|Sr. no||Point of Difference||Feedback control system||Feed Forward Control system|
|1||Definition||Systems in which corrective action is taken after disturbances affect the output||Systems in which corrective action is taken before disturbances affect the output|
|2||Necessary requirement||Not required||Measurable Disturbance or noise|
|3||Corrective action||Corrective action taken after the disturbance occurs on the output.||Corrective action taken before the actual disturbance occurs on the output.|
|5||Control Variable adjustment||Variables are adjusted depending on errors.||Variables are adjusted based on prior knowledge and predictions.|
|6||Example||Use of roll sensor as feedback element in ship stabilization system.||Use of flowmeter as feed forward block in temperature control systems.|
Please log in to add an answer.