MECH&AE 171A
Introduction to Feedback and Control Systems: Dynamic Systems Control I
Lecture and discussion.
Spring 2027: 1 lecture and 1 discussion. Nothing here is open. The oldest of these readings was about 2 months ago.
Grades
3.09
Average grade awarded in MECH&AE 171A. Not a student rating: this is what the grades were.
In the A range
41%
of the 1,153 letter grades
D, F or W
6.6%
of every letter grade awarded, plus withdrawals
Taken pass/no pass
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the registrar has this letter grade only this term
The registrar's own records: 1,153 grades over 17 terms, Fall 2021 to Fall 2025. Every instructor is pooled here.
What is inside that record
4 of those terms are summer sessions, and summer sessions are counted here.
The table below splits them, and term averages across those 17 terms ran 2.45 to 3.54.
Historical grades for all professors, across recorded terms. The course summary above includes all professors.
- A+ 85 · 7.4%
- A 253 · 21.9%
- A- 138 · 12.0%
- B+ 130 · 11.3%
- B 192 · 16.7%
- B- 84 · 7.3%
- C+ 70 · 6.1%
- C 92 · 8.0%
- C- 33 · 2.9%
- D+ 27 · 2.3%
- D 22 · 1.9%
- D- 14 · 1.2%
- F 13 · 1.1%
- I 6 of 1,159
Percentages are of the 1,153 letter grades. Grey bars are non-letter outcomes: incompletes (I).
How the non-letter outcomes are counted
They are excluded from the GPA entirely rather than scored, because counting a P as a 4.0 would be a fabrication.
By instructor
| Instructor | Predicted GPA | Raw | n | Terms | A range | Workload | Spring 2027 |
|---|---|---|---|---|---|---|---|
| IWASAKI, TETSUYA reviews ↗ | 3.10 | 3.10 | 424 | 5 | 37% | average | not teaching it |
| LOPEZ, BRETT THOMAS reviews ↗ | 3.15 | 3.15 | 340 | 4 | 45% | light | not teaching it |
| FRANCO, ELISA reviews ↗ | 2.95 | 2.94 | 217 | 3 | 40% | light | not teaching it |
| KIM, DENNIS reviews ↗ | 2.94 | 2.91 | 86 | 2 | 35% | - | not teaching it |
| SEPULVEDA, ABDON reviews ↗ | 3.38 | 3.54 | 30 | 1 | 63% | - | not teaching it |
| OSMANOVIC, DINO reviews ↗ | 3.11 | 3.12 | 30 | 1 | 43% | - | not teaching it |
| SEPULVEDA, ABDON EDUARDO reviews ↗ | 3.24 | 3.33 | 26 | 1 | 58% | - | not teaching it |
Why Predicted is not the Raw average
“Predicted” is shrunk toward the course average, which is itself shrunk toward the department, so an instructor with a handful of students sits near the course mean rather than topping the list.
Grade records describe outcomes. For what a course is like to take, read student reviews written on dibs below or follow the separate external review link.
Workload and assignments
Reported assignments across instructors and terms. This term's syllabus may differ.
What the work looks like
- 2 exams, 10 mentions in past reviews
- Quizzes mentioned, no number given, 1 mention in past reviews
- 8 problem sets, 8 mentions in past reviews
Based on 30 reviews; source checked about 1 month ago. dibs counts only what a review actually states, so a kind of work nobody mentioned is absent rather than zero.
What comes first
The chain dibs can see is 6 courses long before MECH&AE 171A. Read from Fall 2026, because dibs has not read a class page for MECH&AE 171A in Spring 2027 and a department can change what it requires. This is a floor, not a deadline: dibs has not read a class page for MATH 3B and MECH&AE M20, so the real chain can only be longer than this, never shorter.
Counted in courses rather than quarters: dibs does not know which of them a department lets you take together.
In Springs
Ran in 4 of the last 4 Springs.
From the terms dibs holds, which start in Fall 2021 and exclude summer. A department can run a course in a quarter it never has before.
From the registrar's catalog
Lecture, four hours; discussion, two hours; outside study, six hours. Enforced requisite: course 107. Introduction to feedback principles, control systems design, and system stability. Modeling of physical systems in engineering and other fields; transform methods; controller design using Nyquist, Bode, and root locus methods; compensation; computer-aided analysis and design. Letter grading.
Sections in Spring 2027
Choose an open discussion to enroll; an open lecture alone does not mean a seat is available.
Seat counts as of : the oldest of these 2 readings. Seat readings are snapshots, not live availability. Their timestamps show when dibs last checked.
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Seats
Not published yetLecture: no enrollment count published
Instructor
Not yet assigned
3.09Predicted GPA
Historical records across all instructors; 1,153 letter gradesSeat risk
no history1 discussion. The registrar has not published seat counts for them yet.Every discussion, with its time and seats: 1 discussion
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Not published yet
no enrollment count published
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Final enrollment, averaged across each term's sections: between 60 and 95 a term over 13 terms, summer excluded, most recently 78 in Fall 2025. That is the shape across years, not this term, which is above.
Seats over time in Spring 2027
Read once so far, so there is no line to draw yet.
What turns this into a chart
A second reading is what turns this into a chart: courses come round within about three hours, and a lecture somebody is watching goes to the front of the pass. Watching is on the lecture's own page, not this one.
How readings and alerts work
Dated seat counts can be available even when hourly check history is missing. Gaps do not show whether seats changed between observations.
Seat counts show the last successful read, not live availability. Refreshes can be delayed by request limits or upstream interruptions. Watched sections receive priority, but an hourly update for every section is not guaranteed.
The registrar can change a seat count between our checks. Alerts depend on dibs detecting an opening and completing delivery; a quiet watch does not prove that no seat opened. Check the registrar before enrolling.
From the people who took it
Student reviews
What taking MECH&AE 171A was like: the work, the teaching, and what students wish they’d known.
Your experience could be the first.
No student reviews are available to read on dibs for this course yet. Took it? Tell the next person what helped, what was hard, and how you spent your time.
Looking for more perspectives?
External reviews are separate and do not count toward the dibs rating.