data storage module, so that each module works more safely; the battery management unit is used for controlling the battery to be accessed into the second power supply system without clearance and supplying power to the second power supply system; the battery management unit carries out periodic charging and discharging maintenance on the battery, and improves the performance and the service life of the battery.
In one embodiment, the fixed control unit further comprises a monitoring return signal receiving coil, the slave execution unit further comprises a monitoring return excitation coil and a monitoring sensor, and the monitoring return process is performed in order to make the slave execution unit have the following characteristics such as: the data of temperature, pressure and the like needing to be monitored are transmitted to the fixed control unit in a non-contact manner, and the data signals are output to display the information of temperature, pressure and the like in the system after being decoded by the fixed control unit. The transmission process of the monitoring signal is the same in principle and the opposite process compared with the transmission of the control voltage signal.
Specifically, the system control module compares the monitoring signal with a preset reference voltage by the receiving and decoding module, subtracts the reference voltage signal from the monitoring signal, outputs a monitoring return signal, transmits the monitoring return signal and the reference voltage signal to the fixed control unit through the monitoring return excitation coil, and performs error calibration by the parameter adjusting/data storage module according to the reference voltage signal received by the monitoring return signal receiving coil to obtain a calibrated reference voltage signal; the superposition module superposes the calibrated reference voltage signal to the monitoring return signal to obtain a first return signal; the signal modulation module carries out inverse proportion modulation on the first return signal to obtain a second return signal which is in inverse proportion to the rotating speed; the signal converter module performs proportional modulation on the second return signal according to the calibrated reference voltage signal to obtain a third return signal; and the control signal decoder module decodes the third return signal to restore the third return signal to output a monitoring signal.
The working modes of the invention are a switch control mode and a proportional control mode, and the difference of the two control modes is that the control signals are different according to the input instruction, under the switch control mode, the input is rectangular wave signal, the control signal decoder module decodes the voltage value of the corresponding selected channel according to the rectangular wave, for example, when the value of the decoded voltage signal is 0-5V, the first signal input channel is opened, when the value of the decoded voltage signal is 0-10V, the second signal input channel is opened, and so on, and a process of continuously changing at the time of the change of the voltage in the proportional control mode, a process of continuously rising or falling with respect to the reference voltage, for example, when the input command control signal is an angle signal of 0-60 degrees, the control signal decoder module outputs a continuous voltage signal; according to the relation between the input voltage and the reference voltage, the input voltage signal is restored in the follow-up execution unit;
the working process of the system under the two control modes is the same: the control signal decoder module separates the input command control signal and decodes the signal into a first control signal X1; the first control signal X1 is further sent to a signal converter module to convert the first control signal into a corresponding voltage signal, and the first control signal is modulated by a compensation reference voltage signal from a reference voltage generator to generate a second control voltage signal Va, the second control voltage signal Va is further sent to a rotating speed/voltage modulation module to modulate according to the value of the rotating speed signal and output a third control voltage signal Vav, the third control voltage signal Vav is further sent to a superposition module to be superposed with a reference voltage signal Vj sent by the reference voltage generator to generate a fourth control voltage signal Vsp, and further the voltage and the current required by the main excitation coil to generate a corresponding magnetic field are modulated according to the value of the fourth control voltage signal Vsp and a calibration power value of a follow-up execution unit and sent to the main excitation coil QL; further, the main exciting coil generates the magnetic field modulated in the above step.
And the follow-up execution unit compares a voltage signal XC from a receiving coil QS after entering the receiving decoding module with a preset reference voltage in the module, separates a signal value of a first control signal after addition and subtraction operation, and converts the signal value into a corresponding instruction control signal by a conversion circuit in the module for outputting. The system control module compares the instruction control signal with a feedback signal Fk of the execution device and accurately controls the working state of the execution device according to the comparison result. The command control signal is transmitted to the executive device completely and contactlessly, and the contactless control of the executive device is realized.
Specifically, as shown in fig. 4 and 5, in the switching control mode, when the input voltage is different from the reference voltage, the output voltage obtained at the receiving coil is the difference between the input voltage and the reference voltage, and the obtained output voltage and the reference voltage are both a stable fixed value, the operating principle of the switching control mode is as follows:
a fixed control unit: the switch control voltage signal is sent to the fixed control unit through the control voltage signal input port, a computer is arranged in the fixed control unit, an operation program is preset in the computer, the operation program processes the switch control voltage signal according to the process, and corresponding voltage is output at the main excitation coil end to generate an excitation magnetic field.
A follow-up execution unit: the receiving coil converts the magnetic field generated by the main excitation coil into electromotive force, and the electromotive force becomes a power supply source after rectification, voltage stabilization and energy storage, so that stable and continuous electric energy is provided for the normal work of each module of the follow-up execution unit. The output end of the receiving coil is provided with a voltage sampling port which is connected with a system control module, and the system control module compares the voltage signal with a preset reference voltage and decodes the voltage signal to control the corresponding output end to output an instruction control signal;
a parameter adjusting interface: because a small amount of tolerance exists in the gap between the main excitation coil and the receiving coil during installation, the actual reference voltage can be transmitted back to the fixed control unit through the connection between the control module of the follow-up execution unit system and the monitoring return system, and then the actual reference voltage is input into the reference voltage generator through the parameter adjusting port in the fixed control unit to calibrate the error of the reference voltage caused by the tolerance, and the other function of the parameter adjusting port is to write in the running program of the singlechip of the control module.
As shown in fig. 6 and 7, in the proportional control mode, the relationship between the input/output voltage of the coil and the rotation speed is a continuously variable voltage signal, and the output voltage obtained at the receiving coil is also a continuously variable voltage signal; the working principle of the proportional control mode is as follows:
fixing the main control unit: the proportional control voltage signal is a continuously adjustable voltage signal, the control voltage signal is sent to the fixed control unit through the control voltage signal input port, the fixed control unit is internally provided with a single chip microcomputer, an operation program is preset in the single chip microcomputer, the operation program processes the switch control voltage signal according to the rotating speed, and corresponding voltage is output at the main excitation coil end to generate an excitation magnetic field.
A follow-up execution unit: the receiving coil converts the magnetic field generated by the main excitation coil into electromotive force, and the electromotive force becomes a power supply source after rectification, voltage stabilization and energy storage, so that stable and continuous electric energy is provided for the normal work of each module of the follow-up execution unit. The output end of the receiving coil is provided with a voltage sampling port connected with a system control module, the system control module compares a voltage signal with a preset reference voltage and decodes the voltage signal to control a corresponding output end to output a proportional control command signal to drive a proportional executing device, the function of monitoring the feedback is to arrange a subsystem in the motion executing part, and the main function is to arrange the motion executing part such as: the data of temperature, pressure and the like are transmitted to the fixed control unit in a non-contact way, and the data signals are output to display the information of temperature, pressure and the like in the moving part after being decoded by the fixed control unit. The working principle is the same as the proportional control mode, but the process is opposite, and the signal is transmitted to the fixed control unit by the fixed follow-up execution unit. A parameter adjusting interface: because a small amount of tolerance exists in the gap between the main excitation coil and the receiving coil during installation, the actual reference voltage can be transmitted back to the fixed control unit through the connection between the control module of the follow-up execution unit system and the monitoring return system, and then the actual reference voltage is input into the reference voltage generator through the parameter adjusting port in the fixed control unit to calibrate the error of the reference voltage caused by the tolerance, and the other function of the parameter adjusting port is to write in the running program of the singlechip of the control module.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. The contactless electromagnetic control and execution system is characterized by comprising a fixed control unit and a follow-up execution unit;
the fixed control unit is used for converting the instruction control signal into a control voltage signal, and after a reference voltage is superposed on the control voltage signal, the control voltage signal superposed with the reference voltage is converted into an electromagnetic energy and electromagnetic signal through a main excitation coil of the fixed control unit, and the electromagnetic energy and electromagnetic signal are used for being transmitted to a receiving coil in the follow-up execution unit;
the follow-up execution unit is used for converting the electromagnetic energy into electric energy through the receiving coil, and the electric energy is used for supplying power to the follow-up execution unit; the follow-up execution unit is also used for separating the reference voltage signal from the control voltage signal from the electromagnetic signal so as to decode the control voltage signal into an instruction control signal, and an execution device in the follow-up execution unit completes a corresponding instruction according to the instruction control signal.
2. The contactless electromagnetic control and execution system according to claim 1, wherein the stationary control unit includes a computer main control module, the follow-up execution unit includes an electric energy conversion module and a control module,
the computer main control module is internally provided with an operation program, converts the instruction control signal into a control voltage signal according to the operation program and the reference rotating speed, and generates an excitation magnetic field in the main excitation coil according to the control voltage signal on which the reference voltage is superposed by superposing a reference voltage on the control voltage signal;
the receiving coil converts an excitation magnetic field generated by the main excitation coil into a voltage signal;
the electric energy conversion module converts the voltage signal into a power supply after rectification, voltage stabilization and energy storage, and supplies power to the control module;
the control module obtains a voltage signal from a voltage sampling port at the output end of the receiving coil, compares and decodes the voltage signal with a reference voltage preset in the control module, and controls the output end of the control module to output an instruction control signal.
3. The contactless electromagnetic control and execution system of claim 2, wherein the computer master module comprises: the device comprises a control signal decoder module, a signal converter module, a signal modulation module, a reference voltage generator, a superposition module and a power modulation module;
the reference voltage generator is used for generating a reference voltage;
the control signal decoder module is used for decoding the input instruction control signal according to the coding mode and outputting a first control signal;
the signal converter module performs proportional modulation on the reference voltage according to the signal value of the first control signal to obtain a second control voltage signal which is proportional to the first control signal;
the signal modulation module carries out compensation and correction on the signal value of the second control voltage signal according to the voltage value of the reference voltage, and carries out inverse proportion modulation on the compensated and corrected second control voltage signal according to the rotating speed value acquired from the rotating speed sensor to obtain a third control voltage signal in inverse proportion to the rotating speed;
the superposition module is used for carrying out addition operation on the third control voltage signal and the voltage value of the reference voltage to obtain a fourth control voltage signal;
and the power modulation module is used for modulating the signal value of the fourth control voltage signal and the calibration power of the follow-up execution unit to obtain the voltage and the current required by the corresponding magnetic field generated by the main excitation transmitting coil.
4. The contactless electromagnetic control and execution system of claim 2, wherein the control module comprises: a receiving decoding module and a system control module;
the receiving decoding module is used for comparing the control voltage signal received by the receiving coil with a preset reference voltage in the receiving decoding module, removing the reference voltage signal in the control voltage signal after addition and subtraction operation, and obtaining a corresponding instruction control signal after decoding conversion;
the system control module is used for comparing the instruction control signal with a feedback signal of an execution device in the follow-up execution unit and controlling the working state of the execution device according to a comparison result.
5. The contactless electromagnetic control and execution system of claim 3, wherein the stationary control unit further comprises a first power supply system, the first power supply system comprising a voltage regulation module and a power management module;
the voltage stabilizing module is used for stabilizing the voltage of an external power supply and providing a stable voltage for the power supply management module;
the power management module provides power for the control signal decoder module, the signal converter module, the signal modulation module, the reference voltage generator, the superposition module and the power modulation module.
6. The contactless electromagnetic control and execution system according to claim 5, wherein the power management module comprises a voltage boosting portion and a voltage dropping portion, the voltage boosting portion being used to provide high voltage power supply for the power modulation module, the reference voltage generator;
the voltage reduction part provides low-voltage power supply for the control signal decoder module, the signal converter module, the signal modulation module and the superposition module.
7. The contactless electromagnetic control and execution system according to claim 4, wherein the follow-up execution unit further includes a second power supply system, the second power supply system including a battery, a rectifying and voltage-stabilizing module, a power supply management module;
the rectification and voltage stabilization module is used for rectifying and stabilizing the received voltage and providing stable voltage for the power supply management module;
the power supply management module provides an auxiliary power supply for the control module of the follow-up execution unit;
the battery is used for providing an auxiliary power supply for the power supply management module.
8. The contactless electromagnetic control and execution system of claim 7, wherein the power supply management module comprises a voltage boosting unit, a voltage reducing unit, and a battery management unit, wherein the voltage boosting unit is used for providing high-voltage power supply for the system control module;
the voltage reduction unit provides low-voltage power supply for the receiving and decoding module;
the battery management unit is used for controlling the battery to be accessed into the second power supply system without clearance and supplying power to the second power supply system; the battery management unit performs periodic charge and discharge maintenance on the battery.
9. The contactless electromagnetic control and actuation system according to claim 2, wherein the stationary control unit further comprises a monitoring return signal receiving coil, the follow-up actuation unit further comprises a monitoring return excitation coil and a monitoring sensor, the control module collects the monitoring signal from the monitoring sensor, compares the monitoring signal with a preset reference voltage, subtracts the reference voltage signal from the monitoring signal, outputs a monitoring return signal, and transmits the monitoring return signal and the reference voltage signal to the stationary control unit through the monitoring return excitation coil;
and the computer main control module decodes the monitoring return signal, superposes the reference voltage on the monitoring return signal, modulates and restores the monitoring signal and outputs the monitoring signal.
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