[VicPiMakers Projects] Challenge 2: Confirm preliminary results

[Mark G.]

Hi Jim,

Thanks for the corrections.  Here are my updated results
with some trial solutions for outputs 9 and 10.
I differ in output 10.

$ echo  33009 9002 11 | ../bin/cnc
Input:
RegP: 33009	 bits: 1000000011110001
RegM: 9002	 bits: 0010001100101010
RegS: 11	 bits: 00001011
Output #1: 241	 (position) 	 bits: 11110001
Output #2: 35	 (velocity) 	 bits: 00100011
Output #3: 2	 (accel.) 	 bits: 00000010
Output #4: 10	 (time) 	 bits: 00001010

Error status:
Position error.
Velocity ok.
Acceleration error.
Time error.

Error corrected:
Output #5: 240	 (position) 	 bits: 11110000
Output #6: 35	 (velocity) 	 bits: 00100011
Output #7: 10	 (accel.) 	 bits: 00001010
Output #8: 9	 (time) 	 bits: 00001001

Error status:
Position ok.
Velocity ok.
Acceleration ok.
Time ok.

Output #9:
  Travel time t: 6.93 (s)
  final velocity v: 69.28 (cm/sec)

Output #10:
  Testung t1 solution 1: 12.83 (s)
  Invalid t2 with t1 solution 1: -16.66
  trying t1 solution 2: 1.17 (s)
  Valid t2 with t1 solution 2: 6.66 (s)

  Solution t1: 1.17 (s)
  Solution t2: 6.66 (s)

Output #11:
Solutions involving a negative amount for t2 are not
physically possible without time travel.



On 2020-11-12 8:00 p.m., James Briante wrote:
> 
> 
> Mark -a big thanks for pointing out the errors! v & t in the 
> Callenge2.pdf are typing errors. I should have included the actual 
> output screen (see attachment) with the other files. I've blacked out  
> the answer to Output #11.
> 
> Things have been quiet on project talk re: challenge 2. Could these 
> errors be the reason?
> 
> I don't have a read on what I should do for output #10. Should I provide 
> the solution to the quadratic equation?
> 
> Jim
> 
> 
> On Wed, Nov 11, 2020 at 5:09 PM Mark G. <vpm at palaceofretention.ca 
> <mailto:vpm at palaceofretention.ca>> wrote:
> 
>     Hi Jim,
> 
>     I've completed up-to output #8 of the challenge and have
>     some discrepancies with your challenge specification.
>     Specifically, velocity/acceleration error switch, differing
>     values for uncorrected time (t) and velocity (v).
> 
>     Your values:
>     Input Data: 33009,9002,11 (initial values - RegP, RegM, RegS)
>     Output #1: 241 (value of p, transferred from RegP)
>     Output #2: 186 (value of v, transferred from RegM)
>     Output #3: 10 (value of a, transferred from RegM)
>     Output #4: 220 (value of t, transferred RegM)
>     --------------------------------------------------------------------------------
> 
>     Output # 5 to #8 – values of p, v, a, and t with corrections
>     --------------------------------------------------------------------------------
> 
>     Output #5: 240 (p)
>     Output #6: 35 (v)
>     Output #7: 10 (a)
>     Output #8: 9 (t)
> 
>     My values:
> 
>     $ echo  33009 9002 11 | ../bin/cnc
>     Input:
>     RegP: 33009      bits: 1000000011110001
>     RegM: 9002       bits: 0010001100101010
>     RegS: 11         bits: 00001011
>     Output #1: 241   (position)      bits: 11110001
>     Output #2: 35    (velocity)      bits: 00100011
>     Output #3: 2     (accel.)        bits: 00000010
>     Output #4: 10    (time)          bits: 00001010
>     Position error.
>     Velocity ok.
>     Acceleration error.
>     Time error.
>     Error corrected:
>     Output #5: 240   (position)      bits: 11110000
>     Output #6: 35    (velocity)      bits: 00100011
>     Output #7: 10    (accel.)        bits: 00001010
>     Output #8: 9     (time)          bits: 00001001
>     Position ok.
>     Velocity ok.
>     Acceleration ok.
>     Time ok.
> 
>     What do you think?
> 
>     Mark
> 
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>