• Lag compensation in the frequency domain
• Lead compensation in the frequency domain
• Lag compensation in the s-plane
• Lead compensation in the s-plane
To start with, a suitable ‘uncompensated system’ is chosen, either by an arbitrary setting of the gain control potentiometer or by setting it to result in a given value of overshoot as seen by step response test. Next a set of specifications – both transient and steady state – are prescribed as an objective by the teacher. The design may then be carried out by one of the above techniques and the results verified by a step response or frequency response testing All the above design problems may be undertaken for a very wide range of design specifications.
Notice that the implementation of the compensation network has been made very convenient by a prewired amplifier with calibrated gain.
Features and Specifications
• Simulated ‘uncompensated’ system having adjustable damping. Peak percent overshoot MP , variable from 20% to 50%, and steady state error variables from 50% to 0.5%
• Compensation network implementation through built-in variable gain amplifier. Gain is adjustable from 1 to 11
• Built-in square and sine wave generators for transient and frequency response studies. Frequency adjustable from 25Hz – 800Hz (approx.)
• 220V±10%, 50Hz mains operation • Complete in all respects, except a measuring CRO