| 摘要 |
The subject matter of this specification can be embodied in, among other things, a control apparatus that includes a first mounting plate, a restoring plate having a first surface disposed adjacent the first mounting plate, and a second surface. An elongate member includes a first elongate portion, a second elongate portion, an axis member between the first elongate portion and the second elongate portion, pivotally mounting the elongate member to the first mounting plate and defining a first axis, a displaceable force plate having a substantially flat surface disposed adjacent the second surface of the restoring plate, and a compliant member providing a biasing force between a retaining portion and the force plate against the second surface of the restoring plate. The mass of the second elongate portion substantially offsets the mass of the first elongate portion about the axis member. |
