Test system and method for testing electromechanical components

摘要

Method and system that produce requisite drive signals to fully exercise and test electromechanical elements of a liquid rocket stage including solenoid valve drives, DC motor drives and actuator drive signals. The electrical driver tester includes a signal processor, power driver circuits, and A/D and D/A circuits to monitor and control the drive circuitry. Drive current is monitored and a signal proportional to the current is produced for the purpose of analyzing current profiles as part of the test regimen for the device under test. Actuator speed and positioning are controlled in real time with a tailored lead lag control algorithm implemented with digital signal processor hardware.

主权项

1. A method for generating drive signals to test an assembly including a valve, an actuator and a switch motor, comprising:
controlling a valve driver, an actuator driver and a motor driver from a processor to cause testing drive signals to be directed to the valve, actuator and motor, respectively; configuring the processor to sense and monitor drive voltage and current of the valve driver, actuator driver and motor driver; receiving feedback signals at the processor in response to the operation of the actuator based on the testing signals directed to the actuator via the actuator driver; and determining, based on the feedback signals, commands at the processor to cause additional testing signals to be directed to the valve, actuator and motor via the valve driver, actuator driver and motor driver, whereby the drive voltage and current and feedback signals are analyzed to assess operational characteristics of the assembly.