CN103836079A - DSP and FPGA based energy storage flywheel magnetic bearing control system and method - Google Patents
DSP and FPGA based energy storage flywheel magnetic bearing control system and method Download PDFInfo
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- CN103836079A CN103836079A CN201210480176.2A CN201210480176A CN103836079A CN 103836079 A CN103836079 A CN 103836079A CN 201210480176 A CN201210480176 A CN 201210480176A CN 103836079 A CN103836079 A CN 103836079A
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Abstract
The invention relates to a DSP and FPGA based energy storage flywheel magnetic bearing control system and method. The system includes a DSP algorithm module, an FPGA drive control module, a magnetic bearing power module, a magnetic bearing signal monitoring module, a magnetic bearing signal conditioning module, an A / D conversion module, an LCD display module, a keyboard and a host computer communication module. The DSP algorithm module is in electric signal connection with the FPGA drive control module, the magnetic bearing power module is in electric signal connection to a PMW generator of the FPGA drive control module. PWM is used to complete current level control on the flywheel magnetic bearing coil, so as to complete the real-time control of the flywheel operation; the magnetic bearing signal monitoring module in electric signal connection realizes monitoring of a displacement signal of a flywheel magnetic bearing rotor and a current line signal of the magnetic bearing coil. The invention has the advantages of simple circuit, stable system and high control precision.
Description
Technical field
The present invention relates to a kind of energy accumulation flywheel magnetic bearing control system and method based on DSP and FPGA.
Background technique
Accumulated energy flywheel is a kind of mechanical energy storing device, has high efficiency, high energy storage density, environmental protection, and long service life, discharges and recharges the advantages such as rapid, is the key equipment in new energy, is the focus of International Power electronics research.The control system of accumulated energy flywheel mainly adopts single microprocessor chip (for example dsp chip) collocation control drive circuit to control at present.This kind of control program great advantage is that control system circuit is fairly simple, but this scheme disadvantage automatic controlling level that is system is not high and cannot be to the operation conditions on-line real time monitoring of magnetic bearing.
Summary of the invention
Based on above shortcoming, the present invention discloses a kind of energy accumulation flywheel magnetic bearing control system and method based on DSP and FPGA, be not mainly used to solve the employing list micro-chip processor control system automatic controlling level of accumulated energy flywheel high and cannot be to problems such as operation conditions on-line real time monitorings, simultaneously can also be to the operation conditions Real-Time Monitoring of flywheel.Native system, for energy accumulation flywheel magnetic bearing system is carried out to stable suspersion control and real time execution condition monitoring, is specially adapted to the occasion such as highi degree of accuracy, high automation control.
Technical solution of the present invention is: a kind of energy accumulation flywheel magnetic bearing control system based on DSP and FPGA, comprise DSP algoritic module (2), FPGA drive control module (1), magnetic bearing power model (7), magnetic bearing signal monitoring module (5), magnetic bearing signal condition module (4), A/D modular converter (3), LCD display modular (8), keyboard (11), upper-position unit communication module (9), FPGA drive control module (1) comprises A/D controller module (12), lcd controller (13), PWM generator (14), SCI communication module (15), two-port RAM (16) and KBC (17), DSP algoritic module (2) electrical signal connects FPGA drive control module (1), magnetic bearing power model (7) electrical signal connects the PMW generator (14) of FPGA drive control module (1), keyboard (11) electrical signal connects the KBC of FPGA drive control module (1), upper-position unit communication module (9) electrical signal connects the SCI communication controller (15) of FPGA drive control module (1), LCD display modular (8) electrical signal connects the lcd controller (13) of FPGA drive control module (1), magnetic bearing signal monitoring module (5) electrical signal connects magnetic bearing signal condition module (4), magnetic bearing signal condition module (4) electrical signal connects A/D modular converter (3), A/D modular converter (3) electrical signal connects the A/D sampling controller (12) of FPGA drive control module (1), magnetic bearing power model (7) electrical signal connects flywheel magnetic bearing, completing flywheel magnetic bearing coil current size by PWM controls, complete the real-time control to flywheel operation, magnetic bearing signal monitoring module (5) electrical signal connects the monitoring to flywheel magnetic bearing rotor displacement signal and magnetic bearing coil current line signal.
The present invention also has following feature:
1, described DSP algoritic module (2) adopts BP neuron network-pid algorithm to complete the stable suspersion control to magnetic bearing, adopts fft algorithm to complete the real-time monitoring to magnetic bearing operation conditions.
2, described DSP algoritic module (2) adopts TMS320F28335, and FPGA drive control module (1) adopts EP2C8Q208C8.
3, a kind of energy accumulation flywheel magnetic bearing controlling method based on DSP and FPGA, as follows: in magnetic bearing signal monitoring module (5), current sensor and current vortex sensor are caught respectively magnetic bearing coil current signal, magnetic bearing rotor displacement signal, the signal that signal condition module (4) is caught magnetic bearing signal monitoring module (5) carries out filtering and amplification, signal condition in the scope of 0-2.5V, FPGA drive control module (1) is controlled the collection of A/D modular converter (3) to conditioning after-current signal and displacement signal by A/D sampling controller (12), and by gather after deposit data in the built-in dual port RAM (16) of FPGA, DSP algoritic module (2) is reading out data from the built-in dual port RAM (16) of FPGA drive control module (1), generate magnetic bearings control signal and magnetic bearing Real-Time Monitoring signal by BP neuron-pid algorithm (18) and fft algorithm (19) processing data, after processing, data are stored in again in the middle built-in dual port RAM (16) of FPGA drive control module (1), FPGA drive control module (1) reads these information, drive on the one hand lcd controller (13) at the upper spectrum signal that shows of LCD display modular (8), another side drives PWM generator to generate PWM ripple, control flywheel body (6) by magnetic bearing power model (7).
The present invention's advantage is compared with prior art: the present invention has utilized dsp chip and fpga chip to build energy accumulation flywheel magnetic bearing automatic control system, has following outstanding feature compared with existing energy accumulation flywheel magnetic bearing control system:
(1) more existing energy accumulation flywheel magnetic bearing control system adopts the numerical control system of two core processors collocation peripheral circuits, and the present invention has advantages of modular design: circuit is simple, system stability, control accuracy are high.
(2) more existing energy accumulation flywheel magnetic bearing control system adopts the numerical control system of two core processor collocation peripheral circuits, the mass data computing that system needs is completed by floating type chip DSP, make system control in real time and Real-Time Monitoring ability stronger, improved the overall accuracy of system.
(3) more existing energy accumulation flywheel magnetic bearing control system adopts the numerical control system of two core processor collocation peripheral circuits, system adopts fpga chip to design the Drive and Control Circuit except data operation, make circuit design more flexible, and facilitate the optimization and upgrading again of system.
Brief description of the drawings
Fig. 1 is structure composition frame chart of the present invention;
Fig. 2 is system program flow chart of the present invention;
Fig. 3 is magnetic bearing BP neuron network-pid algorithm block diagram of the present invention;
Fig. 4 is two-port RAM schematic diagram of the present invention;
Fig. 5 is pattern conversion and control schematic diagram of the present invention.
Embodiment
Below in conjunction with Figure of description, the invention will be further described:
Embodiment 1:
As shown in Figure 1, the present invention includes FPGA drive control module 1, DSP algoritic module 2, A/D modular converter 3, magnetic bearing signal condition module 4, magnetic bearing signal detection module 5, flywheel body 6, magnetic bearing power model 7, LCD demonstration 8, communication interface 9, upper-position unit 10, keyboard 11, wherein FPGA drive control module 1 comprises A/D controller module 12, lcd controller 13, PWM generator 14, SCI communication module 15, two-port RAM 16, KBC 17, DSP algoritic module 2 comprises BP neuron network-pid algorithm 18, fft algorithm module 19.In magnetic bearing signal monitoring module 5, current sensor and current vortex sensor are caught respectively magnetic bearing coil current signal, magnetic bearing rotor displacement signal, the signal that signal condition module 4 is caught magnetic bearing signal monitoring module 5 carries out filtering and amplification, signal condition in the scope of 0-2.5V, FPGA drive control module 1 is controlled the collection of A/D modular converter 3 to conditioning after-current signal and displacement signal by A/D sampling controller 12, and by gather after deposit data in the built-in dual port RAM16 of FPGA, DSP algoritic module 2 is reading out data from the built-in dual port RAM16 of FPGA drive control module 1, generate magnetic bearings control signal and magnetic bearing Real-Time Monitoring signal by BP neuron-pid algorithm 18 and fft algorithm 19 processing data, after processing, data are stored in again in FPGA drive control module 1 in built-in dual port RAM16, FPGA drive control module 1 reads these information, drive lcd controller 13 to show spectrum signal on LCD display modular 8 on the one hand, another side drives PWM generator to generate PWM ripple, control flywheel body 6 by magnetic bearing power model 7.
As shown in Figure 2, for control algorithm flow chart of the present invention, the control parameter of system power-up initializing system realizes at magnetic bearing at static stable suspersion in neutral position, if stable suspersion can not adjusted online parameter and realize stable suspersion in neutral position in neutral position, when driving rotor, motor rotates, by A/D sample magnetic bearing coil current size and the rotor displacement information of driver Real-time Collection magnetic bearing signal detection module feedback, BP neuron-pid algorithm is processed formation PWM ripple to displacement information and current information, driving magnetic bearing power model to realize rotor dynamic stability suspends, the displacement information that feeds back on the other hand rotor carries out frequency analysis by fft algorithm, form rotor real time execution spectrogram, on LCD, show.
As shown in Figure 3, be BP neuron-pid algorithm schematic diagram of the present invention, BP neuron adopts three-level network structure, comprises input layer, hidden layer and output layer; Pid algorithm adopts incomplete differential pid algorithm.
As shown in Figure 4, be system DSP of the present invention and FPGA connection diagram, DSP is connected the embedded two-port RAM of employing FPGA with FPGA.DSP28335 has the external memory interface (XINTF) carrying, and can facilitate the storage such as expansion RAM, FLASH; FPGA has very abundant logic element, can conveniently build the storage unit such as RAM, ROM and FIFO.The present invention we adopt Verilog language to build two-port RAM storage, is mapped to the Zone0 region of DSP.The communication mechanism of FPGA and DSP is: the Zone0 signal of DSP is connected with the XCSZ0 of FPGA and the CS of RAM; XWE0 is connected with the WE of RAM; XRE0 is connected with the RE of RAM; The least-significant byte address wire of DSP is connected with the 8 bit address lines of RAM; The low 16 bit address lines of DSP are connected with 16 position datawires of RAM.
As shown in Figure 5, be system analog-to-digital conversion schematic diagram of the present invention, analog-to-digital conversion adopts time sharing sampling technology, completes the collection of 10 road signals with a slice A/D chip; MUX is 16 to select 1 chip SN74150, and A/D conversion chip is 16, the AD9467 of 250MSPS, and FPGA completes the conversion of 10 signals by A/D chip by controlling the timesharing of SN74150 selector, and by the deposit data of conversion in FIFO.
Principle of the present invention is: the present invention adopts dsp chip and fpga chip to realize automatic control and the on-line real time monitoring of accumulated energy flywheel, and the demonstration of collection, the control of magnetic bearing coil current and the spectrum signal of 10 circuit-switched data is mainly completed by fpga chip; Real-time control processing and the main dsp chip of frequency analysis to image data complete.Wherein FPGA drives control A/D module to complete the collection to magnetic bearing rotor displacement signal and magnetic bearing coil current signal; DSP carries out FFT computing formation spectrum information on the one hand to the rotor displacement signal gathering and coil current signal, and the opposing party passes through BP neuron network-pid algorithm to the control of magnetic bearing stable suspersion.
The invention provides the analog input interface of energy accumulation flywheel magnetic bearing automatic control system to magnetic bearing rotor displacement signal and the monitoring of magnetic bearing coil current, the output interface to the control of magnetic bearing coil current through power amplifier module is provided.On the one hand, by the displacement signal of five degrees of freedom of displacement transducer monitoring magnetic bearing rotor and the current signal in the magnetic bearing coil of current sensor detection in magnetic bearing signal monitoring module, FPGA is converted to digital quantity by AD sampling control algorithm; The magnetic bearing that DSP generates is controlled in real time data and is produced algoritic module generation PWM ripple by the PWM of FPGA, and PWM ripple modulation signal drives magnetic bearing device for power switching to realize the stable suspersion of magnetic bearing flywheel rotor.
The present invention can be used as a kind of general energy accumulation flywheel magnetic bearing automatic control system platform, and enough hardware resources and the operation interface of hommization are provided, and engineering staff is the stable suspersion of real magnetic bearing very easily.
Claims (4)
1. the energy accumulation flywheel magnetic bearing control system based on DSP and FPGA, comprise DSP algoritic module (2), FPGA drive control module (1), magnetic bearing power model (7), magnetic bearing signal monitoring module (5), magnetic bearing signal condition module (4), A/D modular converter (3), LCD display modular (8), keyboard (11), upper-position unit communication module (9), FPGA drive control module (1) comprises A/D controller module (12), lcd controller (13), PWM generator (14), SCI communication module (15), two-port RAM (16) and KBC (17), it is characterized in that: DSP algoritic module (2) electrical signal connects FPGA drive control module (1), magnetic bearing power model (7) electrical signal connects the PMW generator (14) of FPGA drive control module (1), keyboard (11) electrical signal connects the KBC of FPGA drive control module (1), upper-position unit communication module (9) electrical signal connects the SCI communication controller (15) of FPGA drive control module (1), LCD display modular (8) electrical signal connects the lcd controller (13) of FPGA drive control module (1), magnetic bearing signal monitoring module (5) electrical signal connects magnetic bearing signal condition module (4), magnetic bearing signal condition module (4) electrical signal connects A/D modular converter (3), A/D modular converter (3) electrical signal connects the A/D sampling controller (12) of FPGA drive control module (1), magnetic bearing power model (7) electrical signal connects flywheel magnetic bearing, completing flywheel magnetic bearing coil current size by PWM controls, complete the real-time control to flywheel operation, magnetic bearing signal monitoring module (5) electrical signal connects the monitoring to flywheel magnetic bearing rotor displacement signal and magnetic bearing coil current line signal.
2. a kind of energy accumulation flywheel magnetic bearing control system based on DSP and FPGA according to claim 1, it is characterized in that: described DSP algoritic module (2) adopts BP neuron network-pid algorithm to complete the stable suspersion control to magnetic bearing, adopt fft algorithm to complete the real-time monitoring to magnetic bearing operation conditions.
3. a kind of energy accumulation flywheel magnetic bearing control system based on DSP and FPGA according to claim 1, it is characterized in that: described DSP algoritic module (2) sheet adopts TMS320F28335, FPGA drive control module (1) adopts EP2C8Q208C8.
4. an a kind of energy accumulation flywheel magnetic bearing controlling method based on DSP and FPGA that uses a kind of energy accumulation flywheel magnetic bearing control system based on DSP and FPGA as claimed in claim 1 to draw, it is characterized in that, method is: in magnetic bearing signal monitoring module (5), current sensor and current vortex sensor are caught respectively magnetic bearing coil current signal, magnetic bearing rotor displacement signal, the signal that signal condition module (4) is caught magnetic bearing signal monitoring module (5) carries out filtering and amplification, signal condition in the scope of 0-2.5V, FPGA drive control module (1) is controlled the collection of A/D modular converter (3) to conditioning after-current signal and displacement signal by A/D sampling controller (12), and by gather after deposit data in the built-in dual port RAM (16) of FPGA, DSP algoritic module (2) is reading out data from the built-in dual port RAM (16) of FPGA drive control module (1), generate magnetic bearings control signal and magnetic bearing Real-Time Monitoring signal by BP neuron-pid algorithm (18) and fft algorithm (19) processing data, after processing, data are stored in again in the middle built-in dual port RAM (16) of FPGA drive control module (1), FPGA drive control module (1) reads these information, drive on the one hand lcd controller (13) at the upper spectrum signal that shows of LCD display modular (8), another side drives PWM generator to generate PWM ripple, control flywheel body (6) by magnetic bearing power model (7).
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105333008A (en) * | 2015-11-20 | 2016-02-17 | 珠海格力节能环保制冷技术研究中心有限公司 | Monitoring method, device and system for magnetic suspension bearing control system |
| CN109039137A (en) * | 2018-08-18 | 2018-12-18 | 成都为蓝新能源有限公司 | A kind of two-way inverter circuit system for reducing power consumption and promoting transfer efficiency |
| CN109185337A (en) * | 2018-09-27 | 2019-01-11 | 华中科技大学 | A kind of real-time control system and motorized spindle supported with AMB system of motorized spindle supported with AMB |
| CN113790212A (en) * | 2021-09-14 | 2021-12-14 | 北京泓慧国际能源技术发展有限公司 | Control system and method for flywheel magnetic bearing |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105333008A (en) * | 2015-11-20 | 2016-02-17 | 珠海格力节能环保制冷技术研究中心有限公司 | Monitoring method, device and system for magnetic suspension bearing control system |
| CN109039137A (en) * | 2018-08-18 | 2018-12-18 | 成都为蓝新能源有限公司 | A kind of two-way inverter circuit system for reducing power consumption and promoting transfer efficiency |
| CN109185337A (en) * | 2018-09-27 | 2019-01-11 | 华中科技大学 | A kind of real-time control system and motorized spindle supported with AMB system of motorized spindle supported with AMB |
| CN113790212A (en) * | 2021-09-14 | 2021-12-14 | 北京泓慧国际能源技术发展有限公司 | Control system and method for flywheel magnetic bearing |
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