CN2471612Y

CN2471612Y - Fuzzy controller for electric vehicle

Info

Publication number: CN2471612Y
Application number: CN01214493U
Authority: CN
Inventors: 万沛霖; 张志远; 李山
Original assignee: Chongqing Institute of Technology
Current assignee: Chongqing Institute of Technology
Priority date: 2001-03-15
Filing date: 2001-03-15
Publication date: 2002-01-16
Anticipated expiration: 2011-03-15

Abstract

The utility model relates to a fuzzy controller for electric vehicles, which is characterized in that the controller comprises a motor current feedback signal input end and a given voltage signal input end connected with the multi-channel converting input port of an A/D converter, a motor speed pulse processing port connected with the count input end of a counter of a single-chip microcomputer chip, and a switch signal input end for power state connected with the I/O port of the single-chip microcomputer chip; the output end of a D/A converter is connected with a operational amplifier circuit and outputs the converted monopole simulative control voltage signal. The utility model controls vehicles according to the running state and power state, thus ensures the best operation of the vehicles.

Description

The electronlmobil fuzzy controller

The utility model relates to the driven by power control setup of electronlmobil, particularly a kind of electronlmobil fuzzy controller.

Electronlmobil is to be the automobile of power with the battery, has the advantage of low noise, zero-emission, the comprehensive application energy, has become the important channel that current auto-industry solve problems such as the energy and environmental protection.

Because battery-driven car is the energy with the storage battery, is power with the motor, battery tension volt value and discharge rate size have specific restrictive function to the electrical motor drive ability; Driving cycle requires electrical motor to have the dynamic characteristic of wide region simultaneously.Power when electrical motor starts to high speed from low speed is the several times of stablizing road horsepower at a high speed, promptly requires the setting range of speed, torque, power wide.Therefore, battery-driven car must have special driven by power control mechanism, and it is the heart of battery-driven car, and its development must be considered above-mentioned specific (special) requirements.

Electronlmobil of the prior art adopts analog controller with conventional linear control method usually, as the PID control method.But battery-driven car is multivariate input, and is not only relevant, simultaneously relevant with the current energy storage situation of storage battery with the speed of a motor vehicle, road conditions, environment as the foot-operated given signal of accelerator card; Because the requirement of the rideability of electronlmobil, and the rule of its rideability, controlled object be to describe with definite math modeling, and simultaneously, electrical motor itself is a multivariate input, nonlinear object.Therefore often be difficult to satisfy the rideability requirement of electronlmobil with the PID regulating control of conventional linear control method.

The purpose of this utility model provides a kind of can control according to running state of the vehicle, energy situation, can make vehicle obtain the electronlmobil fuzzy controller of optimal operational condition.

Above-mentioned purpose of the present utility model is to realize by such technical scheme, be a kind of electronlmobil fuzzy controller, comprise one chip microcomputer chip, its peripheral circuit A/D, D/A converter, encoded control chip, logic controller and computing amplification chip; It is characterized in that: controller also comprise with the multipath conversion input port bonded assembly of A/D converter give determining voltage signal input end and motor current feedback signal input end, with the counting input end bonded assembly motor speed count pulse input end of one chip microcomputer Chip counter and with one chip microcomputer chip I/O mouth bonded assembly energy state on-off signal input end; The data exchange mouth of the data output end of described A/D converter, encoded control chip, the quantitative data input mouth of D/A converter pass through the I/O mouth of data bus order sheet chip of micro-computer; The input end of logic controller is connected with the control signal output ends of one chip microcomputer chip, and its mouth is connected with the control end of A/D, D/A converter respectively, and the control divide by four circuit is to A/D converter input clock control signal; D/A converter is exported the termination operational amplification circuit and the control voltage signal that the unipolarity of conversion is simulated is exported.

Said structure of the present utility model provides an embodiment by accompanying drawing and further specifies.

Accompanying drawing is schematic circuit diagram of the present utility model.

Referring to accompanying drawing: in the present embodiment, the fuzzy controller core is that its model of one chip microcomputer chip is 89C52, has microprocessor CPU, program store EPROM, data memory RAM, input, delivery port I/O, timer, counting machine, interruption and special function register, serial communication interface.The peripheral circuit A/D of 89C52 chip, D/A converter can adopt model to be respectively the chip of ADC0809, DAC0832, the model that the encoded control chip of programmable logic operation adopts is that 74HC373, divide by four circuit adopt two d type flip flops that model is 74HC74; It is the chip of GAL16V8 that logic controller adopts model.In the embodiment that accompanying drawing provides, given signal is by the IN-0 passage input of A/D converter ADC0809, and current feedback signal is by the input of IN-1 passage, and tach signal is sent into the t1 port numeration of micro controller system after frequency multiplication, and the counter value in the unit time is rotating speed.After micro controller system is adopted data, obtain output data through the control algorithm computing and deliver to D/A converter DAC0832 and become analog quantity, export through op amp conditioning back.Brake signal is handled with the interrupt mode input by the INT1 port of micro controller system, and micro controller system makes controller be output as zero immediately when brake signal, guarantees safety.Logic controller GAL16V8 is responsible for the address assignment of A/D and D/A chip and the generation of control logic; 74HC373 is used for latching the low order address of bus; The divide by four circuit of two 74HC74 compositions becomes the pulse supply ADC0809 of 500KHz as clock signal with the ale signal of 2MHz; Watchdog chip X25045 is responsible for the reliability of micro controller system, finishes regularly zero clearing by it, and when program fleet, when crashing, X25045 can reset controller.

The related parameter that has of the input end of controller is:

1), meets the A/D of controller through the given direct current signal 0～5V of conversion chaufeur;

2) operating control signal (emergent stop signal): on-off signal, by the INT1 pin access of controller;

3) speed feedback signal of electrical motor is the impulse singla of 0～256 frequency multiplication, by the t1 port numeration of controller;

4) motor current feedback signal direct current signal 0～10V is by the A/D access of controller;

5) energy situation signal: the three way switch signal of 8 kinds of power supply statuss of expression, the pin of the I/O interface by controller inserts;

The output of controller is: dc control signal 0～10V, and the D/A by controller converts direct current signal to, and through op amp output.

Because this controller is an intelligent controller, just can change controlled variable easily by modify instruction, realize torque, speed, the different master mode of power, to satisfy different load performance needs.

Claims

1, a kind of electronlmobil fuzzy controller comprises one chip microcomputer chip, its peripheral circuit A/D, D/A converter, encoded control chip, logic controller and computing amplification chip; It is characterized in that: controller also comprise with the input port bonded assembly of A/D converter give determining voltage signal input end and motor current feedback signal input end, with the counting input end bonded assembly motor speed count pulse input end of one chip microcomputer Chip counter and with one chip microcomputer chip I/O mouth bonded assembly energy state on-off signal input end; The data exchange mouth of the data output end of described A/D converter, encoded control chip, the quantitative data input mouth of D/A converter pass through the I/O mouth of data bus order sheet chip of micro-computer; The input end of logic controller is connected with the control signal output ends of one chip microcomputer chip, and its mouth is connected with the control end of A/D, D/A converter respectively, and the control divide by four circuit is to A/D converter input clock control signal; D/A converter is exported the termination operational amplification circuit and the control voltage signal that the unipolarity of conversion is simulated is exported.