Control SystemsForums › Ask ACCA Tutor Forums › Ask the Tutor ACCA APM Exams › Control SystemsThis topic has 2 replies, 2 voices, and was last updated 10 years ago by atab.Viewing 3 posts - 1 through 3 (of 3 total)AuthorPosts November 15, 2014 at 7:38 pm #210287 atabMemberTopics: 82Replies: 185☆☆☆Hi,Can you explain the diagram on page 47 of the course notes in relation to control systems please? It isn’t clear to me by just looking at it and I don’t know what the starting point is..Thanks November 16, 2014 at 9:50 am #210382 Ken GarrettKeymasterTopics: 10Replies: 10577☆☆☆☆☆Consider a manufacturing company.Start with inputs (eg material)These are processed to produce output.The input and output from the process are measured (sensor)Think of the comparator as the variance calculation where the input/output information is compared to the standard costsThe effector can then be used to effect changes eg to get the buyer to be more careful over input costs, or to adjust the standard if that were wrong.There are also environmental influences, such as material price rises, which could affect the standard and the type of material bought. November 16, 2014 at 12:47 pm #210429 atabMemberTopics: 82Replies: 185☆☆☆Great thanks for clearing that up for me! 🙂AuthorPostsViewing 3 posts - 1 through 3 (of 3 total)You must be logged in to reply to this topic.Log In Username: Password: Keep me signed in Log In