Updates error values
Dependents: locomotion_pid_action_refactor_EMG
Diff: errorFetch.cpp
- Revision:
- 2:d22c458a8a78
- Parent:
- 1:9e2c9237d88b
- Child:
- 3:71a7dd98fb2c
diff -r 9e2c9237d88b -r d22c458a8a78 errorFetch.cpp --- a/errorFetch.cpp Fri Oct 20 16:29:30 2017 +0000 +++ b/errorFetch.cpp Sun Oct 22 07:56:59 2017 +0000 @@ -5,16 +5,16 @@ #include "refGen.h" // Member function definitions -errorFetch::errorFetch(refGen REF, float N, float Ts):ref(REF), gearRatio(N), Ts(Ts), e_pos(0), e_int(0), e_der(0), e_prev(0){ +errorFetch::errorFetch(float N, float Ts):gearRatio(N), Ts(Ts), e_pos(0), e_int(0), e_der(0), e_prev(0){ } -void errorFetch::fetchError(int counts){ +void errorFetch::fetchError(int counts, float ref){ // Calculating motor position based on encoder counts double motorPosition = 2*3.14*(counts/(gearRatio*64.0f)); - + // Computing position error - e_pos = ref.getReferencePosition() - motorPosition; + e_pos = ref - motorPosition; // Limiting the integral error to prevent integrator saturation if(fabs(e_int) <= 5){ @@ -24,4 +24,5 @@ // Derivative error e_der = (e_pos - e_prev)/Ts; e_prev = e_pos; // Store current position error as we'll need it to compute the next derivative error - } \ No newline at end of file + } +