Embedded motor and load power level simulation system

Abstract

The invention discloses an embedded motor and load power level simulation system which comprises a real-time resolving part and an electronic load part, wherein the real-time resolving part comprises a field programmable gate array (FPGA) and a digital signal processor (DSP), and the electronic load part comprises a controllable current source and a voltage sampling resistor. The voltage sampling resistor samples the pulse width modulation (PWM) voltage output by a driving controller of a component under test, sends the voltage to the FPGA through an analog to digital converter (ADC) to conduct current resolving, sends all the current values of the motor to the DSP, and the current values are sent to the controllable current source to produce three-phase winding forward and reverse currents and the three-phase winding forward and reverse currents are output to the driving controller of the component under test to conduct the load power simulation. The DSP completes the calculation of motor rotor position and counter electromotive force according to the input data, sends back the results to the FPGA, and sends preset parameter winding resistance and winding inductance to the FPGA. The FPGA obtains HALL signals and rotary transformer signals through calculation, and inputs the HALL signals and the rotary transformer signals to the driving controller of the component under test to simulate the motor signals.

Description

technical field [0001] The invention relates to an embedded motor and load power level simulation system, belonging to the technical field of power level simulation closed-loop testing of motor control drivers. Background technique [0002] With the rapid development of aerospace technology, planetary exploration is becoming a research hotspot. my country's lunar exploration project has developed a lunar surface patrol device to complete the lunar surface inspection and detection mission. The patroller controls and drives the moving mechanism through the control drive components. In order to ensure the reliable operation of the control drive components in orbit, it is necessary to fully test all aspects of its functional performance, especially when the load and parameters change, the response characteristics of the control drive components And the ability to judge and deal with faults. Due to the large differences between the lunar surface gravity and temperature environm...

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Problems solved by technology

However, there are no published articles and related patents on the design of power-level analog systems.

[0007] The first method can meet the demand for closed-loop testing of product electrical performance, but the use of weights and other devices cannot realize the dynamic simulation of the load, and the real moving mechanism is used to simulate the dynamic simulation of driving on the simulated moon field, and the load change process is difficult to measure and control. , which is not conducive to the evaluation and verification of driving performance

At the same time, real motors cannot satisfy the simulation of motor parameter changes

Additionally, fault simulation with real motors is often destructive to the motor and detrimental to fault control

[0008] The second method, using signal-level simulation, can realize the simulation of motor parameters, HALL, and resolver signals. It has high precision and is flexible and controllable, but it cannot simulate the characteristics of motor load changes and cannot meet the driving performance test requirements for control drive circuits.

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