Mechatronics Flashcards
7 cards from real SACA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Mechatronics flashcards as text
A technician measures excessive vibration in a rotating mechatronic assembly. Which diagnostic technique identifies the dominant frequency components causing the vibration?
Answer: Fast Fourier Transform (FFT) analysis
FFT decomposes a time-domain vibration signal into its frequency components, allowing identification of the root cause such as imbalance or misalignment.
In a Programmable Logic Controller (PLC) scan cycle, what is the correct order of operations?
Answer: Read inputs → Execute program → Write outputs
A standard PLC scan reads all input states first, then executes the ladder logic program, and finally writes the computed output states to output modules.
Which sensor technology uses the piezoelectric effect to measure dynamic force or acceleration?
Answer: Piezoelectric accelerometer
Piezoelectric accelerometers generate a charge proportional to applied acceleration by exploiting the piezoelectric properties of quartz or ceramic crystals.
In a hydraulic mechatronic system, what is the role of a servo valve?
Answer: To electrically control fluid flow direction and rate to a hydraulic actuator
A servo valve receives an electrical command and precisely meters hydraulic fluid flow to an actuator, enabling high-force closed-loop position or force control.
What is the purpose of a watchdog timer in an embedded mechatronic controller?
Answer: To reset the processor if the software fails to service it within a defined interval, preventing system lockup
A watchdog timer detects software faults by requiring periodic resets from the main program loop; if the software hangs, the timer expires and triggers a system reset.
Which bus protocol is widely used for high-speed, real-time communication between mechatronic motion control devices such as drives and I/O modules?
Answer: EtherCAT
EtherCAT is an industrial Ethernet protocol designed for deterministic, sub-millisecond cycle times, making it ideal for synchronized multi-axis motion control.
In mechatronics, what does 'system integration' specifically refer to?
Answer: The process of combining mechanical, electrical, and computational subsystems into a unified, co-designed product
System integration in mechatronics is the concurrent engineering approach that unifies mechanical, electronic, and software components so they function as an optimal whole.