Welcome to

Controls Lab at UVa



This lab currently offers a course, Control Laboratory (ECE 403), which is designed to give seniors in Electrical Engineering the opportunity to apply the knowledge obtained from previous engineering courses to the design and analysis of feedback control systems. It is design-oriented and consists of design, analysis, construction, and testing of electrical and electromechanical circuits and devices, and with various applications of control theory. Two experiments on digital control are included to help students understand the fundamentals of digital control. This should be a motivation for them to take the follow-up course, Digital Control Systems (ECE 412).


Gang Tao , Professor of Electrical Engineering


Yu Liu , Ph.D. Student of Electrical Engineering


5 Feedback 33-110 Analogue Units

5 Feedback 33-100 Mechanical Units

5 Feedback 01-100 Power Supplies.

·         5 Feedback 33-003 Digital Servo Fundamentals Trainers, including:

5 Feedback 33-120 Digital Units

3 Feedback MIC926 Computer interface cards

5 sets of supporting software

·         5 Dell PCs

·         2 Gateway PCs

·         6 Tektronix TDS 420 Four Channel Digitizing Oscilloscopes

·         6 Tektronix TM 5006A Power Modules, containing

6 Tektronix DM 5110 Programmable Digital Multi-meters

6 Tektronix AFG 5101 Programmable Arbitrary/Function Generators

6 Tektronix PS 5010 Programmable Power Supplies.


Learn to use the Analogue Servo Fundamentals Trainer 33-002

Review the basic properties of an op-amp and their applications.

·         2. Motor and Tachogenerator

Examine d.c. motor properties

Study tachogenerator functions.

·         3. Position Control

Design position feedback control systems for desired position tracking

Study the effect of feedback gain on system performance.

·         4. Velocity Feedback Control

Design closed-loop control systems with velocity feedback

Study methods to reduce system tracking errors.

·         5. Stability

Examine the behavior of an unstable system and the causes of instability

Design a speed regulating system.

·         6. P, I, D Elements and PD Control

Study the properties of proportional (P), integral (I) and derivative(D) elements

Learn the concept of proportional and derivative (PD) control

Design, build and test differentiators and integrators using op-amps.

·         7. PI Control

Learn the proportional and integral (PI) control concept

Design and build a PI controller

Study some applications of PI control.

·         8. PID Control

Learn the proportional, derivative and integral (PID) control concept

Design and build a single-amplifier PID control system.

·         9. Frequency Response

Study the frequency response method for evaluating system performance

Apply it to compensation of a motor control system.

·         10. Frequency Response of PI, PID and Velocity Feedback

Investigate the effect of PI, PID and velocity feedback by frequency response method.

·         11. Digital Control Fundamentals

Understand concepts of digital control

Implement A/D, D/A, digital control of speed and position.

·         12. Digital PID Control

Design and implement a digital PID controller for a DC motor

Evaluate the system performance using frequency response.