Intelligent controller for electric eddy current retarder
A technology of eddy current retarder and intelligent controller, which is applied in the direction of controlling electromechanical brakes, control systems, electric braking systems, etc., can solve the problems of unfavorable power drive devices for long-term use and large current change rates of power devices, etc., to achieve Effects of rapid response and improved reliability
Active Publication Date: 2012-07-18
上海邦芯物联网科技有限公司
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Problems solved by technology
[0003] At present, the controllers for eddy current retarders all adopt the step-by-step control method, which makes the current change rate flowing through the power device during braking relatively large, which is not conducive to the long-term use of the power drive device.
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[0030] The input circuit of the manual rotary coding switch includes a rotary coding switch, the serial number of which is produced by piher company is CI11-CT-V1Y22-LFACF, and its pin A-E function diagram is as follows figure 2shown. Pin E of CI11-CT-V1Y22-LFACF is grounded and connected to pin D through the first capacitor C1. Pin D is connected to the cathode of the first optocoupler IC1 light-emitting diode, and the anode of the first optocoupler IC1 light-emitting diode passes through the first resistor R1 is connected to the +5V power supply, and grounded through the second capacitor C2, the emitter of the receiving transistor of the first optocoupler IC1 is grounded, and the collector is connected to the 5V power supply through the second resistor R2, and connected to 1 of the integrated comparator 74LS07-1 pin, the collector and emitter of the receiving triode of the first optocoupler IC1 are connected through the third capacitor C3, the pin 2 of the integrated compar...
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The invention provides an intelligent controller for an electric eddy current retarder. The intelligent controller is characterized in that a manual rotary encoding switch is connected with a microprocessor through a first photoelectric isolation circuit, vehicle speed signals and antilock braking system (ABS) signals are connected with the microprocessor through a second photoelectric isolation circuit, brake pedal signals are connected with the microprocessor through a first analog signal magnification and comparison circuit, the output end of the microprocessor is connected with the input end of a retarder coil through a photoelectric isolation driving power circuit, the driving power device current signals output by the photoelectric isolation driving power circuit are connected with the microprocessor through a second analog signal magnification and comparison circuit, and retarder coil temperature signals and driving power device temperature signals are connected with the microprocessor through a third analog signal magnification and comparison circuit. The intelligent controller has the advantages that the electrodeless regulation of current passing through a retarder coil can be realized through selecting an encoding switch; integrated double-metal-oxide-semiconductor-field-effect-transistor (MOSFET) power chips are selected, and the system reliability is improved; and a hardware protection circuit can make fast response to system abnormities.
Description
technical field [0001] The invention relates to the field of eddy current control, in particular to a novel intelligent controller for an eddy current retarder. Background technique [0002] In the existing large vehicles (such as passenger cars, buses and trucks), eddy current retarders have been gradually added to improve the safety braking force of the vehicle during driving. The control system of the eddy current retarder is mainly divided into two parts: one is the control part composed of the main control processor and its peripheral circuits; the other part is the mechanical part composed of the excitation coil and the corresponding mechanical structure. [0003] At present, the controllers for eddy current retarders all adopt the step-by-step control mode, which makes the change rate of the current flowing through the power device during braking relatively large, which is not conducive to the long-term use of the power drive device. Contents of the invention [00...
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IPC IPC(8): H02P15/00B60L7/28
CPCY02T10/642Y02T10/64
Inventor 高扬
Owner 上海邦芯物联网科技有限公司