How can I set ResetFcn?

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기범
기범 2023-1-9
回答: TED MOSBY 2025-6-24
Hello,
I'm trying to set resetFcn.
My purpose is set initialcondition and target posture in every trainsets.
  1. s0 = [1 0 0 0] **s0 is initial state
  2. a0 = [1; 0; 0; 0;] ** a0 is initial action
  3. sG = [1 rand rand rand] **sG is target posture
Here is my code:
env.ResetFcn = @(in)motorResetFcn(in); // start to set ResetFcn called 'motorResetFcn'
Here is my code : motorResetFcn.m
function in = motorReset(in)
% randomize target posture
blk = sprintf('sphericalMotorRL/Target_Posture');
t = ['1' '2/3*pi*randn-pi/3' '2/3*pi*randn-pi/3' '2/3*pi*randn-pi/3'];
in = setBlockParameter(in,blk,'Value',num2str(t));
% randomize initial action and state
h = ['1' '0' '0' '0'];
blk = 'sphericalMotorRL/sphericalMotor/s';
in = setBlockParameter(in,blk,'InitialCondition',num2str(h));
h = ['1'; '0'; '0'; '0';];
blk = 'sphericalMotorRL/sphericalMotor/a';
in = setBlockParameter(in,blk,'InitialCondition',num2str(h));
end
My initialcondition and target posture is maxtrix,
I don't know how to declare maxtrix..... what do I have to fix?

回答(1 个)

TED MOSBY
TED MOSBY 2025-6-24
Hi,
As you haven't mentioned the exact problem you are facing, I can address the issue with your code which I noticed:
You're trying to create matrix-valued strings. The variables t and h are being constructed as character arrays instead of proper numeric arrays that are converted to strings. You need to format the matrix properly using mat2str:
t = ['1' '2/3*pi*randn-pi/3' '2/3*pi*randn-pi/3' '2/3*pi*randn-pi/3'];
h = ['1' '0' '0' '0'];
h = ['1'; '0'; '0'; '0';];
These lines create character arrays (strings), not numerical arrays (matrices). For example, ['1' '0' '0' '0'] is the string "1000", not the row vector [1 0 0 0].
I have corrected the part of the code below:
function in = motorResetFcn(in)
blk = 'sphericalMotorRL/Target_Posture';
t = [1, 2/3*pi*randn - pi/3, 2/3*pi*randn - pi/3, 2/3*pi*randn - pi/3];
in = setBlockParameter(in, blk, 'Value', mat2str(t));
blk = 'sphericalMotorRL/sphericalMotor/s';
s0 = [1, 0, 0, 0];
in = setBlockParameter(in, blk, 'InitialCondition', mat2str(s0));
blk = 'sphericalMotorRL/sphericalMotor/a';
a0 = [1; 0; 0; 0];
in = setBlockParameter(in, blk, 'InitialCondition', mat2str(a0));
end
Here is more information on "mat2str" :
Hope this helps!

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