append {control}

Append the dynamics of a set of systems

Description

append appends the dynamics of a set of n-state-space systems together

Usage

append(...)

Arguments

...

Variable argument for LTI system models of tf, ss or zpk class

Details

append(sys1, sys2, sys3,...sysN) first combines the the first two systems and then goes on to combine the resulting state-space system to the next system and so forth. This is achieved by calling the sysgroup(sys1, sys2) at each iteration to group the systems in consecutive pairs until all systems are completely appended to form one system.

sysgroup(sys1, sys2) appends only two systems and is used by append

If a system is not in state-space representation, the function tries to form a state-space representation for such system.

Value

The function returns a state-space model of the formed appended system with A, B, C, D matrices

See Also

series parallel feedback connect

Examples

sys1 <- ss(1,2,3,4)
sys2 <- ss(2,3,4,5)
sys3 <- ss(6,7,8,9)
append(sys1, sys2, sys3)
sys4 <- tf(1, c(1,2,5))
append(sys1, sys2, sys4)